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nvk: Respect tessellation domain origin state

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When switching to lower left tessellation domain origin we need to
switch the orientation for triangles/quads. The changes are based on
what anv and radv do.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24326>
This commit is contained in:
George Ouzounoudis 2023-04-14 16:07:52 +03:00 • committed by Marge Bot
parent 93369f1f96
commit f561406d38
1 changed files with 25 additions and 6 deletions
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31
src/nouveau/vulkan/nvk_graphics_pipeline.c
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@ -204,6 +204,30 @@ static const uint32_t mesa_to_nv9097_shader_type[] = {
[MESA_SHADER_FRAGMENT] = NV9097_SET_PIPELINE_SHADER_TYPE_PIXEL,
};
static void
emit_tessellation_paramaters(struct nv_push *p,
const struct nvk_shader *shader,
const struct vk_tessellation_state *state)
{
const uint32_t cw = NV9097_SET_TESSELLATION_PARAMETERS_OUTPUT_PRIMITIVES_TRIANGLES_CW;
const uint32_t ccw = NV9097_SET_TESSELLATION_PARAMETERS_OUTPUT_PRIMITIVES_TRIANGLES_CCW;
uint32_t output_prims = shader->tp.output_prims;
/* When the origin is lower-left, we have to flip the winding order */
if (state->domain_origin == VK_TESSELLATION_DOMAIN_ORIGIN_LOWER_LEFT) {
if (output_prims == cw) {
output_prims = ccw;
} else if (output_prims == ccw) {
output_prims = cw;
}
}
P_MTHD(p, NV9097, SET_TESSELLATION_PARAMETERS);
P_NV9097_SET_TESSELLATION_PARAMETERS(p, {
shader->tp.domain_type,
shader->tp.spacing,
output_prims
});
}
VkResult
nvk_graphics_pipeline_create(struct nvk_device *device,
struct vk_pipeline_cache *cache,
@ -350,12 +374,7 @@ nvk_graphics_pipeline_create(struct nvk_device *device,
case MESA_SHADER_TESS_CTRL:
case MESA_SHADER_TESS_EVAL:
if (shader->tp.domain_type != ~0) {
P_MTHD(p, NV9097, SET_TESSELLATION_PARAMETERS);
P_NV9097_SET_TESSELLATION_PARAMETERS(p, {
shader->tp.domain_type,
shader->tp.spacing,
shader->tp.output_prims,
});
emit_tessellation_paramaters(p, shader, state.ts);
}
break;