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radeonsi: don't count the exact needed CS space if the CS is large enough

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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Marek Olšák 2015-06-27 14:49:34 +02:00
parent 6d6208a431
commit 0615ad1c70
1 changed files with 11 additions and 2 deletions
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13
src/gallium/drivers/radeonsi/si_hw_context.c
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@ -30,8 +30,17 @@
void si_need_cs_space(struct si_context *ctx, unsigned num_dw,
boolean count_draw_in)
{
struct radeon_winsys_cs *cs = ctx->b.rings.gfx.cs;
int i;
/* If the CS is sufficiently large, don't count the space needed
* and just flush if there is less than 8096 dwords left. */
if (cs->max_dw >= 24 * 1024) {
if (cs->cdw > cs->max_dw - 8 * 1024)
ctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
return;
}
/* There are two memory usage counters in the winsys for all buffers
* that have been added (cs_add_reloc) and two counters in the pipe
* driver for those that haven't been added yet.
@ -46,7 +55,7 @@ void si_need_cs_space(struct si_context *ctx, unsigned num_dw,
ctx->b.vram = 0;
/* The number of dwords we already used in the CS so far. */
num_dw += ctx->b.rings.gfx.cs->cdw;
num_dw += cs->cdw;
if (count_draw_in) {
for (i = 0; i < SI_NUM_ATOMS(ctx); i++) {
@ -86,7 +95,7 @@ void si_need_cs_space(struct si_context *ctx, unsigned num_dw,
#endif
/* Flush if there's not enough space. */
if (num_dw > ctx->b.rings.gfx.cs->max_dw) {
if (num_dw > cs->max_dw) {
ctx->b.rings.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
}
}