1251 lines
45 KiB
C
1251 lines
45 KiB
C
/**************************************************************************
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*
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* Copyright 2009 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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* @file
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* Texture sampling -- SoA.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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* @author Brian Paul <brianp@vmware.com>
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*/
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#include "pipe/p_defines.h"
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#include "pipe/p_state.h"
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#include "util/u_debug.h"
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#include "util/u_dump.h"
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#include "util/u_memory.h"
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#include "util/u_math.h"
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#include "util/u_format.h"
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#include "lp_bld_debug.h"
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#include "lp_bld_type.h"
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#include "lp_bld_const.h"
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#include "lp_bld_conv.h"
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#include "lp_bld_arit.h"
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#include "lp_bld_bitarit.h"
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#include "lp_bld_logic.h"
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#include "lp_bld_printf.h"
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#include "lp_bld_swizzle.h"
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#include "lp_bld_flow.h"
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#include "lp_bld_gather.h"
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#include "lp_bld_format.h"
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#include "lp_bld_sample.h"
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#include "lp_bld_sample_aos.h"
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#include "lp_bld_struct.h"
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#include "lp_bld_quad.h"
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/**
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* Generate code to fetch a texel from a texture at int coords (x, y, z).
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* The computation depends on whether the texture is 1D, 2D or 3D.
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* The result, texel, will be float vectors:
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* texel[0] = red values
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* texel[1] = green values
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* texel[2] = blue values
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* texel[3] = alpha values
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*/
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static void
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lp_build_sample_texel_soa(struct lp_build_sample_context *bld,
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unsigned unit,
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LLVMValueRef width,
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LLVMValueRef height,
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LLVMValueRef depth,
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LLVMValueRef x,
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LLVMValueRef y,
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LLVMValueRef z,
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LLVMValueRef y_stride,
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LLVMValueRef z_stride,
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LLVMValueRef data_ptr,
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LLVMValueRef texel_out[4])
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{
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const struct lp_sampler_static_state *static_state = bld->static_state;
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const unsigned dims = bld->dims;
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struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
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LLVMValueRef offset;
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LLVMValueRef i, j;
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LLVMValueRef use_border = NULL;
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/* use_border = x < 0 || x >= width || y < 0 || y >= height */
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if (lp_sampler_wrap_mode_uses_border_color(static_state->wrap_s,
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static_state->min_img_filter,
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static_state->mag_img_filter)) {
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LLVMValueRef b1, b2;
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b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero);
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b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width);
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use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
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}
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if (dims >= 2 &&
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lp_sampler_wrap_mode_uses_border_color(static_state->wrap_t,
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static_state->min_img_filter,
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static_state->mag_img_filter)) {
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LLVMValueRef b1, b2;
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b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero);
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b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height);
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if (use_border) {
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use_border = LLVMBuildOr(bld->builder, use_border, b1, "ub_or_b1");
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use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2");
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}
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else {
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use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
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}
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}
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if (dims == 3 &&
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lp_sampler_wrap_mode_uses_border_color(static_state->wrap_r,
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static_state->min_img_filter,
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static_state->mag_img_filter)) {
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LLVMValueRef b1, b2;
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b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero);
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b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth);
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if (use_border) {
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use_border = LLVMBuildOr(bld->builder, use_border, b1, "ub_or_b1");
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use_border = LLVMBuildOr(bld->builder, use_border, b2, "ub_or_b2");
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}
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else {
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use_border = LLVMBuildOr(bld->builder, b1, b2, "b1_or_b2");
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}
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}
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/* convert x,y,z coords to linear offset from start of texture, in bytes */
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lp_build_sample_offset(&bld->uint_coord_bld,
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bld->format_desc,
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x, y, z, y_stride, z_stride,
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&offset, &i, &j);
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if (use_border) {
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/* If we can sample the border color, it means that texcoords may
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* lie outside the bounds of the texture image. We need to do
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* something to prevent reading out of bounds and causing a segfault.
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*
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* Simply AND the texture coords with !use_border. This will cause
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* coords which are out of bounds to become zero. Zero's guaranteed
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* to be inside the texture image.
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*/
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offset = lp_build_andnot(&bld->uint_coord_bld, offset, use_border);
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}
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lp_build_fetch_rgba_soa(bld->builder,
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bld->format_desc,
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bld->texel_type,
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data_ptr, offset,
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i, j,
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texel_out);
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/*
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* Note: if we find an app which frequently samples the texture border
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* we might want to implement a true conditional here to avoid sampling
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* the texture whenever possible (since that's quite a bit of code).
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* Ex:
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* if (use_border) {
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* texel = border_color;
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* }
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* else {
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* texel = sample_texture(coord);
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* }
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* As it is now, we always sample the texture, then selectively replace
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* the texel color results with the border color.
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*/
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if (use_border) {
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/* select texel color or border color depending on use_border */
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LLVMValueRef border_color_ptr =
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bld->dynamic_state->border_color(bld->dynamic_state,
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bld->builder, unit);
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int chan;
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for (chan = 0; chan < 4; chan++) {
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LLVMValueRef border_chan =
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lp_build_array_get(bld->builder, border_color_ptr,
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lp_build_const_int32(chan));
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LLVMValueRef border_chan_vec =
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lp_build_broadcast_scalar(&bld->float_vec_bld, border_chan);
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texel_out[chan] = lp_build_select(&bld->texel_bld, use_border,
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border_chan_vec, texel_out[chan]);
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}
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}
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apply_sampler_swizzle(bld, texel_out);
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}
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/**
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* Helper to compute the mirror function for the PIPE_WRAP_MIRROR modes.
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*/
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static LLVMValueRef
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lp_build_coord_mirror(struct lp_build_sample_context *bld,
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LLVMValueRef coord)
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{
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struct lp_build_context *coord_bld = &bld->coord_bld;
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struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
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LLVMValueRef fract, flr, isOdd;
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/* fract = coord - floor(coord) */
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fract = lp_build_sub(coord_bld, coord, lp_build_floor(coord_bld, coord));
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/* flr = ifloor(coord); */
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flr = lp_build_ifloor(coord_bld, coord);
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/* isOdd = flr & 1 */
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isOdd = LLVMBuildAnd(bld->builder, flr, int_coord_bld->one, "");
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/* make coord positive or negative depending on isOdd */
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coord = lp_build_set_sign(coord_bld, fract, isOdd);
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/* convert isOdd to float */
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isOdd = lp_build_int_to_float(coord_bld, isOdd);
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/* add isOdd to coord */
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coord = lp_build_add(coord_bld, coord, isOdd);
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return coord;
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}
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/**
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* Build LLVM code for texture wrap mode for linear filtering.
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* \param x0_out returns first integer texcoord
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* \param x1_out returns second integer texcoord
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* \param weight_out returns linear interpolation weight
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*/
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static void
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lp_build_sample_wrap_linear(struct lp_build_sample_context *bld,
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LLVMValueRef coord,
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LLVMValueRef length,
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boolean is_pot,
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unsigned wrap_mode,
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LLVMValueRef *x0_out,
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LLVMValueRef *x1_out,
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LLVMValueRef *weight_out)
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{
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struct lp_build_context *coord_bld = &bld->coord_bld;
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struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
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struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
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LLVMValueRef half = lp_build_const_vec(coord_bld->type, 0.5);
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LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
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LLVMValueRef length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
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LLVMValueRef coord0, coord1, weight;
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switch(wrap_mode) {
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case PIPE_TEX_WRAP_REPEAT:
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/* mul by size and subtract 0.5 */
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coord = lp_build_mul(coord_bld, coord, length_f);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(uint_coord_bld, coord0, uint_coord_bld->one);
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/* repeat wrap */
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if (is_pot) {
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coord0 = LLVMBuildAnd(bld->builder, coord0, length_minus_one, "");
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coord1 = LLVMBuildAnd(bld->builder, coord1, length_minus_one, "");
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}
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else {
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/* Add a bias to the texcoord to handle negative coords */
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LLVMValueRef bias = lp_build_mul_imm(uint_coord_bld, length, 1024);
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coord0 = LLVMBuildAdd(bld->builder, coord0, bias, "");
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coord1 = LLVMBuildAdd(bld->builder, coord1, bias, "");
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coord0 = LLVMBuildURem(bld->builder, coord0, length, "");
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coord1 = LLVMBuildURem(bld->builder, coord1, length, "");
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}
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break;
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case PIPE_TEX_WRAP_CLAMP:
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if (bld->static_state->normalized_coords) {
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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}
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/* clamp to [0, length] */
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coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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break;
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case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
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if (bld->static_state->normalized_coords) {
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/* clamp to [0,1] */
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coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, coord_bld->one);
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/* mul by tex size and subtract 0.5 */
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coord = lp_build_mul(coord_bld, coord, length_f);
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coord = lp_build_sub(coord_bld, coord, half);
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}
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else {
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LLVMValueRef min, max;
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/* clamp to [0.5, length - 0.5] */
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min = half;
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max = lp_build_sub(coord_bld, length_f, min);
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coord = lp_build_clamp(coord_bld, coord, min, max);
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}
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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/* coord0 = max(coord0, 0) */
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coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
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/* coord1 = min(coord1, length-1) */
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coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
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break;
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case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
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{
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LLVMValueRef min, max;
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if (bld->static_state->normalized_coords) {
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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}
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/* clamp to [-0.5, length + 0.5] */
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min = lp_build_const_vec(coord_bld->type, -0.5F);
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max = lp_build_sub(coord_bld, length_f, min);
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coord = lp_build_clamp(coord_bld, coord, min, max);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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}
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break;
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case PIPE_TEX_WRAP_MIRROR_REPEAT:
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/* compute mirror function */
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coord = lp_build_coord_mirror(bld, coord);
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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/* coord0 = max(coord0, 0) */
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coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero);
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/* coord1 = min(coord1, length-1) */
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coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one);
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break;
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case PIPE_TEX_WRAP_MIRROR_CLAMP:
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coord = lp_build_abs(coord_bld, coord);
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if (bld->static_state->normalized_coords) {
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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}
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/* clamp to [0, length] */
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coord = lp_build_min(coord_bld, coord, length_f);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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break;
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case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
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{
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LLVMValueRef min, max;
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coord = lp_build_abs(coord_bld, coord);
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if (bld->static_state->normalized_coords) {
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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}
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/* clamp to [0.5, length - 0.5] */
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min = half;
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max = lp_build_sub(coord_bld, length_f, min);
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coord = lp_build_clamp(coord_bld, coord, min, max);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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}
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break;
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case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
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{
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LLVMValueRef min, max;
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coord = lp_build_abs(coord_bld, coord);
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if (bld->static_state->normalized_coords) {
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/* scale coord to length */
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coord = lp_build_mul(coord_bld, coord, length_f);
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}
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/* clamp to [-0.5, length + 0.5] */
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min = lp_build_negate(coord_bld, half);
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max = lp_build_sub(coord_bld, length_f, min);
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coord = lp_build_clamp(coord_bld, coord, min, max);
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coord = lp_build_sub(coord_bld, coord, half);
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/* convert to int, compute lerp weight */
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lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight);
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coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one);
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}
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break;
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default:
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assert(0);
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coord0 = NULL;
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coord1 = NULL;
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weight = NULL;
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}
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*x0_out = coord0;
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*x1_out = coord1;
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*weight_out = weight;
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}
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|
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/**
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* Build LLVM code for texture wrap mode for nearest filtering.
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|
* \param coord the incoming texcoord (nominally in [0,1])
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* \param length the texture size along one dimension, as int vector
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* \param is_pot if TRUE, length is a power of two
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* \param wrap_mode one of PIPE_TEX_WRAP_x
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*/
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static LLVMValueRef
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lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld,
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LLVMValueRef coord,
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LLVMValueRef length,
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boolean is_pot,
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unsigned wrap_mode)
|
|
{
|
|
struct lp_build_context *coord_bld = &bld->coord_bld;
|
|
struct lp_build_context *int_coord_bld = &bld->int_coord_bld;
|
|
struct lp_build_context *uint_coord_bld = &bld->uint_coord_bld;
|
|
LLVMValueRef length_f = lp_build_int_to_float(coord_bld, length);
|
|
LLVMValueRef length_minus_one = lp_build_sub(uint_coord_bld, length, uint_coord_bld->one);
|
|
LLVMValueRef icoord;
|
|
|
|
switch(wrap_mode) {
|
|
case PIPE_TEX_WRAP_REPEAT:
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
if (is_pot)
|
|
icoord = LLVMBuildAnd(bld->builder, icoord, length_minus_one, "");
|
|
else {
|
|
/* Add a bias to the texcoord to handle negative coords */
|
|
LLVMValueRef bias = lp_build_mul_imm(uint_coord_bld, length, 1024);
|
|
icoord = LLVMBuildAdd(bld->builder, icoord, bias, "");
|
|
icoord = LLVMBuildURem(bld->builder, icoord, length, "");
|
|
}
|
|
break;
|
|
|
|
case PIPE_TEX_WRAP_CLAMP:
|
|
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
|
|
if (bld->static_state->normalized_coords) {
|
|
/* scale coord to length */
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
}
|
|
|
|
/* floor */
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
|
|
/* clamp to [0, length - 1]. */
|
|
icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero,
|
|
length_minus_one);
|
|
break;
|
|
|
|
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
|
|
/* Note: this is the same as CLAMP_TO_EDGE, except min = -min */
|
|
{
|
|
LLVMValueRef min, max;
|
|
|
|
if (bld->static_state->normalized_coords) {
|
|
/* scale coord to length */
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
}
|
|
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
|
|
/* clamp to [-1, length] */
|
|
min = lp_build_negate(int_coord_bld, int_coord_bld->one);
|
|
max = length;
|
|
icoord = lp_build_clamp(int_coord_bld, icoord, min, max);
|
|
}
|
|
break;
|
|
|
|
case PIPE_TEX_WRAP_MIRROR_REPEAT:
|
|
/* compute mirror function */
|
|
coord = lp_build_coord_mirror(bld, coord);
|
|
|
|
/* scale coord to length */
|
|
assert(bld->static_state->normalized_coords);
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
|
|
/* clamp to [0, length - 1] */
|
|
icoord = lp_build_min(int_coord_bld, icoord, length_minus_one);
|
|
break;
|
|
|
|
case PIPE_TEX_WRAP_MIRROR_CLAMP:
|
|
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
|
|
coord = lp_build_abs(coord_bld, coord);
|
|
|
|
if (bld->static_state->normalized_coords) {
|
|
/* scale coord to length */
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
}
|
|
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
|
|
/* clamp to [0, length - 1] */
|
|
icoord = lp_build_min(int_coord_bld, icoord, length_minus_one);
|
|
break;
|
|
|
|
case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
|
|
coord = lp_build_abs(coord_bld, coord);
|
|
|
|
if (bld->static_state->normalized_coords) {
|
|
/* scale coord to length */
|
|
coord = lp_build_mul(coord_bld, coord, length_f);
|
|
}
|
|
|
|
icoord = lp_build_ifloor(coord_bld, coord);
|
|
|
|
/* clamp to [0, length] */
|
|
icoord = lp_build_min(int_coord_bld, icoord, length);
|
|
break;
|
|
|
|
default:
|
|
assert(0);
|
|
icoord = NULL;
|
|
}
|
|
|
|
return icoord;
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate code to sample a mipmap level with nearest filtering.
|
|
* If sampling a cube texture, r = cube face in [0,5].
|
|
*/
|
|
static void
|
|
lp_build_sample_image_nearest(struct lp_build_sample_context *bld,
|
|
unsigned unit,
|
|
LLVMValueRef width_vec,
|
|
LLVMValueRef height_vec,
|
|
LLVMValueRef depth_vec,
|
|
LLVMValueRef row_stride_vec,
|
|
LLVMValueRef img_stride_vec,
|
|
LLVMValueRef data_ptr,
|
|
LLVMValueRef s,
|
|
LLVMValueRef t,
|
|
LLVMValueRef r,
|
|
LLVMValueRef colors_out[4])
|
|
{
|
|
const unsigned dims = bld->dims;
|
|
LLVMValueRef x, y, z;
|
|
|
|
/*
|
|
* Compute integer texcoords.
|
|
*/
|
|
x = lp_build_sample_wrap_nearest(bld, s, width_vec,
|
|
bld->static_state->pot_width,
|
|
bld->static_state->wrap_s);
|
|
lp_build_name(x, "tex.x.wrapped");
|
|
|
|
if (dims >= 2) {
|
|
y = lp_build_sample_wrap_nearest(bld, t, height_vec,
|
|
bld->static_state->pot_height,
|
|
bld->static_state->wrap_t);
|
|
lp_build_name(y, "tex.y.wrapped");
|
|
|
|
if (dims == 3) {
|
|
z = lp_build_sample_wrap_nearest(bld, r, depth_vec,
|
|
bld->static_state->pot_depth,
|
|
bld->static_state->wrap_r);
|
|
lp_build_name(z, "tex.z.wrapped");
|
|
}
|
|
else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
|
|
z = r;
|
|
}
|
|
else {
|
|
z = NULL;
|
|
}
|
|
}
|
|
else {
|
|
y = z = NULL;
|
|
}
|
|
|
|
/*
|
|
* Get texture colors.
|
|
*/
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x, y, z,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, colors_out);
|
|
}
|
|
|
|
|
|
/**
|
|
* Generate code to sample a mipmap level with linear filtering.
|
|
* If sampling a cube texture, r = cube face in [0,5].
|
|
*/
|
|
static void
|
|
lp_build_sample_image_linear(struct lp_build_sample_context *bld,
|
|
unsigned unit,
|
|
LLVMValueRef width_vec,
|
|
LLVMValueRef height_vec,
|
|
LLVMValueRef depth_vec,
|
|
LLVMValueRef row_stride_vec,
|
|
LLVMValueRef img_stride_vec,
|
|
LLVMValueRef data_ptr,
|
|
LLVMValueRef s,
|
|
LLVMValueRef t,
|
|
LLVMValueRef r,
|
|
LLVMValueRef colors_out[4])
|
|
{
|
|
const unsigned dims = bld->dims;
|
|
LLVMValueRef x0, y0, z0, x1, y1, z1;
|
|
LLVMValueRef s_fpart, t_fpart, r_fpart;
|
|
LLVMValueRef neighbors[2][2][4];
|
|
int chan;
|
|
|
|
/*
|
|
* Compute integer texcoords.
|
|
*/
|
|
lp_build_sample_wrap_linear(bld, s, width_vec,
|
|
bld->static_state->pot_width,
|
|
bld->static_state->wrap_s,
|
|
&x0, &x1, &s_fpart);
|
|
lp_build_name(x0, "tex.x0.wrapped");
|
|
lp_build_name(x1, "tex.x1.wrapped");
|
|
|
|
if (dims >= 2) {
|
|
lp_build_sample_wrap_linear(bld, t, height_vec,
|
|
bld->static_state->pot_height,
|
|
bld->static_state->wrap_t,
|
|
&y0, &y1, &t_fpart);
|
|
lp_build_name(y0, "tex.y0.wrapped");
|
|
lp_build_name(y1, "tex.y1.wrapped");
|
|
|
|
if (dims == 3) {
|
|
lp_build_sample_wrap_linear(bld, r, depth_vec,
|
|
bld->static_state->pot_depth,
|
|
bld->static_state->wrap_r,
|
|
&z0, &z1, &r_fpart);
|
|
lp_build_name(z0, "tex.z0.wrapped");
|
|
lp_build_name(z1, "tex.z1.wrapped");
|
|
}
|
|
else if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
|
|
z0 = z1 = r; /* cube face */
|
|
r_fpart = NULL;
|
|
}
|
|
else {
|
|
z0 = z1 = NULL;
|
|
r_fpart = NULL;
|
|
}
|
|
}
|
|
else {
|
|
y0 = y1 = t_fpart = NULL;
|
|
z0 = z1 = r_fpart = NULL;
|
|
}
|
|
|
|
/*
|
|
* Get texture colors.
|
|
*/
|
|
/* get x0/x1 texels */
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x0, y0, z0,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors[0][0]);
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x1, y0, z0,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors[0][1]);
|
|
|
|
if (dims == 1) {
|
|
/* Interpolate two samples from 1D image to produce one color */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors_out[chan] = lp_build_lerp(&bld->texel_bld, s_fpart,
|
|
neighbors[0][0][chan],
|
|
neighbors[0][1][chan]);
|
|
}
|
|
}
|
|
else {
|
|
/* 2D/3D texture */
|
|
LLVMValueRef colors0[4];
|
|
|
|
/* get x0/x1 texels at y1 */
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x0, y1, z0,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors[1][0]);
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x1, y1, z0,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors[1][1]);
|
|
|
|
/* Bilinear interpolate the four samples from the 2D image / 3D slice */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors0[chan] = lp_build_lerp_2d(&bld->texel_bld,
|
|
s_fpart, t_fpart,
|
|
neighbors[0][0][chan],
|
|
neighbors[0][1][chan],
|
|
neighbors[1][0][chan],
|
|
neighbors[1][1][chan]);
|
|
}
|
|
|
|
if (dims == 3) {
|
|
LLVMValueRef neighbors1[2][2][4];
|
|
LLVMValueRef colors1[4];
|
|
|
|
/* get x0/x1/y0/y1 texels at z1 */
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x0, y0, z1,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors1[0][0]);
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x1, y0, z1,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors1[0][1]);
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x0, y1, z1,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors1[1][0]);
|
|
lp_build_sample_texel_soa(bld, unit,
|
|
width_vec, height_vec, depth_vec,
|
|
x1, y1, z1,
|
|
row_stride_vec, img_stride_vec,
|
|
data_ptr, neighbors1[1][1]);
|
|
|
|
/* Bilinear interpolate the four samples from the second Z slice */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors1[chan] = lp_build_lerp_2d(&bld->texel_bld,
|
|
s_fpart, t_fpart,
|
|
neighbors1[0][0][chan],
|
|
neighbors1[0][1][chan],
|
|
neighbors1[1][0][chan],
|
|
neighbors1[1][1][chan]);
|
|
}
|
|
|
|
/* Linearly interpolate the two samples from the two 3D slices */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors_out[chan] = lp_build_lerp(&bld->texel_bld,
|
|
r_fpart,
|
|
colors0[chan], colors1[chan]);
|
|
}
|
|
}
|
|
else {
|
|
/* 2D tex */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors_out[chan] = colors0[chan];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Sample the texture/mipmap using given image filter and mip filter.
|
|
* data0_ptr and data1_ptr point to the two mipmap levels to sample
|
|
* from. width0/1_vec, height0/1_vec, depth0/1_vec indicate their sizes.
|
|
* If we're using nearest miplevel sampling the '1' values will be null/unused.
|
|
*/
|
|
static void
|
|
lp_build_sample_mipmap(struct lp_build_sample_context *bld,
|
|
unsigned unit,
|
|
unsigned img_filter,
|
|
unsigned mip_filter,
|
|
LLVMValueRef s,
|
|
LLVMValueRef t,
|
|
LLVMValueRef r,
|
|
LLVMValueRef ilevel0,
|
|
LLVMValueRef ilevel1,
|
|
LLVMValueRef lod_fpart,
|
|
LLVMValueRef *colors_out)
|
|
{
|
|
LLVMBuilderRef builder = bld->builder;
|
|
LLVMValueRef width0_vec;
|
|
LLVMValueRef width1_vec;
|
|
LLVMValueRef height0_vec;
|
|
LLVMValueRef height1_vec;
|
|
LLVMValueRef depth0_vec;
|
|
LLVMValueRef depth1_vec;
|
|
LLVMValueRef row_stride0_vec;
|
|
LLVMValueRef row_stride1_vec;
|
|
LLVMValueRef img_stride0_vec;
|
|
LLVMValueRef img_stride1_vec;
|
|
LLVMValueRef data_ptr0;
|
|
LLVMValueRef data_ptr1;
|
|
LLVMValueRef colors0[4], colors1[4];
|
|
unsigned chan;
|
|
|
|
/* sample the first mipmap level */
|
|
lp_build_mipmap_level_sizes(bld, ilevel0,
|
|
&width0_vec, &height0_vec, &depth0_vec,
|
|
&row_stride0_vec, &img_stride0_vec);
|
|
data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0);
|
|
if (img_filter == PIPE_TEX_FILTER_NEAREST) {
|
|
lp_build_sample_image_nearest(bld, unit,
|
|
width0_vec, height0_vec, depth0_vec,
|
|
row_stride0_vec, img_stride0_vec,
|
|
data_ptr0, s, t, r,
|
|
colors0);
|
|
}
|
|
else {
|
|
assert(img_filter == PIPE_TEX_FILTER_LINEAR);
|
|
lp_build_sample_image_linear(bld, unit,
|
|
width0_vec, height0_vec, depth0_vec,
|
|
row_stride0_vec, img_stride0_vec,
|
|
data_ptr0, s, t, r,
|
|
colors0);
|
|
}
|
|
|
|
/* Store the first level's colors in the output variables */
|
|
for (chan = 0; chan < 4; chan++) {
|
|
LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
|
|
}
|
|
|
|
if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) {
|
|
struct lp_build_flow_context *flow_ctx;
|
|
struct lp_build_if_state if_ctx;
|
|
LLVMValueRef need_lerp;
|
|
|
|
flow_ctx = lp_build_flow_create(builder);
|
|
|
|
/* need_lerp = lod_fpart > 0 */
|
|
need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT,
|
|
lod_fpart,
|
|
bld->float_bld.zero,
|
|
"need_lerp");
|
|
|
|
lp_build_if(&if_ctx, flow_ctx, builder, need_lerp);
|
|
{
|
|
/* sample the second mipmap level */
|
|
lp_build_mipmap_level_sizes(bld, ilevel1,
|
|
&width1_vec, &height1_vec, &depth1_vec,
|
|
&row_stride1_vec, &img_stride1_vec);
|
|
data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1);
|
|
if (img_filter == PIPE_TEX_FILTER_NEAREST) {
|
|
lp_build_sample_image_nearest(bld, unit,
|
|
width1_vec, height1_vec, depth1_vec,
|
|
row_stride1_vec, img_stride1_vec,
|
|
data_ptr1, s, t, r,
|
|
colors1);
|
|
}
|
|
else {
|
|
lp_build_sample_image_linear(bld, unit,
|
|
width1_vec, height1_vec, depth1_vec,
|
|
row_stride1_vec, img_stride1_vec,
|
|
data_ptr1, s, t, r,
|
|
colors1);
|
|
}
|
|
|
|
/* interpolate samples from the two mipmap levels */
|
|
|
|
lod_fpart = lp_build_broadcast_scalar(&bld->texel_bld, lod_fpart);
|
|
|
|
for (chan = 0; chan < 4; chan++) {
|
|
colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart,
|
|
colors0[chan], colors1[chan]);
|
|
LLVMBuildStore(builder, colors0[chan], colors_out[chan]);
|
|
}
|
|
}
|
|
lp_build_endif(&if_ctx);
|
|
|
|
lp_build_flow_destroy(flow_ctx);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* General texture sampling codegen.
|
|
* This function handles texture sampling for all texture targets (1D,
|
|
* 2D, 3D, cube) and all filtering modes.
|
|
*/
|
|
static void
|
|
lp_build_sample_general(struct lp_build_sample_context *bld,
|
|
unsigned unit,
|
|
LLVMValueRef s,
|
|
LLVMValueRef t,
|
|
LLVMValueRef r,
|
|
const LLVMValueRef *ddx,
|
|
const LLVMValueRef *ddy,
|
|
LLVMValueRef lod_bias, /* optional */
|
|
LLVMValueRef explicit_lod, /* optional */
|
|
LLVMValueRef *colors_out)
|
|
{
|
|
struct lp_build_context *int_bld = &bld->int_bld;
|
|
LLVMBuilderRef builder = bld->builder;
|
|
const unsigned mip_filter = bld->static_state->min_mip_filter;
|
|
const unsigned min_filter = bld->static_state->min_img_filter;
|
|
const unsigned mag_filter = bld->static_state->mag_img_filter;
|
|
LLVMValueRef lod_ipart = NULL, lod_fpart = NULL;
|
|
LLVMValueRef ilevel0, ilevel1 = NULL;
|
|
LLVMValueRef face_ddx[4], face_ddy[4];
|
|
LLVMValueRef texels[4];
|
|
LLVMTypeRef i32t = LLVMInt32Type();
|
|
LLVMValueRef i32t_zero = LLVMConstInt(i32t, 0, 0);
|
|
unsigned chan;
|
|
|
|
/*
|
|
printf("%s mip %d min %d mag %d\n", __FUNCTION__,
|
|
mip_filter, min_filter, mag_filter);
|
|
*/
|
|
|
|
/*
|
|
* Choose cube face, recompute texcoords and derivatives for the chosen face.
|
|
*/
|
|
if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
|
|
LLVMValueRef face, face_s, face_t;
|
|
lp_build_cube_lookup(bld, s, t, r, &face, &face_s, &face_t);
|
|
s = face_s; /* vec */
|
|
t = face_t; /* vec */
|
|
/* use 'r' to indicate cube face */
|
|
r = lp_build_broadcast_scalar(&bld->int_coord_bld, face); /* vec */
|
|
|
|
/* recompute ddx, ddy using the new (s,t) face texcoords */
|
|
face_ddx[0] = lp_build_ddx(&bld->coord_bld, s);
|
|
face_ddx[1] = lp_build_ddx(&bld->coord_bld, t);
|
|
face_ddx[2] = NULL;
|
|
face_ddx[3] = NULL;
|
|
face_ddy[0] = lp_build_ddy(&bld->coord_bld, s);
|
|
face_ddy[1] = lp_build_ddy(&bld->coord_bld, t);
|
|
face_ddy[2] = NULL;
|
|
face_ddy[3] = NULL;
|
|
ddx = face_ddx;
|
|
ddy = face_ddy;
|
|
}
|
|
|
|
/*
|
|
* Compute the level of detail (float).
|
|
*/
|
|
if (min_filter != mag_filter ||
|
|
mip_filter != PIPE_TEX_MIPFILTER_NONE) {
|
|
/* Need to compute lod either to choose mipmap levels or to
|
|
* distinguish between minification/magnification with one mipmap level.
|
|
*/
|
|
lp_build_lod_selector(bld, unit, ddx, ddy,
|
|
lod_bias, explicit_lod,
|
|
mip_filter,
|
|
&lod_ipart, &lod_fpart);
|
|
} else {
|
|
lod_ipart = i32t_zero;
|
|
}
|
|
|
|
/*
|
|
* Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1
|
|
*/
|
|
switch (mip_filter) {
|
|
default:
|
|
assert(0 && "bad mip_filter value in lp_build_sample_soa()");
|
|
/* fall-through */
|
|
case PIPE_TEX_MIPFILTER_NONE:
|
|
/* always use mip level 0 */
|
|
if (bld->static_state->target == PIPE_TEXTURE_CUBE) {
|
|
/* XXX this is a work-around for an apparent bug in LLVM 2.7.
|
|
* We should be able to set ilevel0 = const(0) but that causes
|
|
* bad x86 code to be emitted.
|
|
*/
|
|
assert(lod_ipart);
|
|
lp_build_nearest_mip_level(bld, unit, lod_ipart, &ilevel0);
|
|
}
|
|
else {
|
|
ilevel0 = i32t_zero;
|
|
}
|
|
break;
|
|
case PIPE_TEX_MIPFILTER_NEAREST:
|
|
assert(lod_ipart);
|
|
lp_build_nearest_mip_level(bld, unit, lod_ipart, &ilevel0);
|
|
break;
|
|
case PIPE_TEX_MIPFILTER_LINEAR:
|
|
assert(lod_ipart);
|
|
assert(lod_fpart);
|
|
lp_build_linear_mip_levels(bld, unit,
|
|
lod_ipart, &lod_fpart,
|
|
&ilevel0, &ilevel1);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get/interpolate texture colors.
|
|
*/
|
|
|
|
for (chan = 0; chan < 4; ++chan) {
|
|
texels[chan] = lp_build_alloca(builder, bld->texel_bld.vec_type, "");
|
|
lp_build_name(texels[chan], "sampler%u_texel_%c_var", unit, "xyzw"[chan]);
|
|
}
|
|
|
|
if (min_filter == mag_filter) {
|
|
/* no need to distinquish between minification and magnification */
|
|
lp_build_sample_mipmap(bld, unit,
|
|
min_filter, mip_filter,
|
|
s, t, r,
|
|
ilevel0, ilevel1, lod_fpart,
|
|
texels);
|
|
}
|
|
else {
|
|
/* Emit conditional to choose min image filter or mag image filter
|
|
* depending on the lod being > 0 or <= 0, respectively.
|
|
*/
|
|
struct lp_build_flow_context *flow_ctx;
|
|
struct lp_build_if_state if_ctx;
|
|
LLVMValueRef minify;
|
|
|
|
flow_ctx = lp_build_flow_create(builder);
|
|
|
|
/* minify = lod >= 0.0 */
|
|
minify = LLVMBuildICmp(builder, LLVMIntSGE,
|
|
lod_ipart, int_bld->zero, "");
|
|
|
|
lp_build_if(&if_ctx, flow_ctx, builder, minify);
|
|
{
|
|
/* Use the minification filter */
|
|
lp_build_sample_mipmap(bld, unit,
|
|
min_filter, mip_filter,
|
|
s, t, r,
|
|
ilevel0, ilevel1, lod_fpart,
|
|
texels);
|
|
}
|
|
lp_build_else(&if_ctx);
|
|
{
|
|
/* Use the magnification filter */
|
|
lp_build_sample_mipmap(bld, unit,
|
|
mag_filter, PIPE_TEX_MIPFILTER_NONE,
|
|
s, t, r,
|
|
i32t_zero, NULL, NULL,
|
|
texels);
|
|
}
|
|
lp_build_endif(&if_ctx);
|
|
|
|
lp_build_flow_destroy(flow_ctx);
|
|
}
|
|
|
|
for (chan = 0; chan < 4; ++chan) {
|
|
colors_out[chan] = LLVMBuildLoad(builder, texels[chan], "");
|
|
lp_build_name(colors_out[chan], "sampler%u_texel_%c", unit, "xyzw"[chan]);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Do shadow test/comparison.
|
|
* \param p the texcoord Z (aka R, aka P) component
|
|
* \param texel the texel to compare against (use the X channel)
|
|
*/
|
|
static void
|
|
lp_build_sample_compare(struct lp_build_sample_context *bld,
|
|
LLVMValueRef p,
|
|
LLVMValueRef texel[4])
|
|
{
|
|
struct lp_build_context *texel_bld = &bld->texel_bld;
|
|
LLVMValueRef res;
|
|
const unsigned chan = 0;
|
|
|
|
if (bld->static_state->compare_mode == PIPE_TEX_COMPARE_NONE)
|
|
return;
|
|
|
|
/* debug code */
|
|
if (0) {
|
|
LLVMValueRef indx = lp_build_const_int32(0);
|
|
LLVMValueRef coord = LLVMBuildExtractElement(bld->builder, p, indx, "");
|
|
LLVMValueRef tex = LLVMBuildExtractElement(bld->builder,
|
|
texel[chan], indx, "");
|
|
lp_build_printf(bld->builder, "shadow compare coord %f to texture %f\n",
|
|
coord, tex);
|
|
}
|
|
|
|
/* result = (p FUNC texel) ? 1 : 0 */
|
|
res = lp_build_cmp(texel_bld, bld->static_state->compare_func,
|
|
p, texel[chan]);
|
|
res = lp_build_select(texel_bld, res, texel_bld->one, texel_bld->zero);
|
|
|
|
/* XXX returning result for default GL_DEPTH_TEXTURE_MODE = GL_LUMINANCE */
|
|
texel[0] =
|
|
texel[1] =
|
|
texel[2] = res;
|
|
texel[3] = texel_bld->one;
|
|
}
|
|
|
|
|
|
/**
|
|
* Just set texels to white instead of actually sampling the texture.
|
|
* For debugging.
|
|
*/
|
|
void
|
|
lp_build_sample_nop(struct lp_type type,
|
|
LLVMValueRef texel_out[4])
|
|
{
|
|
LLVMValueRef one = lp_build_one(type);
|
|
unsigned chan;
|
|
|
|
for (chan = 0; chan < 4; chan++) {
|
|
texel_out[chan] = one;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Build texture sampling code.
|
|
* 'texel' will return a vector of four LLVMValueRefs corresponding to
|
|
* R, G, B, A.
|
|
* \param type vector float type to use for coords, etc.
|
|
* \param ddx partial derivatives of (s,t,r,q) with respect to x
|
|
* \param ddy partial derivatives of (s,t,r,q) with respect to y
|
|
*/
|
|
void
|
|
lp_build_sample_soa(LLVMBuilderRef builder,
|
|
const struct lp_sampler_static_state *static_state,
|
|
struct lp_sampler_dynamic_state *dynamic_state,
|
|
struct lp_type type,
|
|
unsigned unit,
|
|
unsigned num_coords,
|
|
const LLVMValueRef *coords,
|
|
const LLVMValueRef ddx[4],
|
|
const LLVMValueRef ddy[4],
|
|
LLVMValueRef lod_bias, /* optional */
|
|
LLVMValueRef explicit_lod, /* optional */
|
|
LLVMValueRef texel_out[4])
|
|
{
|
|
unsigned dims = texture_dims(static_state->target);
|
|
struct lp_build_sample_context bld;
|
|
LLVMTypeRef i32t = LLVMInt32Type();
|
|
|
|
LLVMValueRef s;
|
|
LLVMValueRef t;
|
|
LLVMValueRef r;
|
|
struct lp_type float_vec_type;
|
|
|
|
if (0) {
|
|
enum pipe_format fmt = static_state->format;
|
|
debug_printf("Sample from %s\n", util_format_name(fmt));
|
|
}
|
|
|
|
assert(type.floating);
|
|
|
|
/* Setup our build context */
|
|
memset(&bld, 0, sizeof bld);
|
|
bld.builder = builder;
|
|
bld.static_state = static_state;
|
|
bld.dynamic_state = dynamic_state;
|
|
bld.format_desc = util_format_description(static_state->format);
|
|
bld.dims = dims;
|
|
|
|
bld.float_type = lp_type_float(32);
|
|
bld.int_type = lp_type_int(32);
|
|
bld.coord_type = type;
|
|
bld.uint_coord_type = lp_uint_type(type);
|
|
bld.int_coord_type = lp_int_type(type);
|
|
bld.float_size_type = lp_type_float(32);
|
|
bld.float_size_type.length = dims > 1 ? 4 : 1;
|
|
bld.int_size_type = lp_int_type(bld.float_size_type);
|
|
bld.texel_type = type;
|
|
|
|
float_vec_type = lp_type_float_vec(32);
|
|
|
|
lp_build_context_init(&bld.float_bld, builder, bld.float_type);
|
|
lp_build_context_init(&bld.float_vec_bld, builder, float_vec_type);
|
|
lp_build_context_init(&bld.int_bld, builder, bld.int_type);
|
|
lp_build_context_init(&bld.coord_bld, builder, bld.coord_type);
|
|
lp_build_context_init(&bld.uint_coord_bld, builder, bld.uint_coord_type);
|
|
lp_build_context_init(&bld.int_coord_bld, builder, bld.int_coord_type);
|
|
lp_build_context_init(&bld.int_size_bld, builder, bld.int_size_type);
|
|
lp_build_context_init(&bld.float_size_bld, builder, bld.float_size_type);
|
|
lp_build_context_init(&bld.texel_bld, builder, bld.texel_type);
|
|
|
|
/* Get the dynamic state */
|
|
bld.width = dynamic_state->width(dynamic_state, builder, unit);
|
|
bld.height = dynamic_state->height(dynamic_state, builder, unit);
|
|
bld.depth = dynamic_state->depth(dynamic_state, builder, unit);
|
|
bld.row_stride_array = dynamic_state->row_stride(dynamic_state, builder, unit);
|
|
bld.img_stride_array = dynamic_state->img_stride(dynamic_state, builder, unit);
|
|
bld.data_array = dynamic_state->data_ptr(dynamic_state, builder, unit);
|
|
/* Note that data_array is an array[level] of pointers to texture images */
|
|
|
|
s = coords[0];
|
|
t = coords[1];
|
|
r = coords[2];
|
|
|
|
/* width, height, depth as single int vector */
|
|
if (dims <= 1) {
|
|
bld.int_size = bld.width;
|
|
}
|
|
else {
|
|
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_bld.undef,
|
|
bld.width, LLVMConstInt(i32t, 0, 0), "");
|
|
if (dims >= 2) {
|
|
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
|
|
bld.height, LLVMConstInt(i32t, 1, 0), "");
|
|
if (dims >= 3) {
|
|
bld.int_size = LLVMBuildInsertElement(builder, bld.int_size,
|
|
bld.depth, LLVMConstInt(i32t, 2, 0), "");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (0) {
|
|
/* For debug: no-op texture sampling */
|
|
lp_build_sample_nop(bld.texel_type, texel_out);
|
|
}
|
|
else if (util_format_fits_8unorm(bld.format_desc) &&
|
|
lp_is_simple_wrap_mode(static_state->wrap_s) &&
|
|
lp_is_simple_wrap_mode(static_state->wrap_t)) {
|
|
/* do sampling/filtering with fixed pt arithmetic */
|
|
lp_build_sample_aos(&bld, unit, s, t, r, ddx, ddy,
|
|
lod_bias, explicit_lod,
|
|
texel_out);
|
|
}
|
|
|
|
else {
|
|
if ((gallivm_debug & GALLIVM_DEBUG_PERF) &&
|
|
util_format_fits_8unorm(bld.format_desc)) {
|
|
debug_printf("%s: using floating point linear filtering for %s\n",
|
|
__FUNCTION__, bld.format_desc->short_name);
|
|
debug_printf(" min_img %d mag_img %d mip %d wraps %d wrapt %d\n",
|
|
static_state->min_img_filter,
|
|
static_state->mag_img_filter,
|
|
static_state->min_mip_filter,
|
|
static_state->wrap_s,
|
|
static_state->wrap_t);
|
|
}
|
|
|
|
lp_build_sample_general(&bld, unit, s, t, r, ddx, ddy,
|
|
lod_bias, explicit_lod,
|
|
texel_out);
|
|
}
|
|
|
|
lp_build_sample_compare(&bld, r, texel_out);
|
|
}
|