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authorFrancisco Jerez <currojerez@riseup.net>2010-09-09 14:14:48 +0200
committerFrancisco Jerez <currojerez@riseup.net>2010-09-09 14:19:35 +0200
commit3bbad7f1084c3d6259dfa23fd60f654c949f7408 (patch)
treec196890f8d8fc7325697324739b085e8ea14b57d
parent699749cfeeea7d0a17ed5f94fd5fdbbe52f4ab2b (diff)
dri/nv10-nv20: Add support for NV_texture_env_combine4.
-rw-r--r--src/mesa/drivers/dri/nouveau/nouveau_context.c1
-rw-r--r--src/mesa/drivers/dri/nouveau/nv10_state_frag.c31
2 files changed, 19 insertions, 13 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index b1d415257da..287f77d96c2 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.c
@@ -60,6 +60,7 @@ static const struct dri_extension nouveau_extensions[] = {
{ "GL_EXT_stencil_wrap", NULL },
{ "GL_EXT_texture_lod_bias", NULL },
{ "GL_NV_blend_square", NULL },
+ { "GL_NV_texture_env_combine4", NULL },
{ "GL_SGIS_generate_mipmap", NULL },
{ NULL, NULL }
};
diff --git a/src/mesa/drivers/dri/nouveau/nv10_state_frag.c b/src/mesa/drivers/dri/nouveau/nv10_state_frag.c
index 76b95fdd518..ab713f9dbf5 100644
--- a/src/mesa/drivers/dri/nouveau/nv10_state_frag.c
+++ b/src/mesa/drivers/dri/nouveau/nv10_state_frag.c
@@ -63,6 +63,7 @@
struct combiner_state {
GLcontext *ctx;
int unit;
+ GLboolean premodulate;
/* GL state */
GLenum mode;
@@ -82,6 +83,7 @@ struct combiner_state {
ctx->Texture.Unit[i]._CurrentCombine; \
(rc)->ctx = ctx; \
(rc)->unit = i; \
+ (rc)->premodulate = c->_NumArgs##chan == 4; \
(rc)->mode = c->Mode##chan; \
(rc)->source = c->Source##chan; \
(rc)->operand = c->Operand##chan; \
@@ -95,6 +97,9 @@ static uint32_t
get_input_source(struct combiner_state *rc, int source)
{
switch (source) {
+ case GL_ZERO:
+ return RC_IN_SOURCE(ZERO);
+
case GL_TEXTURE:
return RC_IN_SOURCE(TEXTURE0) + rc->unit;
@@ -228,21 +233,21 @@ setup_combiner(struct combiner_state *rc)
break;
case GL_ADD:
- INPUT_ARG(rc, A, 0, 0);
- INPUT_ONE(rc, B, 0);
- INPUT_ARG(rc, C, 1, 0);
- INPUT_ONE(rc, D, 0);
-
- rc->out = RC_OUT_SUM;
- break;
-
case GL_ADD_SIGNED:
- INPUT_ARG(rc, A, 0, 0);
- INPUT_ONE(rc, B, 0);
- INPUT_ARG(rc, C, 1, 0);
- INPUT_ONE(rc, D, 0);
+ if (rc->premodulate) {
+ INPUT_ARG(rc, A, 0, 0);
+ INPUT_ARG(rc, B, 1, 0);
+ INPUT_ARG(rc, C, 2, 0);
+ INPUT_ARG(rc, D, 3, 0);
+ } else {
+ INPUT_ARG(rc, A, 0, 0);
+ INPUT_ONE(rc, B, 0);
+ INPUT_ARG(rc, C, 1, 0);
+ INPUT_ONE(rc, D, 0);
+ }
- rc->out = RC_OUT_SUM | RC_OUT_BIAS;
+ rc->out = RC_OUT_SUM |
+ (rc->mode == GL_ADD_SIGNED ? RC_OUT_BIAS : 0);
break;
case GL_INTERPOLATE: