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Fix TEXS Instruction encodings

pull/15/merge
FernandoS27 7 years ago
parent
9c2127d5eb
commit
7668ef51d6
1 changed files with 48 additions and 22 deletions
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  1. 70
      src/video_core/renderer_opengl/gl_shader_decompiler.cpp

70
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -2676,14 +2676,29 @@ private:
const bool depth_compare =
instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
u32 num_coordinates = TextureCoordinates(texture_type);
if (depth_compare)
num_coordinates += 1;
auto process_mode = instr.texs.GetTextureProcessMode();
std::string lod_value;
u32 lod_offset = 0;
if (process_mode == Tegra::Shader::TextureProcessMode::LL) {
if (num_coordinates > 2) {
lod_value = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
lod_offset = 2;
} else {
lod_value = regs.GetRegisterAsFloat(instr.gpr20);
lod_offset = 1;
}
}
// Scope to avoid variable name overlaps.
shader.AddLine('{');
++shader.scope;
switch (num_coordinates) {
case 1: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
coord = "float coords = " + x + ';';
break;
}
case 2: {
if (is_array) {
const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
@ -2691,26 +2706,37 @@ private:
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + index + ");");
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
if (lod_offset != 0) {
if (depth_compare) {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20.Value() + lod_offset);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
}
} else {
if (depth_compare) {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
}
}
}
break;
}
case 3: {
if (is_array) {
const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 2);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
index + ");");
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
}
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
break;
}
default:
@ -2727,22 +2753,22 @@ private:
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare);
std::string texture;
switch (instr.texs.GetTextureProcessMode()) {
switch (process_mode) {
case Tegra::Shader::TextureProcessMode::None: {
texture = "texture(" + sampler + ", coords)";
break;
}
case Tegra::Shader::TextureProcessMode::LZ: {
if (depth_compare && is_array) {
texture = "texture(" + sampler + ", coords)";
// Since we got an OpenGL limitation, we set bias very high to enforce mipmap 0
texture = "texture(" + sampler + ", coords, 1000.0)";
} else {
texture = "textureLod(" + sampler + ", coords, 0.0)";
}
break;
}
case Tegra::Shader::TextureProcessMode::LL: {
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
texture = "textureLod(" + sampler + ", coords, " + op_c + ')';
texture = "textureLod(" + sampler + ", coords, " + lod_value + ')';
break;
}
default: {

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