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etnaviv: dynamically partition the constant memory in unfied uniform mode

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Unified uniform mode allows to dynamically partition the constant memory
by specifying the start of VS and FS constants within the memory area. Use
this to place the FS uniforms directly behind the VS uniforms, potentially
making more space available to FS uniforms.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32983>
This commit is contained in:
Lucas Stach 2025-01-10 22:22:43 +01:00 • committed by Marge Bot
parent 61e289d0ca
commit fdaa216c5d
3 changed files with 6 additions and 7 deletions
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2
src/gallium/drivers/etnaviv/etnaviv_emit.c
View file

@ -714,7 +714,7 @@ etna_emit_state(struct etna_context *ctx)
if (screen->specs.has_unified_uniforms) {
etna_set_state(stream, VIVS_VS_UNIFORM_BASE, 0);
etna_set_state(stream, VIVS_PS_UNIFORM_BASE, screen->specs.max_vs_uniforms);
etna_set_state(stream, VIVS_PS_UNIFORM_BASE, ctx->shader.vs->uniforms.count / 4);
}
if (do_uniform_flush)

8
src/gallium/drivers/etnaviv/etnaviv_screen.c
View file

@ -907,17 +907,13 @@ etna_get_specs(struct etna_screen *screen)
if (screen->info->halti >= 5) {
screen->specs.has_unified_uniforms = true;
screen->specs.vs_uniforms_offset = VIVS_SH_HALTI5_UNIFORMS_MIRROR(0);
screen->specs.ps_uniforms_offset = VIVS_SH_HALTI5_UNIFORMS(screen->specs.max_vs_uniforms*4);
screen->specs.ps_uniforms_offset = VIVS_SH_HALTI5_UNIFORMS(0);
} else if (screen->info->halti >= 1) {
/* unified uniform memory on GC3000 - HALTI1 feature bit is just a guess
*/
screen->specs.has_unified_uniforms = true;
screen->specs.vs_uniforms_offset = VIVS_SH_UNIFORMS(0);
/* hardcode PS uniforms to start after end of VS uniforms -
* for more flexibility this offset could be variable based on the
* shader.
*/
screen->specs.ps_uniforms_offset = VIVS_SH_UNIFORMS(screen->specs.max_vs_uniforms*4);
screen->specs.ps_uniforms_offset = VIVS_SH_UNIFORMS(0);
} else {
screen->specs.has_unified_uniforms = false;
screen->specs.vs_uniforms_offset = VIVS_VS_UNIFORMS(0);

3
src/gallium/drivers/etnaviv/etnaviv_uniforms.c
View file

@ -118,6 +118,9 @@ etna_uniforms_write(const struct etna_context *ctx,
bool frag = (sobj == ctx->shader.fs);
uint32_t base = frag ? screen->specs.ps_uniforms_offset : screen->specs.vs_uniforms_offset;
if (screen->specs.has_unified_uniforms && frag)
base += ctx->shader.vs->uniforms.count * 4;
if (!uinfo->count)
return;