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mesa: Optimize rebinding the same VBO 

Check if the new buffer object has the same name as the current
buffer object before looking it up.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Fredrik Höglund 2013-04-11 16:49:44 +02:00
parent 965900e830
commit 193e8b4b93
1 changed files with 5 additions and 2 deletions
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7
src/mesa/main/varray.c
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@ -1351,9 +1351,10 @@ void GLAPIENTRY
_mesa_BindVertexBuffer(GLuint bindingIndex, GLuint buffer, GLintptr offset,
GLsizei stride)
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
struct gl_buffer_object *vbo;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* The ARB_vertex_attrib_binding spec says:
@ -1398,7 +1399,9 @@ _mesa_BindVertexBuffer(GLuint bindingIndex, GLuint buffer, GLintptr offset,
return;
}
if (buffer != 0) {
if (buffer == arrayObj->VertexBinding[VERT_ATTRIB_GENERIC(bindingIndex)].BufferObj->Name) {
vbo = arrayObj->VertexBinding[VERT_ATTRIB_GENERIC(bindingIndex)].BufferObj;
} else if (buffer != 0) {
vbo = _mesa_lookup_bufferobj(ctx, buffer);
/* From the GL_ARB_vertex_attrib_array spec: