From a74774257eafd37f2efae5b745930c3950a3aa04 Mon Sep 17 00:00:00 2001 From: bunnei Date: Tue, 6 Oct 2015 18:01:53 -0400 Subject: [PATCH] gl_shader_gen: Various cleanups + moved TEV stage generation to its own function. --- .../renderer_opengl/gl_shader_gen.cpp | 329 +++++++++--------- 1 file changed, 169 insertions(+), 160 deletions(-) diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp index 059f127af5..4854c347ea 100644 --- a/src/video_core/renderer_opengl/gl_shader_gen.cpp +++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp @@ -6,268 +6,313 @@ #include "video_core/renderer_opengl/gl_rasterizer.h" #include "video_core/renderer_opengl/gl_shader_gen.h" +using Pica::Regs; +using TevStageConfig = Regs::TevStageConfig; + namespace GLShader { -static bool IsPassThroughTevStage(const Pica::Regs::TevStageConfig& stage) { - return (stage.color_op == Pica::Regs::TevStageConfig::Operation::Replace && - stage.alpha_op == Pica::Regs::TevStageConfig::Operation::Replace && - stage.color_source1 == Pica::Regs::TevStageConfig::Source::Previous && - stage.alpha_source1 == Pica::Regs::TevStageConfig::Source::Previous && - stage.color_modifier1 == Pica::Regs::TevStageConfig::ColorModifier::SourceColor && - stage.alpha_modifier1 == Pica::Regs::TevStageConfig::AlphaModifier::SourceAlpha && - stage.GetColorMultiplier() == 1 && - stage.GetAlphaMultiplier() == 1); +static bool IsPassThroughTevStage(const TevStageConfig& stage) { + return (stage.color_op == TevStageConfig::Operation::Replace && + stage.alpha_op == TevStageConfig::Operation::Replace && + stage.color_source1 == TevStageConfig::Source::Previous && + stage.alpha_source1 == TevStageConfig::Source::Previous && + stage.color_modifier1 == TevStageConfig::ColorModifier::SourceColor && + stage.alpha_modifier1 == TevStageConfig::AlphaModifier::SourceAlpha && + stage.GetColorMultiplier() == 1 && + stage.GetAlphaMultiplier() == 1); } -static void AppendSource(std::string& shader, Pica::Regs::TevStageConfig::Source source, const std::string& index_name) { - using Source = Pica::Regs::TevStageConfig::Source; +static void AppendSource(std::string& out, TevStageConfig::Source source, + const std::string& index_name) { + using Source = TevStageConfig::Source; switch (source) { case Source::PrimaryColor: - shader += "o[2]"; + out += "o[2]"; break; case Source::PrimaryFragmentColor: // HACK: Until we implement fragment lighting, use primary_color - shader += "o[2]"; + out += "o[2]"; break; case Source::SecondaryFragmentColor: // HACK: Until we implement fragment lighting, use zero - shader += "vec4(0.0, 0.0, 0.0, 0.0)"; + out += "vec4(0.0, 0.0, 0.0, 0.0)"; break; case Source::Texture0: - shader += "texture(tex[0], o[3].xy)"; + out += "texture(tex[0], o[3].xy)"; break; case Source::Texture1: - shader += "texture(tex[1], o[3].zw)"; + out += "texture(tex[1], o[3].zw)"; break; case Source::Texture2: // TODO: Unverified - shader += "texture(tex[2], o[5].zw)"; + out += "texture(tex[2], o[5].zw)"; break; case Source::PreviousBuffer: - shader += "g_combiner_buffer"; + out += "g_combiner_buffer"; break; case Source::Constant: - shader += "const_color[" + index_name + "]"; + out += "const_color[" + index_name + "]"; break; case Source::Previous: - shader += "g_last_tex_env_out"; + out += "g_last_tex_env_out"; break; default: - shader += "vec4(0.0)"; + out += "vec4(0.0)"; LOG_CRITICAL(Render_OpenGL, "Unknown source op %u", source); break; } } -static void AppendColorModifier(std::string& shader, Pica::Regs::TevStageConfig::ColorModifier modifier, - Pica::Regs::TevStageConfig::Source source, const std::string& index_name) { - using ColorModifier = Pica::Regs::TevStageConfig::ColorModifier; +static void AppendColorModifier(std::string& out, TevStageConfig::ColorModifier modifier, + TevStageConfig::Source source, const std::string& index_name) { + using ColorModifier = TevStageConfig::ColorModifier; switch (modifier) { case ColorModifier::SourceColor: - AppendSource(shader, source, index_name); - shader += ".rgb"; + AppendSource(out, source, index_name); + out += ".rgb"; break; case ColorModifier::OneMinusSourceColor: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".rgb"; + out += "vec3(1.0) - "; + AppendSource(out, source, index_name); + out += ".rgb"; break; case ColorModifier::SourceAlpha: - AppendSource(shader, source, index_name); - shader += ".aaa"; + AppendSource(out, source, index_name); + out += ".aaa"; break; case ColorModifier::OneMinusSourceAlpha: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".aaa"; + out += "vec3(1.0) - "; + AppendSource(out, source, index_name); + out += ".aaa"; break; case ColorModifier::SourceRed: - AppendSource(shader, source, index_name); - shader += ".rrr"; + AppendSource(out, source, index_name); + out += ".rrr"; break; case ColorModifier::OneMinusSourceRed: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".rrr"; + out += "vec3(1.0) - "; + AppendSource(out, source, index_name); + out += ".rrr"; break; case ColorModifier::SourceGreen: - AppendSource(shader, source, index_name); - shader += ".ggg"; + AppendSource(out, source, index_name); + out += ".ggg"; break; case ColorModifier::OneMinusSourceGreen: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".ggg"; + out += "vec3(1.0) - "; + AppendSource(out, source, index_name); + out += ".ggg"; break; case ColorModifier::SourceBlue: - AppendSource(shader, source, index_name); - shader += ".bbb"; + AppendSource(out, source, index_name); + out += ".bbb"; break; case ColorModifier::OneMinusSourceBlue: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".bbb"; + out += "vec3(1.0) - "; + AppendSource(out, source, index_name); + out += ".bbb"; break; default: - shader += "vec3(0.0)"; + out += "vec3(0.0)"; LOG_CRITICAL(Render_OpenGL, "Unknown color modifier op %u", modifier); break; } } -static void AppendAlphaModifier(std::string& shader, Pica::Regs::TevStageConfig::AlphaModifier modifier, - Pica::Regs::TevStageConfig::Source source, const std::string& index_name) { - using AlphaModifier = Pica::Regs::TevStageConfig::AlphaModifier; +static void AppendAlphaModifier(std::string& out, TevStageConfig::AlphaModifier modifier, + TevStageConfig::Source source, const std::string& index_name) { + using AlphaModifier = TevStageConfig::AlphaModifier; switch (modifier) { case AlphaModifier::SourceAlpha: - AppendSource(shader, source, index_name); - shader += ".a"; + AppendSource(out, source, index_name); + out += ".a"; break; case AlphaModifier::OneMinusSourceAlpha: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".a"; + out += "1.0 - "; + AppendSource(out, source, index_name); + out += ".a"; break; case AlphaModifier::SourceRed: - AppendSource(shader, source, index_name); - shader += ".r"; + AppendSource(out, source, index_name); + out += ".r"; break; case AlphaModifier::OneMinusSourceRed: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".r"; + out += "1.0 - "; + AppendSource(out, source, index_name); + out += ".r"; break; case AlphaModifier::SourceGreen: - AppendSource(shader, source, index_name); - shader += ".g"; + AppendSource(out, source, index_name); + out += ".g"; break; case AlphaModifier::OneMinusSourceGreen: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".g"; + out += "1.0 - "; + AppendSource(out, source, index_name); + out += ".g"; break; case AlphaModifier::SourceBlue: - AppendSource(shader, source, index_name); - shader += ".b"; + AppendSource(out, source, index_name); + out += ".b"; break; case AlphaModifier::OneMinusSourceBlue: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".b"; + out += "1.0 - "; + AppendSource(out, source, index_name); + out += ".b"; break; default: - shader += "vec3(0.0)"; + out += "vec3(0.0)"; LOG_CRITICAL(Render_OpenGL, "Unknown alpha modifier op %u", modifier); break; } } -static void AppendColorCombiner(std::string& shader, Pica::Regs::TevStageConfig::Operation operation, +static void AppendColorCombiner(std::string& out, TevStageConfig::Operation operation, const std::string& variable_name) { - using Operation = Pica::Regs::TevStageConfig::Operation; + using Operation = TevStageConfig::Operation; switch (operation) { case Operation::Replace: - shader += variable_name + "[0]"; + out += variable_name + "[0]"; break; case Operation::Modulate: - shader += variable_name + "[0] * " + variable_name + "[1]"; + out += variable_name + "[0] * " + variable_name + "[1]"; break; case Operation::Add: - shader += "min(" + variable_name + "[0] + " + variable_name + "[1], vec3(1.0))"; + out += "min(" + variable_name + "[0] + " + variable_name + "[1], vec3(1.0))"; break; case Operation::AddSigned: - shader += "clamp(" + variable_name + "[0] + " + variable_name + "[1] - vec3(0.5), vec3(0.0), vec3(1.0))"; + out += "clamp(" + variable_name + "[0] + " + variable_name + "[1] - vec3(0.5), vec3(0.0), vec3(1.0))"; break; case Operation::Lerp: - shader += variable_name + "[0] * " + variable_name + "[2] + " + variable_name + "[1] * (vec3(1.0) - " + variable_name + "[2])"; + out += variable_name + "[0] * " + variable_name + "[2] + " + variable_name + "[1] * (vec3(1.0) - " + variable_name + "[2])"; break; case Operation::Subtract: - shader += "max(" + variable_name + "[0] - " + variable_name + "[1], vec3(0.0))"; + out += "max(" + variable_name + "[0] - " + variable_name + "[1], vec3(0.0))"; break; case Operation::MultiplyThenAdd: - shader += "min(" + variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2], vec3(1.0))"; + out += "min(" + variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2], vec3(1.0))"; break; case Operation::AddThenMultiply: - shader += "min(" + variable_name + "[0] + " + variable_name + "[1], vec3(1.0)) * " + variable_name + "[2]"; + out += "min(" + variable_name + "[0] + " + variable_name + "[1], vec3(1.0)) * " + variable_name + "[2]"; break; default: - shader += "vec3(0.0)"; - LOG_CRITICAL(Render_OpenGL, "Unknown color comb op %u", operation); + out += "vec3(0.0)"; + LOG_CRITICAL(Render_OpenGL, "Unknown color combiner operation: %u", operation); break; } } -static void AppendAlphaCombiner(std::string& shader, Pica::Regs::TevStageConfig::Operation operation, +static void AppendAlphaCombiner(std::string& out, TevStageConfig::Operation operation, const std::string& variable_name) { - using Operation = Pica::Regs::TevStageConfig::Operation; + using Operation = TevStageConfig::Operation; switch (operation) { case Operation::Replace: - shader += variable_name + "[0]"; + out += variable_name + "[0]"; break; case Operation::Modulate: - shader += variable_name + "[0] * " + variable_name + "[1]"; + out += variable_name + "[0] * " + variable_name + "[1]"; break; case Operation::Add: - shader += "min(" + variable_name + "[0] + " + variable_name + "[1], 1.0)"; + out += "min(" + variable_name + "[0] + " + variable_name + "[1], 1.0)"; break; case Operation::AddSigned: - shader += "clamp(" + variable_name + "[0] + " + variable_name + "[1] - 0.5, 0.0, 1.0)"; + out += "clamp(" + variable_name + "[0] + " + variable_name + "[1] - 0.5, 0.0, 1.0)"; break; case Operation::Lerp: - shader += variable_name + "[0] * " + variable_name + "[2] + " + variable_name + "[1] * (1.0 - " + variable_name + "[2])"; + out += variable_name + "[0] * " + variable_name + "[2] + " + variable_name + "[1] * (1.0 - " + variable_name + "[2])"; break; case Operation::Subtract: - shader += "max(" + variable_name + "[0] - " + variable_name + "[1], 0.0)"; + out += "max(" + variable_name + "[0] - " + variable_name + "[1], 0.0)"; break; case Operation::MultiplyThenAdd: - shader += "min(" + variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2], 1.0)"; + out += "min(" + variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2], 1.0)"; break; case Operation::AddThenMultiply: - shader += "min(" + variable_name + "[0] + " + variable_name + "[1], 1.0) * " + variable_name + "[2]"; + out += "min(" + variable_name + "[0] + " + variable_name + "[1], 1.0) * " + variable_name + "[2]"; break; default: - shader += "0.0"; - LOG_CRITICAL(Render_OpenGL, "Unknown alpha combiner op %u", operation); + out += "0.0"; + LOG_CRITICAL(Render_OpenGL, "Unknown alpha combiner operation: %u", operation); break; } } -static void AppendAlphaTestCondition(std::string& shader, Pica::Regs::CompareFunc func) { - using CompareFunc = Pica::Regs::CompareFunc; +static void AppendAlphaTestCondition(std::string& out, Regs::CompareFunc func) { + using CompareFunc = Regs::CompareFunc; switch (func) { case CompareFunc::Never: - shader += "true"; + out += "true"; break; case CompareFunc::Always: - shader += "false"; + out += "false"; break; case CompareFunc::Equal: - shader += "int(g_last_tex_env_out.a * 255.0f) != alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) != alphatest_ref"; break; case CompareFunc::NotEqual: - shader += "int(g_last_tex_env_out.a * 255.0f) == alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) == alphatest_ref"; break; case CompareFunc::LessThan: - shader += "int(g_last_tex_env_out.a * 255.0f) >= alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) >= alphatest_ref"; break; case CompareFunc::LessThanOrEqual: - shader += "int(g_last_tex_env_out.a * 255.0f) > alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) > alphatest_ref"; break; case CompareFunc::GreaterThan: - shader += "int(g_last_tex_env_out.a * 255.0f) <= alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) <= alphatest_ref"; break; case CompareFunc::GreaterThanOrEqual: - shader += "int(g_last_tex_env_out.a * 255.0f) < alphatest_ref"; + out += "int(g_last_tex_env_out.a * 255.0f) < alphatest_ref"; break; default: - shader += "false"; + out += "false"; LOG_CRITICAL(Render_OpenGL, "Unknown alpha test condition %u", func); break; } } +static void WriteTevStage(std::string& out, const ShaderCacheKey& config, unsigned index) { + auto& stage = config.tev_stages[index]; + if (!IsPassThroughTevStage(stage)) { + std::string index_name = std::to_string(index); + + out += "vec3 color_results_" + index_name + "[3] = vec3[3]("; + AppendColorModifier(out, stage.color_modifier1, stage.color_source1, index_name); + out += ", "; + AppendColorModifier(out, stage.color_modifier2, stage.color_source2, index_name); + out += ", "; + AppendColorModifier(out, stage.color_modifier3, stage.color_source3, index_name); + out += ");\n"; + + out += "vec3 color_output_" + index_name + " = "; + AppendColorCombiner(out, stage.color_op, "color_results_" + index_name); + out += ";\n"; + + out += "float alpha_results_" + index_name + "[3] = float[3]("; + AppendAlphaModifier(out, stage.alpha_modifier1, stage.alpha_source1, index_name); + out += ", "; + AppendAlphaModifier(out, stage.alpha_modifier2, stage.alpha_source2, index_name); + out += ", "; + AppendAlphaModifier(out, stage.alpha_modifier3, stage.alpha_source3, index_name); + out += ");\n"; + + out += "float alpha_output_" + index_name + " = "; + AppendAlphaCombiner(out, stage.alpha_op, "alpha_results_" + index_name); + out += ";\n"; + + out += "g_last_tex_env_out = vec4(min(color_output_" + index_name + " * " + + std::to_string(stage.GetColorMultiplier()) + ".0, 1.0), min(alpha_output_" + index_name + " * " + + std::to_string(stage.GetAlphaMultiplier()) + ".0, 1.0));\n"; + } + + if (config.TevStageUpdatesCombinerBufferColor(index)) + out += "g_combiner_buffer.rgb = g_last_tex_env_out.rgb;\n"; + + if (config.TevStageUpdatesCombinerBufferAlpha(index)) + out += "g_combiner_buffer.a = g_last_tex_env_out.a;\n"; +} + std::string GenerateFragmentShader(const ShaderCacheKey& config) { - std::string shader = R"( + std::string out = R"( #version 150 core #define NUM_VTX_ATTR 7 @@ -288,63 +333,27 @@ vec4 g_last_tex_env_out = vec4(0.0, 0.0, 0.0, 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 == Pica::Regs::CompareFunc::Never) { - shader += "discard;"; - return shader; + if (config.alpha_test_func == Regs::CompareFunc::Never) { + out += "discard;"; + return out; } - auto& tev_stages = config.tev_stages; - for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) { - auto& tev_stage = tev_stages[tev_stage_index]; - if (!IsPassThroughTevStage(tev_stage)) { - std::string index_name = std::to_string(tev_stage_index); + for (std::size_t index = 0; index < config.tev_stages.size(); ++index) + WriteTevStage(out, config, (unsigned)index); - shader += "vec3 color_results_" + index_name + "[3] = vec3[3]("; - AppendColorModifier(shader, tev_stage.color_modifier1, tev_stage.color_source1, index_name); - shader += ", "; - AppendColorModifier(shader, tev_stage.color_modifier2, tev_stage.color_source2, index_name); - shader += ", "; - AppendColorModifier(shader, tev_stage.color_modifier3, tev_stage.color_source3, index_name); - shader += ");\n"; - - shader += "vec3 color_output_" + index_name + " = "; - AppendColorCombiner(shader, tev_stage.color_op, "color_results_" + index_name); - shader += ";\n"; - - shader += "float alpha_results_" + index_name + "[3] = float[3]("; - AppendAlphaModifier(shader, tev_stage.alpha_modifier1, tev_stage.alpha_source1, index_name); - shader += ", "; - AppendAlphaModifier(shader, tev_stage.alpha_modifier2, tev_stage.alpha_source2, index_name); - shader += ", "; - AppendAlphaModifier(shader, tev_stage.alpha_modifier3, tev_stage.alpha_source3, index_name); - shader += ");\n"; - - shader += "float alpha_output_" + index_name + " = "; - AppendAlphaCombiner(shader, tev_stage.alpha_op, "alpha_results_" + index_name); - shader += ";\n"; - - shader += "g_last_tex_env_out = vec4(min(color_output_" + index_name + " * " + std::to_string(tev_stage.GetColorMultiplier()) + ".0, 1.0), min(alpha_output_" + index_name + " * " + std::to_string(tev_stage.GetAlphaMultiplier()) + ".0, 1.0));\n"; - } - - if (config.TevStageUpdatesCombinerBufferColor(tev_stage_index)) - shader += "g_combiner_buffer.rgb = g_last_tex_env_out.rgb;\n"; - - if (config.TevStageUpdatesCombinerBufferAlpha(tev_stage_index)) - shader += "g_combiner_buffer.a = g_last_tex_env_out.a;\n"; + if (config.alpha_test_func != Regs::CompareFunc::Always) { + out += "if ("; + AppendAlphaTestCondition(out, config.alpha_test_func); + out += ") {\n discard;\n }\n"; } - if (config.alpha_test_func != Pica::Regs::CompareFunc::Always) { - shader += "if ("; - AppendAlphaTestCondition(shader, config.alpha_test_func); - shader += ") {\n discard;\n }\n"; - } + out += "color = g_last_tex_env_out;\n}"; - shader += "color = g_last_tex_env_out;\n}"; - return shader; + return out; } std::string GenerateVertexShader() { - static const std::string shader_str = R"( + static const std::string out = R"( #version 150 core #define NUM_VTX_ATTR 7 @@ -365,7 +374,7 @@ void main() { gl_Position = vec4(vert_position.x, -vert_position.y, -vert_position.z, vert_position.w); } )"; - return shader_str; + return out; } -} // namespace GLShaderGen +} // namespace GLShader