diff options
author | Nicolai Hähnle <[email protected]> | 2016-01-11 17:38:08 -0500 |
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committer | Nicolai Hähnle <[email protected]> | 2016-01-14 09:39:38 -0500 |
commit | 654670b4048ae079879a04c41829902060a93931 (patch) | |
tree | b9265281a70b2805571a804434f6fb75f375dc84 /src/gallium/include/pipe/p_context.h | |
parent | 6f4ae810056a1f3c53efe6f0576b9b9c4e847a80 (diff) |
gallium: add PIPE_CAP_INVALIDATE_BUFFER
It makes sense to re-use pipe->invalidate_resource for the purpose of
glInvalidateBufferData, but this function is already implemented in vc4
where it doesn't have the expected behavior. So add a capability flag
to indicate that the driver supports the expected behavior.
Reviewed-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/gallium/include/pipe/p_context.h')
-rw-r--r-- | src/gallium/include/pipe/p_context.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h index be7447de67d..78155c05348 100644 --- a/src/gallium/include/pipe/p_context.h +++ b/src/gallium/include/pipe/p_context.h @@ -649,11 +649,15 @@ struct pipe_context { struct pipe_resource *resource); /** - * Invalidate the contents of the resource. + * Invalidate the contents of the resource. This is used to * - * This is used to implement EGL's semantic of undefined depth/stencil + * (1) implement EGL's semantic of undefined depth/stencil * contenst after a swapbuffers. This allows a tiled renderer (for * example) to not store the depth buffer. + * + * (2) implement GL's InvalidateBufferData. For backwards compatibility, + * you must only rely on the usability for this purpose when + * PIPE_CAP_INVALIDATE_BUFFER is enabled. */ void (*invalidate_resource)(struct pipe_context *ctx, struct pipe_resource *resource); |