v3dv: lower interpolateAt functions in NIR and enable sample rate shading
The lowering will get all the interpolateAt() functions from GLSL lowered to
the corresponding intrinsics we have just implemented in the compiler backend,
which was the last piece we needed to enable the feature.
This gets us to pass all the relevant tests in:
dEQP-VK.pipeline.multisample_interpolation.*
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
diff --git a/src/broadcom/vulkan/v3dv_device.c b/src/broadcom/vulkan/v3dv_device.c
index 57635df..00a1747 100644
--- a/src/broadcom/vulkan/v3dv_device.c
+++ b/src/broadcom/vulkan/v3dv_device.c
@@ -635,7 +635,7 @@
.independentBlend = false,
.geometryShader = false,
.tessellationShader = false,
- .sampleRateShading = false,
+ .sampleRateShading = true,
.dualSrcBlend = false,
.logicOp = false,
.multiDrawIndirect = false,
diff --git a/src/broadcom/vulkan/v3dv_pipeline.c b/src/broadcom/vulkan/v3dv_pipeline.c
index b0a5c0d..7389bbb 100644
--- a/src/broadcom/vulkan/v3dv_pipeline.c
+++ b/src/broadcom/vulkan/v3dv_pipeline.c
@@ -258,6 +258,7 @@
.lower_to_scalar = true,
.vertex_id_zero_based = false, /* FIXME: to set this to true, the intrinsic
* needs to be supported */
+ .lower_interpolate_at = true,
};
const nir_shader_compiler_options *
