diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c b/src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c deleted file mode 100644 index 0215bb72ac..0000000000 --- a/src/gallium/drivers/llvmpipe/lp_bld_blend_aos.c +++ /dev/null @@ -1,360 +0,0 @@ -/************************************************************************** - * - * Copyright 2009 VMware, Inc. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. - * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR - * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - **************************************************************************/ - - -/** - * @file - * Blend LLVM IR generation -- AoS layout. - * - * AoS blending is in general much slower than SoA, but there are some cases - * where it might be faster. In particular, if a pixel is rendered only once - * then the overhead of tiling and untiling will dominate over the speedup that - * SoA gives. So we might want to detect such cases and fallback to AoS in the - * future, but for now this function is here for historical/benchmarking - * purposes. - * - * Run lp_blend_test after any change to this file. - * - * @author Jose Fonseca <jfonseca@vmware.com> - */ - - -#include "pipe/p_state.h" -#include "util/u_debug.h" - -#include "lp_bld_type.h" -#include "lp_bld_const.h" -#include "lp_bld_arit.h" -#include "lp_bld_logic.h" -#include "lp_bld_swizzle.h" -#include "lp_bld_blend.h" -#include "lp_bld_debug.h" - - -/** - * We may the same values several times, so we keep them here to avoid - * recomputing them. Also reusing the values allows us to do simplifications - * that LLVM optimization passes wouldn't normally be able to do. - */ -struct lp_build_blend_aos_context -{ - struct lp_build_context base; - - LLVMValueRef src; - LLVMValueRef dst; - LLVMValueRef const_; - - LLVMValueRef inv_src; - LLVMValueRef inv_dst; - LLVMValueRef inv_const; - LLVMValueRef saturate; - - LLVMValueRef rgb_src_factor; - LLVMValueRef alpha_src_factor; - LLVMValueRef rgb_dst_factor; - LLVMValueRef alpha_dst_factor; -}; - - -static LLVMValueRef -lp_build_blend_factor_unswizzled(struct lp_build_blend_aos_context *bld, - unsigned factor, - boolean alpha) -{ - switch (factor) { - case PIPE_BLENDFACTOR_ZERO: - return bld->base.zero; - case PIPE_BLENDFACTOR_ONE: - return bld->base.one; - case PIPE_BLENDFACTOR_SRC_COLOR: - case PIPE_BLENDFACTOR_SRC_ALPHA: - return bld->src; - case PIPE_BLENDFACTOR_DST_COLOR: - case PIPE_BLENDFACTOR_DST_ALPHA: - return bld->dst; - case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: - if(alpha) - return bld->base.one; - else { - if(!bld->inv_dst) - bld->inv_dst = lp_build_comp(&bld->base, bld->dst); - if(!bld->saturate) - bld->saturate = lp_build_min(&bld->base, bld->src, bld->inv_dst); - return bld->saturate; - } - case PIPE_BLENDFACTOR_CONST_COLOR: - case PIPE_BLENDFACTOR_CONST_ALPHA: - return bld->const_; - case PIPE_BLENDFACTOR_SRC1_COLOR: - case PIPE_BLENDFACTOR_SRC1_ALPHA: - /* TODO */ - assert(0); - return bld->base.zero; - case PIPE_BLENDFACTOR_INV_SRC_COLOR: - case PIPE_BLENDFACTOR_INV_SRC_ALPHA: - if(!bld->inv_src) - bld->inv_src = lp_build_comp(&bld->base, bld->src); - return bld->inv_src; - case PIPE_BLENDFACTOR_INV_DST_COLOR: - case PIPE_BLENDFACTOR_INV_DST_ALPHA: - if(!bld->inv_dst) - bld->inv_dst = lp_build_comp(&bld->base, bld->dst); - return bld->inv_dst; - case PIPE_BLENDFACTOR_INV_CONST_COLOR: - case PIPE_BLENDFACTOR_INV_CONST_ALPHA: - if(!bld->inv_const) - bld->inv_const = lp_build_comp(&bld->base, bld->const_); - return bld->inv_const; - case PIPE_BLENDFACTOR_INV_SRC1_COLOR: - case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: - /* TODO */ - assert(0); - return bld->base.zero; - default: - assert(0); - return bld->base.zero; - } -} - - -enum lp_build_blend_swizzle { - LP_BUILD_BLEND_SWIZZLE_RGBA = 0, - LP_BUILD_BLEND_SWIZZLE_AAAA = 1 -}; - - -/** - * How should we shuffle the base factor. - */ -static enum lp_build_blend_swizzle -lp_build_blend_factor_swizzle(unsigned factor) -{ - switch (factor) { - case PIPE_BLENDFACTOR_ONE: - case PIPE_BLENDFACTOR_ZERO: - case PIPE_BLENDFACTOR_SRC_COLOR: - case PIPE_BLENDFACTOR_DST_COLOR: - case PIPE_BLENDFACTOR_CONST_COLOR: - case PIPE_BLENDFACTOR_SRC1_COLOR: - case PIPE_BLENDFACTOR_INV_SRC_COLOR: - case PIPE_BLENDFACTOR_INV_DST_COLOR: - case PIPE_BLENDFACTOR_INV_CONST_COLOR: - case PIPE_BLENDFACTOR_INV_SRC1_COLOR: - return LP_BUILD_BLEND_SWIZZLE_RGBA; - case PIPE_BLENDFACTOR_SRC_ALPHA: - case PIPE_BLENDFACTOR_DST_ALPHA: - case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE: - case PIPE_BLENDFACTOR_SRC1_ALPHA: - case PIPE_BLENDFACTOR_CONST_ALPHA: - case PIPE_BLENDFACTOR_INV_SRC_ALPHA: - case PIPE_BLENDFACTOR_INV_DST_ALPHA: - case PIPE_BLENDFACTOR_INV_CONST_ALPHA: - case PIPE_BLENDFACTOR_INV_SRC1_ALPHA: - return LP_BUILD_BLEND_SWIZZLE_AAAA; - default: - assert(0); - return LP_BUILD_BLEND_SWIZZLE_RGBA; - } -} - - -static LLVMValueRef -lp_build_blend_swizzle(struct lp_build_blend_aos_context *bld, - LLVMValueRef rgb, - LLVMValueRef alpha, - enum lp_build_blend_swizzle rgb_swizzle, - unsigned alpha_swizzle) -{ - if(rgb == alpha) { - if(rgb_swizzle == LP_BUILD_BLEND_SWIZZLE_RGBA) - return rgb; - if(rgb_swizzle == LP_BUILD_BLEND_SWIZZLE_AAAA) - return lp_build_broadcast_aos(&bld->base, rgb, alpha_swizzle); - } - else { - if(rgb_swizzle == LP_BUILD_BLEND_SWIZZLE_RGBA) { - boolean cond[4] = {0, 0, 0, 0}; - cond[alpha_swizzle] = 1; - return lp_build_select_aos(&bld->base, alpha, rgb, cond); - } - if(rgb_swizzle == LP_BUILD_BLEND_SWIZZLE_AAAA) { - unsigned char swizzle[4]; - swizzle[0] = alpha_swizzle; - swizzle[1] = alpha_swizzle; - swizzle[2] = alpha_swizzle; - swizzle[3] = alpha_swizzle; - swizzle[alpha_swizzle] += 4; - return lp_build_swizzle2_aos(&bld->base, rgb, alpha, swizzle); - } - } - assert(0); - return bld->base.undef; -} - - -/** - * @sa http://www.opengl.org/sdk/docs/man/xhtml/glBlendFuncSeparate.xml - */ -static LLVMValueRef -lp_build_blend_factor(struct lp_build_blend_aos_context *bld, - LLVMValueRef factor1, - unsigned rgb_factor, - unsigned alpha_factor, - unsigned alpha_swizzle) -{ - LLVMValueRef rgb_factor_; - LLVMValueRef alpha_factor_; - LLVMValueRef factor2; - enum lp_build_blend_swizzle rgb_swizzle; - - rgb_factor_ = lp_build_blend_factor_unswizzled(bld, rgb_factor, FALSE); - alpha_factor_ = lp_build_blend_factor_unswizzled(bld, alpha_factor, TRUE); - - rgb_swizzle = lp_build_blend_factor_swizzle(rgb_factor); - - factor2 = lp_build_blend_swizzle(bld, rgb_factor_, alpha_factor_, rgb_swizzle, alpha_swizzle); - - return lp_build_mul(&bld->base, factor1, factor2); -} - - -boolean -lp_build_blend_func_commutative(unsigned func) -{ - switch (func) { - case PIPE_BLEND_ADD: - case PIPE_BLEND_MIN: - case PIPE_BLEND_MAX: - return TRUE; - case PIPE_BLEND_SUBTRACT: - case PIPE_BLEND_REVERSE_SUBTRACT: - return FALSE; - default: - assert(0); - return TRUE; - } -} - - -boolean -lp_build_blend_func_reverse(unsigned rgb_func, unsigned alpha_func) -{ - if(rgb_func == alpha_func) - return FALSE; - if(rgb_func == PIPE_BLEND_SUBTRACT && alpha_func == PIPE_BLEND_REVERSE_SUBTRACT) - return TRUE; - if(rgb_func == PIPE_BLEND_REVERSE_SUBTRACT && alpha_func == PIPE_BLEND_SUBTRACT) - return TRUE; - return FALSE; -} - - -/** - * @sa http://www.opengl.org/sdk/docs/man/xhtml/glBlendEquationSeparate.xml - */ -LLVMValueRef -lp_build_blend_func(struct lp_build_context *bld, - unsigned func, - LLVMValueRef term1, - LLVMValueRef term2) -{ - switch (func) { - case PIPE_BLEND_ADD: - return lp_build_add(bld, term1, term2); - break; - case PIPE_BLEND_SUBTRACT: - return lp_build_sub(bld, term1, term2); - case PIPE_BLEND_REVERSE_SUBTRACT: - return lp_build_sub(bld, term2, term1); - case PIPE_BLEND_MIN: - return lp_build_min(bld, term1, term2); - case PIPE_BLEND_MAX: - return lp_build_max(bld, term1, term2); - default: - assert(0); - return bld->zero; - } -} - - -LLVMValueRef -lp_build_blend_aos(LLVMBuilderRef builder, - const struct pipe_blend_state *blend, - struct lp_type type, - LLVMValueRef src, - LLVMValueRef dst, - LLVMValueRef const_, - unsigned alpha_swizzle) -{ - struct lp_build_blend_aos_context bld; - LLVMValueRef src_term; - LLVMValueRef dst_term; - - /* FIXME */ - assert(blend->independent_blend_enable == 0); - assert(blend->rt[0].colormask == 0xf); - - if(!blend->rt[0].blend_enable) - return src; - - /* It makes no sense to blend unless values are normalized */ - assert(type.norm); - - /* Setup build context */ - memset(&bld, 0, sizeof bld); - lp_build_context_init(&bld.base, builder, type); - bld.src = src; - bld.dst = dst; - bld.const_ = const_; - - /* TODO: There are still a few optimization opportunities here. For certain - * combinations it is possible to reorder the operations and therefore saving - * some instructions. */ - - src_term = lp_build_blend_factor(&bld, src, blend->rt[0].rgb_src_factor, - blend->rt[0].alpha_src_factor, alpha_swizzle); - dst_term = lp_build_blend_factor(&bld, dst, blend->rt[0].rgb_dst_factor, - blend->rt[0].alpha_dst_factor, alpha_swizzle); - - lp_build_name(src_term, "src_term"); - lp_build_name(dst_term, "dst_term"); - - if(blend->rt[0].rgb_func == blend->rt[0].alpha_func) { - return lp_build_blend_func(&bld.base, blend->rt[0].rgb_func, src_term, dst_term); - } - else { - /* Seperate RGB / A functions */ - - LLVMValueRef rgb; - LLVMValueRef alpha; - - rgb = lp_build_blend_func(&bld.base, blend->rt[0].rgb_func, src_term, dst_term); - alpha = lp_build_blend_func(&bld.base, blend->rt[0].alpha_func, src_term, dst_term); - - return lp_build_blend_swizzle(&bld, rgb, alpha, LP_BUILD_BLEND_SWIZZLE_RGBA, alpha_swizzle); - } -} |