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Pica: Use a union for PicaShaderConfig
This commit is contained in:
Jannik Vogel
parent
5fc8eb227a
commit
f74652d2fe
@ -39,17 +39,24 @@ struct ScreenInfo;
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* directly accessing Pica registers. This should reduce the risk of bugs in shader generation where
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* Pica state is not being captured in the shader cache key, thereby resulting in (what should be)
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* two separate shaders sharing the same key.
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*
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* We use a union because "implicitly-defined copy/move constructor for a union X copies the object representation of X."
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* and "implicitly-defined copy assignment operator for a union X copies the object representation (3.9) of X."
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* = Bytewise copy instead of memberwise copy.
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* This is important because the padding bytes are included in the hash and comparison between objects.
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*/
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struct PicaShaderConfig {
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union PicaShaderConfig {
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/// Construct a PicaShaderConfig with the current Pica register configuration.
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static PicaShaderConfig CurrentConfig() {
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PicaShaderConfig res;
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std::memset(&res, 0, sizeof(PicaShaderConfig));
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auto& state = res.state;
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std::memset(&state, 0, sizeof(PicaShaderConfig::State));
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const auto& regs = Pica::g_state.regs;
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res.alpha_test_func = regs.output_merger.alpha_test.enable ?
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state.alpha_test_func = regs.output_merger.alpha_test.enable ?
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regs.output_merger.alpha_test.func.Value() : Pica::Regs::CompareFunc::Always;
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// Copy relevant tev stages fields.
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@ -59,86 +66,84 @@ struct PicaShaderConfig {
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DEBUG_ASSERT(res.tev_stages.size() == tev_stages.size());
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for (size_t i = 0; i < tev_stages.size(); i++) {
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const auto& tev_stage = tev_stages[i];
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res.tev_stages[i].sources_raw = tev_stage.sources_raw;
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res.tev_stages[i].modifiers_raw = tev_stage.modifiers_raw;
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res.tev_stages[i].ops_raw = tev_stage.ops_raw;
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res.tev_stages[i].scales_raw = tev_stage.scales_raw;
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state.tev_stages[i].sources_raw = tev_stage.sources_raw;
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state.tev_stages[i].modifiers_raw = tev_stage.modifiers_raw;
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state.tev_stages[i].ops_raw = tev_stage.ops_raw;
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state.tev_stages[i].scales_raw = tev_stage.scales_raw;
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}
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res.combiner_buffer_input =
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state.combiner_buffer_input =
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regs.tev_combiner_buffer_input.update_mask_rgb.Value() |
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regs.tev_combiner_buffer_input.update_mask_a.Value() << 4;
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// Fragment lighting
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res.lighting.enable = !regs.lighting.disable;
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res.lighting.src_num = regs.lighting.num_lights + 1;
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state.lighting.enable = !regs.lighting.disable;
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state.lighting.src_num = regs.lighting.num_lights + 1;
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for (unsigned light_index = 0; light_index < res.lighting.src_num; ++light_index) {
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for (unsigned light_index = 0; light_index < state.lighting.src_num; ++light_index) {
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unsigned num = regs.lighting.light_enable.GetNum(light_index);
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const auto& light = regs.lighting.light[num];
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res.lighting.light[light_index].num = num;
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res.lighting.light[light_index].directional = light.directional != 0;
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res.lighting.light[light_index].two_sided_diffuse = light.two_sided_diffuse != 0;
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res.lighting.light[light_index].dist_atten_enable = !regs.lighting.IsDistAttenDisabled(num);
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res.lighting.light[light_index].dist_atten_bias = Pica::float20::FromRaw(light.dist_atten_bias).ToFloat32();
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res.lighting.light[light_index].dist_atten_scale = Pica::float20::FromRaw(light.dist_atten_scale).ToFloat32();
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state.lighting.light[light_index].num = num;
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state.lighting.light[light_index].directional = light.directional != 0;
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state.lighting.light[light_index].two_sided_diffuse = light.two_sided_diffuse != 0;
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state.lighting.light[light_index].dist_atten_enable = !regs.lighting.IsDistAttenDisabled(num);
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state.lighting.light[light_index].dist_atten_bias = Pica::float20::FromRaw(light.dist_atten_bias).ToFloat32();
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state.lighting.light[light_index].dist_atten_scale = Pica::float20::FromRaw(light.dist_atten_scale).ToFloat32();
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}
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res.lighting.lut_d0.enable = regs.lighting.disable_lut_d0 == 0;
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res.lighting.lut_d0.abs_input = regs.lighting.abs_lut_input.disable_d0 == 0;
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res.lighting.lut_d0.type = regs.lighting.lut_input.d0.Value();
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res.lighting.lut_d0.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d0);
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state.lighting.lut_d0.enable = regs.lighting.disable_lut_d0 == 0;
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state.lighting.lut_d0.abs_input = regs.lighting.abs_lut_input.disable_d0 == 0;
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state.lighting.lut_d0.type = regs.lighting.lut_input.d0.Value();
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state.lighting.lut_d0.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d0);
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res.lighting.lut_d1.enable = regs.lighting.disable_lut_d1 == 0;
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res.lighting.lut_d1.abs_input = regs.lighting.abs_lut_input.disable_d1 == 0;
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res.lighting.lut_d1.type = regs.lighting.lut_input.d1.Value();
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res.lighting.lut_d1.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d1);
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state.lighting.lut_d1.enable = regs.lighting.disable_lut_d1 == 0;
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state.lighting.lut_d1.abs_input = regs.lighting.abs_lut_input.disable_d1 == 0;
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state.lighting.lut_d1.type = regs.lighting.lut_input.d1.Value();
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state.lighting.lut_d1.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d1);
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res.lighting.lut_fr.enable = regs.lighting.disable_lut_fr == 0;
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res.lighting.lut_fr.abs_input = regs.lighting.abs_lut_input.disable_fr == 0;
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res.lighting.lut_fr.type = regs.lighting.lut_input.fr.Value();
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res.lighting.lut_fr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.fr);
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state.lighting.lut_fr.enable = regs.lighting.disable_lut_fr == 0;
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state.lighting.lut_fr.abs_input = regs.lighting.abs_lut_input.disable_fr == 0;
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state.lighting.lut_fr.type = regs.lighting.lut_input.fr.Value();
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state.lighting.lut_fr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.fr);
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res.lighting.lut_rr.enable = regs.lighting.disable_lut_rr == 0;
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res.lighting.lut_rr.abs_input = regs.lighting.abs_lut_input.disable_rr == 0;
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res.lighting.lut_rr.type = regs.lighting.lut_input.rr.Value();
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res.lighting.lut_rr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rr);
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state.lighting.lut_rr.enable = regs.lighting.disable_lut_rr == 0;
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state.lighting.lut_rr.abs_input = regs.lighting.abs_lut_input.disable_rr == 0;
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state.lighting.lut_rr.type = regs.lighting.lut_input.rr.Value();
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state.lighting.lut_rr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rr);
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res.lighting.lut_rg.enable = regs.lighting.disable_lut_rg == 0;
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res.lighting.lut_rg.abs_input = regs.lighting.abs_lut_input.disable_rg == 0;
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res.lighting.lut_rg.type = regs.lighting.lut_input.rg.Value();
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res.lighting.lut_rg.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rg);
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state.lighting.lut_rg.enable = regs.lighting.disable_lut_rg == 0;
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state.lighting.lut_rg.abs_input = regs.lighting.abs_lut_input.disable_rg == 0;
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state.lighting.lut_rg.type = regs.lighting.lut_input.rg.Value();
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state.lighting.lut_rg.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rg);
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res.lighting.lut_rb.enable = regs.lighting.disable_lut_rb == 0;
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res.lighting.lut_rb.abs_input = regs.lighting.abs_lut_input.disable_rb == 0;
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res.lighting.lut_rb.type = regs.lighting.lut_input.rb.Value();
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res.lighting.lut_rb.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rb);
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state.lighting.lut_rb.enable = regs.lighting.disable_lut_rb == 0;
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state.lighting.lut_rb.abs_input = regs.lighting.abs_lut_input.disable_rb == 0;
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state.lighting.lut_rb.type = regs.lighting.lut_input.rb.Value();
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state.lighting.lut_rb.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rb);
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res.lighting.config = regs.lighting.config;
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res.lighting.fresnel_selector = regs.lighting.fresnel_selector;
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res.lighting.bump_mode = regs.lighting.bump_mode;
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res.lighting.bump_selector = regs.lighting.bump_selector;
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res.lighting.bump_renorm = regs.lighting.disable_bump_renorm == 0;
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res.lighting.clamp_highlights = regs.lighting.clamp_highlights != 0;
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state.lighting.config = regs.lighting.config;
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state.lighting.fresnel_selector = regs.lighting.fresnel_selector;
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state.lighting.bump_mode = regs.lighting.bump_mode;
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state.lighting.bump_selector = regs.lighting.bump_selector;
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state.lighting.bump_renorm = regs.lighting.disable_bump_renorm == 0;
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state.lighting.clamp_highlights = regs.lighting.clamp_highlights != 0;
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return res;
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}
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bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const {
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return (stage_index < 4) && (combiner_buffer_input & (1 << stage_index));
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return (stage_index < 4) && (state.combiner_buffer_input & (1 << stage_index));
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}
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bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const {
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return (stage_index < 4) && ((combiner_buffer_input >> 4) & (1 << stage_index));
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return (stage_index < 4) && ((state.combiner_buffer_input >> 4) & (1 << stage_index));
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}
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bool operator ==(const PicaShaderConfig& o) const {
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return std::memcmp(this, &o, sizeof(PicaShaderConfig)) == 0;
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return std::memcmp(&state, &o.state, sizeof(PicaShaderConfig::State)) == 0;
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};
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Pica::Regs::CompareFunc alpha_test_func;
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// NOTE: MSVC15 (Update 2) doesn't think `delete`'d constructors and operators are TC.
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// This makes BitField not TC when used in a union or struct so we have to resort
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// to this ugly hack.
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@ -159,40 +164,45 @@ struct PicaShaderConfig {
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return stage;
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}
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};
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std::array<TevStageConfigRaw, 6> tev_stages;
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u8 combiner_buffer_input;
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struct {
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struct {
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unsigned num;
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bool directional;
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bool two_sided_diffuse;
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bool dist_atten_enable;
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GLfloat dist_atten_scale;
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GLfloat dist_atten_bias;
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} light[8];
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struct State {
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bool enable;
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unsigned src_num;
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Pica::Regs::LightingBumpMode bump_mode;
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unsigned bump_selector;
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bool bump_renorm;
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bool clamp_highlights;
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Pica::Regs::LightingConfig config;
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Pica::Regs::LightingFresnelSelector fresnel_selector;
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Pica::Regs::CompareFunc alpha_test_func;
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std::array<TevStageConfigRaw, 6> tev_stages;
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u8 combiner_buffer_input;
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struct {
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struct {
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unsigned num;
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bool directional;
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bool two_sided_diffuse;
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bool dist_atten_enable;
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GLfloat dist_atten_scale;
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GLfloat dist_atten_bias;
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} light[8];
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bool enable;
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bool abs_input;
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Pica::Regs::LightingLutInput type;
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float scale;
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} lut_d0, lut_d1, lut_fr, lut_rr, lut_rg, lut_rb;
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} lighting;
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unsigned src_num;
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Pica::Regs::LightingBumpMode bump_mode;
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unsigned bump_selector;
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bool bump_renorm;
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bool clamp_highlights;
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Pica::Regs::LightingConfig config;
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Pica::Regs::LightingFresnelSelector fresnel_selector;
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struct {
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bool enable;
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bool abs_input;
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Pica::Regs::LightingLutInput type;
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float scale;
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} lut_d0, lut_d1, lut_fr, lut_rr, lut_rg, lut_rb;
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} lighting;
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} state;
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};
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#if (__GNUC__ >= 5) || defined(__clang__) || defined(_MSC_VER)
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static_assert(std::is_trivially_copyable<PicaShaderConfig>::value, "PicaShaderConfig must be trivially copyable");
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static_assert(std::is_trivially_copyable<PicaShaderConfig::State>::value, "PicaShaderConfig::State must be trivially copyable");
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#endif
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namespace std {
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@ -200,7 +210,7 @@ namespace std {
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template <>
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struct hash<PicaShaderConfig> {
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size_t operator()(const PicaShaderConfig& k) const {
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return Common::ComputeHash64(&k, sizeof(PicaShaderConfig));
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return Common::ComputeHash64(&k.state, sizeof(PicaShaderConfig::State));
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}
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};
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@ -287,7 +287,7 @@ static void AppendAlphaTestCondition(std::string& out, Regs::CompareFunc func) {
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/// Writes the code to emulate the specified TEV stage
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static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsigned index) {
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const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.tev_stages[index]);
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const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.state.tev_stages[index]);
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if (!IsPassThroughTevStage(stage)) {
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std::string index_name = std::to_string(index);
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@ -331,6 +331,8 @@ static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsi
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/// Writes the code to emulate fragment lighting
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static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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const auto& lighting = config.state.lighting;
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// Define lighting globals
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out += "vec4 diffuse_sum = vec4(0.0, 0.0, 0.0, 1.0);\n"
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"vec4 specular_sum = vec4(0.0, 0.0, 0.0, 1.0);\n"
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@ -338,17 +340,17 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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"vec3 refl_value = vec3(0.0);\n";
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// Compute fragment normals
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if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) {
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if (lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) {
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// Bump mapping is enabled using a normal map, read perturbation vector from the selected texture
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std::string bump_selector = std::to_string(config.lighting.bump_selector);
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std::string bump_selector = std::to_string(lighting.bump_selector);
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out += "vec3 surface_normal = 2.0 * texture(tex[" + bump_selector + "], texcoord[" + bump_selector + "]).rgb - 1.0;\n";
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// Recompute Z-component of perturbation if 'renorm' is enabled, this provides a higher precision result
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if (config.lighting.bump_renorm) {
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if (lighting.bump_renorm) {
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std::string val = "(1.0 - (surface_normal.x*surface_normal.x + surface_normal.y*surface_normal.y))";
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out += "surface_normal.z = sqrt(max(" + val + ", 0.0));\n";
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}
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} else if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) {
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} else if (lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) {
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// Bump mapping is enabled using a tangent map
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LOG_CRITICAL(HW_GPU, "unimplemented bump mapping mode (tangent mapping)");
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UNIMPLEMENTED();
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@ -361,7 +363,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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out += "vec3 normal = normalize(quaternion_rotate(normquat, surface_normal));\n";
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// Gets the index into the specified lookup table for specular lighting
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auto GetLutIndex = [config](unsigned light_num, Regs::LightingLutInput input, bool abs) {
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auto GetLutIndex = [&lighting](unsigned light_num, Regs::LightingLutInput input, bool abs) {
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const std::string half_angle = "normalize(normalize(view) + light_vector)";
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std::string index;
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switch (input) {
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@ -389,7 +391,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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if (abs) {
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// LUT index is in the range of (0.0, 1.0)
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index = config.lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)";
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index = lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)";
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return "(FLOAT_255 * clamp(" + index + ", 0.0, 1.0))";
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} else {
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// LUT index is in the range of (-1.0, 1.0)
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@ -407,8 +409,8 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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};
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// Write the code to emulate each enabled light
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for (unsigned light_index = 0; light_index < config.lighting.src_num; ++light_index) {
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const auto& light_config = config.lighting.light[light_index];
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for (unsigned light_index = 0; light_index < lighting.src_num; ++light_index) {
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const auto& light_config = lighting.light[light_index];
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std::string light_src = "light_src[" + std::to_string(light_config.num) + "]";
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// Compute light vector (directional or positional)
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@ -432,39 +434,39 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
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}
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// If enabled, clamp specular component if lighting result is negative
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std::string clamp_highlights = config.lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0";
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std::string clamp_highlights = lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0";
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// Specular 0 component
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std::string d0_lut_value = "1.0";
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if (config.lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Distribution0)) {
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if (lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Distribution0)) {
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// Lookup specular "distribution 0" LUT value
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std::string index = GetLutIndex(light_config.num, config.lighting.lut_d0.type, config.lighting.lut_d0.abs_input);
|
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d0_lut_value = "(" + std::to_string(config.lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, index) + ")";
|
||||
std::string index = GetLutIndex(light_config.num, lighting.lut_d0.type, lighting.lut_d0.abs_input);
|
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d0_lut_value = "(" + std::to_string(lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, index) + ")";
|
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}
|
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std::string specular_0 = "(" + d0_lut_value + " * " + light_src + ".specular_0)";
|
||||
|
||||
// If enabled, lookup ReflectRed value, otherwise, 1.0 is used
|
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if (config.lighting.lut_rr.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectRed)) {
|
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std::string index = GetLutIndex(light_config.num, config.lighting.lut_rr.type, config.lighting.lut_rr.abs_input);
|
||||
std::string value = "(" + std::to_string(config.lighting.lut_rr.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectRed, index) + ")";
|
||||
if (lighting.lut_rr.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectRed)) {
|
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std::string index = GetLutIndex(light_config.num, lighting.lut_rr.type, lighting.lut_rr.abs_input);
|
||||
std::string value = "(" + std::to_string(lighting.lut_rr.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectRed, index) + ")";
|
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out += "refl_value.r = " + value + ";\n";
|
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} else {
|
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out += "refl_value.r = 1.0;\n";
|
||||
}
|
||||
|
||||
// If enabled, lookup ReflectGreen value, otherwise, ReflectRed value is used
|
||||
if (config.lighting.lut_rg.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectGreen)) {
|
||||
std::string index = GetLutIndex(light_config.num, config.lighting.lut_rg.type, config.lighting.lut_rg.abs_input);
|
||||
std::string value = "(" + std::to_string(config.lighting.lut_rg.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectGreen, index) + ")";
|
||||
if (lighting.lut_rg.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectGreen)) {
|
||||
std::string index = GetLutIndex(light_config.num, lighting.lut_rg.type, lighting.lut_rg.abs_input);
|
||||
std::string value = "(" + std::to_string(lighting.lut_rg.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectGreen, index) + ")";
|
||||
out += "refl_value.g = " + value + ";\n";
|
||||
} else {
|
||||
out += "refl_value.g = refl_value.r;\n";
|
||||
}
|
||||
|
||||
// If enabled, lookup ReflectBlue value, otherwise, ReflectRed value is used
|
||||
if (config.lighting.lut_rb.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectBlue)) {
|
||||
std::string index = GetLutIndex(light_config.num, config.lighting.lut_rb.type, config.lighting.lut_rb.abs_input);
|
||||
std::string value = "(" + std::to_string(config.lighting.lut_rb.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectBlue, index) + ")";
|
||||
if (lighting.lut_rb.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectBlue)) {
|
||||
std::string index = GetLutIndex(light_config.num, lighting.lut_rb.type, lighting.lut_rb.abs_input);
|
||||
std::string value = "(" + std::to_string(lighting.lut_rb.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectBlue, index) + ")";
|
||||
out += "refl_value.b = " + value + ";\n";
|
||||
} else {
|
||||
out += "refl_value.b = refl_value.r;\n";
|
||||
@ -472,27 +474,27 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
|
||||
|
||||
// Specular 1 component
|
||||
std::string d1_lut_value = "1.0";
|
||||
if (config.lighting.lut_d1.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Distribution1)) {
|
||||
if (lighting.lut_d1.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Distribution1)) {
|
||||
// Lookup specular "distribution 1" LUT value
|
||||
std::string index = GetLutIndex(light_config.num, config.lighting.lut_d1.type, config.lighting.lut_d1.abs_input);
|
||||
d1_lut_value = "(" + std::to_string(config.lighting.lut_d1.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution1, index) + ")";
|
||||
std::string index = GetLutIndex(light_config.num, lighting.lut_d1.type, lighting.lut_d1.abs_input);
|
||||
d1_lut_value = "(" + std::to_string(lighting.lut_d1.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution1, index) + ")";
|
||||
}
|
||||
std::string specular_1 = "(" + d1_lut_value + " * refl_value * " + light_src + ".specular_1)";
|
||||
|
||||
// Fresnel
|
||||
if (config.lighting.lut_fr.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Fresnel)) {
|
||||
if (lighting.lut_fr.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Fresnel)) {
|
||||
// Lookup fresnel LUT value
|
||||
std::string index = GetLutIndex(light_config.num, config.lighting.lut_fr.type, config.lighting.lut_fr.abs_input);
|
||||
std::string value = "(" + std::to_string(config.lighting.lut_fr.scale) + " * " + GetLutValue(Regs::LightingSampler::Fresnel, index) + ")";
|
||||
std::string index = GetLutIndex(light_config.num, lighting.lut_fr.type, lighting.lut_fr.abs_input);
|
||||
std::string value = "(" + std::to_string(lighting.lut_fr.scale) + " * " + GetLutValue(Regs::LightingSampler::Fresnel, index) + ")";
|
||||
|
||||
// Enabled for difffuse lighting alpha component
|
||||
if (config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::PrimaryAlpha ||
|
||||
config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
|
||||
if (lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::PrimaryAlpha ||
|
||||
lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
|
||||
out += "diffuse_sum.a *= " + value + ";\n";
|
||||
|
||||
// Enabled for the specular lighting alpha component
|
||||
if (config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::SecondaryAlpha ||
|
||||
config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
|
||||
if (lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::SecondaryAlpha ||
|
||||
lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
|
||||
out += "specular_sum.a *= " + value + ";\n";
|
||||
}
|
||||
|
||||
@ -510,6 +512,8 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
|
||||
}
|
||||
|
||||
std::string GenerateFragmentShader(const PicaShaderConfig& config) {
|
||||
const auto& state = config.state;
|
||||
|
||||
std::string out = R"(
|
||||
#version 330 core
|
||||
#define NUM_TEV_STAGES 6
|
||||
@ -555,24 +559,24 @@ vec4 secondary_fragment_color = vec4(0.0);
|
||||
)";
|
||||
|
||||
// Do not do any sort of processing if it's obvious we're not going to pass the alpha test
|
||||
if (config.alpha_test_func == Regs::CompareFunc::Never) {
|
||||
if (state.alpha_test_func == Regs::CompareFunc::Never) {
|
||||
out += "discard; }";
|
||||
return out;
|
||||
}
|
||||
|
||||
if (config.lighting.enable)
|
||||
if (state.lighting.enable)
|
||||
WriteLighting(out, config);
|
||||
|
||||
out += "vec4 combiner_buffer = vec4(0.0);\n";
|
||||
out += "vec4 next_combiner_buffer = tev_combiner_buffer_color;\n";
|
||||
out += "vec4 last_tex_env_out = vec4(0.0);\n";
|
||||
|
||||
for (size_t index = 0; index < config.tev_stages.size(); ++index)
|
||||
for (size_t index = 0; index < state.tev_stages.size(); ++index)
|
||||
WriteTevStage(out, config, (unsigned)index);
|
||||
|
||||
if (config.alpha_test_func != Regs::CompareFunc::Always) {
|
||||
if (state.alpha_test_func != Regs::CompareFunc::Always) {
|
||||
out += "if (";
|
||||
AppendAlphaTestCondition(out, config.alpha_test_func);
|
||||
AppendAlphaTestCondition(out, state.alpha_test_func);
|
||||
out += ") discard;\n";
|
||||
}
|
||||
|
||||
|
||||
@ -6,7 +6,7 @@
|
||||
|
||||
#include <string>
|
||||
|
||||
struct PicaShaderConfig;
|
||||
union PicaShaderConfig;
|
||||
|
||||
namespace GLShader {
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user