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gallium/util: Add a helper function for point sprite handling.

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Many drivers will need to do the same thing here, so consolidate it.

Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2952>
This commit is contained in:
Eric Anholt 2019-12-03 15:26:29 -08:00
parent 622c548967
commit 64cb81a3a4
1 changed files with 19 additions and 0 deletions
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19
src/gallium/auxiliary/util/u_helpers.h
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@ -30,6 +30,7 @@
#include "pipe/p_state.h"
#include "c11/threads.h"
#include "compiler/shader_enums.h"
#include <stdio.h>
#ifdef __cplusplus
@ -56,6 +57,24 @@ bool util_upload_index_buffer(struct pipe_context *pipe,
struct pipe_resource **out_buffer,
unsigned *out_offset, unsigned alignment);
/* Helper function to determine if the varying should contain the point
* coordinates, given the sprite_coord_enable mask. Requires
* PIPE_CAP_TGSI_TEXCOORD to be enabled.
*/
static inline bool
util_varying_is_point_coord(gl_varying_slot slot, uint32_t sprite_coord_enable)
{
if (slot == VARYING_SLOT_PNTC)
return true;
if (slot >= VARYING_SLOT_TEX0 && slot <= VARYING_SLOT_TEX7 &&
(sprite_coord_enable & (1 << (slot - VARYING_SLOT_TEX0)))) {
return true;
}
return false;
}
void
util_pin_driver_threads_to_random_L3(struct pipe_context *ctx,
thrd_t *upper_thread);