OpenHarmony/third_party_mesa3d
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

vbo: map indirect buffer and extract params if doing sw primitive restart

Browse Source 
V2: Check for mapping failure (thanks Brian)
V3: - Change error on mapping failure to OUT_OF_MEMORY (Brian)
    - Unconst; remove casting away of const.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Forbes
2013-10-13 21:00:58 +13:00
parent 3953766e57
commit 093965f9e3
1 changed files with 33 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/mesa/vbo/vbo_primitive_restart.c
View File

@@ -180,6 +180,39 @@ vbo_sw_primitive_restart(struct gl_context *ctx,
GLboolean map_ib = ib->obj->Name && !ib->obj->Pointer;
void *ptr;
/* If there is an indirect buffer, map it and extract the draw params */
if (indirect && prims[0].is_indirect) {
struct _mesa_prim new_prim = *prims;
struct _mesa_index_buffer new_ib = *ib;
const uint32_t *indirect_params;
if (!ctx->Driver.MapBufferRange(ctx, 0, indirect->Size, GL_MAP_READ_BIT,
indirect)) {
/* something went wrong with mapping, give up */
_mesa_error(ctx, GL_OUT_OF_MEMORY,
"failed to map indirect buffer for sw primitive restart");
return;
}
assert(nr_prims == 1);
indirect_params = (const uint32_t *) ADD_POINTERS(indirect->Pointer,
new_prim.indirect_offset);
new_prim.is_indirect = 0;
new_prim.count = indirect_params[0];
new_prim.num_instances = indirect_params[1];
new_prim.start = indirect_params[2];
new_prim.basevertex = indirect_params[3];
new_prim.base_instance = indirect_params[4];
new_ib.count = new_prim.count;
prims = &new_prim;
ib = &new_ib;
ctx->Driver.UnmapBuffer(ctx, indirect);
}
/* Find the sub-primitives. These are regions in the index buffer which
* are split based on the primitive restart index value.
*/