gallium/draw: initial code to properly support llvm in the draw module

code generate big chunks of the vertex pipeline in order to speed up
software vertex processing.

1 files changed, 653 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/draw/draw_llvm_translate.c b/src/gallium/auxiliary/draw/draw_llvm_translate.c
new file mode 100644
index 0000000000..588e97b29c
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_llvm_translate.c
@@ -0,0 +1,653 @@
+
+
+
+#include "util/u_memory.h"
+#include "pipe/p_state.h"
+#include "translate.h"
+
+
+#define DRAW_DBG 0
+
+typedef void (*fetch_func)(const void *ptr, float *attrib);
+typedef void (*emit_func)(const float *attrib, void *ptr);
+
+
+
+struct translate_generic {
+   struct translate translate;
+
+   struct {
+      enum translate_element_type type;
+
+      fetch_func fetch;
+      unsigned buffer;
+      unsigned input_offset;
+      unsigned instance_divisor;
+
+      emit_func emit;
+      unsigned output_offset;
+
+      char *input_ptr;
+      unsigned input_stride;
+
+   } attrib[PIPE_MAX_ATTRIBS];
+
+   unsigned nr_attrib;
+};
+
+
+static struct translate_generic *translate_generic( struct translate *translate )
+{
+   return (struct translate_generic *)translate;
+}
+
+/**
+ * Fetch a float[4] vertex attribute from memory, doing format/type
+ * conversion as needed.
+ *
+ * This is probably needed/dupliocated elsewhere, eg format
+ * conversion, texture sampling etc.
+ */
+#define ATTRIB( NAME, SZ, TYPE, FROM, TO )		\
+static void						\
+fetch_##NAME(const void *ptr, float *attrib)		\
+{							\
+   const float defaults[4] = { 0.0f,0.0f,0.0f,1.0f };	\
+   unsigned i;						\
+							\
+   for (i = 0; i < SZ; i++) {				\
+      attrib[i] = FROM(i);				\
+   }							\
+							\
+   for (; i < 4; i++) {					\
+      attrib[i] = defaults[i];				\
+   }							\
+}							\
+							\
+static void						\
+emit_##NAME(const float *attrib, void *ptr)		\
+{  \
+   unsigned i;						\
+   TYPE *out = (TYPE *)ptr;				\
+							\
+   for (i = 0; i < SZ; i++) {				\
+      out[i] = TO(attrib[i]);				\
+   }							\
+}
+
+{
+
+   return conv = instr(builder, bc, "");
+}
+
+static INLINE LLVMValueRef
+from_64_float(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMDoubleType() , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   return LLVMBuildFPTrunc(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_32_float(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMFloatType() , "");
+   return LLVMBuildLoad(builder, bc, "");
+}
+
+static INLINE LLVMValueRef
+from_8_uscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, val, "");
+   return LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_16_uscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(16) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   return LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_32_uscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(32) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   return LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_8_sscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, val, "");
+   return LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_16_sscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(16) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   return LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+}
+
+static INLINE LLVMValueRef
+from_32_sscaled(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(32) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   return LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+}
+
+
+static INLINE LLVMValueRef
+from_8_unorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, val, "");
+   LLVMValueRef uscaled = LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 255.));
+}
+
+static INLINE LLVMValueRef
+from_16_unorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(16) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   LLVMValueRef uscaled = LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 65535.));
+}
+
+static INLINE LLVMValueRef
+from_32_unorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(32) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   LLVMValueRef uscaled = LLVMBuildUIToFP(builder, l, LLVMFloatType(), "");
+
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 4294967295.));
+}
+
+static INLINE LLVMValueRef
+from_8_snorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, val, "");
+   LLVMValueRef uscaled = LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 127.0));
+}
+
+static INLINE LLVMValueRef
+from_16_snorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(16) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   LLVMValueRef uscaled = LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 32767.0f));
+}
+
+static INLINE LLVMValueRef
+from_32_snorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(32) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   LLVMValueRef uscaled = LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 2147483647.0));
+}
+
+static INLINE LLVMValueRef
+from_32_fixed(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef bc = LLVMBuildBitCast(builder, val,
+                                      LLVMIntType(32) , "");
+   LLVMValueRef l = LLVMBuildLoad(builder, bc, "");
+   LLVMValueRef uscaled = LLVMBuildSIToFP(builder, l, LLVMFloatType(), "");
+
+   return LLVMBuildFDiv(builder, uscaled,
+                        LLVMConstReal(builder, 65536.0));
+}
+
+static INLINE LLVMValueRef
+to_64_float(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPExt(builder, l, LLVMDoubleType(), "");
+}
+
+static INLINE LLVMValueRef
+to_32_float(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   return LLVMBuildLoad(builder, fp, "");
+}
+
+atic INLINE LLVMValueRef
+to_8_uscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToUI(builder, l, LLVMIntType(8), "");
+}
+
+static INLINE LLVMValueRef
+to_16_uscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToUI(builder, l, LLVMIntType(16), "");
+}
+
+static INLINE LLVMValueRef
+to_32_uscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToUI(builder, l, LLVMIntType(32), "");
+}
+
+static INLINE LLVMValueRef
+to_8_sscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToSI(builder, l, LLVMIntType(8), "");
+}
+
+static INLINE LLVMValueRef
+to_16_sscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToSI(builder, l, LLVMIntType(16), "");
+}
+
+static INLINE LLVMValueRef
+to_32_sscaled(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   return LLVMBuildFPToSI(builder, l, LLVMIntType(32), "");
+}
+
+static INLINE LLVMValueRef
+to_8_unorm(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToUI(builder, l, LLVMIntType(8), "");
+   return LLVMBuildFMul(builder, uscaled,
+                        LLVMConstReal(builder, 255.));
+}
+
+static INLINE LLVMValueRef
+to_16_unorm(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToUI(builder, l, LLVMIntType(32), "");
+   return LLVMBuildFMul(builder, uscaled,
+                        LLVMConstReal(builder, 65535.));
+}
+
+static INLINE LLVMValueRef
+to_32_unorm(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToUI(builder, l, LLVMIntType(32), "");
+
+   return LLVMBuildFMul(builder, uscaled,
+                        LLVMConstReal(builder, 4294967295.));
+}
+
+static INLINE LLVMValueRef
+to_8_snorm(LLVMBuilderRef builder, LLVMValueRef val)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, val, "");
+   LLVMValueRef uscaled = LLVMBuildFPToSI(builder, l, LLVMIntType(8), "");
+   return LLVMBuildFMUL(builder, uscaled,
+                        LLVMConstReal(builder, 127.0));
+}
+
+static INLINE LLVMValueRef
+to_16_snorm(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToSI(builder, l, LLVMIntType(16), "");
+   return LLVMBuildFMul(builder, uscaled,
+                        LLVMConstReal(builder, 32767.0f));
+}
+
+static INLINE LLVMValueRef
+to_32_snorm(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToSI(builder, l, LLVMIntType(32), "");
+
+   return LLVMBuildFMUL(builder, uscaled,
+                        LLVMConstReal(builder, 2147483647.0));
+}
+
+static INLINE LLVMValueRef
+to_32_fixed(LLVMBuilderRef builder, LLVMValueRef fp)
+{
+   LLVMValueRef l = LLVMBuildLoad(builder, fp, "");
+   LLVMValueRef uscaled = LLVMBuildFPToSI(builder, l, LLVMIntType(32), "");
+
+   return LLVMBuildFMul(builder, uscaled,
+                        LLVMConstReal(builder, 65536.0));
+}
+
+static LLVMValueRef
+fetch(LLVMValueRef ptr, int val_size, int nr_components,
+     LLVMValueRef res)
+{
+   int i;
+   int offset = 0;
+
+   for (i = 0; i < nr_components; ++i) {
+      LLVMValueRef src_index = LLVMConstInt(LLVMInt32Type(), offset, 0);
+      LLVMValueRef dst_index = LLVMConstInt(LLVMInt32Type(), i, 0);
+      //getelementptr i8* ptr, i64 offset
+      LLVMValueRef src_tmp = LLVMBuildGEP(builder, ptr, &src_index, 1, "");
+      //getelementptr float* res, i64 i
+      LLVMValueRef res_tmp = LLVMBuildGEP(builder, res, &dst_index, 1, "");
+      //bitcast i8* src, to res_type*
+      //load res_type src
+      //convert res_type src to float
+      //store float src, float *dst src
+      offset += val_size;
+   }
+}
+
+
+static void
+fetch_B8G8R8A8_UNORM(const void *ptr, float *attrib)
+{
+   attrib[2] = FROM_8_UNORM(0);
+   attrib[1] = FROM_8_UNORM(1);
+   attrib[0] = FROM_8_UNORM(2);
+   attrib[3] = FROM_8_UNORM(3);
+}
+
+static void
+emit_B8G8R8A8_UNORM( const float *attrib, void *ptr)
+{
+   ubyte *out = (ubyte *)ptr;
+   out[2] = TO_8_UNORM(attrib[0]);
+   out[1] = TO_8_UNORM(attrib[1]);
+   out[0] = TO_8_UNORM(attrib[2]);
+   out[3] = TO_8_UNORM(attrib[3]);
+}
+
+static void
+fetch_NULL( const void *ptr, float *attrib )
+{
+   attrib[0] = 0;
+   attrib[1] = 0;
+   attrib[2] = 0;
+   attrib[3] = 1;
+}
+
+static void
+emit_NULL( const float *attrib, void *ptr )
+{
+   /* do nothing is the only sensible option */
+}
+
+typedef LLVMValueRef (*from_func)(LLVMBuilderRef, LLVMValueRef);
+typedef  LLVMValueRef (*to_func)(LLVMBuilderRef, LLVMValueRef);
+
+struct draw_llvm_translate {
+   int format;
+   from_func from;
+   to_func to;
+   LLVMTypeRef type;
+   int num_components;
+} translates[] =
+{
+   {PIPE_FORMAT_R64_FLOAT,          from_64_float, to_64_float, LLVMDoubleType(), 1},
+   {PIPE_FORMAT_R64G64_FLOAT,       from_64_float, to_64_float, LLVMDoubleType(), 2},
+   {PIPE_FORMAT_R64G64B64_FLOAT,    from_64_float, to_64_float, LLVMDoubleType(), 3},
+   {PIPE_FORMAT_R64G64B64A64_FLOAT, from_64_float, to_64_float, LLVMDoubleType(), 4},
+
+   {PIPE_FORMAT_R32_FLOAT,          from_32_float, to_32_float, LLVMFloatType(), 1},
+   {PIPE_FORMAT_R32G32_FLOAT,       from_32_float, to_32_float, LLVMFloatType(), 2},
+   {PIPE_FORMAT_R32G32B32_FLOAT,    from_32_float, to_32_float, LLVMFloatType(), 3},
+   {PIPE_FORMAT_R32G32B32A32_FLOAT, from_32_float, to_32_float, LLVMFloatType(), 4},
+
+   {PIPE_FORMAT_R32_UNORM,          from_32_unorm, to_32_unorm, LLVMIntType(32), 1},
+   {PIPE_FORMAT_R32G32_UNORM,       from_32_unorm, to_32_unorm, LLVMIntType(32), 2},
+   {PIPE_FORMAT_R32G32B32_UNORM,    from_32_unorm, to_32_unorm, LLVMIntType(32), 3},
+   {PIPE_FORMAT_R32G32B32A32_UNORM, from_32_unorm, to_32_unorm, LLVMIntType(32), 4},
+
+   {PIPE_FORMAT_R32_USCALED,          from_32_uscaled, to_32_uscaled, LLVMIntType(32), 1},
+   {PIPE_FORMAT_R32G32_USCALED,       from_32_uscaled, to_32_uscaled, LLVMIntType(32), 2},
+   {PIPE_FORMAT_R32G32B32_USCALED,    from_32_uscaled, to_32_uscaled, LLVMIntType(32), 3},
+   {PIPE_FORMAT_R32G32B32A32_USCALED, from_32_uscaled, to_32_uscaled, LLVMIntType(32), 4},
+
+   {PIPE_FORMAT_R32_SNORM,          from_32_snorm, to_32_snorm, LLVMIntType(32), 1},
+   {PIPE_FORMAT_R32G32_SNORM,       from_32_snorm, to_32_snorm, LLVMIntType(32), 2},
+   {PIPE_FORMAT_R32G32B32_SNORM,    from_32_snorm, to_32_snorm, LLVMIntType(32), 3},
+   {PIPE_FORMAT_R32G32B32A32_SNORM, from_32_snorm, to_32_snorm, LLVMIntType(32), 4},
+
+   {PIPE_FORMAT_R32_SSCALED,          from_32_sscaled, to_32_sscaled, LLVMIntType(32), 1},
+   {PIPE_FORMAT_R32G32_SSCALED,       from_32_sscaled, to_32_sscaled, LLVMIntType(32), 2},
+   {PIPE_FORMAT_R32G32B32_SSCALED,    from_32_sscaled, to_32_sscaled, LLVMIntType(32), 3},
+   {PIPE_FORMAT_R32G32B32A32_SSCALED, from_32_sscaled, to_32_sscaled, LLVMIntType(32), 4},
+
+   {PIPE_FORMAT_R16_UNORM,          from_16_unorm, to_16_unorm, LLVMIntType(16), 1},
+   {PIPE_FORMAT_R16G16_UNORM,       from_16_unorm, to_16_unorm, LLVMIntType(16), 2},
+   {PIPE_FORMAT_R16G16B16_UNORM,    from_16_unorm, to_16_unorm, LLVMIntType(16), 3},
+   {PIPE_FORMAT_R16G16B16A16_UNORM, from_16_unorm, to_16_unorm, LLVMIntType(16), 4},
+
+   {PIPE_FORMAT_R16_USCALED,          from_16_uscaled, to_16_uscaled, LLVMIntType(16), 1},
+   {PIPE_FORMAT_R16G16_USCALED,       from_16_uscaled, to_16_uscaled, LLVMIntType(16), 2},
+   {PIPE_FORMAT_R16G16B16_USCALED,    from_16_uscaled, to_16_uscaled, LLVMIntType(16), 3},
+   {PIPE_FORMAT_R16G16B16A16_USCALED, from_16_uscaled, to_16_uscaled, LLVMIntType(16), 4},
+
+   {PIPE_FORMAT_R16_SNORM,          from_16_snorm, to_16_snorm, LLVMIntType(16), 1},
+   {PIPE_FORMAT_R16G16_SNORM,       from_16_snorm, to_16_snorm, LLVMIntType(16), 2},
+   {PIPE_FORMAT_R16G16B16_SNORM,    from_16_snorm, to_16_snorm, LLVMIntType(16), 3},
+   {PIPE_FORMAT_R16G16B16A16_SNORM, from_16_snorm, to_16_snorm, LLVMIntType(16), 4},
+
+   {PIPE_FORMAT_R16_SSCALED,          from_16_sscaled, to_16_sscaled, LLVMIntType(16), 1},
+   {PIPE_FORMAT_R16G16_SSCALED,       from_16_sscaled, to_16_sscaled, LLVMIntType(16), 2},
+   {PIPE_FORMAT_R16G16B16_SSCALED,    from_16_sscaled, to_16_sscaled, LLVMIntType(16), 3},
+   {PIPE_FORMAT_R16G16B16A16_SSCALED, from_16_sscaled, to_16_sscaled, LLVMIntType(16), 4},
+
+   {PIPE_FORMAT_R8_UNORM,       from_8_unorm, to_8_unorm, LLVMIntType(8), 1},
+   {PIPE_FORMAT_R8G8_UNORM,     from_8_unorm, to_8_unorm, LLVMIntType(8), 2},
+   {PIPE_FORMAT_R8G8B8_UNORM,   from_8_unorm, to_8_unorm, LLVMIntType(8), 3},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, from_8_unorm, to_8_unorm, LLVMIntType(8), 4},
+
+   {PIPE_FORMAT_R8_USCALED,       from_8_uscaled, to_8_uscaled, LLVMIntType(8), 1},
+   {PIPE_FORMAT_R8G8_USCALED,     from_8_uscaled, to_8_uscaled, LLVMIntType(8), 2},
+   {PIPE_FORMAT_R8G8B8_USCALED,   from_8_uscaled, to_8_uscaled, LLVMIntType(8), 3},
+   {PIPE_FORMAT_R8G8B8A8_USCALED, from_8_uscaled, to_8_uscaled, LLVMIntType(8), 4},
+
+   {PIPE_FORMAT_R8_SNORM,       from_8_snorm, to_8_snorm, LLVMIntType(8), 1},
+   {PIPE_FORMAT_R8G8_SNORM,     from_8_snorm, to_8_snorm, LLVMIntType(8), 2},
+   {PIPE_FORMAT_R8G8B8_SNORM,   from_8_snorm, to_8_snorm, LLVMIntType(8), 3},
+   {PIPE_FORMAT_R8G8B8A8_SNORM, from_8_snorm, to_8_snorm, LLVMIntType(8), 4},
+
+   {PIPE_FORMAT_R8_SSCALED,       from_8_sscaled, to_8_sscaled, LLVMIntType(8), 1},
+   {PIPE_FORMAT_R8G8_SSCALED,     from_8_sscaled, to_8_sscaled, LLVMIntType(8), 2},
+   {PIPE_FORMAT_R8G8B8_SSCALED,   from_8_sscaled, to_8_sscaled, LLVMIntType(8), 3},
+   {PIPE_FORMAT_R8G8B8A8_SSCALED, from_8_sscaled, to_8_sscaled, LLVMIntType(8), 4},
+
+   {PIPE_FORMAT_R32_FIXED,          from_32_fixed, to_32_fixed, LLVMIntType(32), 1},
+   {PIPE_FORMAT_R32G32_FIXED,       from_32_fixed, to_32_fixed, LLVMIntType(32), 2},
+   {PIPE_FORMAT_R32G32B32_FIXED,    from_32_fixed, to_32_fixed, LLVMIntType(32), 3},
+   {PIPE_FORMAT_R32G32B32A32_FIXED, from_32_fixed, to_32_fixed, LLVMIntType(32), 4},
+
+   {PIPE_FORMAT_A8R8G8B8_UNORM, from_8_unorm, to_8_unorm, LLVMIntType(8), 4},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, from_8_unorm, to_8_unorm, LLVMIntType(), 4},
+};
+
+/**
+ * Fetch vertex attributes for 'count' vertices.
+ */
+static void PIPE_CDECL generic_run_elts( struct translate *translate,
+                                         const unsigned *elts,
+                                         unsigned count,
+                                         unsigned instance_id,
+                                         void *output_buffer )
+{
+   struct translate_generic *tg = translate_generic(translate);
+   char *vert = output_buffer;
+   unsigned nr_attrs = tg->nr_attrib;
+   unsigned attr;
+   unsigned i;
+
+   /* loop over vertex attributes (vertex shader inputs)
+    */
+   for (i = 0; i < count; i++) {
+      unsigned elt = *elts++;
+
+      for (attr = 0; attr < nr_attrs; attr++) {
+	 float data[4];
+         const char *src;
+
+	 char *dst = (vert +
+		      tg->attrib[attr].output_offset);
+
+         if (tg->attrib[attr].instance_divisor) {
+            src = tg->attrib[attr].input_ptr +
+                  tg->attrib[attr].input_stride *
+                  (instance_id / tg->attrib[attr].instance_divisor);
+         } else {
+            src = tg->attrib[attr].input_ptr +
+                  tg->attrib[attr].input_stride * elt;
+         }
+
+	 tg->attrib[attr].fetch( src, data );
+
+         if (0) debug_printf("vert %d/%d attr %d: %f %f %f %f\n",
+                             i, elt, attr, data[0], data[1], data[2], data[3]);
+
+	 tg->attrib[attr].emit( data, dst );
+      }
+
+      vert += tg->translate.key.output_stride;
+   }
+}
+
+
+
+static void PIPE_CDECL generic_run( struct translate *translate,
+                                    unsigned start,
+                                    unsigned count,
+                                    unsigned instance_id,
+                                    void *output_buffer )
+{
+   struct translate_generic *tg = translate_generic(translate);
+   char *vert = output_buffer;
+   unsigned nr_attrs = tg->nr_attrib;
+   unsigned attr;
+   unsigned i;
+
+   /* loop over vertex attributes (vertex shader inputs)
+    */
+   for (i = 0; i < count; i++) {
+      unsigned elt = start + i;
+
+      for (attr = 0; attr < nr_attrs; attr++) {
+	 float data[4];
+
+	 char *dst = (vert +
+		      tg->attrib[attr].output_offset);
+
+         if (tg->attrib[attr].type == TRANSLATE_ELEMENT_NORMAL) {
+            const char *src;
+
+            if (tg->attrib[attr].instance_divisor) {
+               src = tg->attrib[attr].input_ptr +
+                     tg->attrib[attr].input_stride *
+                     (instance_id / tg->attrib[attr].instance_divisor);
+            } else {
+               src = tg->attrib[attr].input_ptr +
+                     tg->attrib[attr].input_stride * elt;
+            }
+
+            tg->attrib[attr].fetch( src, data );
+         } else {
+            data[0] = (float)instance_id;
+         }
+
+         if (0) debug_printf("vert %d attr %d: %f %f %f %f\n",
+                             i, attr, data[0], data[1], data[2], data[3]);
+
+	 tg->attrib[attr].emit( data, dst );
+      }
+
+      vert += tg->translate.key.output_stride;
+   }
+}
+
+
+
+static void generic_set_buffer( struct translate *translate,
+				unsigned buf,
+				const void *ptr,
+				unsigned stride )
+{
+   struct translate_generic *tg = translate_generic(translate);
+   unsigned i;
+
+   for (i = 0; i < tg->nr_attrib; i++) {
+      if (tg->attrib[i].buffer == buf) {
+	 tg->attrib[i].input_ptr = ((char *)ptr +
+				    tg->attrib[i].input_offset);
+	 tg->attrib[i].input_stride = stride;
+      }
+   }
+}
+
+
+static void generic_release( struct translate *translate )
+{
+   /* Refcount?
+    */
+   FREE(translate);
+}
+
+struct translate *translate_generic_create( const struct translate_key *key )
+{
+   struct translate_generic *tg = CALLOC_STRUCT(translate_generic);
+   unsigned i;
+
+   if (tg == NULL)
+      return NULL;
+
+   tg->translate.key = *key;
+   tg->translate.release = generic_release;
+   tg->translate.set_buffer = generic_set_buffer;
+   tg->translate.run_elts = generic_run_elts;
+   tg->translate.run = generic_run;
+
+   for (i = 0; i < key->nr_elements; i++) {
+      tg->attrib[i].type = key->element[i].type;
+
+      tg->attrib[i].fetch = get_fetch_func(key->element[i].input_format);
+      tg->attrib[i].buffer = key->element[i].input_buffer;
+      tg->attrib[i].input_offset = key->element[i].input_offset;
+      tg->attrib[i].instance_divisor = key->element[i].instance_divisor;
+
+      tg->attrib[i].emit = get_emit_func(key->element[i].output_format);
+      tg->attrib[i].output_offset = key->element[i].output_offset;
+
+   }
+
+   tg->nr_attrib = key->nr_elements;
+
+
+   return &tg->translate;
+}