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radeonsi: Flesh out shader interpolation related code. 

Handle perspective interpolation and ceontroid vs. center.
This commit is contained in:
Michel Dänzer 2012-05-14 16:26:19 +02:00 committed by Michel Dänzer
parent de52a56a0e
commit 1deb2be2b7
3 changed files with 38 additions and 4 deletions
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18
src/gallium/drivers/radeon/SIInstructions.td
View File

@ -934,6 +934,24 @@ def : Pat <
imm:$attr, SReg_32:$params)
>;
def : Pat <
(int_SI_fs_interp_linear_centroid imm:$attr_chan, imm:$attr, SReg_32:$params),
(SI_INTERP (f32 LINEAR_CENTROID_I), (f32 LINEAR_CENTROID_J), imm:$attr_chan,
imm:$attr, SReg_32:$params)
>;
def : Pat <
(int_SI_fs_interp_persp_center imm:$attr_chan, imm:$attr, SReg_32:$params),
(SI_INTERP (f32 PERSP_CENTER_I), (f32 PERSP_CENTER_J), imm:$attr_chan,
imm:$attr, SReg_32:$params)
>;
def : Pat <
(int_SI_fs_interp_persp_centroid imm:$attr_chan, imm:$attr, SReg_32:$params),
(SI_INTERP (f32 PERSP_CENTROID_I), (f32 PERSP_CENTROID_J), imm:$attr_chan,
imm:$attr, SReg_32:$params)
>;
/********** ================== **********/
/********** Intrinsic Patterns **********/
/********** ================== **********/

3
src/gallium/drivers/radeon/SIIntrinsics.td
View File

@ -30,5 +30,8 @@ let TargetPrefix = "SI", isTarget = 1 in {
class Interp : Intrinsic <[llvm_float_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], []>;
def int_SI_fs_interp_linear_center : Interp;
def int_SI_fs_interp_linear_centroid : Interp;
def int_SI_fs_interp_persp_center : Interp;
def int_SI_fs_interp_persp_centroid : Interp;
def int_SI_fs_interp_constant : Interp;
}

21
src/gallium/drivers/radeonsi/radeonsi_shader.c
View File

@ -201,16 +201,29 @@ static void declare_input_fs(
/* XXX: Handle all possible interpolation modes */
switch (decl->Interp.Interpolate) {
case TGSI_INTERPOLATE_COLOR:
if (si_shader_ctx->rctx->rasterizer->flatshade)
if (si_shader_ctx->rctx->rasterizer->flatshade) {
intr_name = "llvm.SI.fs.interp.constant";
else
intr_name = "llvm.SI.fs.interp.linear.center";
} else {
if (decl->Interp.Centroid)
intr_name = "llvm.SI.fs.interp.persp.centroid";
else
intr_name = "llvm.SI.fs.interp.persp.center";
}
break;
case TGSI_INTERPOLATE_CONSTANT:
intr_name = "llvm.SI.fs.interp.constant";
break;
case TGSI_INTERPOLATE_LINEAR:
intr_name = "llvm.SI.fs.interp.linear.center";
if (decl->Interp.Centroid)
intr_name = "llvm.SI.fs.interp.linear.centroid";
else
intr_name = "llvm.SI.fs.interp.linear.center";
break;
case TGSI_INTERPOLATE_PERSPECTIVE:
if (decl->Interp.Centroid)
intr_name = "llvm.SI.fs.interp.persp.centroid";
else
intr_name = "llvm.SI.fs.interp.persp.center";
break;
default:
fprintf(stderr, "Warning: Unhandled interpolation mode.\n");