2008 lines
67 KiB
C
2008 lines
67 KiB
C
/**************************************************************************
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*
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* Copyright 2007 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors:
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* Brian Paul
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*/
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#include "main/errors.h"
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#include "main/image.h"
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#include "main/bufferobj.h"
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#include "main/blit.h"
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#include "main/format_pack.h"
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#include "main/framebuffer.h"
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#include "main/macros.h"
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#include "main/mtypes.h"
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#include "main/pack.h"
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#include "main/pbo.h"
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#include "main/readpix.h"
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#include "main/state.h"
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#include "main/texformat.h"
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#include "main/teximage.h"
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#include "main/texstore.h"
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#include "main/glformats.h"
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#include "program/program.h"
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#include "program/prog_print.h"
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#include "program/prog_instruction.h"
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#include "st_atom.h"
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#include "st_atom_constbuf.h"
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#include "st_cb_bitmap.h"
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#include "st_cb_drawpixels.h"
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#include "st_cb_readpixels.h"
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#include "st_cb_fbo.h"
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#include "st_context.h"
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#include "st_debug.h"
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#include "st_draw.h"
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#include "st_format.h"
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#include "st_program.h"
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#include "st_sampler_view.h"
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#include "st_scissor.h"
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#include "st_texture.h"
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#include "st_util.h"
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#include "st_nir.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "tgsi/tgsi_ureg.h"
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#include "util/format/u_format.h"
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#include "util/u_inlines.h"
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#include "util/u_math.h"
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#include "util/u_simple_shaders.h"
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#include "util/u_tile.h"
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#include "cso_cache/cso_context.h"
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#include "compiler/nir/nir_builder.h"
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/**
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* We have a simple glDrawPixels cache to try to optimize the case where the
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* same image is drawn over and over again. It basically works as follows:
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*
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* 1. After we construct a texture map with the image and draw it, we do
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* not discard the texture. We keep it around, plus we note the
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* glDrawPixels width, height, format, etc. parameters and keep a copy
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* of the image in a malloc'd buffer.
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*
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* 2. On the next glDrawPixels we check if the parameters match the previous
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* call. If those match, we check if the image matches the previous image
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* via a memcmp() call. If everything matches, we re-use the previous
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* texture, thereby avoiding the cost creating a new texture and copying
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* the image to it.
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*
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* The effectiveness of this cache depends upon:
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* 1. If the memcmp() finds a difference, it happens relatively quickly.
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Hopefully, not just the last pixels differ!
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* 2. If the memcmp() finds no difference, doing that check is faster than
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* creating and loading a texture.
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*
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* Notes:
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* 1. We don't support any pixel unpacking parameters.
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* 2. We don't try to cache images in Pixel Buffer Objects.
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* 3. Instead of saving the whole image, perhaps some sort of reliable
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* checksum function could be used instead.
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*/
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#define USE_DRAWPIXELS_CACHE 1
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static nir_ssa_def *
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sample_via_nir(nir_builder *b, nir_variable *texcoord,
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const char *name, int sampler, enum glsl_base_type base_type,
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nir_alu_type alu_type)
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{
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const struct glsl_type *sampler2D =
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glsl_sampler_type(GLSL_SAMPLER_DIM_2D, false, false, base_type);
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nir_variable *var =
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nir_variable_create(b->shader, nir_var_uniform, sampler2D, name);
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var->data.binding = sampler;
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var->data.explicit_binding = true;
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nir_deref_instr *deref = nir_build_deref_var(b, var);
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nir_tex_instr *tex = nir_tex_instr_create(b->shader, 3);
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tex->op = nir_texop_tex;
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tex->sampler_dim = GLSL_SAMPLER_DIM_2D;
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tex->coord_components = 2;
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tex->dest_type = alu_type;
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tex->src[0].src_type = nir_tex_src_texture_deref;
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tex->src[0].src = nir_src_for_ssa(&deref->dest.ssa);
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tex->src[1].src_type = nir_tex_src_sampler_deref;
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tex->src[1].src = nir_src_for_ssa(&deref->dest.ssa);
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tex->src[2].src_type = nir_tex_src_coord;
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tex->src[2].src =
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nir_src_for_ssa(nir_channels(b, nir_load_var(b, texcoord),
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(1 << tex->coord_components) - 1));
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nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, NULL);
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nir_builder_instr_insert(b, &tex->instr);
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return nir_channel(b, &tex->dest.ssa, 0);
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}
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static void *
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make_drawpix_z_stencil_program_nir(struct st_context *st,
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bool write_depth,
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bool write_stencil)
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{
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const nir_shader_compiler_options *options =
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st_get_nir_compiler_options(st, MESA_SHADER_FRAGMENT);
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nir_builder b = nir_builder_init_simple_shader(MESA_SHADER_FRAGMENT, options,
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"drawpixels %s%s",
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write_depth ? "Z" : "",
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write_stencil ? "S" : "");
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nir_variable *texcoord =
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nir_variable_create(b.shader, nir_var_shader_in, glsl_vec_type(2),
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"texcoord");
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texcoord->data.location = VARYING_SLOT_TEX0;
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if (write_depth) {
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nir_variable *out =
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nir_variable_create(b.shader, nir_var_shader_out, glsl_float_type(),
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"gl_FragDepth");
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out->data.location = FRAG_RESULT_DEPTH;
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nir_ssa_def *depth = sample_via_nir(&b, texcoord, "depth", 0,
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GLSL_TYPE_FLOAT, nir_type_float32);
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nir_store_var(&b, out, depth, 0x1);
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/* Also copy color */
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nir_variable *color_in =
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nir_variable_create(b.shader, nir_var_shader_in, glsl_vec_type(4),
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"v_color");
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color_in->data.location = VARYING_SLOT_COL0;
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nir_variable *color_out =
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nir_variable_create(b.shader, nir_var_shader_out, glsl_vec_type(4),
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"gl_FragColor");
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color_out->data.location = FRAG_RESULT_COLOR;
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nir_copy_var(&b, color_out, color_in);
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}
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if (write_stencil) {
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nir_variable *out =
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nir_variable_create(b.shader, nir_var_shader_out, glsl_uint_type(),
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"gl_FragStencilRefARB");
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out->data.location = FRAG_RESULT_STENCIL;
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nir_ssa_def *stencil = sample_via_nir(&b, texcoord, "stencil", 1,
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GLSL_TYPE_UINT, nir_type_uint32);
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nir_store_var(&b, out, stencil, 0x1);
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}
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return st_nir_finish_builtin_shader(st, b.shader);
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}
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static void *
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make_drawpix_zs_to_color_program_nir(struct st_context *st,
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bool rgba)
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{
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const nir_shader_compiler_options *options =
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st_get_nir_compiler_options(st, MESA_SHADER_FRAGMENT);
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nir_builder b = nir_builder_init_simple_shader(MESA_SHADER_FRAGMENT, options,
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"copypixels ZStoC");
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nir_variable *texcoord =
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nir_variable_create(b.shader, nir_var_shader_in, glsl_vec_type(2),
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"texcoord");
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texcoord->data.location = VARYING_SLOT_TEX0;
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/* Sample depth and stencil */
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nir_ssa_def *depth = sample_via_nir(&b, texcoord, "depth", 0,
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GLSL_TYPE_FLOAT, nir_type_float32);
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nir_ssa_def *stencil = sample_via_nir(&b, texcoord, "stencil", 1,
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GLSL_TYPE_UINT, nir_type_uint32);
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/* Create the variable to store the output color */
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nir_variable *color_out =
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nir_variable_create(b.shader, nir_var_shader_out, glsl_vec_type(4),
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"make_drawpix_zs_to_color_program_nirgl_FragColor");
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color_out->data.location = FRAG_RESULT_COLOR;
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nir_ssa_def *shifted_depth = nir_fmul(&b,nir_f2f64(&b, depth), nir_imm_double(&b,0xffffff));
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nir_ssa_def *int_depth = nir_f2u32(&b,shifted_depth);
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nir_ssa_def *ds[4];
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ds[0] = nir_ubitfield_extract(&b, stencil, nir_imm_int(&b, 0), nir_imm_int(&b,8));
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ds[1] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 0), nir_imm_int(&b,8));
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ds[2] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 8), nir_imm_int(&b,8));
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ds[3] = nir_ubitfield_extract(&b, int_depth, nir_imm_int(&b, 16), nir_imm_int(&b,8));
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nir_ssa_def *ds_comp[4];
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ds_comp[0] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[3]), 1.0/255.0));
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ds_comp[1] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[2]), 1.0/255.0));
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ds_comp[2] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[1]), 1.0/255.0));
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ds_comp[3] = nir_fsat(&b, nir_fmul_imm(&b, nir_u2f32(&b, ds[0]), 1.0/255.0));
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nir_ssa_def *unpacked_ds = nir_vec4(&b, ds_comp[0], ds_comp[1], ds_comp[2], ds_comp[3]);
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if (rgba) {
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nir_store_var(&b, color_out, unpacked_ds, 0xf);
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}
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else {
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unsigned zyxw[4] = { 2, 1, 0, 3 };
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nir_ssa_def *swizzled_ds= nir_swizzle(&b, unpacked_ds, zyxw, 4);
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nir_store_var(&b, color_out, swizzled_ds, 0xf);
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}
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return st_nir_finish_builtin_shader(st, b.shader);
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}
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/**
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* Create fragment program that does a TEX() instruction to get a Z and/or
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* stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.
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* Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).
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* Pass fragment color through as-is.
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*
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* \return CSO of the fragment shader.
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*/
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static void *
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get_drawpix_z_stencil_program(struct st_context *st,
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bool write_depth,
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bool write_stencil)
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{
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const GLuint shaderIndex = write_depth * 2 + write_stencil;
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void *cso;
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assert(shaderIndex < ARRAY_SIZE(st->drawpix.zs_shaders));
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if (st->drawpix.zs_shaders[shaderIndex]) {
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/* already have the proper shader */
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return st->drawpix.zs_shaders[shaderIndex];
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}
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cso = make_drawpix_z_stencil_program_nir(st, write_depth, write_stencil);
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/* save the new shader */
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st->drawpix.zs_shaders[shaderIndex] = cso;
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return cso;
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}
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/**
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* Create fragment program that does a TEX() instruction to get a Z and
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* stencil value value, then writes to FRAG_RESULT_COLOR.
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* Used for glCopyPixels(GL_DEPTH_STENCIL_TO_RGBA_NV / GL_DEPTH_STENCIL_TO_BGRA_NV).
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*
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* \return CSO of the fragment shader.
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*/
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static void *
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get_drawpix_zs_to_color_program(struct st_context *st,
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bool rgba)
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{
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void *cso;
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GLuint shaderIndex;
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if (rgba)
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shaderIndex = 4;
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else
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shaderIndex = 5;
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assert(shaderIndex < ARRAY_SIZE(st->drawpix.zs_shaders));
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if (st->drawpix.zs_shaders[shaderIndex]) {
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/* already have the proper shader */
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return st->drawpix.zs_shaders[shaderIndex];
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}
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cso = make_drawpix_zs_to_color_program_nir(st, rgba);
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/* save the new shader */
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st->drawpix.zs_shaders[shaderIndex] = cso;
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return cso;
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}
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/**
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* Create a simple vertex shader that just passes through the
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* vertex position, texcoord, and color.
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*/
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void
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st_make_passthrough_vertex_shader(struct st_context *st)
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{
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if (st->passthrough_vs)
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return;
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unsigned inputs[] =
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{ VERT_ATTRIB_POS, VERT_ATTRIB_COLOR0, VERT_ATTRIB_GENERIC0 };
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unsigned outputs[] =
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{ VARYING_SLOT_POS, VARYING_SLOT_COL0, VARYING_SLOT_TEX0 };
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st->passthrough_vs =
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st_nir_make_passthrough_shader(st, "drawpixels VS",
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MESA_SHADER_VERTEX, 3,
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inputs, outputs, NULL, 0);
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}
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/**
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* Return a texture internalFormat for drawing/copying an image
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* of the given format and type.
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*/
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static GLenum
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internal_format(struct gl_context *ctx, GLenum format, GLenum type)
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{
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switch (format) {
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case GL_DEPTH_COMPONENT:
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switch (type) {
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case GL_UNSIGNED_SHORT:
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return GL_DEPTH_COMPONENT16;
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case GL_UNSIGNED_INT:
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return GL_DEPTH_COMPONENT32;
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case GL_FLOAT:
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if (ctx->Extensions.ARB_depth_buffer_float)
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return GL_DEPTH_COMPONENT32F;
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else
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return GL_DEPTH_COMPONENT;
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default:
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return GL_DEPTH_COMPONENT;
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}
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case GL_DEPTH_STENCIL:
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switch (type) {
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case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
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return GL_DEPTH32F_STENCIL8;
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case GL_UNSIGNED_INT_24_8:
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default:
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return GL_DEPTH24_STENCIL8;
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}
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case GL_STENCIL_INDEX:
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return GL_STENCIL_INDEX;
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default:
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if (_mesa_is_enum_format_integer(format)) {
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switch (type) {
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case GL_BYTE:
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return GL_RGBA8I;
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case GL_UNSIGNED_BYTE:
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return GL_RGBA8UI;
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case GL_SHORT:
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return GL_RGBA16I;
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case GL_UNSIGNED_SHORT:
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return GL_RGBA16UI;
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case GL_INT:
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return GL_RGBA32I;
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case GL_UNSIGNED_INT:
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return GL_RGBA32UI;
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default:
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assert(0 && "Unexpected type in internal_format()");
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return GL_RGBA_INTEGER;
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}
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}
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else {
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switch (type) {
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case GL_UNSIGNED_BYTE:
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case GL_UNSIGNED_INT_8_8_8_8:
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case GL_UNSIGNED_INT_8_8_8_8_REV:
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default:
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return GL_RGBA8;
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case GL_UNSIGNED_BYTE_3_3_2:
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case GL_UNSIGNED_BYTE_2_3_3_REV:
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return GL_R3_G3_B2;
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case GL_UNSIGNED_SHORT_4_4_4_4:
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case GL_UNSIGNED_SHORT_4_4_4_4_REV:
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return GL_RGBA4;
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case GL_UNSIGNED_SHORT_5_6_5:
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case GL_UNSIGNED_SHORT_5_6_5_REV:
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return GL_RGB565;
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case GL_UNSIGNED_SHORT_5_5_5_1:
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case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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return GL_RGB5_A1;
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case GL_UNSIGNED_INT_10_10_10_2:
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case GL_UNSIGNED_INT_2_10_10_10_REV:
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return GL_RGB10_A2;
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case GL_UNSIGNED_SHORT:
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case GL_UNSIGNED_INT:
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return GL_RGBA16;
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case GL_BYTE:
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return
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA8_SNORM : GL_RGBA8;
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case GL_SHORT:
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case GL_INT:
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return
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
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case GL_HALF_FLOAT_ARB:
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return
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ctx->Extensions.ARB_texture_float ? GL_RGBA16F :
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
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case GL_FLOAT:
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case GL_DOUBLE:
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return
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ctx->Extensions.ARB_texture_float ? GL_RGBA32F :
|
|
ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
|
|
|
|
case GL_UNSIGNED_INT_5_9_9_9_REV:
|
|
assert(ctx->Extensions.EXT_texture_shared_exponent);
|
|
return GL_RGB9_E5;
|
|
|
|
case GL_UNSIGNED_INT_10F_11F_11F_REV:
|
|
assert(ctx->Extensions.EXT_packed_float);
|
|
return GL_R11F_G11F_B10F;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Create a temporary texture to hold an image of the given size.
|
|
* If width, height are not POT and the driver only handles POT textures,
|
|
* allocate the next larger size of texture that is POT.
|
|
*/
|
|
static struct pipe_resource *
|
|
alloc_texture(struct st_context *st, GLsizei width, GLsizei height,
|
|
enum pipe_format texFormat, unsigned bind)
|
|
{
|
|
struct pipe_resource *pt;
|
|
|
|
pt = st_texture_create(st, st->internal_target, texFormat, 0,
|
|
width, height, 1, 1, 0, bind);
|
|
|
|
return pt;
|
|
}
|
|
|
|
|
|
/**
|
|
* Search the cache for an image which matches the given parameters.
|
|
* \return pipe_resource pointer if found, NULL if not found.
|
|
*/
|
|
static struct pipe_resource *
|
|
search_drawpixels_cache(struct st_context *st,
|
|
GLsizei width, GLsizei height,
|
|
GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack,
|
|
const void *pixels)
|
|
{
|
|
struct pipe_resource *pt = NULL;
|
|
const GLint bpp = _mesa_bytes_per_pixel(format, type);
|
|
unsigned i;
|
|
|
|
if ((unpack->RowLength != 0 && unpack->RowLength != width) ||
|
|
unpack->SkipPixels != 0 ||
|
|
unpack->SkipRows != 0 ||
|
|
unpack->SwapBytes ||
|
|
unpack->BufferObj) {
|
|
/* we don't allow non-default pixel unpacking values */
|
|
return NULL;
|
|
}
|
|
|
|
/* Search cache entries for a match */
|
|
for (i = 0; i < ARRAY_SIZE(st->drawpix_cache.entries); i++) {
|
|
struct drawpix_cache_entry *entry = &st->drawpix_cache.entries[i];
|
|
|
|
if (width == entry->width &&
|
|
height == entry->height &&
|
|
format == entry->format &&
|
|
type == entry->type &&
|
|
pixels == entry->user_pointer &&
|
|
entry->image) {
|
|
assert(entry->texture);
|
|
|
|
/* check if the pixel data is the same */
|
|
if (memcmp(pixels, entry->image, width * height * bpp) == 0) {
|
|
/* Success - found a cache match */
|
|
pipe_resource_reference(&pt, entry->texture);
|
|
/* refcount of returned texture should be at least two here. One
|
|
* reference for the cache to hold on to, one for the caller (which
|
|
* it will release), and possibly more held by the driver.
|
|
*/
|
|
assert(pt->reference.count >= 2);
|
|
|
|
/* update the age of this entry */
|
|
entry->age = ++st->drawpix_cache.age;
|
|
|
|
return pt;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* no cache match found */
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Find the oldest entry in the glDrawPixels cache. We'll replace this
|
|
* one when we need to store a new image.
|
|
*/
|
|
static struct drawpix_cache_entry *
|
|
find_oldest_drawpixels_cache_entry(struct st_context *st)
|
|
{
|
|
unsigned oldest_age = ~0u, oldest_index = ~0u;
|
|
unsigned i;
|
|
|
|
/* Find entry with oldest (lowest) age */
|
|
for (i = 0; i < ARRAY_SIZE(st->drawpix_cache.entries); i++) {
|
|
const struct drawpix_cache_entry *entry = &st->drawpix_cache.entries[i];
|
|
if (entry->age < oldest_age) {
|
|
oldest_age = entry->age;
|
|
oldest_index = i;
|
|
}
|
|
}
|
|
|
|
assert(oldest_index != ~0u);
|
|
|
|
return &st->drawpix_cache.entries[oldest_index];
|
|
}
|
|
|
|
|
|
/**
|
|
* Try to save the given glDrawPixels image in the cache.
|
|
*/
|
|
static void
|
|
cache_drawpixels_image(struct st_context *st,
|
|
GLsizei width, GLsizei height,
|
|
GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack,
|
|
const void *pixels,
|
|
struct pipe_resource *pt)
|
|
{
|
|
if ((unpack->RowLength == 0 || unpack->RowLength == width) &&
|
|
unpack->SkipPixels == 0 &&
|
|
unpack->SkipRows == 0) {
|
|
const GLint bpp = _mesa_bytes_per_pixel(format, type);
|
|
struct drawpix_cache_entry *entry =
|
|
find_oldest_drawpixels_cache_entry(st);
|
|
assert(entry);
|
|
entry->width = width;
|
|
entry->height = height;
|
|
entry->format = format;
|
|
entry->type = type;
|
|
entry->user_pointer = pixels;
|
|
free(entry->image);
|
|
entry->image = malloc(width * height * bpp);
|
|
if (entry->image) {
|
|
memcpy(entry->image, pixels, width * height * bpp);
|
|
pipe_resource_reference(&entry->texture, pt);
|
|
entry->age = ++st->drawpix_cache.age;
|
|
}
|
|
else {
|
|
/* out of memory, free/disable cached texture */
|
|
entry->width = 0;
|
|
entry->height = 0;
|
|
pipe_resource_reference(&entry->texture, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Make texture containing an image for glDrawPixels image.
|
|
* If 'pixels' is NULL, leave the texture image data undefined.
|
|
*/
|
|
static struct pipe_resource *
|
|
make_texture(struct st_context *st,
|
|
GLsizei width, GLsizei height, GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack,
|
|
const void *pixels)
|
|
{
|
|
struct gl_context *ctx = st->ctx;
|
|
struct pipe_context *pipe = st->pipe;
|
|
mesa_format mformat;
|
|
struct pipe_resource *pt = NULL;
|
|
enum pipe_format pipeFormat;
|
|
GLenum baseInternalFormat;
|
|
|
|
#if USE_DRAWPIXELS_CACHE
|
|
pt = search_drawpixels_cache(st, width, height, format, type,
|
|
unpack, pixels);
|
|
if (pt) {
|
|
return pt;
|
|
}
|
|
#endif
|
|
|
|
/* Choose a pixel format for the temp texture which will hold the
|
|
* image to draw.
|
|
*/
|
|
pipeFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
|
|
format, type, unpack->SwapBytes);
|
|
|
|
if (pipeFormat == PIPE_FORMAT_NONE) {
|
|
/* Use the generic approach. */
|
|
GLenum intFormat = internal_format(ctx, format, type);
|
|
|
|
pipeFormat = st_choose_format(st, intFormat, format, type,
|
|
st->internal_target, 0, 0,
|
|
PIPE_BIND_SAMPLER_VIEW,
|
|
false, false);
|
|
assert(pipeFormat != PIPE_FORMAT_NONE);
|
|
}
|
|
|
|
mformat = st_pipe_format_to_mesa_format(pipeFormat);
|
|
baseInternalFormat = _mesa_get_format_base_format(mformat);
|
|
|
|
pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
|
|
if (!pixels)
|
|
return NULL;
|
|
|
|
/* alloc temporary texture */
|
|
pt = alloc_texture(st, width, height, pipeFormat, PIPE_BIND_SAMPLER_VIEW);
|
|
if (!pt) {
|
|
_mesa_unmap_pbo_source(ctx, unpack);
|
|
return NULL;
|
|
}
|
|
|
|
{
|
|
struct pipe_transfer *transfer;
|
|
GLubyte *dest;
|
|
const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
|
|
|
|
/* we'll do pixel transfer in a fragment shader */
|
|
ctx->_ImageTransferState = 0x0;
|
|
|
|
/* map texture transfer */
|
|
dest = pipe_texture_map(pipe, pt, 0, 0,
|
|
PIPE_MAP_WRITE, 0, 0,
|
|
width, height, &transfer);
|
|
if (!dest) {
|
|
pipe_resource_reference(&pt, NULL);
|
|
_mesa_unmap_pbo_source(ctx, unpack);
|
|
return NULL;
|
|
}
|
|
|
|
/* Put image into texture transfer.
|
|
* Note that the image is actually going to be upside down in
|
|
* the texture. We deal with that with texcoords.
|
|
*/
|
|
if ((format == GL_RGBA || format == GL_BGRA)
|
|
&& type == GL_UNSIGNED_BYTE) {
|
|
/* Use a memcpy-based texstore to avoid software pixel swizzling.
|
|
* We'll do the necessary swizzling with the pipe_sampler_view to
|
|
* give much better performance.
|
|
* XXX in the future, expand this to accomodate more format and
|
|
* type combinations.
|
|
*/
|
|
_mesa_memcpy_texture(ctx, 2,
|
|
mformat, /* mesa_format */
|
|
transfer->stride, /* dstRowStride, bytes */
|
|
&dest, /* destSlices */
|
|
width, height, 1, /* size */
|
|
format, type, /* src format/type */
|
|
pixels, /* data source */
|
|
unpack);
|
|
}
|
|
else {
|
|
ASSERTED bool success;
|
|
success = _mesa_texstore(ctx, 2, /* dims */
|
|
baseInternalFormat, /* baseInternalFormat */
|
|
mformat, /* mesa_format */
|
|
transfer->stride, /* dstRowStride, bytes */
|
|
&dest, /* destSlices */
|
|
width, height, 1, /* size */
|
|
format, type, /* src format/type */
|
|
pixels, /* data source */
|
|
unpack);
|
|
|
|
assert(success);
|
|
}
|
|
|
|
/* unmap */
|
|
pipe_texture_unmap(pipe, transfer);
|
|
|
|
/* restore */
|
|
ctx->_ImageTransferState = imageTransferStateSave;
|
|
}
|
|
|
|
#if USE_DRAWPIXELS_CACHE
|
|
cache_drawpixels_image(st, width, height, format, type, unpack, pixels, pt);
|
|
#endif
|
|
|
|
_mesa_unmap_pbo_source(ctx, unpack);
|
|
|
|
return pt;
|
|
}
|
|
|
|
|
|
static void
|
|
draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
|
|
GLsizei width, GLsizei height,
|
|
GLfloat zoomX, GLfloat zoomY,
|
|
struct pipe_sampler_view **sv,
|
|
int num_sampler_view,
|
|
void *driver_vp,
|
|
void *driver_fp,
|
|
struct st_fp_variant *fpv,
|
|
const GLfloat *color,
|
|
GLboolean invertTex,
|
|
GLboolean write_depth, GLboolean write_stencil)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct cso_context *cso = st->cso_context;
|
|
const unsigned fb_width = _mesa_geometric_width(ctx->DrawBuffer);
|
|
const unsigned fb_height = _mesa_geometric_height(ctx->DrawBuffer);
|
|
GLfloat x0, y0, x1, y1;
|
|
ASSERTED GLsizei maxSize;
|
|
boolean normalized = sv[0]->texture->target == PIPE_TEXTURE_2D;
|
|
unsigned cso_state_mask;
|
|
|
|
assert(sv[0]->texture->target == st->internal_target);
|
|
|
|
/* limit checks */
|
|
/* XXX if DrawPixels image is larger than max texture size, break
|
|
* it up into chunks.
|
|
*/
|
|
maxSize = st->screen->get_param(st->screen,
|
|
PIPE_CAP_MAX_TEXTURE_2D_SIZE);
|
|
assert(width <= maxSize);
|
|
assert(height <= maxSize);
|
|
|
|
cso_state_mask = (CSO_BIT_RASTERIZER |
|
|
CSO_BIT_VIEWPORT |
|
|
CSO_BIT_FRAGMENT_SAMPLERS |
|
|
CSO_BIT_STREAM_OUTPUTS |
|
|
CSO_BIT_VERTEX_ELEMENTS |
|
|
CSO_BITS_ALL_SHADERS);
|
|
if (write_stencil) {
|
|
cso_state_mask |= (CSO_BIT_DEPTH_STENCIL_ALPHA |
|
|
CSO_BIT_BLEND);
|
|
}
|
|
cso_save_state(cso, cso_state_mask);
|
|
|
|
/* rasterizer state: just scissor */
|
|
{
|
|
struct pipe_rasterizer_state rasterizer;
|
|
memset(&rasterizer, 0, sizeof(rasterizer));
|
|
rasterizer.clamp_fragment_color = !st->clamp_frag_color_in_shader &&
|
|
ctx->Color._ClampFragmentColor;
|
|
rasterizer.half_pixel_center = 1;
|
|
rasterizer.bottom_edge_rule = 1;
|
|
rasterizer.depth_clip_near = st->clamp_frag_depth_in_shader ||
|
|
!ctx->Transform.DepthClampNear;
|
|
rasterizer.depth_clip_far = st->clamp_frag_depth_in_shader ||
|
|
!ctx->Transform.DepthClampFar;
|
|
rasterizer.depth_clamp = !rasterizer.depth_clip_far;
|
|
rasterizer.scissor = ctx->Scissor.EnableFlags;
|
|
cso_set_rasterizer(cso, &rasterizer);
|
|
}
|
|
|
|
if (write_stencil) {
|
|
/* Stencil writing bypasses the normal fragment pipeline to
|
|
* disable color writing and set stencil test to always pass.
|
|
*/
|
|
struct pipe_depth_stencil_alpha_state dsa;
|
|
struct pipe_blend_state blend;
|
|
|
|
/* depth/stencil */
|
|
memset(&dsa, 0, sizeof(dsa));
|
|
dsa.stencil[0].enabled = 1;
|
|
dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
|
|
dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
|
|
dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
|
|
if (write_depth) {
|
|
/* writing depth+stencil: depth test always passes */
|
|
dsa.depth_enabled = 1;
|
|
dsa.depth_writemask = ctx->Depth.Mask;
|
|
dsa.depth_func = PIPE_FUNC_ALWAYS;
|
|
}
|
|
cso_set_depth_stencil_alpha(cso, &dsa);
|
|
|
|
/* blend (colormask) */
|
|
memset(&blend, 0, sizeof(blend));
|
|
cso_set_blend(cso, &blend);
|
|
}
|
|
|
|
/* fragment shader state: TEX lookup program */
|
|
cso_set_fragment_shader_handle(cso, driver_fp);
|
|
|
|
/* vertex shader state: position + texcoord pass-through */
|
|
cso_set_vertex_shader_handle(cso, driver_vp);
|
|
|
|
/* disable other shaders */
|
|
cso_set_tessctrl_shader_handle(cso, NULL);
|
|
cso_set_tesseval_shader_handle(cso, NULL);
|
|
cso_set_geometry_shader_handle(cso, NULL);
|
|
|
|
/* user samplers, plus the drawpix samplers */
|
|
{
|
|
struct pipe_sampler_state sampler;
|
|
|
|
memset(&sampler, 0, sizeof(sampler));
|
|
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
|
|
sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
sampler.normalized_coords = normalized;
|
|
|
|
if (fpv) {
|
|
/* drawing a color image */
|
|
const struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
|
|
uint num = MAX3(fpv->drawpix_sampler + 1,
|
|
fpv->pixelmap_sampler + 1,
|
|
st->state.num_frag_samplers);
|
|
uint i;
|
|
|
|
for (i = 0; i < st->state.num_frag_samplers; i++)
|
|
samplers[i] = &st->state.frag_samplers[i];
|
|
|
|
samplers[fpv->drawpix_sampler] = &sampler;
|
|
if (sv[1])
|
|
samplers[fpv->pixelmap_sampler] = &sampler;
|
|
|
|
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num, samplers);
|
|
} else {
|
|
/* drawing a depth/stencil image */
|
|
const struct pipe_sampler_state *samplers[2] = {&sampler, &sampler};
|
|
|
|
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num_sampler_view, samplers);
|
|
}
|
|
}
|
|
|
|
unsigned tex_width = sv[0]->texture->width0;
|
|
unsigned tex_height = sv[0]->texture->height0;
|
|
|
|
/* user textures, plus the drawpix textures */
|
|
if (fpv) {
|
|
/* drawing a color image */
|
|
struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
|
|
unsigned num_views =
|
|
st_get_sampler_views(st, PIPE_SHADER_FRAGMENT,
|
|
ctx->FragmentProgram._Current, sampler_views);
|
|
|
|
num_views = MAX3(fpv->drawpix_sampler + 1, fpv->pixelmap_sampler + 1,
|
|
num_views);
|
|
|
|
sampler_views[fpv->drawpix_sampler] = sv[0];
|
|
if (sv[1])
|
|
sampler_views[fpv->pixelmap_sampler] = sv[1];
|
|
pipe->set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num_views, 0,
|
|
true, sampler_views);
|
|
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT] = num_views;
|
|
} else {
|
|
/* drawing a depth/stencil image */
|
|
pipe->set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num_sampler_view,
|
|
0, false, sv);
|
|
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT] =
|
|
MAX2(st->state.num_sampler_views[PIPE_SHADER_FRAGMENT], num_sampler_view);
|
|
|
|
for (unsigned i = 0; i < num_sampler_view; i++)
|
|
pipe_sampler_view_reference(&sv[i], NULL);
|
|
}
|
|
|
|
/* viewport state: viewport matching window dims */
|
|
cso_set_viewport_dims(cso, fb_width, fb_height, TRUE);
|
|
|
|
st->util_velems.count = 3;
|
|
cso_set_vertex_elements(cso, &st->util_velems);
|
|
cso_set_stream_outputs(cso, 0, NULL, NULL);
|
|
|
|
/* Compute Gallium window coords (y=0=top) with pixel zoom.
|
|
* Recall that these coords are transformed by the current
|
|
* vertex shader and viewport transformation.
|
|
*/
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
|
|
y = fb_height - (int) (y + height * ctx->Pixel.ZoomY);
|
|
invertTex = !invertTex;
|
|
}
|
|
|
|
x0 = (GLfloat) x;
|
|
x1 = x + width * ctx->Pixel.ZoomX;
|
|
y0 = (GLfloat) y;
|
|
y1 = y + height * ctx->Pixel.ZoomY;
|
|
|
|
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
|
|
z = z * 2.0f - 1.0f;
|
|
|
|
{
|
|
const float clip_x0 = x0 / (float) fb_width * 2.0f - 1.0f;
|
|
const float clip_y0 = y0 / (float) fb_height * 2.0f - 1.0f;
|
|
const float clip_x1 = x1 / (float) fb_width * 2.0f - 1.0f;
|
|
const float clip_y1 = y1 / (float) fb_height * 2.0f - 1.0f;
|
|
const float maxXcoord = normalized ?
|
|
((float) width / tex_width) : (float) width;
|
|
const float maxYcoord = normalized
|
|
? ((float) height / tex_height) : (float) height;
|
|
const float sLeft = 0.0f, sRight = maxXcoord;
|
|
const float tTop = invertTex ? maxYcoord : 0.0f;
|
|
const float tBot = invertTex ? 0.0f : maxYcoord;
|
|
|
|
if (!st_draw_quad(st, clip_x0, clip_y0, clip_x1, clip_y1, z,
|
|
sLeft, tBot, sRight, tTop, color, 0)) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
|
|
}
|
|
}
|
|
|
|
/* restore state */
|
|
/* Unbind all because st/mesa won't do it if the current shader doesn't
|
|
* use them.
|
|
*/
|
|
cso_restore_state(cso, CSO_UNBIND_FS_SAMPLERVIEWS);
|
|
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT] = 0;
|
|
|
|
st->dirty |= ST_NEW_VERTEX_ARRAYS |
|
|
ST_NEW_FS_SAMPLER_VIEWS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
|
|
* can't use a fragment shader to write stencil values.
|
|
*/
|
|
static void
|
|
draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
|
|
GLsizei width, GLsizei height, GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack,
|
|
const void *pixels)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct st_renderbuffer *strb;
|
|
enum pipe_map_flags usage;
|
|
struct pipe_transfer *pt;
|
|
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
|
|
ubyte *stmap;
|
|
struct gl_pixelstore_attrib clippedUnpack = *unpack;
|
|
GLubyte *sValues;
|
|
GLuint *zValues;
|
|
|
|
strb = st_renderbuffer(ctx->DrawBuffer->
|
|
Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
y = ctx->DrawBuffer->Height - y - height;
|
|
}
|
|
|
|
if (format == GL_STENCIL_INDEX &&
|
|
_mesa_is_format_packed_depth_stencil(strb->Base.Format)) {
|
|
/* writing stencil to a combined depth+stencil buffer */
|
|
usage = PIPE_MAP_READ_WRITE;
|
|
}
|
|
else {
|
|
usage = PIPE_MAP_WRITE;
|
|
}
|
|
|
|
stmap = pipe_texture_map(pipe, strb->texture,
|
|
strb->surface->u.tex.level,
|
|
strb->surface->u.tex.first_layer,
|
|
usage, x, y,
|
|
width, height, &pt);
|
|
|
|
pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);
|
|
assert(pixels);
|
|
|
|
sValues = malloc(width * sizeof(GLubyte));
|
|
zValues = malloc(width * sizeof(GLuint));
|
|
|
|
if (sValues && zValues) {
|
|
GLint row;
|
|
for (row = 0; row < height; row++) {
|
|
GLfloat *zValuesFloat = (GLfloat*)zValues;
|
|
GLenum destType = GL_UNSIGNED_BYTE;
|
|
const void *source = _mesa_image_address2d(&clippedUnpack, pixels,
|
|
width, height,
|
|
format, type,
|
|
row, 0);
|
|
_mesa_unpack_stencil_span(ctx, width, destType, sValues,
|
|
type, source, &clippedUnpack,
|
|
ctx->_ImageTransferState);
|
|
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
GLenum ztype =
|
|
pt->resource->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ?
|
|
GL_FLOAT : GL_UNSIGNED_INT;
|
|
|
|
_mesa_unpack_depth_span(ctx, width, ztype, zValues,
|
|
(1 << 24) - 1, type, source,
|
|
&clippedUnpack);
|
|
}
|
|
|
|
if (zoom) {
|
|
_mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "
|
|
"zoom not complete");
|
|
}
|
|
|
|
{
|
|
GLint spanY;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
spanY = height - row - 1;
|
|
}
|
|
else {
|
|
spanY = row;
|
|
}
|
|
|
|
/* now pack the stencil (and Z) values in the dest format */
|
|
switch (pt->resource->format) {
|
|
case PIPE_FORMAT_S8_UINT:
|
|
{
|
|
ubyte *dest = stmap + spanY * pt->stride;
|
|
assert(usage == PIPE_MAP_WRITE);
|
|
memcpy(dest, sValues, width);
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = zValues[k] | (sValues[k] << 24);
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
|
|
}
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
|
|
}
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLfloat *destf = (GLfloat*)dest;
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
destf[k*2] = zValuesFloat[k];
|
|
dest[k*2+1] = sValues[k] & 0xff;
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_MAP_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k*2+1] = sValues[k] & 0xff;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels()");
|
|
}
|
|
|
|
free(sValues);
|
|
free(zValues);
|
|
|
|
_mesa_unmap_pbo_source(ctx, &clippedUnpack);
|
|
|
|
/* unmap the stencil buffer */
|
|
pipe_texture_unmap(pipe, pt);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get fragment program variant for a glDrawPixels or glCopyPixels
|
|
* command for RGBA data.
|
|
*/
|
|
static struct st_fp_variant *
|
|
get_color_fp_variant(struct st_context *st)
|
|
{
|
|
struct gl_context *ctx = st->ctx;
|
|
struct st_fp_variant_key key;
|
|
struct st_fp_variant *fpv;
|
|
|
|
memset(&key, 0, sizeof(key));
|
|
|
|
key.st = st->has_shareable_shaders ? NULL : st;
|
|
key.drawpixels = 1;
|
|
key.scaleAndBias = (ctx->Pixel.RedBias != 0.0 ||
|
|
ctx->Pixel.RedScale != 1.0 ||
|
|
ctx->Pixel.GreenBias != 0.0 ||
|
|
ctx->Pixel.GreenScale != 1.0 ||
|
|
ctx->Pixel.BlueBias != 0.0 ||
|
|
ctx->Pixel.BlueScale != 1.0 ||
|
|
ctx->Pixel.AlphaBias != 0.0 ||
|
|
ctx->Pixel.AlphaScale != 1.0);
|
|
key.pixelMaps = ctx->Pixel.MapColorFlag;
|
|
key.clamp_color = st->clamp_frag_color_in_shader &&
|
|
ctx->Color._ClampFragmentColor;
|
|
key.lower_alpha_func = COMPARE_FUNC_ALWAYS;
|
|
|
|
fpv = st_get_fp_variant(st, st->fp, &key);
|
|
|
|
return fpv;
|
|
}
|
|
|
|
/**
|
|
* Get fragment program variant for a glDrawPixels command
|
|
* for COLOR_INDEX data
|
|
*/
|
|
static struct st_fp_variant *
|
|
get_color_index_fp_variant(struct st_context *st)
|
|
{
|
|
struct gl_context *ctx = st->ctx;
|
|
struct st_fp_variant_key key;
|
|
struct st_fp_variant *fpv;
|
|
|
|
memset(&key, 0, sizeof(key));
|
|
|
|
key.st = st->has_shareable_shaders ? NULL : st;
|
|
key.drawpixels = 1;
|
|
/* Since GL is always in RGBA mode MapColorFlag does not
|
|
* affect GL_COLOR_INDEX format.
|
|
* Scale and bias also never affect GL_COLOR_INDEX format.
|
|
*/
|
|
key.scaleAndBias = 0;
|
|
key.pixelMaps = 0;
|
|
key.clamp_color = st->clamp_frag_color_in_shader &&
|
|
ctx->Color._ClampFragmentColor;
|
|
key.lower_alpha_func = COMPARE_FUNC_ALWAYS;
|
|
|
|
fpv = st_get_fp_variant(st, st->fp, &key);
|
|
|
|
return fpv;
|
|
}
|
|
|
|
|
|
/**
|
|
* Clamp glDrawPixels width and height to the maximum texture size.
|
|
*/
|
|
static void
|
|
clamp_size(struct st_context *st, GLsizei *width, GLsizei *height,
|
|
struct gl_pixelstore_attrib *unpack)
|
|
{
|
|
const int maxSize = st->screen->get_param(st->screen,
|
|
PIPE_CAP_MAX_TEXTURE_2D_SIZE);
|
|
|
|
if (*width > maxSize) {
|
|
if (unpack->RowLength == 0)
|
|
unpack->RowLength = *width;
|
|
*width = maxSize;
|
|
}
|
|
if (*height > maxSize) {
|
|
*height = maxSize;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Search the array of 4 swizzle components for the named component and return
|
|
* its position.
|
|
*/
|
|
static unsigned
|
|
search_swizzle(const unsigned char swizzle[4], unsigned component)
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < 4; i++) {
|
|
if (swizzle[i] == component)
|
|
return i;
|
|
}
|
|
assert(!"search_swizzle() failed");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set the sampler view's swizzle terms. This is used to handle RGBA
|
|
* swizzling when the incoming image format isn't an exact match for
|
|
* the actual texture format. For example, if we have glDrawPixels(
|
|
* GL_RGBA, GL_UNSIGNED_BYTE) and we chose the texture format
|
|
* PIPE_FORMAT_B8G8R8A8 then we can do use the sampler view swizzle to
|
|
* avoid swizzling all the pixels in software in the texstore code.
|
|
*/
|
|
static void
|
|
setup_sampler_swizzle(struct pipe_sampler_view *sv, GLenum format, GLenum type)
|
|
{
|
|
if ((format == GL_RGBA || format == GL_BGRA) && type == GL_UNSIGNED_BYTE) {
|
|
const struct util_format_description *desc =
|
|
util_format_description(sv->format);
|
|
unsigned c0, c1, c2, c3;
|
|
|
|
/* Every gallium driver supports at least one 32-bit packed RGBA format.
|
|
* We must have chosen one for (GL_RGBA, GL_UNSIGNED_BYTE).
|
|
*/
|
|
assert(desc->block.bits == 32);
|
|
|
|
/* invert the format's swizzle to setup the sampler's swizzle */
|
|
if (format == GL_RGBA) {
|
|
c0 = PIPE_SWIZZLE_X;
|
|
c1 = PIPE_SWIZZLE_Y;
|
|
c2 = PIPE_SWIZZLE_Z;
|
|
c3 = PIPE_SWIZZLE_W;
|
|
}
|
|
else {
|
|
assert(format == GL_BGRA);
|
|
c0 = PIPE_SWIZZLE_Z;
|
|
c1 = PIPE_SWIZZLE_Y;
|
|
c2 = PIPE_SWIZZLE_X;
|
|
c3 = PIPE_SWIZZLE_W;
|
|
}
|
|
sv->swizzle_r = search_swizzle(desc->swizzle, c0);
|
|
sv->swizzle_g = search_swizzle(desc->swizzle, c1);
|
|
sv->swizzle_b = search_swizzle(desc->swizzle, c2);
|
|
sv->swizzle_a = search_swizzle(desc->swizzle, c3);
|
|
}
|
|
else {
|
|
/* use the default sampler swizzle */
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Compute the effective raster z position. This performs depth-clamping
|
|
* if needed.
|
|
*/
|
|
static float
|
|
get_effective_raster_z(struct gl_context *ctx)
|
|
{
|
|
float z = ctx->Current.RasterPos[2];
|
|
if (st_context(ctx)->clamp_frag_depth_in_shader) {
|
|
GLfloat depth_near;
|
|
GLfloat depth_far;
|
|
if (ctx->ViewportArray[0].Near < ctx->ViewportArray[0].Far) {
|
|
depth_near = ctx->ViewportArray[0].Near;
|
|
depth_far = ctx->ViewportArray[0].Far;
|
|
} else {
|
|
depth_near = ctx->ViewportArray[0].Far;
|
|
depth_far = ctx->ViewportArray[0].Near;
|
|
}
|
|
|
|
if (ctx->Transform.DepthClampNear)
|
|
z = MAX2(z, depth_near);
|
|
if (ctx->Transform.DepthClampFar)
|
|
z = MIN2(z, depth_far);
|
|
}
|
|
return z;
|
|
}
|
|
|
|
|
|
/**
|
|
* Called via ctx->Driver.DrawPixels()
|
|
*/
|
|
static void
|
|
st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
|
|
GLsizei width, GLsizei height,
|
|
GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack, const void *pixels)
|
|
{
|
|
void *driver_fp;
|
|
struct st_context *st = st_context(ctx);
|
|
GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;
|
|
struct pipe_sampler_view *sv[2] = { NULL };
|
|
int num_sampler_view = 1;
|
|
struct gl_pixelstore_attrib clippedUnpack;
|
|
struct st_fp_variant *fpv = NULL;
|
|
struct pipe_resource *pt;
|
|
|
|
/* Mesa state should be up to date by now */
|
|
assert(ctx->NewState == 0x0);
|
|
|
|
_mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
|
|
|
|
st_flush_bitmap_cache(st);
|
|
st_invalidate_readpix_cache(st);
|
|
|
|
st_validate_state(st, ST_PIPELINE_META);
|
|
|
|
clippedUnpack = *unpack;
|
|
unpack = &clippedUnpack;
|
|
|
|
/* Skip totally clipped DrawPixels. */
|
|
if (ctx->Pixel.ZoomX == 1 && ctx->Pixel.ZoomY == 1 &&
|
|
!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height, &clippedUnpack))
|
|
return;
|
|
|
|
/* Limit the size of the glDrawPixels to the max texture size.
|
|
* Strictly speaking, that's not correct but since we don't handle
|
|
* larger images yet, this is better than crashing.
|
|
*/
|
|
clamp_size(st, &width, &height, &clippedUnpack);
|
|
|
|
if (format == GL_DEPTH_STENCIL)
|
|
write_stencil = write_depth = GL_TRUE;
|
|
else if (format == GL_STENCIL_INDEX)
|
|
write_stencil = GL_TRUE;
|
|
else if (format == GL_DEPTH_COMPONENT)
|
|
write_depth = GL_TRUE;
|
|
|
|
if (write_stencil &&
|
|
!st->screen->get_param(st->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
|
|
/* software fallback */
|
|
draw_stencil_pixels(ctx, x, y, width, height, format, type,
|
|
unpack, pixels);
|
|
return;
|
|
}
|
|
|
|
/* Put glDrawPixels image into a texture */
|
|
pt = make_texture(st, width, height, format, type, unpack, pixels);
|
|
if (!pt) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
|
|
return;
|
|
}
|
|
|
|
st_make_passthrough_vertex_shader(st);
|
|
|
|
/*
|
|
* Get vertex/fragment shaders
|
|
*/
|
|
if (write_depth || write_stencil) {
|
|
driver_fp = get_drawpix_z_stencil_program(st, write_depth,
|
|
write_stencil);
|
|
}
|
|
else {
|
|
fpv = (format != GL_COLOR_INDEX) ? get_color_fp_variant(st) :
|
|
get_color_index_fp_variant(st);
|
|
|
|
driver_fp = fpv->base.driver_shader;
|
|
|
|
if (ctx->Pixel.MapColorFlag && format != GL_COLOR_INDEX) {
|
|
pipe_sampler_view_reference(&sv[1],
|
|
st->pixel_xfer.pixelmap_sampler_view);
|
|
num_sampler_view++;
|
|
}
|
|
|
|
/* compiling a new fragment shader variant added new state constants
|
|
* into the constant buffer, we need to update them
|
|
*/
|
|
st_upload_constants(st, &st->fp->Base, MESA_SHADER_FRAGMENT);
|
|
}
|
|
|
|
{
|
|
/* create sampler view for the image */
|
|
struct pipe_sampler_view templ;
|
|
|
|
u_sampler_view_default_template(&templ, pt, pt->format);
|
|
/* Set up the sampler view's swizzle */
|
|
setup_sampler_swizzle(&templ, format, type);
|
|
|
|
sv[0] = st->pipe->create_sampler_view(st->pipe, pt, &templ);
|
|
}
|
|
if (!sv[0]) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
|
|
pipe_resource_reference(&pt, NULL);
|
|
return;
|
|
}
|
|
|
|
/* Create a second sampler view to read stencil. The stencil is
|
|
* written using the shader stencil export functionality.
|
|
*/
|
|
if (write_stencil) {
|
|
enum pipe_format stencil_format =
|
|
util_format_stencil_only(pt->format);
|
|
/* we should not be doing pixel map/transfer (see above) */
|
|
assert(num_sampler_view == 1);
|
|
sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
|
|
stencil_format);
|
|
if (!sv[1]) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels");
|
|
pipe_resource_reference(&pt, NULL);
|
|
pipe_sampler_view_reference(&sv[0], NULL);
|
|
return;
|
|
}
|
|
num_sampler_view++;
|
|
}
|
|
|
|
draw_textured_quad(ctx, x, y, get_effective_raster_z(ctx),
|
|
width, height,
|
|
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
|
|
sv,
|
|
num_sampler_view,
|
|
st->passthrough_vs,
|
|
driver_fp, fpv,
|
|
ctx->Current.RasterColor,
|
|
GL_FALSE, write_depth, write_stencil);
|
|
|
|
/* free the texture (but may persist in the cache) */
|
|
pipe_resource_reference(&pt, NULL);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Software fallback for glCopyPixels(GL_STENCIL).
|
|
*/
|
|
static void
|
|
copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty)
|
|
{
|
|
struct st_renderbuffer *rbDraw;
|
|
struct pipe_context *pipe = st_context(ctx)->pipe;
|
|
enum pipe_map_flags usage;
|
|
struct pipe_transfer *ptDraw;
|
|
ubyte *drawMap;
|
|
ubyte *buffer;
|
|
int i;
|
|
|
|
buffer = malloc(width * height * sizeof(ubyte));
|
|
if (!buffer) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)");
|
|
return;
|
|
}
|
|
|
|
/* Get the dest renderbuffer */
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->
|
|
Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
|
|
/* this will do stencil pixel transfer ops */
|
|
_mesa_readpixels(ctx, srcx, srcy, width, height,
|
|
GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,
|
|
&ctx->DefaultPacking, buffer);
|
|
|
|
if (0) {
|
|
/* debug code: dump stencil values */
|
|
GLint row, col;
|
|
for (row = 0; row < height; row++) {
|
|
printf("%3d: ", row);
|
|
for (col = 0; col < width; col++) {
|
|
printf("%02x ", buffer[col + row * width]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
if (_mesa_is_format_packed_depth_stencil(rbDraw->Base.Format))
|
|
usage = PIPE_MAP_READ_WRITE;
|
|
else
|
|
usage = PIPE_MAP_WRITE;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
dsty = rbDraw->Base.Height - dsty - height;
|
|
}
|
|
|
|
assert(util_format_get_blockwidth(rbDraw->texture->format) == 1);
|
|
assert(util_format_get_blockheight(rbDraw->texture->format) == 1);
|
|
|
|
/* map the stencil buffer */
|
|
drawMap = pipe_texture_map(pipe,
|
|
rbDraw->texture,
|
|
rbDraw->surface->u.tex.level,
|
|
rbDraw->surface->u.tex.first_layer,
|
|
usage, dstx, dsty,
|
|
width, height, &ptDraw);
|
|
|
|
/* draw */
|
|
/* XXX PixelZoom not handled yet */
|
|
for (i = 0; i < height; i++) {
|
|
ubyte *dst;
|
|
const ubyte *src;
|
|
int y;
|
|
|
|
y = i;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
y = height - y - 1;
|
|
}
|
|
|
|
dst = drawMap + y * ptDraw->stride;
|
|
src = buffer + i * width;
|
|
|
|
_mesa_pack_ubyte_stencil_row(rbDraw->Base.Format, width, src, dst);
|
|
}
|
|
|
|
free(buffer);
|
|
|
|
/* unmap the stencil buffer */
|
|
pipe_texture_unmap(pipe, ptDraw);
|
|
}
|
|
|
|
|
|
/**
|
|
* Return renderbuffer to use for reading color pixels for glCopyPixels
|
|
*/
|
|
static struct st_renderbuffer *
|
|
st_get_color_read_renderbuffer(struct gl_context *ctx)
|
|
{
|
|
struct gl_framebuffer *fb = ctx->ReadBuffer;
|
|
struct st_renderbuffer *strb =
|
|
st_renderbuffer(fb->_ColorReadBuffer);
|
|
|
|
return strb;
|
|
}
|
|
|
|
|
|
/**
|
|
* Try to do a glCopyPixels for simple cases with a blit by calling
|
|
* pipe->blit().
|
|
*
|
|
* We can do this when we're copying color pixels (depth/stencil
|
|
* eventually) with no pixel zoom, no pixel transfer ops, no
|
|
* per-fragment ops, and the src/dest regions don't overlap.
|
|
*/
|
|
static GLboolean
|
|
blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty, GLenum type)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct pipe_screen *screen = st->screen;
|
|
struct gl_pixelstore_attrib pack, unpack;
|
|
GLint readX, readY, readW, readH, drawX, drawY, drawW, drawH;
|
|
|
|
if (type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV)
|
|
return GL_FALSE;
|
|
|
|
if (ctx->Pixel.ZoomX == 1.0 &&
|
|
ctx->Pixel.ZoomY == 1.0 &&
|
|
(type != GL_COLOR ||
|
|
(ctx->_ImageTransferState == 0x0 &&
|
|
!ctx->Color.BlendEnabled &&
|
|
!ctx->Color.AlphaEnabled &&
|
|
(!ctx->Color.ColorLogicOpEnabled || ctx->Color.LogicOp == GL_COPY) &&
|
|
!ctx->Depth.BoundsTest &&
|
|
(!ctx->Depth.Test || (ctx->Depth.Func == GL_ALWAYS && !ctx->Depth.Mask)) &&
|
|
!ctx->Fog.Enabled &&
|
|
(!ctx->Stencil.Enabled ||
|
|
(ctx->Stencil.FailFunc[0] == GL_KEEP &&
|
|
ctx->Stencil.ZPassFunc[0] == GL_KEEP &&
|
|
ctx->Stencil.ZFailFunc[0] == GL_KEEP)) &&
|
|
!ctx->FragmentProgram.Enabled &&
|
|
!ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT] &&
|
|
!_mesa_ati_fragment_shader_enabled(ctx) &&
|
|
ctx->DrawBuffer->_NumColorDrawBuffers == 1)) &&
|
|
!ctx->Query.CurrentOcclusionObject) {
|
|
struct st_renderbuffer *rbRead, *rbDraw;
|
|
|
|
/*
|
|
* Clip the read region against the src buffer bounds.
|
|
* We'll still allocate a temporary buffer/texture for the original
|
|
* src region size but we'll only read the region which is on-screen.
|
|
* This may mean that we draw garbage pixels into the dest region, but
|
|
* that's expected.
|
|
*/
|
|
readX = srcx;
|
|
readY = srcy;
|
|
readW = width;
|
|
readH = height;
|
|
pack = ctx->DefaultPacking;
|
|
if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack))
|
|
return GL_TRUE; /* all done */
|
|
|
|
/* clip against dest buffer bounds and scissor box */
|
|
drawX = dstx + pack.SkipPixels;
|
|
drawY = dsty + pack.SkipRows;
|
|
unpack = pack;
|
|
if (!_mesa_clip_drawpixels(ctx, &drawX, &drawY, &readW, &readH, &unpack))
|
|
return GL_TRUE; /* all done */
|
|
|
|
readX = readX - pack.SkipPixels + unpack.SkipPixels;
|
|
readY = readY - pack.SkipRows + unpack.SkipRows;
|
|
|
|
drawW = readW;
|
|
drawH = readH;
|
|
|
|
if (type == GL_COLOR) {
|
|
rbRead = st_get_color_read_renderbuffer(ctx);
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
} else if (type == GL_DEPTH || type == GL_DEPTH_STENCIL) {
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
} else if (type == GL_STENCIL) {
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
/* Flip src/dst position depending on the orientation of buffers. */
|
|
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
|
|
readY = rbRead->Base.Height - readY;
|
|
readH = -readH;
|
|
}
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
/* We can't flip the destination for pipe->blit, so we only adjust
|
|
* its position and flip the source.
|
|
*/
|
|
drawY = rbDraw->Base.Height - drawY - drawH;
|
|
readY += readH;
|
|
readH = -readH;
|
|
}
|
|
|
|
if (rbRead != rbDraw ||
|
|
!_mesa_regions_overlap(readX, readY, readX + readW, readY + readH,
|
|
drawX, drawY, drawX + drawW, drawY + drawH)) {
|
|
struct pipe_blit_info blit;
|
|
|
|
memset(&blit, 0, sizeof(blit));
|
|
blit.src.resource = rbRead->texture;
|
|
blit.src.level = rbRead->surface->u.tex.level;
|
|
blit.src.format = rbRead->texture->format;
|
|
blit.src.box.x = readX;
|
|
blit.src.box.y = readY;
|
|
blit.src.box.z = rbRead->surface->u.tex.first_layer;
|
|
blit.src.box.width = readW;
|
|
blit.src.box.height = readH;
|
|
blit.src.box.depth = 1;
|
|
blit.dst.resource = rbDraw->texture;
|
|
blit.dst.level = rbDraw->surface->u.tex.level;
|
|
blit.dst.format = rbDraw->texture->format;
|
|
blit.dst.box.x = drawX;
|
|
blit.dst.box.y = drawY;
|
|
blit.dst.box.z = rbDraw->surface->u.tex.first_layer;
|
|
blit.dst.box.width = drawW;
|
|
blit.dst.box.height = drawH;
|
|
blit.dst.box.depth = 1;
|
|
blit.filter = PIPE_TEX_FILTER_NEAREST;
|
|
blit.render_condition_enable = ctx->Query.CondRenderQuery != NULL;
|
|
|
|
if (type == GL_COLOR)
|
|
blit.mask |= PIPE_MASK_RGBA;
|
|
if (type == GL_DEPTH)
|
|
blit.mask |= PIPE_MASK_Z;
|
|
if (type == GL_STENCIL)
|
|
blit.mask |= PIPE_MASK_S;
|
|
if (type == GL_DEPTH_STENCIL)
|
|
blit.mask |= PIPE_MASK_ZS;
|
|
|
|
if (ctx->DrawBuffer != ctx->WinSysDrawBuffer)
|
|
st_window_rectangles_to_blit(ctx, &blit);
|
|
|
|
if (screen->is_format_supported(screen, blit.src.format,
|
|
blit.src.resource->target,
|
|
blit.src.resource->nr_samples,
|
|
blit.src.resource->nr_storage_samples,
|
|
PIPE_BIND_SAMPLER_VIEW) &&
|
|
screen->is_format_supported(screen, blit.dst.format,
|
|
blit.dst.resource->target,
|
|
blit.dst.resource->nr_samples,
|
|
blit.dst.resource->nr_storage_samples,
|
|
PIPE_BIND_RENDER_TARGET)) {
|
|
pipe->blit(pipe, &blit);
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return GL_FALSE;
|
|
}
|
|
|
|
|
|
static void
|
|
st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty, GLenum type)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct pipe_screen *screen = st->screen;
|
|
struct st_renderbuffer *rbRead;
|
|
void *driver_fp;
|
|
struct pipe_resource *pt;
|
|
struct pipe_sampler_view *sv[2] = { NULL };
|
|
struct st_fp_variant *fpv = NULL;
|
|
int num_sampler_view = 1;
|
|
enum pipe_format srcFormat;
|
|
unsigned srcBind;
|
|
GLboolean invertTex = GL_FALSE;
|
|
GLint readX, readY, readW, readH;
|
|
struct gl_pixelstore_attrib pack = ctx->DefaultPacking;
|
|
GLboolean write_stencil = GL_FALSE;
|
|
GLboolean write_depth = GL_FALSE;
|
|
|
|
_mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer);
|
|
|
|
st_flush_bitmap_cache(st);
|
|
st_invalidate_readpix_cache(st);
|
|
|
|
st_validate_state(st, ST_PIPELINE_META);
|
|
|
|
if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type))
|
|
return;
|
|
|
|
/* fallback if the driver can't do stencil exports */
|
|
if (type == GL_DEPTH_STENCIL &&
|
|
!st->screen->get_param(st->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
|
|
st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_STENCIL);
|
|
st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_DEPTH);
|
|
return;
|
|
}
|
|
|
|
/* fallback if the driver can't do stencil exports */
|
|
if (type == GL_STENCIL &&
|
|
!st->screen->get_param(st->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
|
|
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* The subsequent code implements glCopyPixels by copying the source
|
|
* pixels into a temporary texture that's then applied to a textured quad.
|
|
* When we draw the textured quad, all the usual per-fragment operations
|
|
* are handled.
|
|
*/
|
|
|
|
st_make_passthrough_vertex_shader(st);
|
|
|
|
/*
|
|
* Get vertex/fragment shaders
|
|
*/
|
|
if (type == GL_COLOR) {
|
|
fpv = get_color_fp_variant(st);
|
|
|
|
rbRead = st_get_color_read_renderbuffer(ctx);
|
|
|
|
driver_fp = fpv->base.driver_shader;
|
|
|
|
if (ctx->Pixel.MapColorFlag) {
|
|
pipe_sampler_view_reference(&sv[1],
|
|
st->pixel_xfer.pixelmap_sampler_view);
|
|
num_sampler_view++;
|
|
}
|
|
|
|
/* compiling a new fragment shader variant added new state constants
|
|
* into the constant buffer, we need to update them
|
|
*/
|
|
st_upload_constants(st, &st->fp->Base, MESA_SHADER_FRAGMENT);
|
|
} else if (type == GL_DEPTH) {
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->
|
|
Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
driver_fp = get_drawpix_z_stencil_program(st, GL_TRUE, GL_FALSE);
|
|
} else if (type == GL_STENCIL) {
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->
|
|
Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
driver_fp = get_drawpix_z_stencil_program(st, GL_FALSE, GL_TRUE);
|
|
} else if (type == GL_DEPTH_STENCIL) {
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->
|
|
Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
driver_fp = get_drawpix_z_stencil_program(st, GL_TRUE, GL_TRUE);
|
|
} else {
|
|
assert(type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV);
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->
|
|
Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
if (type == GL_DEPTH_STENCIL_TO_RGBA_NV)
|
|
driver_fp = get_drawpix_zs_to_color_program(st, GL_TRUE);
|
|
else
|
|
driver_fp = get_drawpix_zs_to_color_program(st, GL_FALSE);
|
|
if (!driver_fp) {
|
|
assert(0 && "operation not supported by CopyPixels implemetation");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/* Choose the format for the temporary texture. */
|
|
srcFormat = rbRead->texture->format;
|
|
srcBind = PIPE_BIND_SAMPLER_VIEW |
|
|
(type == GL_COLOR ? PIPE_BIND_RENDER_TARGET : PIPE_BIND_DEPTH_STENCIL);
|
|
|
|
if (!screen->is_format_supported(screen, srcFormat, st->internal_target, 0,
|
|
0, srcBind)) {
|
|
/* srcFormat is non-renderable. Find a compatible renderable format. */
|
|
if (type == GL_DEPTH) {
|
|
srcFormat = st_choose_format(st, GL_DEPTH_COMPONENT, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
else if (type == GL_STENCIL) {
|
|
/* can't use texturing, fallback to copy */
|
|
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
|
|
return;
|
|
}
|
|
else {
|
|
assert(type == GL_COLOR);
|
|
|
|
if (util_format_is_float(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32F, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
else if (util_format_is_pure_sint(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32I, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
else if (util_format_is_pure_uint(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32UI, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
else if (util_format_is_snorm(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA16_SNORM, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
else {
|
|
srcFormat = st_choose_format(st, GL_RGBA, GL_NONE,
|
|
GL_NONE, st->internal_target, 0, 0,
|
|
srcBind, false, false);
|
|
}
|
|
}
|
|
|
|
if (srcFormat == PIPE_FORMAT_NONE) {
|
|
assert(0 && "cannot choose a format for src of CopyPixels");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Invert src region if needed */
|
|
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
|
|
srcy = ctx->ReadBuffer->Height - srcy - height;
|
|
invertTex = !invertTex;
|
|
}
|
|
|
|
/* Clip the read region against the src buffer bounds.
|
|
* We'll still allocate a temporary buffer/texture for the original
|
|
* src region size but we'll only read the region which is on-screen.
|
|
* This may mean that we draw garbage pixels into the dest region, but
|
|
* that's expected.
|
|
*/
|
|
readX = srcx;
|
|
readY = srcy;
|
|
readW = width;
|
|
readH = height;
|
|
if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack)) {
|
|
/* The source region is completely out of bounds. Do nothing.
|
|
* The GL spec says "Results of copies from outside the window,
|
|
* or from regions of the window that are not exposed, are
|
|
* hardware dependent and undefined."
|
|
*/
|
|
return;
|
|
}
|
|
|
|
readW = MAX2(0, readW);
|
|
readH = MAX2(0, readH);
|
|
|
|
/* Allocate the temporary texture. */
|
|
pt = alloc_texture(st, width, height, srcFormat, srcBind);
|
|
if (!pt)
|
|
return;
|
|
|
|
sv[0] = st_create_texture_sampler_view(st->pipe, pt);
|
|
if (!sv[0]) {
|
|
pipe_resource_reference(&pt, NULL);
|
|
return;
|
|
}
|
|
|
|
/* Create a second sampler view to read stencil */
|
|
if (type == GL_STENCIL || type == GL_DEPTH_STENCIL ||
|
|
type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV) {
|
|
write_stencil = GL_TRUE;
|
|
if (type == GL_DEPTH_STENCIL)
|
|
write_depth = GL_TRUE;
|
|
if (type == GL_DEPTH_STENCIL_TO_RGBA_NV || type == GL_DEPTH_STENCIL_TO_BGRA_NV) {
|
|
write_depth = FALSE;
|
|
write_stencil = FALSE;
|
|
}
|
|
|
|
enum pipe_format stencil_format =
|
|
util_format_stencil_only(pt->format);
|
|
/* we should not be doing pixel map/transfer (see above) */
|
|
assert(num_sampler_view == 1);
|
|
sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
|
|
stencil_format);
|
|
if (!sv[1]) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels");
|
|
pipe_resource_reference(&pt, NULL);
|
|
pipe_sampler_view_reference(&sv[0], NULL);
|
|
return;
|
|
}
|
|
num_sampler_view++;
|
|
}
|
|
/* Copy the src region to the temporary texture. */
|
|
{
|
|
struct pipe_blit_info blit;
|
|
|
|
memset(&blit, 0, sizeof(blit));
|
|
blit.src.resource = rbRead->texture;
|
|
blit.src.level = rbRead->surface->u.tex.level;
|
|
blit.src.format = rbRead->texture->format;
|
|
blit.src.box.x = readX;
|
|
blit.src.box.y = readY;
|
|
blit.src.box.z = rbRead->surface->u.tex.first_layer;
|
|
blit.src.box.width = readW;
|
|
blit.src.box.height = readH;
|
|
blit.src.box.depth = 1;
|
|
blit.dst.resource = pt;
|
|
blit.dst.level = 0;
|
|
blit.dst.format = pt->format;
|
|
blit.dst.box.x = pack.SkipPixels;
|
|
blit.dst.box.y = pack.SkipRows;
|
|
blit.dst.box.z = 0;
|
|
blit.dst.box.width = readW;
|
|
blit.dst.box.height = readH;
|
|
blit.dst.box.depth = 1;
|
|
if (type == GL_DEPTH)
|
|
blit.mask = util_format_get_mask(pt->format) & ~PIPE_MASK_S;
|
|
else if (type == GL_STENCIL)
|
|
blit.mask = util_format_get_mask(pt->format) & ~PIPE_MASK_Z;
|
|
else
|
|
blit.mask = util_format_get_mask(pt->format);
|
|
blit.filter = PIPE_TEX_FILTER_NEAREST;
|
|
|
|
pipe->blit(pipe, &blit);
|
|
}
|
|
|
|
/* OK, the texture 'pt' contains the src image/pixels. Now draw a
|
|
* textured quad with that texture.
|
|
*/
|
|
|
|
draw_textured_quad(ctx, dstx, dsty, get_effective_raster_z(ctx),
|
|
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
|
|
sv,
|
|
num_sampler_view,
|
|
st->passthrough_vs,
|
|
driver_fp, fpv,
|
|
ctx->Current.Attrib[VERT_ATTRIB_COLOR0],
|
|
invertTex, write_depth, write_stencil);
|
|
|
|
pipe_resource_reference(&pt, NULL);
|
|
}
|
|
|
|
|
|
|
|
void st_init_drawpixels_functions(struct dd_function_table *functions)
|
|
{
|
|
functions->DrawPixels = st_DrawPixels;
|
|
functions->CopyPixels = st_CopyPixels;
|
|
}
|
|
|
|
|
|
void
|
|
st_destroy_drawpix(struct st_context *st)
|
|
{
|
|
GLuint i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(st->drawpix.zs_shaders); i++) {
|
|
if (st->drawpix.zs_shaders[i])
|
|
st->pipe->delete_fs_state(st->pipe, st->drawpix.zs_shaders[i]);
|
|
}
|
|
|
|
if (st->passthrough_vs)
|
|
st->pipe->delete_vs_state(st->pipe, st->passthrough_vs);
|
|
|
|
/* Free cache data */
|
|
for (i = 0; i < ARRAY_SIZE(st->drawpix_cache.entries); i++) {
|
|
struct drawpix_cache_entry *entry = &st->drawpix_cache.entries[i];
|
|
free(entry->image);
|
|
pipe_resource_reference(&entry->texture, NULL);
|
|
}
|
|
}
|