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author | bunnei <bunneidev@gmail.com> | 2015-11-12 23:33:21 +0100 |
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committer | bunnei <bunneidev@gmail.com> | 2016-02-05 23:17:29 +0100 |
commit | afbef525163af1b28e5b7493e58383d442762228 (patch) | |
tree | e68783a7770e400136654ae315021ecee24d6e21 /src/video_core/renderer_opengl/gl_shader_gen.cpp | |
parent | pica: Implement decoding of basic fragment lighting components. (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 | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp index 22022f7f4..5bc588b0b 100644 --- a/src/video_core/renderer_opengl/gl_shader_gen.cpp +++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp @@ -32,8 +32,7 @@ static void AppendSource(std::string& out, TevStageConfig::Source source, out += "primary_color"; break; case Source::PrimaryFragmentColor: - // HACK: Until we implement fragment lighting, use primary_color - out += "primary_color"; + out += "primary_fragment_color"; break; case Source::SecondaryFragmentColor: // HACK: Until we implement fragment lighting, use zero @@ -324,24 +323,67 @@ std::string GenerateFragmentShader(const PicaShaderConfig& config) { std::string out = R"( #version 330 core #define NUM_TEV_STAGES 6 +#define NUM_LIGHTS 8 in vec4 primary_color; in vec2 texcoord[3]; +in vec4 normquat; +in vec3 view; out vec4 color; +struct LightSrc { + vec3 diffuse; + vec3 ambient; + vec3 position; +}; + layout (std140) uniform shader_data { vec4 const_color[NUM_TEV_STAGES]; vec4 tev_combiner_buffer_color; int alphatest_ref; float depth_offset; + vec3 lighting_global_ambient; + LightSrc light_src[NUM_LIGHTS]; }; uniform sampler2D tex[3]; void main() { +vec4 primary_fragment_color = vec4(0.0); )"; + if (config.lighting_enabled) { + out += "vec3 normal = normalize(vec3(\n"; + out += " 2.f*(normquat.x*normquat.z + normquat.y*normquat.w),\n"; + out += " 2.f*(normquat.y*normquat.z + normquat.x*normquat.w),\n"; + out += " 1.f - 2.f*(normquat.x*normquat.x + normquat.y*normquat.y)));\n"; + out += "vec4 secondary_color = vec4(0.0);\n"; + out += "vec3 diffuse_sum = vec3(0.0);\n"; + out += "vec3 fragment_position = -view;\n"; + + for (unsigned light_index = 0; light_index < config.num_lights; ++light_index) { + unsigned num = config.light_src[light_index].num; + + std::string light_vector; + if (config.light_src[light_index].directional) + light_vector = "normalize(-light_src[" + std::to_string(num) + "].position)"; + else + light_vector = "normalize(light_src[" + std::to_string(num) + "].position - fragment_position)"; + + std::string dot_product; + if (config.light_src[light_index].two_sided_diffuse) + dot_product = "abs(dot(" + light_vector + ", normal))"; + else + dot_product = "max(dot(" + light_vector + ", normal), 0.0)"; + + out += "diffuse_sum += ((light_src[" + std::to_string(num) + "].diffuse * " + dot_product + ") + light_src[" + std::to_string(num) + "].ambient) * 1.0;\n"; + } + + out += "diffuse_sum += lighting_global_ambient;\n"; + out += "primary_fragment_color = vec4(clamp(diffuse_sum, vec3(0.0), vec3(1.0)), 1.0);\n"; + } + // 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) { out += "discard; }"; @@ -369,21 +411,28 @@ void main() { std::string GenerateVertexShader() { std::string out = "#version 330 core\n"; + out += "layout(location = " + std::to_string((int)ATTRIBUTE_POSITION) + ") in vec4 vert_position;\n"; out += "layout(location = " + std::to_string((int)ATTRIBUTE_COLOR) + ") in vec4 vert_color;\n"; out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD0) + ") in vec2 vert_texcoord0;\n"; out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD1) + ") in vec2 vert_texcoord1;\n"; out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD2) + ") in vec2 vert_texcoord2;\n"; + out += "layout(location = " + std::to_string((int)ATTRIBUTE_NORMQUAT) + ") in vec4 vert_normquat;\n"; + out += "layout(location = " + std::to_string((int)ATTRIBUTE_VIEW) + ") in vec3 vert_view;\n"; out += R"( out vec4 primary_color; out vec2 texcoord[3]; +out vec4 normquat; +out vec3 view; void main() { primary_color = vert_color; texcoord[0] = vert_texcoord0; texcoord[1] = vert_texcoord1; texcoord[2] = vert_texcoord2; + normquat = vert_normquat; + view = vert_view; gl_Position = vec4(vert_position.x, vert_position.y, -vert_position.z, vert_position.w); } )"; |