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author | Jannik Vogel <email@jannikvogel.de> | 2016-05-01 23:28:39 +0200 |
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committer | Jannik Vogel <email@jannikvogel.de> | 2016-05-03 15:06:49 +0200 |
commit | f74652d2fe0f1b10ad15066bacd47c9ba00bed09 (patch) | |
tree | 7daff755ec132058f63df4754daac870210dcbc5 /src/video_core/renderer_opengl/gl_shader_gen.cpp | |
parent | Pica: Add TevStageConfigRaw to PicaShaderConfig (MSVC workaround) (diff) | |
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Diffstat (limited to 'src/video_core/renderer_opengl/gl_shader_gen.cpp')
-rw-r--r-- | src/video_core/renderer_opengl/gl_shader_gen.cpp | 78 |
1 files changed, 41 insertions, 37 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp index 51984389c..0890adb12 100644 --- a/src/video_core/renderer_opengl/gl_shader_gen.cpp +++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp @@ -287,7 +287,7 @@ static void AppendAlphaTestCondition(std::string& out, Regs::CompareFunc func) { /// Writes the code to emulate the specified TEV stage static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsigned index) { - const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.tev_stages[index]); + const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.state.tev_stages[index]); if (!IsPassThroughTevStage(stage)) { std::string index_name = std::to_string(index); @@ -331,6 +331,8 @@ static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsi /// Writes the code to emulate fragment lighting static void WriteLighting(std::string& out, const PicaShaderConfig& config) { + const auto& lighting = config.state.lighting; + // Define lighting globals out += "vec4 diffuse_sum = vec4(0.0, 0.0, 0.0, 1.0);\n" "vec4 specular_sum = vec4(0.0, 0.0, 0.0, 1.0);\n" @@ -338,17 +340,17 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) { "vec3 refl_value = vec3(0.0);\n"; // Compute fragment normals - if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) { + if (lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) { // Bump mapping is enabled using a normal map, read perturbation vector from the selected texture - std::string bump_selector = std::to_string(config.lighting.bump_selector); + std::string bump_selector = std::to_string(lighting.bump_selector); out += "vec3 surface_normal = 2.0 * texture(tex[" + bump_selector + "], texcoord[" + bump_selector + "]).rgb - 1.0;\n"; // Recompute Z-component of perturbation if 'renorm' is enabled, this provides a higher precision result - if (config.lighting.bump_renorm) { + if (lighting.bump_renorm) { std::string val = "(1.0 - (surface_normal.x*surface_normal.x + surface_normal.y*surface_normal.y))"; out += "surface_normal.z = sqrt(max(" + val + ", 0.0));\n"; } - } else if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) { + } else if (lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) { // Bump mapping is enabled using a tangent map LOG_CRITICAL(HW_GPU, "unimplemented bump mapping mode (tangent mapping)"); UNIMPLEMENTED(); @@ -361,7 +363,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) { out += "vec3 normal = normalize(quaternion_rotate(normquat, surface_normal));\n"; // Gets the index into the specified lookup table for specular lighting - auto GetLutIndex = [config](unsigned light_num, Regs::LightingLutInput input, bool abs) { + auto GetLutIndex = [&lighting](unsigned light_num, Regs::LightingLutInput input, bool abs) { const std::string half_angle = "normalize(normalize(view) + light_vector)"; std::string index; switch (input) { @@ -389,7 +391,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) { if (abs) { // LUT index is in the range of (0.0, 1.0) - index = config.lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)"; + index = lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)"; return "(FLOAT_255 * clamp(" + index + ", 0.0, 1.0))"; } else { // LUT index is in the range of (-1.0, 1.0) @@ -407,8 +409,8 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) { }; // Write the code to emulate each enabled light - for (unsigned light_index = 0; light_index < config.lighting.src_num; ++light_index) { - const auto& light_config = config.lighting.light[light_index]; + for (unsigned light_index = 0; light_index < lighting.src_num; ++light_index) { + const auto& light_config = lighting.light[light_index]; std::string light_src = "light_src[" + std::to_string(light_config.num) + "]"; // Compute light vector (directional or positional) @@ -432,39 +434,39 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) { } // If enabled, clamp specular component if lighting result is negative - std::string clamp_highlights = config.lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0"; + std::string clamp_highlights = lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0"; // Specular 0 component std::string d0_lut_value = "1.0"; - if (config.lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Distribution0)) { + if (lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Distribution0)) { // Lookup specular "distribution 0" LUT value - std::string index = GetLutIndex(light_config.num, config.lighting.lut_d0.type, config.lighting.lut_d0.abs_input); - 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); + d0_lut_value = "(" + std::to_string(lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, index) + ")"; } std::string specular_0 = "(" + d0_lut_value + " * " + light_src + ".specular_0)"; // If enabled, lookup ReflectRed value, otherwise, 1.0 is used - if (config.lighting.lut_rr.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectRed)) { - 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)) { + 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) + ")"; out += "refl_value.r = " + value + ";\n"; } else { 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"; } |