test(RHI): add rendering state tests for CommandList

- Add tests for SetPrimitiveTopology
- Add tests for SetDepthStencilState
- Add tests for SetBlendState
- Add tests for SetBlendFactor
- OpenGL tests now have 45 test cases

tests/RHI/OpenGL/test_command_list.cpp

@@ -130,3 +130,63 @@ TEST_F(OpenGLTestFixture, CommandList_EnableDisable_Blending) {
     glGetIntegerv(GL_BLEND, &blend);
     EXPECT_EQ(blend, 0);
 }
+
+TEST_F(OpenGLTestFixture, CommandList_SetPrimitiveTopology) {
+    OpenGLCommandList cmdList;
+    
+    cmdList.SetPrimitiveTopology(PrimitiveTopology::TriangleList);
+    GLenum error = glGetError();
+    EXPECT_EQ(error, GL_NO_ERROR);
+    
+    cmdList.SetPrimitiveTopology(PrimitiveTopology::LineList);
+    error = glGetError();
+    EXPECT_EQ(error, GL_NO_ERROR);
+    
+    cmdList.SetPrimitiveTopology(PrimitiveTopology::PointList);
+    error = glGetError();
+    EXPECT_EQ(error, GL_NO_ERROR);
+}
+
+TEST_F(OpenGLTestFixture, CommandList_SetDepthStencilState) {
+    OpenGLCommandList cmdList;
+    
+    DepthStencilState state;
+    state.depthEnable = true;
+    state.depthWriteMask = true;
+    state.depthFunc = ComparisonFunc::Less;
+    
+    cmdList.SetDepthStencilState(state);
+    
+    GLint depthTest = 0;
+    glGetIntegerv(GL_DEPTH_TEST, &depthTest);
+    EXPECT_EQ(depthTest, 1);
+}
+
+TEST_F(OpenGLTestFixture, CommandList_SetBlendState) {
+    OpenGLCommandList cmdList;
+    
+    BlendState state;
+    state.renderTargets[0].blendEnable = true;
+    state.renderTargets[0].srcBlend = BlendFactor::SrcAlpha;
+    state.renderTargets[0].dstBlend = BlendFactor::InvSrcAlpha;
+    
+    cmdList.SetBlendState(state);
+    
+    GLint blend = 0;
+    glGetIntegerv(GL_BLEND, &blend);
+    EXPECT_EQ(blend, 1);
+}
+
+TEST_F(OpenGLTestFixture, CommandList_SetBlendFactor) {
+    OpenGLCommandList cmdList;
+    
+    float factor[4] = { 0.5f, 0.5f, 0.5f, 1.0f };
+    cmdList.SetBlendFactor(factor);
+    
+    GLfloat color[4] = {};
+    glGetFloatv(GL_BLEND_COLOR, color);
+    EXPECT_FLOAT_EQ(color[0], 0.5f);
+    EXPECT_FLOAT_EQ(color[1], 0.5f);
+    EXPECT_FLOAT_EQ(color[2], 0.5f);
+    EXPECT_FLOAT_EQ(color[3], 1.0f);
+}