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mesa: implement sparse storage buffer allocation

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v2:
- spec quote and style (Ian)

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle 2017-02-02 21:50:32 +01:00
parent 94227684c4
commit d6fcbe1c2a
1 changed files with 23 additions and 6 deletions
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29
src/mesa/main/bufferobj.c
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@ -1536,16 +1536,33 @@ _mesa_buffer_storage(struct gl_context *ctx, struct gl_buffer_object *bufObj,
return;
}
if (flags & ~(GL_MAP_READ_BIT |
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT |
GL_DYNAMIC_STORAGE_BIT |
GL_CLIENT_STORAGE_BIT)) {
GLbitfield valid_flags = GL_MAP_READ_BIT |
GL_MAP_WRITE_BIT |
GL_MAP_PERSISTENT_BIT |
GL_MAP_COHERENT_BIT |
GL_DYNAMIC_STORAGE_BIT |
GL_CLIENT_STORAGE_BIT;
if (ctx->Extensions.ARB_sparse_buffer)
valid_flags |= GL_SPARSE_STORAGE_BIT_ARB;
if (flags & ~valid_flags) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(invalid flag bits set)", func);
return;
}
/* The Errors section of the GL_ARB_sparse_buffer spec says:
*
* "INVALID_VALUE is generated by BufferStorage if <flags> contains
* SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
* MAP_READ_BIT or MAP_WRITE_BIT."
*/
if (flags & GL_SPARSE_STORAGE_BIT_ARB &&
flags & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(SPARSE_STORAGE and READ/WRITE)", func);
return;
}
if (flags & GL_MAP_PERSISTENT_BIT &&
!(flags & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT))) {
_mesa_error(ctx, GL_INVALID_VALUE,