Use new EMIT_PAD functionality for spec and/or fog as available.

Fix a couple of problems with texture emit.

diff --git a/src/mesa/drivers/dri/i830/i830_tris.c b/src/mesa/drivers/dri/i830/i830_tris.c
index 0adaee4..9c68524 100644 (file)
--- a/src/mesa/drivers/dri/i830/i830_tris.c
+++ b/src/mesa/drivers/dri/i830/i830_tris.c
@@ -689,16 +689,10 @@ static void i830RunPipeline( GLcontext *ctx )
 
 static void set_projective_texturing( i830ContextPtr imesa, 
                                      GLuint i,
-                                     GLuint sz)
+                                     GLuint mcs)
 {
-   GLuint mcs = (imesa->CurrentTexObj[i]->Setup[I830_TEXREG_MCS] & 
-                ~TEXCOORDTYPE_MASK);
-
-   if (sz == 4) {
-      mcs |= TEXCOORDTYPE_HOMOGENEOUS;
-   } else {
-      mcs |= TEXCOORDTYPE_CARTESIAN;
-   }
+   mcs |= (imesa->CurrentTexObj[i]->Setup[I830_TEXREG_MCS] & 
+          ~TEXCOORDTYPE_MASK);
 
    if (mcs != imesa->CurrentTexObj[i]->Setup[I830_TEXREG_MCS]) {
       I830_STATECHANGE(imesa, I830_UPLOAD_TEX_N(i));
@@ -717,6 +711,13 @@ do {                                                                       \
    v0 |= V0;                                                           \
 } while (0)
 
+#define EMIT_PAD( N )                                                  \
+do {                                                                   \
+   imesa->vertex_attrs[imesa->vertex_attr_count].attrib = 0;           \
+   imesa->vertex_attrs[imesa->vertex_attr_count].format = EMIT_PAD;    \
+   imesa->vertex_attrs[imesa->vertex_attr_count].offset = (N);         \
+   imesa->vertex_attr_count++;                                         \
+} while (0)
 
 #define VRTX_TEX_SET_FMT(n, x)          ((x)<<((n)*2))
 
@@ -749,8 +750,15 @@ static void i830RenderStart( GLcontext *ctx )
    EMIT_ATTR( _TNL_ATTRIB_COLOR0, EMIT_4UB_4F_RGBA, VRTX_HAS_DIFFUSE );
       
    if (index & (_TNL_BIT_COLOR1|_TNL_BIT_FOG)) {
-      EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_RGB, VRTX_HAS_SPEC );
-      EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, VRTX_HAS_SPEC );
+      if (index & _TNL_BIT_COLOR1) 
+        EMIT_ATTR( _TNL_ATTRIB_COLOR1, EMIT_3UB_3F_RGB, VRTX_HAS_SPEC );
+      else 
+        EMIT_PAD( 3 );
+
+      if (index & _TNL_BIT_FOG) 
+        EMIT_ATTR( _TNL_ATTRIB_FOG, EMIT_1UB_1F, VRTX_HAS_SPEC );
+      else 
+        EMIT_PAD( 1 );
    }
 
    if (index & _TNL_BITS_TEX_ANY) {
@@ -766,12 +774,33 @@ static void i830RenderStart( GLcontext *ctx )
 
       for (i = 0; i < last_stage; i++) {
         GLuint sz = VB->TexCoordPtr[i]->size;
+        GLuint emit;
+        GLuint mcs;
+
+        /* i830 doesn't like 1D or 4D texcoords:
+         */
+        switch (sz) {
+        case 1: 
+        case 2: 
+        case 3:                /* no attempt at cube texturing so far */
+           emit = EMIT_2F; 
+           sz = 2; 
+           mcs = TEXCOORDTYPE_CARTESIAN; 
+           break;
+        case 4: 
+           emit = EMIT_3F_XYW; 
+           sz = 3;     
+           mcs = TEXCOORDTYPE_HOMOGENEOUS;
+           break;
+        default: 
+           continue;
+        };
        
         v2 |= VRTX_TEX_SET_FMT(i, SZ_TO_HW(sz));
         EMIT_ATTR( _TNL_ATTRIB_TEX0+i, EMIT_SZ(sz), 0 );
 
-        if (imesa->CurrentTexObj[i])
-           set_projective_texturing( imesa, i, sz );
+        if (imesa->CurrentTexObj[i]) 
+           set_projective_texturing( imesa, i, mcs );
       }
 
       v0 |= VRTX_TEX_COORD_COUNT(last_stage);