Mesa (master): gallium: use the TGSI_TEXTURE_SHADOW1D/2D/ RECT texture types for TEX instructions
Brian Paul
brianp at kemper.freedesktop.org
Fri Feb 20 21:08:58 UTC 2009
Module: Mesa
Branch: master
Commit: 776971218ef6c6749fcb882a95ae5fc3a1ff5059
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=776971218ef6c6749fcb882a95ae5fc3a1ff5059
Author: Brian Paul <brianp at vmware.com>
Date: Fri Feb 20 14:06:25 2009 -0700
gallium: use the TGSI_TEXTURE_SHADOW1D/2D/RECT texture types for TEX instructions
These texture types were defined but never put to use.
For the time being though, the Mesa->TGSI translater isn't emitting these
targets. See the XXX comment in map_texture_target().
---
src/gallium/auxiliary/tgsi/tgsi_exec.c | 3 ++
.../drivers/i915simple/i915_fpc_translate.c | 11 ++++++
src/mesa/state_tracker/st_mesa_to_tgsi.c | 39 +++++++++++++++-----
3 files changed, 44 insertions(+), 9 deletions(-)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 5c5d8d2..94589cf 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1614,6 +1614,7 @@ exec_tex(struct tgsi_exec_machine *mach,
switch (inst->InstructionExtTexture.Texture) {
case TGSI_TEXTURE_1D:
+ case TGSI_TEXTURE_SHADOW1D:
FETCH(&r[0], 0, CHAN_X);
@@ -1636,6 +1637,8 @@ exec_tex(struct tgsi_exec_machine *mach,
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
+ case TGSI_TEXTURE_SHADOW2D:
+ case TGSI_TEXTURE_SHADOWRECT:
FETCH(&r[0], 0, CHAN_X);
FETCH(&r[1], 0, CHAN_Y);
diff --git a/src/gallium/drivers/i915simple/i915_fpc_translate.c b/src/gallium/drivers/i915simple/i915_fpc_translate.c
index d92bdc1..961c1bf 100644
--- a/src/gallium/drivers/i915simple/i915_fpc_translate.c
+++ b/src/gallium/drivers/i915simple/i915_fpc_translate.c
@@ -321,16 +321,27 @@ static uint
translate_tex_src_target(struct i915_fp_compile *p, uint tex)
{
switch (tex) {
+ case TGSI_TEXTURE_SHADOW1D:
+ /* fall-through */
case TGSI_TEXTURE_1D:
return D0_SAMPLE_TYPE_2D;
+
+ case TGSI_TEXTURE_SHADOW2D:
+ /* fall-through */
case TGSI_TEXTURE_2D:
return D0_SAMPLE_TYPE_2D;
+
+ case TGSI_TEXTURE_SHADOWRECT:
+ /* fall-through */
case TGSI_TEXTURE_RECT:
return D0_SAMPLE_TYPE_2D;
+
case TGSI_TEXTURE_3D:
return D0_SAMPLE_TYPE_VOLUME;
+
case TGSI_TEXTURE_CUBE:
return D0_SAMPLE_TYPE_CUBE;
+
default:
i915_program_error(p, "TexSrc type");
return 0;
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 862d29f..8ce0b20 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -132,19 +132,35 @@ map_register_file_index(
*/
static GLuint
map_texture_target(
- GLuint textarget )
+ GLuint textarget,
+ GLboolean shadow )
{
+#if 1
+ /* XXX remove this line after we've checked that the rest of gallium
+ * can handle the TGSI_TEXTURE_SHADOWx tokens.
+ */
+ shadow = GL_FALSE;
+#endif
switch( textarget ) {
case TEXTURE_1D_INDEX:
- return TGSI_TEXTURE_1D;
+ if (shadow)
+ return TGSI_TEXTURE_SHADOW1D;
+ else
+ return TGSI_TEXTURE_1D;
case TEXTURE_2D_INDEX:
- return TGSI_TEXTURE_2D;
+ if (shadow)
+ return TGSI_TEXTURE_SHADOW2D;
+ else
+ return TGSI_TEXTURE_2D;
case TEXTURE_3D_INDEX:
return TGSI_TEXTURE_3D;
case TEXTURE_CUBE_INDEX:
return TGSI_TEXTURE_CUBE;
case TEXTURE_RECT_INDEX:
- return TGSI_TEXTURE_RECT;
+ if (shadow)
+ return TGSI_TEXTURE_SHADOWRECT;
+ else
+ return TGSI_TEXTURE_RECT;
default:
assert( 0 );
}
@@ -514,7 +530,8 @@ compile_instruction(
/* ordinary texture lookup */
fullinst->Instruction.Opcode = TGSI_OPCODE_TEX;
fullinst->Instruction.NumSrcRegs = 2;
- fullinst->InstructionExtTexture.Texture = map_texture_target( inst->TexSrcTarget );
+ fullinst->InstructionExtTexture.Texture =
+ map_texture_target( inst->TexSrcTarget, inst->TexShadow );
fullinst->FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
fullinst->FullSrcRegisters[1].SrcRegister.Index = inst->TexSrcUnit;
break;
@@ -522,7 +539,8 @@ compile_instruction(
/* texture lookup with LOD bias */
fullinst->Instruction.Opcode = TGSI_OPCODE_TXB;
fullinst->Instruction.NumSrcRegs = 2;
- fullinst->InstructionExtTexture.Texture = map_texture_target( inst->TexSrcTarget );
+ fullinst->InstructionExtTexture.Texture =
+ map_texture_target( inst->TexSrcTarget, inst->TexShadow );
fullinst->FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
fullinst->FullSrcRegisters[1].SrcRegister.Index = inst->TexSrcUnit;
break;
@@ -530,7 +548,8 @@ compile_instruction(
/* texture lookup with explicit partial derivatives */
fullinst->Instruction.Opcode = TGSI_OPCODE_TXD;
fullinst->Instruction.NumSrcRegs = 4;
- fullinst->InstructionExtTexture.Texture = map_texture_target( inst->TexSrcTarget );
+ fullinst->InstructionExtTexture.Texture =
+ map_texture_target( inst->TexSrcTarget, inst->TexShadow );
/* src[0] = coord, src[1] = d[strq]/dx, src[2] = d[strq]/dy */
fullinst->FullSrcRegisters[3].SrcRegister.File = TGSI_FILE_SAMPLER;
fullinst->FullSrcRegisters[3].SrcRegister.Index = inst->TexSrcUnit;
@@ -539,7 +558,8 @@ compile_instruction(
/* texture lookup with explicit LOD */
fullinst->Instruction.Opcode = TGSI_OPCODE_TXL;
fullinst->Instruction.NumSrcRegs = 2;
- fullinst->InstructionExtTexture.Texture = map_texture_target( inst->TexSrcTarget );
+ fullinst->InstructionExtTexture.Texture =
+ map_texture_target( inst->TexSrcTarget, inst->TexShadow );
fullinst->FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
fullinst->FullSrcRegisters[1].SrcRegister.Index = inst->TexSrcUnit;
break;
@@ -548,7 +568,8 @@ compile_instruction(
/* convert to TEX w/ special flag for division */
fullinst->Instruction.Opcode = TGSI_OPCODE_TXP;
fullinst->Instruction.NumSrcRegs = 2;
- fullinst->InstructionExtTexture.Texture = map_texture_target( inst->TexSrcTarget );
+ fullinst->InstructionExtTexture.Texture =
+ map_texture_target( inst->TexSrcTarget, inst->TexShadow );
fullinst->FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_SAMPLER;
fullinst->FullSrcRegisters[1].SrcRegister.Index = inst->TexSrcUnit;
break;
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