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authorKeith Whitwell <keith@tungstengraphics.com>2008-06-11 18:46:26 +0100
committerAlan Hourihane <alanh@tungstengraphics.com>2008-06-11 23:56:11 +0100
commit60bd6be35775bc6b4b79e8c312ce1a2748b62e1d (patch)
tree5b8a0b98479a1af9b04431a95156b24088493583
parentbd9264210097d08073a4ea3619ca25db56245280 (diff)
draw: preserve specular alpha when flatshading -- may be FOGCgallium-0.1-dri
-rw-r--r--src/gallium/auxiliary/draw/draw_pipe_flatshade.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe_flatshade.c b/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
index 21a9c3b77f8..4741b22d023 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_flatshade.c
@@ -40,9 +40,19 @@ struct flat_stage
struct draw_stage stage;
uint num_color_attribs;
- uint color_attribs[4]; /* front/back primary/secondary colors */
+ uint color_attribs[2]; /* front/back primary colors */
+
+ uint num_spec_attribs;
+ uint spec_attribs[2]; /* front/back secondary colors */
};
+#define COPY_3FV( DST, SRC ) \
+do { \
+ (DST)[0] = (SRC)[0]; \
+ (DST)[1] = (SRC)[1]; \
+ (DST)[2] = (SRC)[2]; \
+} while (0)
+
static INLINE struct flat_stage *
flat_stage(struct draw_stage *stage)
@@ -58,10 +68,16 @@ static INLINE void copy_colors( struct draw_stage *stage,
{
const struct flat_stage *flat = flat_stage(stage);
uint i;
+
for (i = 0; i < flat->num_color_attribs; i++) {
const uint attr = flat->color_attribs[i];
COPY_4FV(dst->data[attr], src->data[attr]);
}
+
+ for (i = 0; i < flat->num_spec_attribs; i++) {
+ const uint attr = flat->spec_attribs[i];
+ COPY_3FV(dst->data[attr], src->data[attr]);
+ }
}
@@ -78,6 +94,12 @@ static INLINE void copy_colors2( struct draw_stage *stage,
COPY_4FV(dst0->data[attr], src->data[attr]);
COPY_4FV(dst1->data[attr], src->data[attr]);
}
+
+ for (i = 0; i < flat->num_spec_attribs; i++) {
+ const uint attr = flat->spec_attribs[i];
+ COPY_3FV(dst0->data[attr], src->data[attr]);
+ COPY_3FV(dst1->data[attr], src->data[attr]);
+ }
}
@@ -164,10 +186,14 @@ static void flatshade_init_state( struct draw_stage *stage )
/* Find which vertex shader outputs are colors, make a list */
flat->num_color_attribs = 0;
+ flat->num_spec_attribs = 0;
for (i = 0; i < vs->info.num_outputs; i++) {
if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_COLOR ||
vs->info.output_semantic_name[i] == TGSI_SEMANTIC_BCOLOR) {
- flat->color_attribs[flat->num_color_attribs++] = i;
+ if (vs->info.output_semantic_index[i] == 0)
+ flat->color_attribs[flat->num_color_attribs++] = i;
+ else
+ flat->spec_attribs[flat->num_spec_attribs++] = i;
}
}