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Merge pull request #2367 from JayFoxRox/lighting-lut-quickfix

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Lighting LUT Quickfix
This commit is contained in:
bunnei 2016-12-29 13:41:51 -05:00 committed by GitHub
commit 2f746e9946
1 changed files with 9 additions and 10 deletions
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19
src/video_core/renderer_opengl/gl_shader_gen.cpp
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@ -293,7 +293,7 @@ static void AppendAlphaTestCondition(std::string& out, Regs::CompareFunc func) {
case CompareFunc::GreaterThanOrEqual: {
static const char* op[] = {"!=", "==", ">=", ">", "<=", "<"};
unsigned index = (unsigned)func - (unsigned)CompareFunc::Equal;
out += "int(last_tex_env_out.a * 255.0f) " + std::string(op[index]) + " alphatest_ref";
out += "int(last_tex_env_out.a * 255.0) " + std::string(op[index]) + " alphatest_ref";
break;
}
@ -422,16 +422,13 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
if (abs) {
// LUT index is in the range of (0.0, 1.0)
index = lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")"
: "max(" + index + ", 0.f)";
return "(FLOAT_255 * clamp(" + index + ", 0.0, 1.0))";
: "max(" + index + ", 0.0)";
} else {
// LUT index is in the range of (-1.0, 1.0)
index = "clamp(" + index + ", -1.0, 1.0)";
return "(FLOAT_255 * ((" + index + " < 0) ? " + index + " + 2.0 : " + index +
") / 2.0)";
index = "((" + index + " < 0) ? " + index + " + 2.0 : " + index + ") / 2.0";
}
return std::string();
return "(OFFSET_256 + SCALE_256 * clamp(" + index + ", 0.0, 1.0))";
};
// Gets the lighting lookup table value given the specified sampler and index
@ -462,7 +459,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
if (light_config.dist_atten_enable) {
std::string index = "(" + light_src + ".dist_atten_scale * length(-view - " +
light_src + ".position) + " + light_src + ".dist_atten_bias)";
index = "((clamp(" + index + ", 0.0, FLOAT_255)))";
index = "(OFFSET_256 + SCALE_256 * clamp(" + index + ", 0.0, 1.0))";
const unsigned lut_num =
((unsigned)Regs::LightingSampler::DistanceAttenuation + light_config.num);
dist_atten = GetLutValue((Regs::LightingSampler)lut_num, index);
@ -580,8 +577,10 @@ std::string GenerateFragmentShader(const PicaShaderConfig& config) {
#version 330 core
#define NUM_TEV_STAGES 6
#define NUM_LIGHTS 8
#define LIGHTING_LUT_SIZE 256
#define FLOAT_255 (255.0 / 256.0)
// Texture coordinate offsets and scales
#define OFFSET_256 (0.5 / 256.0)
#define SCALE_256 (255.0 / 256.0)
in vec4 primary_color;
in vec2 texcoord[3];