#include "anv_private.h"
#include "nir/nir.h"
#include "nir/nir_builder.h"
+#include "nir/nir_vulkan.h"
struct ycbcr_state {
nir_builder *builder;
struct anv_ycbcr_conversion *conversion;
};
-static nir_ssa_def *
-y_range(nir_builder *b,
- nir_ssa_def *y_channel,
- int bpc,
- VkSamplerYcbcrRange range)
-{
- switch (range) {
- case VK_SAMPLER_YCBCR_RANGE_ITU_FULL:
- return y_channel;
- case VK_SAMPLER_YCBCR_RANGE_ITU_NARROW:
- return nir_fmul(b,
- nir_fadd(b,
- nir_fmul(b, y_channel,
- nir_imm_float(b, pow(2, bpc) - 1)),
- nir_imm_float(b, -16.0f * pow(2, bpc - 8))),
- nir_frcp(b, nir_imm_float(b, 219.0f * pow(2, bpc - 8))));
- default:
- unreachable("missing Ycbcr range");
- return NULL;
- }
-}
-
-static nir_ssa_def *
-chroma_range(nir_builder *b,
- nir_ssa_def *chroma_channel,
- int bpc,
- VkSamplerYcbcrRange range)
-{
- switch (range) {
- case VK_SAMPLER_YCBCR_RANGE_ITU_FULL:
- return nir_fadd(b, chroma_channel,
- nir_imm_float(b, -pow(2, bpc - 1) / (pow(2, bpc) - 1.0f)));
- case VK_SAMPLER_YCBCR_RANGE_ITU_NARROW:
- return nir_fmul(b,
- nir_fadd(b,
- nir_fmul(b, chroma_channel,
- nir_imm_float(b, pow(2, bpc) - 1)),
- nir_imm_float(b, -128.0f * pow(2, bpc - 8))),
- nir_frcp(b, nir_imm_float(b, 224.0f * pow(2, bpc - 8))));
- default:
- unreachable("missing Ycbcr range");
- return NULL;
- }
-}
-
-typedef struct nir_const_value_3_4 {
- nir_const_value v[3][4];
-} nir_const_value_3_4;
-
-static const nir_const_value_3_4 *
-ycbcr_model_to_rgb_matrix(VkSamplerYcbcrModelConversion model)
-{
- switch (model) {
- case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_601: {
- static const nir_const_value_3_4 bt601 = { {
- { { .f32 = 1.402f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
- { { .f32 = -0.714136286201022f }, { .f32 = 1.0f }, { .f32 = -0.344136286201022f }, { .f32 = 0.0f } },
- { { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.772f }, { .f32 = 0.0f } },
- } };
-
- return &bt601;
- }
- case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_709: {
- static const nir_const_value_3_4 bt709 = { {
- { { .f32 = 1.5748031496063f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
- { { .f32 = -0.468125209181067f }, { .f32 = 1.0f }, { .f32 = -0.187327487470334f }, { .f32 = 0.0f } },
- { { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.85563184264242f }, { .f32 = 0.0f } },
- } };
-
- return &bt709;
- }
- case VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_2020: {
- static const nir_const_value_3_4 bt2020 = { {
- { { .f32 = 1.4746f }, { .f32 = 1.0f }, { .f32 = 0.0f }, { .f32 = 0.0f } },
- { { .f32 = -0.571353126843658f }, { .f32 = 1.0f }, { .f32 = -0.164553126843658f }, { .f32 = 0.0f } },
- { { .f32 = 0.0f }, { .f32 = 1.0f }, { .f32 = 1.8814f }, { .f32 = 0.0f } },
- } };
-
- return &bt2020;
- }
- default:
- unreachable("missing Ycbcr model");
- return NULL;
- }
-}
-
-static nir_ssa_def *
-convert_ycbcr(struct ycbcr_state *state,
- nir_ssa_def *raw_channels,
- uint32_t *bpcs)
-{
- nir_builder *b = state->builder;
- struct anv_ycbcr_conversion *conversion = state->conversion;
-
- nir_ssa_def *expanded_channels =
- nir_vec4(b,
- chroma_range(b, nir_channel(b, raw_channels, 0),
- bpcs[0], conversion->ycbcr_range),
- y_range(b, nir_channel(b, raw_channels, 1),
- bpcs[1], conversion->ycbcr_range),
- chroma_range(b, nir_channel(b, raw_channels, 2),
- bpcs[2], conversion->ycbcr_range),
- nir_imm_float(b, 1.0f));
-
- if (conversion->ycbcr_model == VK_SAMPLER_YCBCR_MODEL_CONVERSION_YCBCR_IDENTITY)
- return expanded_channels;
-
- const nir_const_value_3_4 *conversion_matrix =
- ycbcr_model_to_rgb_matrix(conversion->ycbcr_model);
-
- nir_ssa_def *converted_channels[] = {
- nir_fdot4(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[0])),
- nir_fdot4(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[1])),
- nir_fdot4(b, expanded_channels, nir_build_imm(b, 4, 32, conversion_matrix->v[2]))
- };
-
- return nir_vec4(b,
- converted_channels[0], converted_channels[1],
- converted_channels[2], nir_imm_float(b, 1.0f));
-}
-
/* TODO: we should probably replace this with a push constant/uniform. */
static nir_ssa_def *
get_texture_size(struct ycbcr_state *state, nir_deref_instr *texture)
tex->component = old_tex->component;
tex->texture_index = old_tex->texture_index;
- tex->texture_array_size = old_tex->texture_array_size;
tex->sampler_index = old_tex->sampler_index;
tex->is_array = old_tex->is_array;
}
static bool
-try_lower_tex_ycbcr(struct anv_pipeline_layout *layout,
+try_lower_tex_ycbcr(const struct anv_pipeline_layout *layout,
nir_builder *builder,
nir_tex_instr *tex)
{
}
nir_ssa_def *result = nir_vec(builder, swizzled_comp, 4);
- if (state.conversion->ycbcr_model != VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY)
- result = convert_ycbcr(&state, result, swizzled_bpcs);
+ if (state.conversion->ycbcr_model != VK_SAMPLER_YCBCR_MODEL_CONVERSION_RGB_IDENTITY) {
+ result = nir_convert_ycbcr_to_rgb(builder,
+ state.conversion->ycbcr_model,
+ state.conversion->ycbcr_range,
+ result,
+ swizzled_bpcs);
+ }
nir_ssa_def_rewrite_uses(&tex->dest.ssa, nir_src_for_ssa(result));
nir_instr_remove(&tex->instr);
bool
anv_nir_lower_ycbcr_textures(nir_shader *shader,
- struct anv_pipeline_layout *layout)
+ const struct anv_pipeline_layout *layout)
{
bool progress = false;
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