[Feat]: (MG_Test/Program): add test to check optfine shader behavior

2026-09-08 04:08:32 +09:00 · 2025-11-12 15:56:40 +08:00
parent 8b8fa41ef2
commit bfeb827eb7
3 changed files with 120 additions and 16 deletions
@@ -835,4 +835,104 @@ TEST_F(ProgramTest, MinecraftTexColor1_21_6) {
        spvcSession.Compile(&result);
        printf("%s\n\n", result);
    }
-}
+}
+
+const char* optifine_vs1 = R"(#version 460 core
+
+in vec3 Position;
+in vec2 UV0;
+
+uniform mat4 ModelViewMat;
+uniform mat4 ProjMat;
+
+out vec2 texCoord0;
+
+void main() {
+    gl_Position = ProjMat * ModelViewMat * vec4(Position, 1.0);
+
+    texCoord0 = UV0;
+}
+)";
+
+const char* optifine_fs1 = R"(#version 460 core
+
+uniform sampler2D Sampler0;
+
+uniform vec4 ColorModulator;
+
+in vec2 texCoord0;
+
+out vec4 fragColor;
+
+void main() {
+    vec4 color = texture(Sampler0, texCoord0);
+    if (color.a == 0.0) {
+        discard;
+    }
+    fragColor = color * ColorModulator;
+})";
+
+TEST_F(ProgramTest, CompileAndLinkOptfineSample1) {
+    char infoLog[1024] = "";
+
+    GLuint fs = CreateShader(GL_FRAGMENT_SHADER);
+    ShaderSource(fs, 1, &optifine_fs1, NULL);
+    CompileShader(fs);
+    GLint fsStatus = GL_FALSE;
+    GetShaderiv(fs, GL_COMPILE_STATUS, &fsStatus);
+    GetShaderInfoLog(fs, 1024, nullptr, infoLog);
+    ASSERT_EQ(fsStatus, GL_TRUE) << infoLog;
+
+    GLuint vs = CreateShader(GL_VERTEX_SHADER);
+    ShaderSource(vs, 1, &optifine_vs1, NULL);
+    CompileShader(vs);
+    GLint vsStatus = GL_FALSE;
+    GetShaderiv(vs, GL_COMPILE_STATUS, &vsStatus);
+    GetShaderInfoLog(vs, 1024, nullptr, infoLog);
+    ASSERT_EQ(vsStatus, GL_TRUE) << infoLog;
+
+    GLuint program = CreateProgram();
+    AttachShader(program, fs);
+    AttachShader(program, vs);
+
+    BindAttribLocation(program, 0, "Position");
+    BindAttribLocation(program, 2, "UV0");
+    BindAttribLocation(program, 1, "Color");
+
+    LinkProgram(program);
+    GLint linkStatus = GL_FALSE;
+    GetProgramiv(program, GL_LINK_STATUS, &linkStatus);
+    ASSERT_EQ(linkStatus, GL_TRUE);
+    printf("Program linked.\n");
+
+    UseProgram(program);
+    GLint posLoc = GetAttribLocation(program, "Position");
+    ASSERT_EQ(posLoc, 0);
+    GLint uv0Loc = GetAttribLocation(program, "UV0");
+    ASSERT_EQ(uv0Loc, 2);
+
+    auto programObject = MG_State::pGLContext->GetCurrentProgram();
+    auto& spirvs = programObject->GetGeneratedSpirv();
+    char* found_correct_uv0 = nullptr;
+    const char* needle = "layout(location = 2) in vec2 UV0;";
+    for (auto spirv: spirvs) {
+        MG_Util::ShaderTranspiler::SpvcSession spvcSession(spirv);
+        spvc_compiler_options options;
+        spvcSession.CreateOptions(&options);
+
+        spvc_compiler_options_set_uint(options, SPVC_COMPILER_OPTION_GLSL_VERSION, 460);
+        spvc_compiler_options_set_bool(options, SPVC_COMPILER_OPTION_GLSL_ES, SPVC_FALSE);
+        // spvc_compiler_options_set_bool(options, SPVC_COMPILER_OPTION_GLSL_VULKAN_SEMANTICS, SPVC_FALSE);
+
+        spvcSession.SetOptions(options);
+
+        const char* result = nullptr;
+        spvcSession.Compile(&result);
+        printf("%s\n\n", result);
+        const char* ret = strstr(result, needle);
+        if (ret)
+            found_correct_uv0 = (char*)ret;
+    }
+    ASSERT_TRUE(found_correct_uv0 != nullptr) << "Not found correct attribute in generated shader.\n(Searching for \"" << needle << "\")";
+}
+