On 06/10/2013 08:31 AM, Zack Rusin wrote:
cull distance is analogous to clip distance. If a register is given this semantic, then the values in it are assumed to be a float32 distance to a plane. Primitives will be completely discarded if the plane distance for all of the vertices in the primitive are < 0.Signed-off-by: Zack Rusin <za...@vmware.com> --- src/gallium/auxiliary/tgsi/tgsi_scan.c | 4 ++++ src/gallium/auxiliary/tgsi/tgsi_scan.h | 1 + src/gallium/auxiliary/tgsi/tgsi_strings.c | 3 ++- src/gallium/include/pipe/p_shader_tokens.h | 3 ++- 4 files changed, 9 insertions(+), 2 deletions(-) diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.c b/src/gallium/auxiliary/tgsi/tgsi_scan.c index 872e4ff..2a37b38 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.c +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.c @@ -200,6 +200,10 @@ tgsi_scan_shader(const struct tgsi_token *tokens, fulldecl->Semantic.Name == TGSI_SEMANTIC_CLIPDIST) { info->num_written_clipdistance += util_bitcount(fulldecl->Declaration.UsageMask); } + if ((procType == TGSI_PROCESSOR_VERTEX || procType == TGSI_PROCESSOR_GEOMETRY) && + fulldecl->Semantic.Name == TGSI_SEMANTIC_CULLDIST) { + info->num_written_culldistance += util_bitcount(fulldecl->Declaration.UsageMask); + } /* extra info for special outputs */ if (procType == TGSI_PROCESSOR_FRAGMENT && fulldecl->Semantic.Name == TGSI_SEMANTIC_POSITION) diff --git a/src/gallium/auxiliary/tgsi/tgsi_scan.h b/src/gallium/auxiliary/tgsi/tgsi_scan.h index a5b7024..91eef67 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_scan.h +++ b/src/gallium/auxiliary/tgsi/tgsi_scan.h @@ -78,6 +78,7 @@ struct tgsi_shader_info boolean writes_viewport_index; boolean writes_layer; + unsigned num_written_culldistance; unsigned num_written_clipdistance; /** * Bitmask indicating which register files are accessed with diff --git a/src/gallium/auxiliary/tgsi/tgsi_strings.c b/src/gallium/auxiliary/tgsi/tgsi_strings.c index 2785676..6f244e5 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_strings.c +++ b/src/gallium/auxiliary/tgsi/tgsi_strings.c @@ -80,7 +80,8 @@ const char *tgsi_semantic_names[TGSI_SEMANTIC_COUNT] = "TEXCOORD", "PCOORD", "VIEWPORT_INDEX", - "LAYER" + "LAYER", + "CULLDIST" }; const char *tgsi_texture_names[TGSI_TEXTURE_COUNT] = diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h index c984d50..4a6a57f 100644 --- a/src/gallium/include/pipe/p_shader_tokens.h +++ b/src/gallium/include/pipe/p_shader_tokens.h @@ -166,7 +166,8 @@ struct tgsi_declaration_interp #define TGSI_SEMANTIC_PCOORD 20 /**< point sprite coordinate */ #define TGSI_SEMANTIC_VIEWPORT_INDEX 21 /**< viewport index */ #define TGSI_SEMANTIC_LAYER 22 /**< layer (rendertarget index) */ -#define TGSI_SEMANTIC_COUNT 23 /**< number of semantic values */ +#define TGSI_SEMANTIC_CULLDIST 23 +#define TGSI_SEMANTIC_COUNT 24 /**< number of semantic values */ struct tgsi_declaration_semantic {
Reviewed-by: Brian Paul <bri...@vmware.com> _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
