zink: update vk sample location info during framebuffer setup
this needs to be stored as a persistent thing on the ctx so it can be reused without needing to be recalculated Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11189>
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@ -1517,6 +1517,24 @@ setup_framebuffer(struct zink_context *ctx)
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struct zink_screen *screen = zink_screen(ctx->base.screen);
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struct zink_render_pass *rp = ctx->gfx_pipeline_state.render_pass;
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if (ctx->gfx_pipeline_state.sample_locations_enabled && ctx->sample_locations_changed) {
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unsigned samples = ctx->gfx_pipeline_state.rast_samples;
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unsigned idx = util_logbase2_ceil(MAX2(samples, 1));
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VkExtent2D grid_size = screen->maxSampleLocationGridSize[idx];
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for (unsigned pixel = 0; pixel < grid_size.width * grid_size.height; pixel++) {
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for (unsigned sample = 0; sample < samples; sample++) {
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unsigned pixel_x = pixel % grid_size.width;
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unsigned pixel_y = pixel / grid_size.width;
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unsigned wi = pixel * samples + sample;
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unsigned ri = (pixel_y * grid_size.width + pixel_x % grid_size.width);
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ri = ri * samples + sample;
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ctx->vk_sample_locations[wi].x = (ctx->sample_locations[ri] & 0xf) / 16.0f;
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ctx->vk_sample_locations[wi].y = (16 - (ctx->sample_locations[ri] >> 4)) / 16.0f;
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}
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}
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}
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if (rp)
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ctx->rp_changed |= ctx->rp_clears_enabled != rp->state.clears;
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if (ctx->rp_changed)
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@ -649,6 +649,8 @@ zink_draw_vbo(struct pipe_context *pctx,
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else
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vkCmdSetDepthBias(batch->state->cmdbuf, 0.0f, 0.0f, 0.0f);
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ctx->sample_locations_changed = false;
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if (ctx->gfx_pipeline_state.blend_state->need_blend_constants)
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vkCmdSetBlendConstants(batch->state->cmdbuf, ctx->blend_constants);
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