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radeonsi: compute PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT correctly

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Reviewed-by: Mihai Preda <mhpreda@gmail.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16901>
This commit is contained in:
Marek Olšák
2022-06-05 20:26:30 -04:00
committed by Marge Bot
parent aee8ee17a5
commit b750844319
1 changed files with 19 additions and 1 deletions
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src/gallium/drivers/radeonsi/si_get.c
+19 -1
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@@ -233,7 +233,25 @@ static int si_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_GL_BEGIN_END_BUFFER_SIZE:
return 4096 * 1024;
case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT:
case PIPE_CAP_MAX_TEXEL_BUFFER_ELEMENTS_UINT: {
unsigned max_texels =
pscreen->get_param(pscreen, PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT);
/* FYI, BUF_RSRC_WORD2.NUM_RECORDS field limit is UINT32_MAX. */
/* Gfx8 and older use the size in bytes for bounds checking, and the max element size
* is 16B. Gfx9 and newer use the VGPR index for bounds checking.
*/
if (sscreen->info.gfx_level <= GFX8)
max_texels = MIN2(max_texels, UINT32_MAX / 16);
else
/* Gallium has a limitation that it can only bind UINT32_MAX bytes, not texels.
* TODO: Remove this after the gallium interface is changed. */
max_texels = MIN2(max_texels, UINT32_MAX / 16);
return max_texels;
}
case PIPE_CAP_MAX_SHADER_BUFFER_SIZE_UINT: {
/* Return 1/4th of the heap size as the maximum because the max size is not practically
* allocatable. Also, this can only return UINT32_MAX at most.