From abc64caef9f131638afe3ef18601905b19bd943c Mon Sep 17 00:00:00 2001 From: Samuel Pitoiset Date: Wed, 10 Mar 2021 16:19:59 +0100 Subject: [PATCH] radv: gather if the FS uses perspective or linear interpolations Signed-off-by: Samuel Pitoiset Reviewed-by: Bas Nieuwenhuizen Part-of: --- src/amd/vulkan/radv_shader.h | 1 + src/amd/vulkan/radv_shader_info.c | 22 +++++++++++++++++++++- 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/src/amd/vulkan/radv_shader.h b/src/amd/vulkan/radv_shader.h index 77ee992d4ef..70b6da71cbf 100644 --- a/src/amd/vulkan/radv_shader.h +++ b/src/amd/vulkan/radv_shader.h @@ -321,6 +321,7 @@ struct radv_shader_info { bool post_depth_coverage; bool reads_sample_mask_in; uint8_t depth_layout; + bool uses_persp_or_linear_interp; } ps; struct { bool uses_grid_size; diff --git a/src/amd/vulkan/radv_shader_info.c b/src/amd/vulkan/radv_shader_info.c index eb3201e14d3..12b594eaf54 100644 --- a/src/amd/vulkan/radv_shader_info.c +++ b/src/amd/vulkan/radv_shader_info.c @@ -132,8 +132,28 @@ gather_intrinsic_info(const nir_shader *nir, const nir_intrinsic_instr *instr, struct radv_shader_info *info) { switch (instr->intrinsic) { + case nir_intrinsic_load_barycentric_sample: + case nir_intrinsic_load_barycentric_pixel: + case nir_intrinsic_load_barycentric_centroid: { + enum glsl_interp_mode mode = nir_intrinsic_interp_mode(instr); + switch (mode) { + case INTERP_MODE_NONE: + case INTERP_MODE_SMOOTH: + case INTERP_MODE_NOPERSPECTIVE: + info->ps.uses_persp_or_linear_interp = true; + break; + default: + break; + } + break; + } + case nir_intrinsic_load_barycentric_at_offset: case nir_intrinsic_load_barycentric_at_sample: - info->ps.needs_sample_positions = true; + if (nir_intrinsic_interp_mode(instr) != INTERP_MODE_FLAT) + info->ps.uses_persp_or_linear_interp = true; + + if (instr->intrinsic == nir_intrinsic_load_barycentric_at_sample) + info->ps.needs_sample_positions = true; break; case nir_intrinsic_load_draw_id: info->vs.needs_draw_id = true;