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etnaviv: limit number of varyings to fit into VS outputs

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One of the VS output slots is always occupied by the position
output. Limit the number of user visible varyings to fit into
the remaining slots.

This reduces GL_MAX_VARYING_COMPONENTS to 60 on <halti5 GPUs,
which is still enough to meet the GLES3 minimum requirements.

Fixes piglit shaders@glsl-max-varyings.

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/31032>
This commit is contained in:
Lucas Stach 2024-09-04 16:20:55 +02:00 • committed by Marge Bot
parent dcb61d3da5
commit 5f6ab7dcdf
1 changed files with 5 additions and 1 deletions
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6
src/gallium/drivers/etnaviv/etnaviv_screen.c
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@ -853,7 +853,6 @@ etna_get_specs(struct etna_screen *screen)
if (info->type == ETNA_CORE_GPU) {
instruction_count = info->gpu.max_instructions;
screen->specs.pixel_pipes = info->gpu.pixel_pipes;
screen->specs.max_varyings = MIN2(info->gpu.max_varyings, ETNA_NUM_VARYINGS);
if (screen->npu)
info = etna_gpu_get_core_info(screen->npu);
@ -966,6 +965,11 @@ etna_get_specs(struct etna_screen *screen)
screen->specs.max_vs_outputs = screen->info->halti >= 5 ? 32 : 16;
screen->specs.max_varyings = MIN3(ETNA_NUM_VARYINGS,
info->gpu.max_varyings,
/* one output slot used for position */
screen->specs.max_vs_outputs - 1);
screen->specs.max_texture_size =
VIV_FEATURE(screen, ETNA_FEATURE_TEXTURE_8K) ? 8192 : 2048;
screen->specs.max_rendertarget_size =