Vertex program attribute arrays seem to work now. This includes fallbacks

to the conventional arrays when attribute arrays aren't enabled.

4 files changed, 122 insertions, 53 deletions

diff --git a/src/mesa/array_cache/ac_import.c b/src/mesa/array_cache/ac_import.c
index 9867f9f51bf..0f45dc1f891 100644
--- a/src/mesa/array_cache/ac_import.c
+++ b/src/mesa/array_cache/ac_import.c
@@ -1,4 +1,4 @@
-/* $Id: ac_import.c,v 1.17 2002/04/21 18:49:19 brianp Exp $ */
+/* $Id: ac_import.c,v 1.18 2002/04/21 20:37:04 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -183,12 +183,55 @@ static void reset_edgeflag( GLcontext *ctx )
 static void reset_attrib( GLcontext *ctx, GLuint index )
 {
    ACcontext *ac = AC_CONTEXT(ctx);
+   GLboolean fallback = GL_FALSE;
 
+   /*
+    * The 16 NV vertex attribute arrays have top priority.  If one of those
+    * is not enabled, look if a corresponding conventional array is enabled.
+    * If nothing else, use the fallback (ctx->Current.Attrib) values.
+    */
    if (ctx->Array._Enabled & _NEW_ARRAY_ATTRIB(index)) {
       ac->Raw.Attrib[index] = ctx->Array.VertexAttrib[index];
       STRIDE_ARRAY(ac->Raw.Attrib[index], ac->start);
    }
+   else if (ctx->Array._Enabled & (1 << index)) {
+      /* use conventional vertex array */
+      switch (index) {
+         case VERT_ATTRIB_POS:
+            ac->Raw.Attrib[index] = ctx->Array.Vertex;
+            break;
+         case VERT_ATTRIB_NORMAL:
+            ac->Raw.Attrib[index] = ctx->Array.Normal;
+            break;
+         case VERT_ATTRIB_COLOR0:
+            ac->Raw.Attrib[index] = ctx->Array.Color;
+            break;
+         case VERT_ATTRIB_COLOR1:
+            ac->Raw.Attrib[index] = ctx->Array.SecondaryColor;
+            break;
+         case VERT_ATTRIB_FOG:
+            ac->Raw.Attrib[index] = ctx->Array.FogCoord;
+            break;
+         default:
+            if (index >= VERT_ATTRIB_TEX0 && index <= VERT_ATTRIB_TEX7) {
+               GLuint unit = index - VERT_ATTRIB_TEX0;
+               ac->Raw.Attrib[index] = ctx->Array.TexCoord[unit];
+            }
+            else {
+               /* missing conventional array (vertex weight, for example) */
+               fallback = GL_TRUE;
+            }
+            break;
+      }
+      if (!fallback)
+         STRIDE_ARRAY(ac->Raw.Attrib[index], ac->start);
+   }
    else {
+      fallback = GL_TRUE;
+   }
+
+   if (fallback) {
+      /* fallback to ctx->Current.Attrib values */
       ac->Raw.Attrib[index] = ac->Fallback.Attrib[index];
 
       if (ctx->Current.Attrib[index][3] != 1.0)
@@ -766,13 +809,18 @@ struct gl_client_array *_ac_import_attrib( GLcontext *ctx,
 
    /* Can we keep the existing version?
     */
-   if (ac->NewArrayState & _NEW_ARRAY_ATTRIB(index))
+   if (ac->NewArrayState & _NEW_ARRAY_ATTRIB(index)) {
       reset_attrib( ctx, index );
+   }
+   else if (ac->NewArrayState & (1 << index)) {
+      /* Also need to check conventional attributes */
+      reset_attrib( ctx, index );
+   }
 
    /* Is the request impossible?
     */
    if (reqsize != 0 && ac->Raw.Attrib[index].Size > (GLint) reqsize)
-      return 0;
+      return NULL;
 
    /* Do we need to pull in a copy of the client data:
     */
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index a14347fb553..28a1921edd4 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1,4 +1,4 @@
-/* $Id: mtypes.h,v 1.72 2002/04/21 18:49:18 brianp Exp $ */
+/* $Id: mtypes.h,v 1.73 2002/04/21 20:37:04 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1537,8 +1537,8 @@ struct matrix_stack
 #define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5
 #define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6
 #define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7
-#define _NEW_ARRAY_ALL              0xffff
 #define _NEW_ARRAY_ATTRIB_0         0x10000  /* start at bit 16 */
+#define _NEW_ARRAY_ALL              0xffffffff
 
 
 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
diff --git a/src/mesa/tnl/t_array_import.c b/src/mesa/tnl/t_array_import.c
index 50ef1c86e30..082ae4ad3ca 100644
--- a/src/mesa/tnl/t_array_import.c
+++ b/src/mesa/tnl/t_array_import.c
@@ -1,4 +1,4 @@
-/* $Id: t_array_import.c,v 1.23 2002/04/19 00:45:50 brianp Exp $ */
+/* $Id: t_array_import.c,v 1.24 2002/04/21 20:37:04 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -177,7 +177,7 @@ static void _tnl_import_index( GLcontext *ctx,
 
 
 static void _tnl_import_texcoord( GLcontext *ctx,
-				  GLuint i,
+				  GLuint unit,
 				  GLboolean writeable,
 				  GLboolean stride )
 {
@@ -185,21 +185,21 @@ static void _tnl_import_texcoord( GLcontext *ctx,
    struct gl_client_array *tmp;
    GLboolean is_writeable = 0;
 
-   tmp = _ac_import_texcoord(ctx, i, GL_FLOAT,
-			     stride ? 4*sizeof(GLfloat) : 0,
+   tmp = _ac_import_texcoord(ctx, unit, GL_FLOAT,
+			     stride ? 4 * sizeof(GLfloat) : 0,
 			     0,
 			     writeable,
 			     &is_writeable);
 
-   inputs->TexCoord[i].data = (GLfloat (*)[4]) tmp->Ptr;
-   inputs->TexCoord[i].start = (GLfloat *) tmp->Ptr;
-   inputs->TexCoord[i].stride = tmp->StrideB;
-   inputs->TexCoord[i].size = tmp->Size;
-   inputs->TexCoord[i].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
-   if (inputs->TexCoord[i].stride != 4*sizeof(GLfloat))
-      inputs->TexCoord[i].flags |= VEC_BAD_STRIDE;
+   inputs->TexCoord[unit].data = (GLfloat (*)[4]) tmp->Ptr;
+   inputs->TexCoord[unit].start = (GLfloat *) tmp->Ptr;
+   inputs->TexCoord[unit].stride = tmp->StrideB;
+   inputs->TexCoord[unit].size = tmp->Size;
+   inputs->TexCoord[unit].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
+   if (inputs->TexCoord[unit].stride != 4*sizeof(GLfloat))
+      inputs->TexCoord[unit].flags |= VEC_BAD_STRIDE;
    if (!is_writeable)
-      inputs->TexCoord[i].flags |= VEC_NOT_WRITEABLE;
+      inputs->TexCoord[unit].flags |= VEC_NOT_WRITEABLE;
 }
 
 
@@ -228,6 +228,34 @@ static void _tnl_import_edgeflag( GLcontext *ctx,
 
 
 
+static void _tnl_import_attrib( GLcontext *ctx,
+                                GLuint index,
+                                GLboolean writeable,
+                                GLboolean stride )
+{
+   struct vertex_arrays *inputs = &TNL_CONTEXT(ctx)->array_inputs;
+   struct gl_client_array *tmp;
+   GLboolean is_writeable = 0;
+
+   tmp = _ac_import_attrib(ctx, index, GL_FLOAT,
+                           stride ? 4 * sizeof(GLfloat) : 0,
+                           4,  /* want GLfloat[4] */
+                           writeable,
+                           &is_writeable);
+
+   inputs->Attribs[index].data = (GLfloat (*)[4]) tmp->Ptr;
+   inputs->Attribs[index].start = (GLfloat *) tmp->Ptr;
+   inputs->Attribs[index].stride = tmp->StrideB;
+   inputs->Attribs[index].size = tmp->Size;
+   inputs->Attribs[index].flags &= ~(VEC_BAD_STRIDE|VEC_NOT_WRITEABLE);
+   if (inputs->Attribs[index].stride != 4 * sizeof(GLfloat))
+      inputs->Attribs[index].flags |= VEC_BAD_STRIDE;
+   if (!is_writeable)
+      inputs->Attribs[index].flags |= VEC_NOT_WRITEABLE;
+}
+
+
+
 /**
  * Callback for VB stages that need to improve the quality of arrays
  * bound to the VB.  This is only necessary for client arrays which
@@ -300,6 +328,7 @@ static void _tnl_upgrade_client_data( GLcontext *ctx,
 	    VB->importable_data &= ~VERT_BIT_TEX(i);
 	 }
 
+   /* XXX not sure what to do here for vertex program arrays */
 }
 
 
@@ -310,7 +339,6 @@ void _tnl_vb_bind_arrays( GLcontext *ctx, GLint start, GLsizei count )
    struct vertex_buffer *VB = &tnl->vb;
    GLuint inputs = tnl->pipeline.inputs;
    struct vertex_arrays *tmp = &tnl->array_inputs;
-   GLuint i;
 
 /*        fprintf(stderr, "%s %d..%d // %d..%d\n", __FUNCTION__, */
 /*  	      start, count, ctx->Array.LockFirst, ctx->Array.LockCount);  */
@@ -355,11 +383,12 @@ void _tnl_vb_bind_arrays( GLcontext *ctx, GLint start, GLsizei count )
    }
 
    if (inputs & VERT_BITS_TEX_ANY) {
-      for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
-	 if (inputs & VERT_BIT_TEX(i)) {
-	    _tnl_import_texcoord( ctx, i, 0, 0 );
-	    tmp->TexCoord[i].count = VB->Count;
-	    VB->TexCoordPtr[i] = &tmp->TexCoord[i];
+      GLuint unit;
+      for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+	 if (inputs & VERT_BIT_TEX(unit)) {
+	    _tnl_import_texcoord( ctx, unit, GL_FALSE, GL_FALSE );
+	    tmp->TexCoord[unit].count = VB->Count;
+	    VB->TexCoordPtr[unit] = &tmp->TexCoord[unit];
 	 }
       }
    }
@@ -391,20 +420,13 @@ void _tnl_vb_bind_arrays( GLcontext *ctx, GLint start, GLsizei count )
       }
    }
 
+   /* XXX not 100% sure this is finished.  Keith should probably inspect. */
    if (ctx->VertexProgram.Enabled) {
-      /* XXX lots of work to do here */
-
-      VB->AttribPtr[VERT_ATTRIB_POS] = VB->ObjPtr;
-      /*
-      printf("bind vp arrays!\n");
-      printf("   data = %p\n", VB->ObjPtr->data);
-      printf(" stride = %d\n", VB->ObjPtr->stride);
-      printf("   size = %d\n", VB->ObjPtr->size);
-      */
-
-      VB->AttribPtr[VERT_ATTRIB_NORMAL] = VB->NormalPtr;
+      GLuint index;
+      for (index = 0; index < VERT_ATTRIB_MAX; index++) {
+         /* XXX check program->InputsRead to reduce work here */
+         _tnl_import_attrib( ctx, index, GL_FALSE, GL_TRUE );
+         VB->AttribPtr[index] = &tmp->Attribs[index];
+      }
    }
-
 }
-
-
diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
index fea8c11f2b7..d89d006d4f6 100644
--- a/src/mesa/tnl/t_vb_program.c
+++ b/src/mesa/tnl/t_vb_program.c
@@ -1,4 +1,4 @@
-/* $Id: t_vb_program.c,v 1.11 2002/04/04 18:25:40 kschultz Exp $ */
+/* $Id: t_vb_program.c,v 1.12 2002/04/21 20:37:04 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -182,10 +182,6 @@ static GLboolean run_vp( GLcontext *ctx, struct gl_pipeline_stage *stage )
              VB->AttribPtr[2]->data[i][3]);
 #endif
 
-      /* XXXX
-       * We have to deal with stride!=16 bytes, size!=4, etc in these loops!!!
-       */
-
       /* load the input attribute registers */
       if (VB->Flag) {
          /* the traditional glBegin/glVertex/glEnd case */
@@ -199,13 +195,14 @@ static GLboolean run_vp( GLcontext *ctx, struct gl_pipeline_stage *stage )
       else {
          /* the vertex array case */
          for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
-            const GLubyte *ptr = (const GLubyte *) VB->AttribPtr[attr]->data;
-            const GLint stride = VB->AttribPtr[attr]->stride;
-            const GLfloat *data = (GLfloat *) (ptr + stride * i);
-            const GLint size = VB->AttribPtr[attr]->size;
-            COPY_4V(machine->Registers[VP_INPUT_REG_START + attr], data);
-            if (size == 3)
-               machine->Registers[VP_INPUT_REG_START + attr][3] = 1.0;
+            if (program->InputsRead & (1 << attr)) {
+               const GLubyte *ptr = (const GLubyte*) VB->AttribPtr[attr]->data;
+               const GLuint stride = VB->AttribPtr[attr]->stride;
+               const GLfloat *data = (GLfloat *) (ptr + stride * i);
+               COPY_4V(machine->Registers[VP_INPUT_REG_START + attr], data);
+               /*ASSERT(VB->AttribPtr[attr]->size == 4);*/
+               ASSERT(stride == 4 * sizeof(GLfloat) || stride == 0);
+            }
          }
       }
 
@@ -406,10 +403,12 @@ static void check_vp( GLcontext *ctx, struct gl_pipeline_stage *stage )
    stage->active = ctx->VertexProgram.Enabled;
 
    if (stage->active) {
-      /* XXX what do we need here??? */
-      /*
-      GLbitfield vpInput = ctx->VertexProgram.Current->InputsRead;
-      */
+      /* XXX what do we need here???
+       *
+       * I think that:
+       *   stage->inputs = ctx->VertexProgram.Current->InputsRead;
+       * would be correct, and something similar for the outputs.
+       */
 
 #if 000
       if (stage->privatePtr)