summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c
diff options
context:
space:
mode:
authorBen Skeggs <darktama@iinet.net.au>2007-01-27 18:36:01 +1100
committerBen Skeggs <darktama@iinet.net.au>2007-01-30 16:38:30 +1100
commitcafbc459f51ce6645e1fc4b6b2b7ec34efedd874 (patch)
treebe7eb85e824921b84c7f2fdf924f482b2f754711 /src/mesa/drivers/dri/nouveau/nouveau_shader_0.c
parent0c5b42a99182be05a72c78fa9340b75f3be81220 (diff)
nouveau: maintain a map of which vtxprog input corresponds to which array
Diffstat (limited to 'src/mesa/drivers/dri/nouveau/nouveau_shader_0.c')
-rw-r--r--src/mesa/drivers/dri/nouveau/nouveau_shader_0.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c b/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c
index 3bcc2ba755..81ed012c78 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c
@@ -787,6 +787,50 @@ pass0_translate_instructions(nouveauShader *nvs, int ipos, int fpos,
return GL_TRUE;
}
+static void
+pass0_build_attrib_map(nouveauShader *nvs, struct gl_vertex_program *vp)
+{
+ GLuint inputs_read = vp->Base.InputsRead;
+ GLuint input_alloc = ~0xFFFF;
+ int i;
+
+ for (i=0; i<NVS_MAX_ATTRIBS; i++)
+ nvs->vp_attrib_map[i] = -1;
+
+ while (inputs_read) {
+ int in = ffs(inputs_read) - 1;
+ int hw;
+ inputs_read &= ~(1<<in);
+
+ if (vp->IsNVProgram) {
+ /* NVvp: must alias */
+ if (in >= VERT_ATTRIB_GENERIC0)
+ hw = in - VERT_ATTRIB_GENERIC0;
+ else
+ hw = in;
+ } else {
+ /* ARBvp: may alias
+ * GL2.0: must not alias
+ */
+ if (in >= VERT_ATTRIB_GENERIC0)
+ hw = ffs(~input_alloc) - 1;
+ else
+ hw = in;
+ input_alloc |= (1<<hw);
+ }
+
+ nvs->vp_attrib_map[hw] = in;
+ }
+
+ if (NOUVEAU_DEBUG & DEBUG_SHADERS) {
+ printf("vtxprog attrib map:\n");
+ for (i=0; i<NVS_MAX_ATTRIBS; i++) {
+ printf(" hw:%d = attrib:%d\n",
+ i, nvs->vp_attrib_map[i]);
+ }
+ }
+}
+
GLboolean
nouveau_shader_pass0(GLcontext *ctx, nouveauShader *nvs)
{
@@ -801,6 +845,8 @@ nouveau_shader_pass0(GLcontext *ctx, nouveauShader *nvs)
case GL_VERTEX_PROGRAM_ARB:
nvs->func = &nmesa->VPfunc;
+ pass0_build_attrib_map(nvs, vp);
+
if (vp->IsPositionInvariant)
_mesa_insert_mvp_code(ctx, vp);
#if 0