diff options
Diffstat (limited to 'src/amd/vulkan/radv_meta.c')
| -rw-r--r-- | src/amd/vulkan/radv_meta.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/amd/vulkan/radv_meta.c b/src/amd/vulkan/radv_meta.c index 1fa0e53a33c..3155f07f6ab 100644 --- a/src/amd/vulkan/radv_meta.c +++ b/src/amd/vulkan/radv_meta.c @@ -492,3 +492,130 @@ radv_meta_build_nir_fs_noop(void) return b.shader; } + +static nir_ssa_def *radv_meta_build_resolve_srgb_conversion(nir_builder *b, + nir_ssa_def *input) +{ + nir_const_value v; + unsigned i; + v.u32[0] = 0x3b4d2e1c; // 0.00313080009 + + nir_ssa_def *cmp[3]; + for (i = 0; i < 3; i++) + cmp[i] = nir_flt(b, nir_channel(b, input, i), + nir_build_imm(b, 1, 32, v)); + + nir_ssa_def *ltvals[3]; + v.f32[0] = 12.92; + for (i = 0; i < 3; i++) + ltvals[i] = nir_fmul(b, nir_channel(b, input, i), + nir_build_imm(b, 1, 32, v)); + + nir_ssa_def *gtvals[3]; + + for (i = 0; i < 3; i++) { + v.f32[0] = 1.0/2.4; + gtvals[i] = nir_fpow(b, nir_channel(b, input, i), + nir_build_imm(b, 1, 32, v)); + v.f32[0] = 1.055; + gtvals[i] = nir_fmul(b, gtvals[i], + nir_build_imm(b, 1, 32, v)); + v.f32[0] = 0.055; + gtvals[i] = nir_fsub(b, gtvals[i], + nir_build_imm(b, 1, 32, v)); + } + + nir_ssa_def *comp[4]; + for (i = 0; i < 3; i++) + comp[i] = nir_bcsel(b, cmp[i], ltvals[i], gtvals[i]); + comp[3] = nir_channels(b, input, 3); + return nir_vec(b, comp, 4); +} + +void radv_meta_build_resolve_shader_core(nir_builder *b, + bool is_integer, + bool is_srgb, + int samples, + nir_variable *input_img, + nir_variable *color, + nir_ssa_def *img_coord) +{ + /* do a txf_ms on each sample */ + nir_ssa_def *tmp; + nir_if *outer_if = NULL; + + nir_tex_instr *tex = nir_tex_instr_create(b->shader, 2); + tex->sampler_dim = GLSL_SAMPLER_DIM_MS; + tex->op = nir_texop_txf_ms; + tex->src[0].src_type = nir_tex_src_coord; + tex->src[0].src = nir_src_for_ssa(img_coord); + tex->src[1].src_type = nir_tex_src_ms_index; + tex->src[1].src = nir_src_for_ssa(nir_imm_int(b, 0)); + tex->dest_type = nir_type_float; + tex->is_array = false; + tex->coord_components = 2; + tex->texture = nir_deref_var_create(tex, input_img); + tex->sampler = NULL; + + nir_ssa_dest_init(&tex->instr, &tex->dest, 4, 32, "tex"); + nir_builder_instr_insert(b, &tex->instr); + + tmp = &tex->dest.ssa; + + if (!is_integer && samples > 1) { + nir_tex_instr *tex_all_same = nir_tex_instr_create(b->shader, 1); + tex_all_same->sampler_dim = GLSL_SAMPLER_DIM_MS; + tex_all_same->op = nir_texop_samples_identical; + tex_all_same->src[0].src_type = nir_tex_src_coord; + tex_all_same->src[0].src = nir_src_for_ssa(img_coord); + tex_all_same->dest_type = nir_type_float; + tex_all_same->is_array = false; + tex_all_same->coord_components = 2; + tex_all_same->texture = nir_deref_var_create(tex_all_same, input_img); + tex_all_same->sampler = NULL; + + nir_ssa_dest_init(&tex_all_same->instr, &tex_all_same->dest, 1, 32, "tex"); + nir_builder_instr_insert(b, &tex_all_same->instr); + + nir_ssa_def *all_same = nir_ine(b, &tex_all_same->dest.ssa, nir_imm_int(b, 0)); + nir_if *if_stmt = nir_if_create(b->shader); + if_stmt->condition = nir_src_for_ssa(all_same); + nir_cf_node_insert(b->cursor, &if_stmt->cf_node); + + b->cursor = nir_after_cf_list(&if_stmt->then_list); + for (int i = 1; i < samples; i++) { + nir_tex_instr *tex_add = nir_tex_instr_create(b->shader, 2); + tex_add->sampler_dim = GLSL_SAMPLER_DIM_MS; + tex_add->op = nir_texop_txf_ms; + tex_add->src[0].src_type = nir_tex_src_coord; + tex_add->src[0].src = nir_src_for_ssa(img_coord); + tex_add->src[1].src_type = nir_tex_src_ms_index; + tex_add->src[1].src = nir_src_for_ssa(nir_imm_int(b, i)); + tex_add->dest_type = nir_type_float; + tex_add->is_array = false; + tex_add->coord_components = 2; + tex_add->texture = nir_deref_var_create(tex_add, input_img); + tex_add->sampler = NULL; + + nir_ssa_dest_init(&tex_add->instr, &tex_add->dest, 4, 32, "tex"); + nir_builder_instr_insert(b, &tex_add->instr); + + tmp = nir_fadd(b, tmp, &tex_add->dest.ssa); + } + + tmp = nir_fdiv(b, tmp, nir_imm_float(b, samples)); + nir_store_var(b, color, tmp, 0xf); + b->cursor = nir_after_cf_list(&if_stmt->else_list); + outer_if = if_stmt; + } + nir_store_var(b, color, &tex->dest.ssa, 0xf); + + if (outer_if) + b->cursor = nir_after_cf_node(&outer_if->cf_node); + + if (is_srgb) { + nir_ssa_def *newv = nir_load_var(b, color); + newv = radv_meta_build_resolve_srgb_conversion(b, newv); + nir_store_var(b, color, newv, 0xf); + } +} |