llvmpipe: SoA blending.

Throughput seems to be 4x higher.

1 files changed, 0 insertions, 313 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_blend.c b/src/gallium/drivers/llvmpipe/lp_bld_blend.c
deleted file mode 100644
index a144469b354..00000000000
--- a/src/gallium/drivers/llvmpipe/lp_bld_blend.c
+++ /dev/null
@@ -1,313 +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.
- *
- * This code is generic -- it should be able to cope both with floating point
- * and integer inputs in AOS form.
- *
- * @author Jose Fonseca <[email protected]>
- */
-
-
-#include "pipe/p_state.h"
-
-#include "lp_bld.h"
-#include "lp_bld_type.h"
-#include "lp_bld_const.h"
-#include "lp_bld_arit.h"
-#include "lp_bld_swizzle.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_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_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_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_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);
-}
-
-
-/**
- * @sa http://www.opengl.org/sdk/docs/man/xhtml/glBlendEquationSeparate.xml
- */
-static LLVMValueRef
-lp_build_blend_func(struct lp_build_blend_context *bld,
-                    unsigned func,
-                    LLVMValueRef term1, 
-                    LLVMValueRef term2)
-{
-   switch (func) {
-   case PIPE_BLEND_ADD:
-      return lp_build_add(&bld->base, term1, term2);
-      break;
-   case PIPE_BLEND_SUBTRACT:
-      return lp_build_sub(&bld->base, term1, term2);
-   case PIPE_BLEND_REVERSE_SUBTRACT:
-      return lp_build_sub(&bld->base, term2, term1);
-   case PIPE_BLEND_MIN:
-      return lp_build_min(&bld->base, term1, term2);
-   case PIPE_BLEND_MAX:
-      return lp_build_max(&bld->base, term1, term2);
-   default:
-      assert(0);
-      return bld->base.zero;
-   }
-}
-
-
-LLVMValueRef
-lp_build_blend(LLVMBuilderRef builder,
-               const struct pipe_blend_state *blend,
-               union lp_type type,
-               LLVMValueRef src,
-               LLVMValueRef dst,
-               LLVMValueRef const_,
-               unsigned alpha_swizzle)
-{
-   struct lp_build_blend_context bld;
-   LLVMValueRef src_term;
-   LLVMValueRef dst_term;
-
-   /* 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 oportunities here. For certain
-    * combinations it is possible to reorder the operations and therefor saving
-    * some instructions. */
-
-   src_term = lp_build_blend_factor(&bld, src, blend->rgb_src_factor, blend->alpha_src_factor, alpha_swizzle);
-   dst_term = lp_build_blend_factor(&bld, dst, blend->rgb_dst_factor, blend->alpha_dst_factor, alpha_swizzle);
-
-#ifdef DEBUG
-   LLVMSetValueName(src_term, "src_term");
-   LLVMSetValueName(dst_term, "dst_term");
-#endif
-
-   if(blend->rgb_func == blend->alpha_func) {
-      return lp_build_blend_func(&bld, blend->rgb_func, src_term, dst_term);
-   }
-   else {
-      /* Seperate RGB / A functions */
-
-      LLVMValueRef rgb;
-      LLVMValueRef alpha;
-
-      rgb   = lp_build_blend_func(&bld, blend->rgb_func,   src_term, dst_term);
-      alpha = lp_build_blend_func(&bld, blend->alpha_func, src_term, dst_term);
-
-      return lp_build_blend_swizzle(&bld, rgb, alpha, LP_BUILD_BLEND_SWIZZLE_RGBA, alpha_swizzle);
-   }
-}