KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mesa: Only map the necessary buffer range in vbo_get_minmax_index 

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Ian Romanick 2011-08-22 00:14:51 -07:00
parent 28249bd260
commit 655c7d7498
1 changed files with 19 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/mesa/vbo/vbo_exec_array.c
View File

@ -95,10 +95,25 @@ vbo_get_minmax_index(struct gl_context *ctx,
GLuint i;
if (_mesa_is_bufferobj(ib->obj)) {
const GLvoid *map =
ctx->Driver.MapBufferRange(ctx, 0, ib->obj->Size, GL_MAP_READ_BIT,
ib->obj);
indices = ADD_POINTERS(map, ib->ptr);
unsigned map_size;
switch (ib->type) {
case GL_UNSIGNED_INT:
map_size = count * sizeof(GLuint);
break;
case GL_UNSIGNED_SHORT:
map_size = count * sizeof(GLushort);
break;
case GL_UNSIGNED_BYTE:
map_size = count * sizeof(GLubyte);
break;
default:
assert(0);
map_size = 0;
}
indices = ctx->Driver.MapBufferRange(ctx, (GLsizeiptr) ib->ptr, map_size,
GL_MAP_READ_BIT, ib->obj);
} else {
indices = ib->ptr;
}