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tgsi: Check in scan for fs position and depth reads

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This commit is contained in:
Jakob Bornecrantz
2011-04-07 13:20:33 +01:00
committed by Brian Paul
parent 379353e16b
commit c8c2fc9a7a
2 changed files with 17 additions and 0 deletions
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src/gallium/auxiliary/tgsi/tgsi_scan.c
+15
View File
@@ -108,6 +108,17 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
assert(ind < PIPE_MAX_SHADER_INPUTS);
info->input_usage_mask[ind] |= usage_mask;
}
if (procType == TGSI_PROCESSOR_FRAGMENT &&
src->Register.File == TGSI_FILE_INPUT &&
info->reads_position &&
src->Register.Index == 0 &&
(src->Register.SwizzleX == TGSI_SWIZZLE_Z ||
src->Register.SwizzleY == TGSI_SWIZZLE_Z ||
src->Register.SwizzleZ == TGSI_SWIZZLE_Z ||
src->Register.SwizzleW == TGSI_SWIZZLE_Z)) {
info->reads_z = TRUE;
}
}
/* check for indirect register reads */
@@ -150,6 +161,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens,
info->input_centroid[reg] = (ubyte)fulldecl->Declaration.Centroid;
info->input_cylindrical_wrap[reg] = (ubyte)fulldecl->Declaration.CylindricalWrap;
info->num_inputs++;
if (procType == TGSI_PROCESSOR_FRAGMENT &&
fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION)
info->reads_position = TRUE;
}
else if (file == TGSI_FILE_SYSTEM_VALUE) {
unsigned index = fulldecl->Range.First;
src/gallium/auxiliary/tgsi/tgsi_scan.h
+2
View File
@@ -63,6 +63,8 @@ struct tgsi_shader_info
uint opcode_count[TGSI_OPCODE_LAST]; /**< opcode histogram */
boolean reads_position; /**< does fragment shader read position? */
boolean reads_z; /**< does fragment shader read depth? */
boolean writes_z; /**< does fragment shader write Z value? */
boolean writes_stencil; /**< does fragment shader write stencil value? */
boolean writes_edgeflag; /**< vertex shader outputs edgeflag */