From: Zack Rusin Date: Fri, 2 Aug 2013 05:24:41 +0000 (-0400) Subject: tgsi: detect prim id and front face usage in fs X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=36096af02603a72855fee1c4a48a0a60baba7c32;p=mesa.git tgsi: detect prim id and front face usage in fs Adding code to detect the usage of prim id and front face semantics in fragment shaders. Signed-off-by: Zack Rusin Reviewed-by: Roland Scheidegger Reviewed-by: Jose Fonseca --- diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c index 1fe1a07d7c3..e7bf6e660e0 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.c +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c @@ -166,9 +166,14 @@ tgsi_scan_shader(const struct tgsi_token *tokens, info->input_cylindrical_wrap[reg] = (ubyte)fulldecl->Interp.CylindricalWrap; info->num_inputs++; - if (procType == TGSI_PROCESSOR_FRAGMENT && - fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) + if (procType == TGSI_PROCESSOR_FRAGMENT) { + if (fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) info->reads_position = TRUE; + else if (fulldecl->Semantic.Name == TGSI_SEMANTIC_PRIMID) + info->uses_primid = TRUE; + else if (fulldecl->Semantic.Name == TGSI_SEMANTIC_FACE) + info->uses_frontface = TRUE; + } } else if (file == TGSI_FILE_SYSTEM_VALUE) { unsigned index = fulldecl->Range.First; diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h index cfa2b8e66c5..e2fa73a3fa7 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.h +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h @@ -74,6 +74,7 @@ struct tgsi_shader_info boolean uses_instanceid; boolean uses_vertexid; boolean uses_primid; + boolean uses_frontface; boolean origin_lower_left; boolean pixel_center_integer; boolean color0_writes_all_cbufs;