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authorSubv <subv2112@gmail.com>2018-08-19 19:55:50 +0200
committerSubv <subv2112@gmail.com>2018-08-19 19:57:58 +0200
commit7fb406c3fca2f7c8266a5cc1988aa8d741921310 (patch)
tree39e3f35542360e99d58ee81662a3c01a1424e8e6 /src/video_core
parentShader: Use the right sampler type in the TEX, TEXS and TLDS instructions. (diff)
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Diffstat (limited to 'src/video_core')
-rw-r--r--src/video_core/renderer_opengl/gl_shader_decompiler.cpp51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 6562be102..f466b9427 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -1567,6 +1567,57 @@ private:
WriteTexsInstruction(instr, coord, texture);
break;
}
+ case OpCode::Id::TLD4: {
+ ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
+ ASSERT(instr.tld4.array == 0);
+ std::string coord{};
+
+ switch (instr.tld4.texture_type) {
+ case Tegra::Shader::TextureType::Texture2D: {
+ std::string x = regs.GetRegisterAsFloat(instr.gpr8);
+ std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
+ coord = "vec2 coords = vec2(" + x + ", " + y + ");";
+ break;
+ }
+ default:
+ UNIMPLEMENTED();
+ }
+
+ const std::string sampler =
+ GetSampler(instr.sampler, instr.tld4.texture_type, instr.tld4.array);
+ // Add an extra scope and declare the texture coords inside to prevent
+ // overwriting them in case they are used as outputs of the texs instruction.
+ shader.AddLine("{");
+ ++shader.scope;
+ shader.AddLine(coord);
+ const std::string texture = "textureGather(" + sampler + ", coords, " +
+ std::to_string(instr.tld4.component) + ')';
+
+ size_t dest_elem{};
+ for (size_t elem = 0; elem < 4; ++elem) {
+ if (!instr.tex.IsComponentEnabled(elem)) {
+ // Skip disabled components
+ continue;
+ }
+ regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
+ ++dest_elem;
+ }
+ --shader.scope;
+ shader.AddLine("}");
+ break;
+ }
+ case OpCode::Id::TLD4S: {
+ const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
+ const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
+ // TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
+ const std::string sampler =
+ GetSampler(instr.sampler, Tegra::Shader::TextureType::Texture2D, false);
+ const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
+ const std::string texture = "textureGather(" + sampler + ", coords, " +
+ std::to_string(instr.tld4s.component) + ')';
+ WriteTexsInstruction(instr, coord, texture);
+ break;
+ }
default: {
LOG_CRITICAL(HW_GPU, "Unhandled memory instruction: {}", opcode->GetName());
UNREACHABLE();