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mesa: Add support for ARB_draw_elements_base_vertex.

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This commit is contained in:
Eric Anholt
2009-08-27 10:09:24 -07:00
parent ec9e729580
commit 92d7ed8a20
20 changed files with 453 additions and 131 deletions
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58
src/mesa/tnl/t_draw.c
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@@ -316,22 +316,27 @@ static void bind_indices( GLcontext *ctx,
ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr);
if (ib->type == GL_UNSIGNED_INT) {
if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) {
VB->Elts = (GLuint *) ptr;
}
else {
GLuint *elts = (GLuint *)get_space(ctx, ib->count * sizeof(GLuint));
VB->Elts = elts;
if (ib->type == GL_UNSIGNED_SHORT) {
if (ib->type == GL_UNSIGNED_INT) {
const GLuint *in = (GLuint *)ptr;
for (i = 0; i < ib->count; i++)
*elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
}
else if (ib->type == GL_UNSIGNED_SHORT) {
const GLushort *in = (GLushort *)ptr;
for (i = 0; i < ib->count; i++)
*elts++ = (GLuint)(*in++);
*elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
}
else {
const GLubyte *in = (GLubyte *)ptr;
for (i = 0; i < ib->count; i++)
*elts++ = (GLuint)(*in++);
*elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex;
}
}
}
@@ -390,10 +395,14 @@ void _tnl_draw_prims( GLcontext *ctx,
TNLcontext *tnl = TNL_CONTEXT(ctx);
const GLuint TEST_SPLIT = 0;
const GLint max = TEST_SPLIT ? 8 : tnl->vb.Size - MAX_CLIPPED_VERTICES;
GLuint max_basevertex = prim->basevertex;
GLuint i;
for (i = 1; i < nr_prims; i++)
max_basevertex = MAX2(max_basevertex, prim[i].basevertex);
if (0)
{
GLuint i;
_mesa_printf("%s %d..%d\n", __FUNCTION__, min_index, max_index);
for (i = 0; i < nr_prims; i++)
_mesa_printf("prim %d: %s start %d count %d\n", i,
@@ -410,7 +419,7 @@ void _tnl_draw_prims( GLcontext *ctx,
_tnl_vbo_draw_prims );
return;
}
else if (max_index > max) {
else if (max_index + max_basevertex > max) {
/* The software TNL pipeline has a fixed amount of storage for
* vertices and it is necessary to split incoming drawing commands
* if they exceed that limit.
@@ -424,7 +433,7 @@ void _tnl_draw_prims( GLcontext *ctx,
* recursively call back into this function.
*/
vbo_split_prims( ctx, arrays, prim, nr_prims, ib,
0, max_index,
0, max_index + prim->basevertex,
_tnl_vbo_draw_prims,
&limits );
}
@@ -435,17 +444,34 @@ void _tnl_draw_prims( GLcontext *ctx,
struct gl_buffer_object *bo[VERT_ATTRIB_MAX + 1];
GLuint nr_bo = 0;
/* Binding inputs may imply mapping some vertex buffer objects.
* They will need to be unmapped below.
*/
bind_inputs(ctx, arrays, max_index+1, bo, &nr_bo);
bind_indices(ctx, ib, bo, &nr_bo);
bind_prims(ctx, prim, nr_prims );
for (i = 0; i < nr_prims;) {
GLuint this_nr_prims;
TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
/* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices
* will rebase the elements to the basevertex, and we'll only
* emit strings of prims with the same basevertex in one draw call.
*/
for (this_nr_prims = 1; i + this_nr_prims < nr_prims;
this_nr_prims++) {
if (prim[i].basevertex != prim[i + this_nr_prims].basevertex)
break;
}
unmap_vbos(ctx, bo, nr_bo);
free_space(ctx);
/* Binding inputs may imply mapping some vertex buffer objects.
* They will need to be unmapped below.
*/
bind_prims(ctx, &prim[i], this_nr_prims);
bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1,
bo, &nr_bo);
bind_indices(ctx, ib, bo, &nr_bo);
TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
unmap_vbos(ctx, bo, nr_bo);
free_space(ctx);
i += this_nr_prims;
}
}
}