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author | bunnei <bunneidev@gmail.com> | 2015-10-06 04:33:47 +0200 |
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committer | bunnei <bunneidev@gmail.com> | 2015-10-22 03:53:14 +0200 |
commit | c86b9d42423b5a83ccba40f828b7ad9dafe3e317 (patch) | |
tree | 04bdd0a99fa7fa36946422d0119b3d537dd99526 /src/video_core/renderer_opengl/gl_shader_util.cpp | |
parent | gl_rasterizer: Move logic for creating ShaderCacheKey to a static function. (diff) | |
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Diffstat (limited to 'src/video_core/renderer_opengl/gl_shader_util.cpp')
-rw-r--r-- | src/video_core/renderer_opengl/gl_shader_util.cpp | 348 |
1 files changed, 3 insertions, 345 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_util.cpp b/src/video_core/renderer_opengl/gl_shader_util.cpp index 8a6a51ad4..ce218b857 100644 --- a/src/video_core/renderer_opengl/gl_shader_util.cpp +++ b/src/video_core/renderer_opengl/gl_shader_util.cpp @@ -2,22 +2,15 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. - -#include "gl_shader_util.h" -#include "gl_rasterizer.h" -#include "common/logging/log.h" - -#include "video_core/pica.h" - #include <algorithm> #include <vector> #include "common/logging/log.h" #include "video_core/renderer_opengl/gl_shader_util.h" -namespace ShaderUtil { +namespace GLShader { -GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) { +GLuint LoadProgram(const char* vertex_shader, const char* fragment_shader) { // Create the shaders GLuint vertex_shader_id = glCreateShader(GL_VERTEX_SHADER); @@ -101,339 +94,4 @@ GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) { return program_id; } -} - -namespace ShaderCache -{ - -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); -} - -void AppendSource(std::string& shader, Pica::Regs::TevStageConfig::Source source, const std::string& index_name) { - using Source = Pica::Regs::TevStageConfig::Source; - switch (source) { - case Source::PrimaryColor: - shader += "o[2]"; - break; - case Source::PrimaryFragmentColor: - // HACK: Until we implement fragment lighting, use primary_color - shader += "o[2]"; - break; - case Source::SecondaryFragmentColor: - // HACK: Until we implement fragment lighting, use zero - shader += "vec4(0.0, 0.0, 0.0, 0.0)"; - break; - case Source::Texture0: - shader += "texture(tex[0], o[3].xy)"; - break; - case Source::Texture1: - shader += "texture(tex[1], o[3].zw)"; - break; - case Source::Texture2: // TODO: Unverified - shader += "texture(tex[2], o[5].zw)"; - break; - case Source::PreviousBuffer: - shader += "g_combiner_buffer"; - break; - case Source::Constant: - shader += "const_color[" + index_name + "]"; - break; - case Source::Previous: - shader += "g_last_tex_env_out"; - break; - default: - shader += "vec4(0.0)"; - LOG_CRITICAL(Render_OpenGL, "Unknown source op %u", source); - break; - } -} - -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; - switch (modifier) { - case ColorModifier::SourceColor: - AppendSource(shader, source, index_name); - shader += ".rgb"; - break; - case ColorModifier::OneMinusSourceColor: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".rgb"; - break; - case ColorModifier::SourceAlpha: - AppendSource(shader, source, index_name); - shader += ".aaa"; - break; - case ColorModifier::OneMinusSourceAlpha: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".aaa"; - break; - case ColorModifier::SourceRed: - AppendSource(shader, source, index_name); - shader += ".rrr"; - break; - case ColorModifier::OneMinusSourceRed: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".rrr"; - break; - case ColorModifier::SourceGreen: - AppendSource(shader, source, index_name); - shader += ".ggg"; - break; - case ColorModifier::OneMinusSourceGreen: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".ggg"; - break; - case ColorModifier::SourceBlue: - AppendSource(shader, source, index_name); - shader += ".bbb"; - break; - case ColorModifier::OneMinusSourceBlue: - shader += "vec3(1.0) - "; - AppendSource(shader, source, index_name); - shader += ".bbb"; - break; - default: - shader += "vec3(0.0)"; - LOG_CRITICAL(Render_OpenGL, "Unknown color modifier op %u", modifier); - break; - } -} - -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; - switch (modifier) { - case AlphaModifier::SourceAlpha: - AppendSource(shader, source, index_name); - shader += ".a"; - break; - case AlphaModifier::OneMinusSourceAlpha: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".a"; - break; - case AlphaModifier::SourceRed: - AppendSource(shader, source, index_name); - shader += ".r"; - break; - case AlphaModifier::OneMinusSourceRed: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".r"; - break; - case AlphaModifier::SourceGreen: - AppendSource(shader, source, index_name); - shader += ".g"; - break; - case AlphaModifier::OneMinusSourceGreen: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".g"; - break; - case AlphaModifier::SourceBlue: - AppendSource(shader, source, index_name); - shader += ".b"; - break; - case AlphaModifier::OneMinusSourceBlue: - shader += "1.0 - "; - AppendSource(shader, source, index_name); - shader += ".b"; - break; - default: - shader += "vec3(0.0)"; - LOG_CRITICAL(Render_OpenGL, "Unknown alpha modifier op %u", modifier); - break; - } -} - -void AppendColorCombiner(std::string& shader, Pica::Regs::TevStageConfig::Operation operation, const std::string& variable_name) { - using Operation = Pica::Regs::TevStageConfig::Operation; - - switch (operation) { - case Operation::Replace: - shader += variable_name + "[0]"; - break; - case Operation::Modulate: - shader += variable_name + "[0] * " + variable_name + "[1]"; - break; - case Operation::Add: - shader += "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))"; - break; - case Operation::Lerp: - shader += 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))"; - break; - case Operation::MultiplyThenAdd: - shader += "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]"; - break; - default: - shader += "vec3(0.0)"; - LOG_CRITICAL(Render_OpenGL, "Unknown color comb op %u", operation); - break; - } -} - -void AppendAlphaCombiner(std::string& shader, Pica::Regs::TevStageConfig::Operation operation, const std::string& variable_name) { - using Operation = Pica::Regs::TevStageConfig::Operation; - switch (operation) { - case Operation::Replace: - shader += variable_name + "[0]"; - break; - case Operation::Modulate: - shader += variable_name + "[0] * " + variable_name + "[1]"; - break; - case Operation::Add: - shader += "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)"; - break; - case Operation::Lerp: - shader += 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)"; - break; - case Operation::MultiplyThenAdd: - shader += "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]"; - break; - default: - shader += "0.0"; - LOG_CRITICAL(Render_OpenGL, "Unknown alpha combiner op %u", operation); - break; - } -} - -void AppendAlphaTestCondition(std::string& shader, Pica::Regs::CompareFunc func) { - using CompareFunc = Pica::Regs::CompareFunc; - switch (func) { - case CompareFunc::Never: - shader += "true"; - break; - case CompareFunc::Always: - shader += "false"; - break; - case CompareFunc::Equal: - shader += "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"; - break; - case CompareFunc::LessThan: - shader += "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"; - break; - case CompareFunc::GreaterThan: - shader += "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"; - break; - default: - shader += "false"; - LOG_CRITICAL(Render_OpenGL, "Unknown alpha test condition %u", func); - break; - } -} - -std::string GenerateFragmentShader(const ShaderCacheKey& config) { - std::string shader = R"( -#version 150 core - -#define NUM_VTX_ATTR 7 -#define NUM_TEV_STAGES 6 - -in vec4 o[NUM_VTX_ATTR]; -out vec4 color; - -uniform int alphatest_ref; -uniform vec4 const_color[NUM_TEV_STAGES]; -uniform sampler2D tex[3]; - -uniform vec4 tev_combiner_buffer_color; - -void main(void) { - vec4 g_combiner_buffer = tev_combiner_buffer_color; - 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; - } - - 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); - - 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 != Pica::Regs::CompareFunc::Always) { - shader += "if ("; - AppendAlphaTestCondition(shader, config.alpha_test_func); - shader += ") {\n discard;\n }\n"; - } - - shader += "color = g_last_tex_env_out;\n}"; - return shader; -} -} +} // namespace GLShader |