// Sets up OpenGL
void _Graphics::SetupOpenGL() {
// Anisotropic filtering
if(SDL_GL_ExtensionSupported("GL_EXT_texture_filter_anisotropic")) {
GLfloat MaxAnisotropy;
glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &MaxAnisotropy);
if(Anisotropy > (int)MaxAnisotropy)
Anisotropy = (int)MaxAnisotropy;
}
// Default state
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnableVertexAttribArray(0);
// Set ortho matrix
Ortho = glm::ortho(0.0f, (float)WindowSize.x, (float)WindowSize.y, 0.0f, -1.0f, 1.0f);
// Build vertex buffers
BuildVertexBuffers();
// Clear screen
ClearScreen();
Flip(0);
}
void Game_Init()
{
// create the renderer with a single layer that clears before rendering
MFRenderLayerDescription layers[] = { { "Prism" }, { "Box" } };
pRenderer = MFRenderer_Create(layers, 2, NULL, NULL);
MFRenderer_SetCurrent(pRenderer);
pDefaultStates = MFStateBlock_CreateDefault();
MFRenderer_SetGlobalStateBlock(pRenderer, pDefaultStates);
// configure prism layer
MFRenderLayer *pLayer = MFRenderer_GetLayer(pRenderer, 0);
MFRenderLayer_SetClear(pLayer, MFRCF_All, MakeVector(0.f, 0.f, 0.0f, 1.f));
// create a render target for the layer
MFRenderTarget *pRenderTarget = MFRenderTarget_CreateSimple("Prism", 256, 256);
pPrismRenderTarget = MFMaterial_Create("Prism_RenderTarget0");
MFRenderLayer_SetLayerRenderTarget(pLayer, pRenderTarget);
MFRenderTarget_Release(pRenderTarget); // the render layer now has a reference, it will be destroyed with the renderer
// configure box layer
pLayer = MFRenderer_GetLayer(pRenderer, 1);
MFRenderLayer_SetClear(pLayer, MFRCF_All, MakeVector(0.f, 0.f, 0.2f, 1.f));
// configure the box layer as the default render layer
MFRenderLayerSet layerSet;
MFZeroMemory(&layerSet, sizeof(layerSet));
layerSet.pSolidLayer = pLayer;
MFRenderer_SetRenderLayerSet(pRenderer, &layerSet);
// build a vertex buffer
BuildVertexBuffers();
// create some state blocks
pPrismStateBlock = MFStateBlock_Create(128);
pBoxStateBlock = MFStateBlock_Create(128);
}
