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mesa: clamp texbuf query size to MAX_TEXTURE_BUFFER_SIZE

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Fixes upcoming CTS test checking for clamping.

Cc: mesa-stable
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34428>
This commit is contained in:
Tapani Pälli
2025-04-02 18:01:12 +03:00
committed by Marge Bot
parent 24b1aa6c28
commit 3bc016bb6c
1 changed files with 9 additions and 2 deletions
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11
src/mesa/main/texparam.c
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@@ -1997,8 +1997,15 @@ get_tex_level_parameter_buffer(struct gl_context *ctx,
*params = bo->Name;
break;
case GL_TEXTURE_WIDTH:
*params = ((texObj->BufferSize == -1) ? bo->Size : texObj->BufferSize)
/ bytes;
/* From OpenGL 4.6 spec "8.9 Buffer Textures":
*
* "The number of texels in the texture image is then clamped to an
* implementation-dependent limit, the value of
* MAX_TEXTURE_BUFFER_SIZE."
*/
*params = CLAMP(((texObj->BufferSize == -1) ?
bo->Size : texObj->BufferSize) / bytes,
0, ctx->Const.MaxTextureBufferSize);
break;
case GL_TEXTURE_HEIGHT:
case GL_TEXTURE_DEPTH: