[Feat] (MG_State/Program): glShaderSource, glUseProgram

MobileGL/MG_State/GLState/ProgramState/ProgramState.cpp

@@ -33,6 +33,14 @@ namespace MobileGL {
                 return CheckIndexAvail(program, m_programObjects) && m_programObjects[program] != nullptr;
             }
 
+            void ProgramState::UseProgram(Uint program) {
+                if (program == 0)
+                    m_currentProgram.reset();
+
+                if (!CheckIndexAvail(program, m_programObjects)) return;
+                m_currentProgram = m_programObjects[program];
+            }
+
             Uint ProgramState::CreateShader(ShaderStage stage) {
                 Uint shaderId = 0;
                 m_shaderIndexGenerator.Generate(1, &shaderId);

MobileGL/MG_State/GLState/ProgramState/ProgramState.h

@@ -15,6 +15,8 @@ namespace MobileGL {
                 void MarkProgramObjectForDeletion(Uint program);
                 Bool ValidateProgramObject(Uint program) const;
 
+                void UseProgram(Uint program);
+
                 Uint CreateShader(ShaderStage stage);
                 SharedPtr<ShaderObject> GetShaderObject(Uint shader);
                 void MarkShaderObjectForDeletion(Uint shader);
@@ -38,6 +40,8 @@ namespace MobileGL {
 
                 IndexGenerator<Uint> m_shaderIndexGenerator;
                 Vector<SharedPtr<ShaderObject>> m_shaderObjects;
+
+                SharedPtr<ProgramObject> m_currentProgram;
             };
         } // namespace GLState
     } // namespace MG_State

MobileGL/MG_State/GLState/ProgramState/ShaderObject.cpp

@@ -8,6 +8,10 @@ namespace MobileGL {
                 m_source = source;
             }
 
+            void ShaderObject::SetShaderSource(std::string &&source) {
+                m_source = Move(source);
+            }
+
             void ShaderObject::Compile() {
                 using namespace MG_Util::ShaderTranspiler;
                 ShaderAttrib attrib{

MobileGL/MG_State/GLState/ProgramState/ShaderObject.h

@@ -58,6 +58,7 @@ namespace MobileGL {
             public:
                 ShaderObject(const ShaderStage stage) : m_stage(stage) {}
                 void SetShaderSource(const std::string& source);
+                void SetShaderSource(std::string&& source);
                 void Compile();
                 void MarkAsDeleted();