From 232b5864647d4c8d6cebb0845c046f1612e6054d Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jfonseca@vmware.com>
Date: Thu, 22 Oct 2009 20:58:35 +0100
Subject: [PATCH] llvmpipe: Eliminate lp_build_load_rgba_aos.

---
 src/gallium/drivers/llvmpipe/lp_bld_format.h     | 16 +-----------
 src/gallium/drivers/llvmpipe/lp_bld_format_aos.c | 32 +-----------------------
 src/gallium/drivers/llvmpipe/lp_test_format.c    | 19 +++++++++-----
 3 files changed, 15 insertions(+), 52 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format.h b/src/gallium/drivers/llvmpipe/lp_bld_format.h
index 1ea6945..b30537b 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_format.h
+++ b/src/gallium/drivers/llvmpipe/lp_bld_format.h
@@ -51,7 +51,7 @@ struct lp_type;
  */
 LLVMValueRef
 lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
-                         enum pipe_format format,
+                         const struct util_format_description *desc,
                          LLVMValueRef packed);
 
 
@@ -67,20 +67,6 @@ lp_build_pack_rgba_aos(LLVMBuilderRef builder,
 
 
 /**
- * Load a pixel into its RGBA components.
- *
- * @param ptr value with the pointer to the packed pixel. Pointer type is
- * irrelevant.
- *
- * @return RGBA in a 4 floats vector.
- */
-LLVMValueRef
-lp_build_load_rgba_aos(LLVMBuilderRef builder,
-                       enum pipe_format format,
-                       LLVMValueRef ptr);
-
-
-/**
  * Store a pixel.
  *
  * @param rgba 4 float vector with the unpacked components.
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c
index b9b5d84..840e54e 100644
--- a/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c
+++ b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c
@@ -33,10 +33,9 @@
 
 LLVMValueRef
 lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
-                         enum pipe_format format,
+                         const struct util_format_description *desc,
                          LLVMValueRef packed)
 {
-   const struct util_format_description *desc;
    LLVMTypeRef type;
    LLVMValueRef shifted, casted, scaled, masked;
    LLVMValueRef shifts[4];
@@ -49,8 +48,6 @@ lp_build_unpack_rgba_aos(LLVMBuilderRef builder,
    unsigned shift;
    unsigned i;
 
-   desc = util_format_description(format);
-
    /* FIXME: Support more formats */
    assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
    assert(desc->block.width == 1);
@@ -249,33 +246,6 @@ lp_build_pack_rgba_aos(LLVMBuilderRef builder,
 }
 
 
-LLVMValueRef
-lp_build_load_rgba_aos(LLVMBuilderRef builder,
-                       enum pipe_format format,
-                       LLVMValueRef ptr)
-{
-   const struct util_format_description *desc;
-   LLVMTypeRef type;
-   LLVMValueRef packed;
-
-   desc = util_format_description(format);
-
-   /* FIXME: Support more formats */
-   assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH);
-   assert(desc->block.width == 1);
-   assert(desc->block.height == 1);
-   assert(desc->block.bits <= 32);
-
-   type = LLVMIntType(desc->block.bits);
-
-   ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), "");
-
-   packed = LLVMBuildLoad(builder, ptr, "");
-
-   return lp_build_unpack_rgba_aos(builder, format, packed);
-}
-
-
 void
 lp_build_store_rgba_aos(LLVMBuilderRef builder,
                         enum pipe_format format,
diff --git a/src/gallium/drivers/llvmpipe/lp_test_format.c b/src/gallium/drivers/llvmpipe/lp_test_format.c
index 5dc8297..6e50119 100644
--- a/src/gallium/drivers/llvmpipe/lp_test_format.c
+++ b/src/gallium/drivers/llvmpipe/lp_test_format.c
@@ -89,34 +89,41 @@ struct pixel_test_case test_cases[] =
 };
 
 
-typedef void (*load_ptr_t)(const void *, float *);
+typedef void (*load_ptr_t)(const uint32_t packed, float *);
 
 
 static LLVMValueRef
 add_load_rgba_test(LLVMModuleRef module,
                    enum pipe_format format)
 {
+   const struct util_format_description *desc;
    LLVMTypeRef args[2];
    LLVMValueRef func;
-   LLVMValueRef ptr;
+   LLVMValueRef packed;
    LLVMValueRef rgba_ptr;
    LLVMBasicBlockRef block;
    LLVMBuilderRef builder;
    LLVMValueRef rgba;
 
-   args[0] = LLVMPointerType(LLVMInt8Type(), 0);
+   desc = util_format_description(format);
+
+   args[0] = LLVMInt32Type();
    args[1] = LLVMPointerType(LLVMVectorType(LLVMFloatType(), 4), 0);
 
    func = LLVMAddFunction(module, "load", LLVMFunctionType(LLVMVoidType(), args, 2, 0));
    LLVMSetFunctionCallConv(func, LLVMCCallConv);
-   ptr = LLVMGetParam(func, 0);
+   packed = LLVMGetParam(func, 0);
    rgba_ptr = LLVMGetParam(func, 1);
 
    block = LLVMAppendBasicBlock(func, "entry");
    builder = LLVMCreateBuilder();
    LLVMPositionBuilderAtEnd(builder, block);
 
-   rgba = lp_build_load_rgba_aos(builder, format, ptr);
+   if(desc->block.bits < 32)
+      packed = LLVMBuildTrunc(builder, packed, LLVMIntType(desc->block.bits), "");
+
+   rgba = lp_build_unpack_rgba_aos(builder, desc, packed);
+
    LLVMBuildStore(builder, rgba, rgba_ptr);
 
    LLVMBuildRetVoid(builder);
@@ -224,7 +231,7 @@ test_format(const struct pixel_test_case *test)
    memset(unpacked, 0, sizeof unpacked);
    packed = 0;
 
-   load_ptr(&test->packed, unpacked);
+   load_ptr(test->packed, unpacked);
    store_ptr(&packed, unpacked);
 
    success = TRUE;
-- 
2.7.4