790 lines
24 KiB
C
790 lines
24 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/dlist.h"
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#include "main/framebuffer.h"
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#include "main/macros.h"
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#include "main/pbo.h"
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#include "program/program.h"
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#include "program/prog_print.h"
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#include "st_context.h"
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#include "st_atom.h"
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#include "st_atom_constbuf.h"
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#include "st_draw.h"
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#include "st_program.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_sampler_view.h"
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#include "st_texture.h"
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#include "st_util.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "pipe/p_shader_tokens.h"
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#include "util/u_inlines.h"
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#include "util/u_upload_mgr.h"
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#include "program/prog_instruction.h"
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#include "cso_cache/cso_context.h"
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/**
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* glBitmaps are drawn as textured quads. The user's bitmap pattern
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* is stored in a texture image. An alpha8 texture format is used.
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* The fragment shader samples a bit (texel) from the texture, then
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* discards the fragment if the bit is off.
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*
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* Note that we actually store the inverse image of the bitmap to
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* simplify the fragment program. An "on" bit gets stored as texel=0x0
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* and an "off" bit is stored as texel=0xff. Then we kill the
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* fragment if the negated texel value is less than zero.
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*/
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/**
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* The bitmap cache attempts to accumulate multiple glBitmap calls in a
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* buffer which is then rendered en mass upon a flush, state change, etc.
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* A wide, short buffer is used to target the common case of a series
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* of glBitmap calls being used to draw text.
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*/
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static GLboolean UseBitmapCache = GL_TRUE;
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#define BITMAP_CACHE_WIDTH 512
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#define BITMAP_CACHE_HEIGHT 32
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/** Epsilon for Z comparisons */
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#define Z_EPSILON 1e-06
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/**
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* Copy user-provide bitmap bits into texture buffer, expanding
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* bits into texels.
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* "On" bits will set texels to 0x0.
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* "Off" bits will not modify texels.
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* Note that the image is actually going to be upside down in
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* the texture. We deal with that with texcoords.
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*/
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static void
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unpack_bitmap(struct st_context *st,
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GLint px, GLint py, GLsizei width, GLsizei height,
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const struct gl_pixelstore_attrib *unpack,
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const GLubyte *bitmap,
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ubyte *destBuffer, uint destStride)
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{
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destBuffer += py * destStride + px;
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_mesa_expand_bitmap(width, height, unpack, bitmap,
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destBuffer, destStride, 0x0);
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}
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/**
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* Create a texture which represents a bitmap image.
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*/
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static struct pipe_resource *
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make_bitmap_texture(struct gl_context *ctx, GLsizei width, GLsizei height,
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const struct gl_pixelstore_attrib *unpack,
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const GLubyte *bitmap)
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{
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struct st_context *st = st_context(ctx);
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struct pipe_context *pipe = st->pipe;
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struct pipe_transfer *transfer;
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ubyte *dest;
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struct pipe_resource *pt;
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/* PBO source... */
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bitmap = _mesa_map_pbo_source(ctx, unpack, bitmap);
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if (!bitmap) {
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return NULL;
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}
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/**
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* Create texture to hold bitmap pattern.
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*/
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pt = st_texture_create(st, st->internal_target, st->bitmap.tex_format,
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0, width, height, 1, 1, 0,
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PIPE_BIND_SAMPLER_VIEW, false);
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if (!pt) {
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_mesa_unmap_pbo_source(ctx, unpack);
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return NULL;
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}
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dest = pipe_texture_map(st->pipe, pt, 0, 0,
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PIPE_MAP_WRITE,
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0, 0, width, height, &transfer);
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/* Put image into texture transfer */
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memset(dest, 0xff, height * transfer->stride);
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unpack_bitmap(st, 0, 0, width, height, unpack, bitmap,
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dest, transfer->stride);
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_mesa_unmap_pbo_source(ctx, unpack);
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/* Release transfer */
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pipe_texture_unmap(pipe, transfer);
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return pt;
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}
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/**
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* Setup pipeline state prior to rendering the bitmap textured quad.
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*/
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static void
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setup_render_state(struct gl_context *ctx,
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struct pipe_sampler_view *sv,
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const GLfloat *color,
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bool atlas)
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{
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struct st_context *st = st_context(ctx);
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struct pipe_context *pipe = st->pipe;
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struct cso_context *cso = st->cso_context;
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struct st_fp_variant *fpv;
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struct st_fp_variant_key key;
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memset(&key, 0, sizeof(key));
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key.st = st->has_shareable_shaders ? NULL : st;
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key.bitmap = GL_TRUE;
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key.clamp_color = st->clamp_frag_color_in_shader &&
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ctx->Color._ClampFragmentColor;
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key.lower_alpha_func = COMPARE_FUNC_ALWAYS;
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fpv = st_get_fp_variant(st, st->fp, &key);
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/* As an optimization, Mesa's fragment programs will sometimes get the
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* primary color from a statevar/constant rather than a varying variable.
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* when that's the case, we need to ensure that we use the 'color'
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* parameter and not the current attribute color (which may have changed
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* through glRasterPos and state validation.
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* So, we force the proper color here. Not elegant, but it works.
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*/
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{
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GLfloat colorSave[4];
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COPY_4V(colorSave, ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
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COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], color);
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st_upload_constants(st, st->fp, MESA_SHADER_FRAGMENT);
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COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave);
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}
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cso_save_state(cso, (CSO_BIT_RASTERIZER |
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CSO_BIT_FRAGMENT_SAMPLERS |
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CSO_BIT_VIEWPORT |
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CSO_BIT_STREAM_OUTPUTS |
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CSO_BIT_VERTEX_ELEMENTS |
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CSO_BITS_ALL_SHADERS));
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/* rasterizer state: just scissor */
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st->bitmap.rasterizer.scissor = ctx->Scissor.EnableFlags & 1;
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cso_set_rasterizer(cso, &st->bitmap.rasterizer);
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/* fragment shader state: TEX lookup program */
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cso_set_fragment_shader_handle(cso, fpv->base.driver_shader);
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/* vertex shader state: position + texcoord pass-through */
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cso_set_vertex_shader_handle(cso, st->passthrough_vs);
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/* disable other shaders */
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cso_set_tessctrl_shader_handle(cso, NULL);
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cso_set_tesseval_shader_handle(cso, NULL);
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cso_set_geometry_shader_handle(cso, NULL);
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/* user samplers, plus our bitmap sampler */
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{
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struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
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uint num = MAX2(fpv->bitmap_sampler + 1,
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st->state.num_frag_samplers);
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uint i;
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for (i = 0; i < st->state.num_frag_samplers; i++) {
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samplers[i] = &st->state.frag_samplers[i];
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}
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if (atlas)
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samplers[fpv->bitmap_sampler] = &st->bitmap.atlas_sampler;
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else
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samplers[fpv->bitmap_sampler] = &st->bitmap.sampler;
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cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num,
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(const struct pipe_sampler_state **) samplers);
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}
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/* user textures, plus the bitmap texture */
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{
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struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
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unsigned num_views =
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st_get_sampler_views(st, PIPE_SHADER_FRAGMENT,
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ctx->FragmentProgram._Current, sampler_views);
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num_views = MAX2(fpv->bitmap_sampler + 1, num_views);
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sampler_views[fpv->bitmap_sampler] = sv;
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pipe->set_sampler_views(pipe, PIPE_SHADER_FRAGMENT, 0, num_views, 0,
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true, sampler_views);
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st->state.num_sampler_views[PIPE_SHADER_FRAGMENT] = num_views;
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}
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/* viewport state: viewport matching window dims */
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cso_set_viewport_dims(cso, st->state.fb_width,
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st->state.fb_height,
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st->state.fb_orientation == Y_0_TOP);
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st->util_velems.count = 3;
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cso_set_vertex_elements(cso, &st->util_velems);
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cso_set_stream_outputs(st->cso_context, 0, NULL, NULL);
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}
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/**
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* Restore pipeline state after rendering the bitmap textured quad.
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*/
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static void
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restore_render_state(struct gl_context *ctx)
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{
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struct st_context *st = st_context(ctx);
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struct cso_context *cso = st->cso_context;
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/* Unbind all because st/mesa won't do it if the current shader doesn't
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* use them.
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*/
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cso_restore_state(cso, CSO_UNBIND_FS_SAMPLERVIEWS);
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st->state.num_sampler_views[PIPE_SHADER_FRAGMENT] = 0;
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ctx->Array.NewVertexElements = true;
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st->dirty |= ST_NEW_VERTEX_ARRAYS |
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ST_NEW_FS_SAMPLER_VIEWS;
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}
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/**
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* Render a glBitmap by drawing a textured quad
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*/
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static void
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draw_bitmap_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
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GLsizei width, GLsizei height,
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struct pipe_sampler_view *sv,
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const GLfloat *color)
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{
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struct st_context *st = st_context(ctx);
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const float fb_width = (float) st->state.fb_width;
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const float fb_height = (float) st->state.fb_height;
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const float x0 = (float) x;
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const float x1 = (float) (x + width);
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const float y0 = (float) y;
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const float y1 = (float) (y + height);
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float sLeft = 0.0f, sRight = 1.0f;
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float tTop = 0.0f, tBot = 1.0f - tTop;
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const float clip_x0 = x0 / fb_width * 2.0f - 1.0f;
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const float clip_y0 = y0 / fb_height * 2.0f - 1.0f;
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const float clip_x1 = x1 / fb_width * 2.0f - 1.0f;
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const float clip_y1 = y1 / fb_height * 2.0f - 1.0f;
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/* limit checks */
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{
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/* XXX if the bitmap is larger than the max texture size, break
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* it up into chunks.
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*/
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ASSERTED GLuint maxSize =
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st->screen->get_param(st->screen, PIPE_CAP_MAX_TEXTURE_2D_SIZE);
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assert(width <= (GLsizei) maxSize);
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assert(height <= (GLsizei) maxSize);
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}
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setup_render_state(ctx, sv, color, false);
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/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
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z = z * 2.0f - 1.0f;
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if (sv->texture->target == PIPE_TEXTURE_RECT) {
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/* use non-normalized texcoords */
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sRight = (float) width;
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tBot = (float) height;
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}
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if (!st_draw_quad(st, clip_x0, clip_y0, clip_x1, clip_y1, z,
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sLeft, tBot, sRight, tTop, color, 0)) {
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_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBitmap");
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}
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restore_render_state(ctx);
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/* We uploaded modified constants, need to invalidate them. */
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st->dirty |= ST_NEW_FS_CONSTANTS;
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}
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static void
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reset_cache(struct st_context *st)
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{
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struct st_bitmap_cache *cache = &st->bitmap.cache;
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/*memset(cache->buffer, 0xff, sizeof(cache->buffer));*/
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cache->empty = GL_TRUE;
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cache->xmin = 1000000;
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cache->xmax = -1000000;
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cache->ymin = 1000000;
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cache->ymax = -1000000;
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assert(!cache->texture);
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/* allocate a new texture */
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cache->texture = st_texture_create(st, st->internal_target,
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st->bitmap.tex_format, 0,
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BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT,
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1, 1, 0,
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PIPE_BIND_SAMPLER_VIEW,
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false);
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}
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/** Print bitmap image to stdout (debug) */
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static void
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print_cache(const struct st_bitmap_cache *cache)
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{
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int i, j, k;
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for (i = 0; i < BITMAP_CACHE_HEIGHT; i++) {
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k = BITMAP_CACHE_WIDTH * (BITMAP_CACHE_HEIGHT - i - 1);
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for (j = 0; j < BITMAP_CACHE_WIDTH; j++) {
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if (cache->buffer[k])
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printf("X");
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else
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printf(" ");
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k++;
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}
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printf("\n");
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}
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}
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/**
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* Create gallium pipe_transfer object for the bitmap cache.
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*/
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static void
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create_cache_trans(struct st_context *st)
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{
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struct pipe_context *pipe = st->pipe;
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struct st_bitmap_cache *cache = &st->bitmap.cache;
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if (cache->trans)
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return;
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/* Map the texture transfer.
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* Subsequent glBitmap calls will write into the texture image.
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*/
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cache->buffer = pipe_texture_map(pipe, cache->texture, 0, 0,
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PIPE_MAP_WRITE, 0, 0,
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BITMAP_CACHE_WIDTH,
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BITMAP_CACHE_HEIGHT, &cache->trans);
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/* init image to all 0xff */
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memset(cache->buffer, 0xff, cache->trans->stride * BITMAP_CACHE_HEIGHT);
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}
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/**
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* If there's anything in the bitmap cache, draw/flush it now.
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*/
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void
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st_flush_bitmap_cache(struct st_context *st)
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{
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struct st_bitmap_cache *cache = &st->bitmap.cache;
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if (!cache->empty) {
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struct pipe_context *pipe = st->pipe;
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struct pipe_sampler_view *sv;
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assert(cache->xmin <= cache->xmax);
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if (0)
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printf("flush bitmap, size %d x %d at %d, %d\n",
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cache->xmax - cache->xmin,
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cache->ymax - cache->ymin,
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cache->xpos, cache->ypos);
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/* The texture transfer has been mapped until now.
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* So unmap and release the texture transfer before drawing.
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*/
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if (cache->trans && cache->buffer) {
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if (0)
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print_cache(cache);
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pipe_texture_unmap(pipe, cache->trans);
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cache->buffer = NULL;
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cache->trans = NULL;
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}
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sv = st_create_texture_sampler_view(st->pipe, cache->texture);
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if (sv) {
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draw_bitmap_quad(st->ctx,
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cache->xpos,
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cache->ypos,
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cache->zpos,
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BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT,
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sv,
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cache->color);
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}
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/* release/free the texture */
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pipe_resource_reference(&cache->texture, NULL);
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reset_cache(st);
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}
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}
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/**
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* Try to accumulate this glBitmap call in the bitmap cache.
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* \return GL_TRUE for success, GL_FALSE if bitmap is too large, etc.
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*/
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static GLboolean
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accum_bitmap(struct gl_context *ctx,
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GLint x, GLint y, GLsizei width, GLsizei height,
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const struct gl_pixelstore_attrib *unpack,
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const GLubyte *bitmap )
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{
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struct st_context *st = ctx->st;
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struct st_bitmap_cache *cache = &st->bitmap.cache;
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int px = -999, py = -999;
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const GLfloat z = ctx->Current.RasterPos[2];
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if (width > BITMAP_CACHE_WIDTH ||
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height > BITMAP_CACHE_HEIGHT)
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return GL_FALSE; /* too big to cache */
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if (!cache->empty) {
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px = x - cache->xpos; /* pos in buffer */
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py = y - cache->ypos;
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if (px < 0 || px + width > BITMAP_CACHE_WIDTH ||
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py < 0 || py + height > BITMAP_CACHE_HEIGHT ||
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!TEST_EQ_4V(ctx->Current.RasterColor, cache->color) ||
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((fabsf(z - cache->zpos) > Z_EPSILON))) {
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/* This bitmap would extend beyond cache bounds, or the bitmap
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* color is changing
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* so flush and continue.
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*/
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st_flush_bitmap_cache(st);
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}
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}
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if (cache->empty) {
|
|
/* Initialize. Center bitmap vertically in the buffer. */
|
|
px = 0;
|
|
py = (BITMAP_CACHE_HEIGHT - height) / 2;
|
|
cache->xpos = x;
|
|
cache->ypos = y - py;
|
|
cache->zpos = z;
|
|
cache->empty = GL_FALSE;
|
|
COPY_4FV(cache->color, ctx->Current.RasterColor);
|
|
}
|
|
|
|
assert(px != -999);
|
|
assert(py != -999);
|
|
|
|
if (x < cache->xmin)
|
|
cache->xmin = x;
|
|
if (y < cache->ymin)
|
|
cache->ymin = y;
|
|
if (x + width > cache->xmax)
|
|
cache->xmax = x + width;
|
|
if (y + height > cache->ymax)
|
|
cache->ymax = y + height;
|
|
|
|
/* create the transfer if needed */
|
|
create_cache_trans(st);
|
|
|
|
/* PBO source... */
|
|
bitmap = _mesa_map_pbo_source(ctx, unpack, bitmap);
|
|
if (!bitmap) {
|
|
return FALSE;
|
|
}
|
|
|
|
unpack_bitmap(st, px, py, width, height, unpack, bitmap,
|
|
cache->buffer, BITMAP_CACHE_WIDTH);
|
|
|
|
_mesa_unmap_pbo_source(ctx, unpack);
|
|
|
|
return GL_TRUE; /* accumulated */
|
|
}
|
|
|
|
|
|
/**
|
|
* One-time init for drawing bitmaps.
|
|
*/
|
|
static void
|
|
init_bitmap_state(struct st_context *st)
|
|
{
|
|
struct pipe_screen *screen = st->screen;
|
|
|
|
/* This function should only be called once */
|
|
assert(!st->bitmap.tex_format);
|
|
|
|
assert(st->internal_target == PIPE_TEXTURE_2D ||
|
|
st->internal_target == PIPE_TEXTURE_RECT);
|
|
|
|
/* init sampler state once */
|
|
memset(&st->bitmap.sampler, 0, sizeof(st->bitmap.sampler));
|
|
st->bitmap.sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
st->bitmap.sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
st->bitmap.sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
|
|
st->bitmap.sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
st->bitmap.sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
|
|
st->bitmap.sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
st->bitmap.sampler.normalized_coords = st->internal_target == PIPE_TEXTURE_2D;
|
|
|
|
st->bitmap.atlas_sampler = st->bitmap.sampler;
|
|
st->bitmap.atlas_sampler.normalized_coords = 0;
|
|
|
|
/* init baseline rasterizer state once */
|
|
memset(&st->bitmap.rasterizer, 0, sizeof(st->bitmap.rasterizer));
|
|
st->bitmap.rasterizer.half_pixel_center = 1;
|
|
st->bitmap.rasterizer.bottom_edge_rule = 1;
|
|
st->bitmap.rasterizer.depth_clip_near = 1;
|
|
st->bitmap.rasterizer.depth_clip_far = 1;
|
|
|
|
/* find a usable texture format */
|
|
if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM,
|
|
st->internal_target, 0, 0,
|
|
PIPE_BIND_SAMPLER_VIEW)) {
|
|
st->bitmap.tex_format = PIPE_FORMAT_R8_UNORM;
|
|
}
|
|
else if (screen->is_format_supported(screen, PIPE_FORMAT_A8_UNORM,
|
|
st->internal_target, 0, 0,
|
|
PIPE_BIND_SAMPLER_VIEW)) {
|
|
st->bitmap.tex_format = PIPE_FORMAT_A8_UNORM;
|
|
}
|
|
else {
|
|
/* XXX support more formats */
|
|
assert(0);
|
|
}
|
|
|
|
/* Create the vertex shader */
|
|
st_make_passthrough_vertex_shader(st);
|
|
|
|
reset_cache(st);
|
|
}
|
|
|
|
void
|
|
st_Bitmap(struct gl_context *ctx, GLint x, GLint y,
|
|
GLsizei width, GLsizei height,
|
|
const struct gl_pixelstore_attrib *unpack, const GLubyte *bitmap)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_resource *pt;
|
|
|
|
assert(width > 0);
|
|
assert(height > 0);
|
|
|
|
st_invalidate_readpix_cache(st);
|
|
|
|
if (!st->bitmap.tex_format) {
|
|
init_bitmap_state(st);
|
|
}
|
|
|
|
/* We only need to validate any non-ST_NEW_CONSTANTS state. The VS we use
|
|
* for bitmap drawing uses no constants and the FS constants are
|
|
* explicitly uploaded in the draw_bitmap_quad() function.
|
|
*/
|
|
if ((st->dirty | ctx->NewDriverState) & st->active_states &
|
|
~ST_NEW_CONSTANTS & ST_PIPELINE_RENDER_STATE_MASK ||
|
|
st->gfx_shaders_may_be_dirty) {
|
|
st_validate_state(st, ST_PIPELINE_META);
|
|
}
|
|
|
|
if (UseBitmapCache && accum_bitmap(ctx, x, y, width, height, unpack, bitmap))
|
|
return;
|
|
|
|
pt = make_bitmap_texture(ctx, width, height, unpack, bitmap);
|
|
if (pt) {
|
|
struct pipe_sampler_view *sv =
|
|
st_create_texture_sampler_view(st->pipe, pt);
|
|
|
|
assert(pt->target == PIPE_TEXTURE_2D || pt->target == PIPE_TEXTURE_RECT);
|
|
|
|
if (sv) {
|
|
draw_bitmap_quad(ctx, x, y, ctx->Current.RasterPos[2],
|
|
width, height, sv, ctx->Current.RasterColor);
|
|
}
|
|
|
|
/* release/free the texture */
|
|
pipe_resource_reference(&pt, NULL);
|
|
}
|
|
}
|
|
|
|
void
|
|
st_DrawAtlasBitmaps(struct gl_context *ctx,
|
|
const struct gl_bitmap_atlas *atlas,
|
|
GLuint count, const GLubyte *ids)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct gl_texture_object *stObj = atlas->texObj;
|
|
struct pipe_sampler_view *sv;
|
|
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
|
|
const float z = ctx->Current.RasterPos[2] * 2.0f - 1.0f;
|
|
const float *color = ctx->Current.RasterColor;
|
|
const float clip_x_scale = 2.0f / st->state.fb_width;
|
|
const float clip_y_scale = 2.0f / st->state.fb_height;
|
|
const unsigned num_verts = count * 4;
|
|
const unsigned num_vert_bytes = num_verts * sizeof(struct st_util_vertex);
|
|
struct st_util_vertex *verts;
|
|
struct pipe_vertex_buffer vb = {0};
|
|
unsigned i;
|
|
|
|
if (!st->bitmap.tex_format) {
|
|
init_bitmap_state(st);
|
|
}
|
|
|
|
st_flush_bitmap_cache(st);
|
|
|
|
st_validate_state(st, ST_PIPELINE_META);
|
|
st_invalidate_readpix_cache(st);
|
|
|
|
sv = st_create_texture_sampler_view(pipe, stObj->pt);
|
|
if (!sv) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCallLists(bitmap text)");
|
|
return;
|
|
}
|
|
|
|
setup_render_state(ctx, sv, color, true);
|
|
|
|
vb.stride = sizeof(struct st_util_vertex);
|
|
|
|
u_upload_alloc(pipe->stream_uploader, 0, num_vert_bytes, 4,
|
|
&vb.buffer_offset, &vb.buffer.resource, (void **) &verts);
|
|
|
|
if (unlikely(!verts)) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCallLists(bitmap text)");
|
|
goto out;
|
|
}
|
|
|
|
/* build quads vertex data */
|
|
for (i = 0; i < count; i++) {
|
|
const GLfloat epsilon = 0.0001F;
|
|
const struct gl_bitmap_glyph *g = &atlas->glyphs[ids[i]];
|
|
const float xmove = g->xmove, ymove = g->ymove;
|
|
const float xorig = g->xorig, yorig = g->yorig;
|
|
const float s0 = g->x, t0 = g->y;
|
|
const float s1 = s0 + g->w, t1 = t0 + g->h;
|
|
const float x0 = util_ifloor(ctx->Current.RasterPos[0] - xorig + epsilon);
|
|
const float y0 = util_ifloor(ctx->Current.RasterPos[1] - yorig + epsilon);
|
|
const float x1 = x0 + g->w, y1 = y0 + g->h;
|
|
const float clip_x0 = x0 * clip_x_scale - 1.0f;
|
|
const float clip_y0 = y0 * clip_y_scale - 1.0f;
|
|
const float clip_x1 = x1 * clip_x_scale - 1.0f;
|
|
const float clip_y1 = y1 * clip_y_scale - 1.0f;
|
|
|
|
/* lower-left corner */
|
|
verts->x = clip_x0;
|
|
verts->y = clip_y0;
|
|
verts->z = z;
|
|
verts->r = color[0];
|
|
verts->g = color[1];
|
|
verts->b = color[2];
|
|
verts->a = color[3];
|
|
verts->s = s0;
|
|
verts->t = t0;
|
|
verts++;
|
|
|
|
/* lower-right corner */
|
|
verts->x = clip_x1;
|
|
verts->y = clip_y0;
|
|
verts->z = z;
|
|
verts->r = color[0];
|
|
verts->g = color[1];
|
|
verts->b = color[2];
|
|
verts->a = color[3];
|
|
verts->s = s1;
|
|
verts->t = t0;
|
|
verts++;
|
|
|
|
/* upper-right corner */
|
|
verts->x = clip_x1;
|
|
verts->y = clip_y1;
|
|
verts->z = z;
|
|
verts->r = color[0];
|
|
verts->g = color[1];
|
|
verts->b = color[2];
|
|
verts->a = color[3];
|
|
verts->s = s1;
|
|
verts->t = t1;
|
|
verts++;
|
|
|
|
/* upper-left corner */
|
|
verts->x = clip_x0;
|
|
verts->y = clip_y1;
|
|
verts->z = z;
|
|
verts->r = color[0];
|
|
verts->g = color[1];
|
|
verts->b = color[2];
|
|
verts->a = color[3];
|
|
verts->s = s0;
|
|
verts->t = t1;
|
|
verts++;
|
|
|
|
/* Update the raster position */
|
|
ctx->Current.RasterPos[0] += xmove;
|
|
ctx->Current.RasterPos[1] += ymove;
|
|
ctx->PopAttribState |= GL_CURRENT_BIT;
|
|
}
|
|
|
|
u_upload_unmap(pipe->stream_uploader);
|
|
|
|
cso_set_vertex_buffers(st->cso_context, 0, 1, 0, false, &vb);
|
|
st->last_num_vbuffers = MAX2(st->last_num_vbuffers, 1);
|
|
|
|
cso_draw_arrays(st->cso_context, PIPE_PRIM_QUADS, 0, num_verts);
|
|
|
|
out:
|
|
restore_render_state(ctx);
|
|
|
|
pipe_resource_reference(&vb.buffer.resource, NULL);
|
|
|
|
/* We uploaded modified constants, need to invalidate them. */
|
|
st->dirty |= ST_NEW_FS_CONSTANTS;
|
|
}
|
|
|
|
/** Per-context tear-down */
|
|
void
|
|
st_destroy_bitmap(struct st_context *st)
|
|
{
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct st_bitmap_cache *cache = &st->bitmap.cache;
|
|
|
|
if (cache->trans && cache->buffer) {
|
|
pipe_texture_unmap(pipe, cache->trans);
|
|
}
|
|
pipe_resource_reference(&st->bitmap.cache.texture, NULL);
|
|
}
|