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gl_shader_gen: Fix bug in LUT range (should within range [0, 255] not [0, 256]).
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@ -362,11 +362,11 @@ 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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return "clamp(" + index + ", 0.0, FLOAT_255)";
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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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index = "clamp(" + index + ", -1.0, 1.0)";
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return "clamp(((" + index + " < 0) ? " + index + " + 2.0 : " + index + ") / 2.0, 0.0, FLOAT_255)";
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return "(FLOAT_255 * ((" + index + " < 0) ? " + index + " + 2.0 : " + index + ") / 2.0)";
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}
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return std::string();
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@ -487,7 +487,7 @@ std::string GenerateFragmentShader(const PicaShaderConfig& config) {
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#define NUM_TEV_STAGES 6
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#define NUM_LIGHTS 8
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#define LIGHTING_LUT_SIZE 256
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#define FLOAT_255 0.99609375
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#define FLOAT_255 (255.0 / 256.0)
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in vec4 primary_color;
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in vec2 texcoord[3];
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