C++ GLSLProgram::getHandle方法代码示例

void MainGraphicsWidget::voxelRender()
{
	VoxelGrid::getInstance()->buildVoxels(m_lightBuffer->getLight());
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	MatrixManager::getInstance()->putMatrix4(MODELVIEW, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix4(PROJECTION, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix3(NORMAL, glm::mat3(1.0f));
	view->viewport();
	view->use3D(true);

	camera->transform();
	GLSLProgram *glslProgram = ShaderManager::getInstance()->getShader("Voxel");
	glslProgram->use();

	glBindFragDataLocation(glslProgram->getHandle(), 0, "fragColor");
	glBindAttribLocation(glslProgram->getHandle(), 0, "v_vertex");

	glslProgram->sendUniform("projectionMatrix", &MatrixManager::getInstance()->getMatrix4(PROJECTION)[0][0]);
	glslProgram->sendUniform("modelviewMatrix", &MatrixManager::getInstance()->getMatrix4(MODELVIEW)[0][0]);

	glm::mat4 cameraInverse = glm::mat4(1.0);
	cameraInverse = camera->transformToMatrix(cameraInverse);
	cameraInverse = glm::inverse(cameraInverse);
	glslProgram->sendUniform("invCameraMatrix", &cameraInverse[0][0]);
	glslProgram->sendUniform("worldSize", WORLD_SIZE);
	//glslProgram->sendUniform("numVoxels", VOXEL_SIZE);
	//glslProgram->sendUniform("mipLevel", VoxelGrid::getInstance()->getMipLevel());

	int mipFactor = pow(2.0, VoxelGrid::getInstance()->getMipLevel());
	
	glActiveTexture(GL_TEXTURE8);
	glEnable(GL_TEXTURE_3D);
	VoxelGrid::getInstance()->bind(VoxelGrid::getInstance()->getMipLevel());
	glslProgram->sendUniform("voxelmap", 8);

	//glEnable(GL_POINT_SMOOTH);
	glPointSize(10.0f*mipFactor);
	float voxelWidth = (float)WORLD_SIZE / (float)VOXEL_SIZE * mipFactor;
	glBegin(GL_POINTS);
	for (float x=-(WORLD_SIZE/2.0)+(voxelWidth/2.0); x<(WORLD_SIZE/2.0); x+=voxelWidth)
	{
		for (float y=-(WORLD_SIZE/2.0)+(voxelWidth/2.0); y<(WORLD_SIZE/2.0); y+=voxelWidth)
		{
			for (float z=-(WORLD_SIZE/2.0)+(voxelWidth/2.0); z<(WORLD_SIZE/2.0); z+=voxelWidth)
			{
				glVertex3f(x,y,z);
			}
		}
	}
	glEnd();

	glslProgram->disable();
}

void MainGraphicsWidget::forwardRender()
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	MatrixManager::getInstance()->putMatrix4(MODELVIEW, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix4(PROJECTION, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix3(NORMAL, glm::mat3(1.0f));
	view->viewport();
	view->use3D(true);

	camera->transform();
	GLSLProgram *glslProgram = ShaderManager::getInstance()->getShader("Basic");
	glslProgram->use();

	glBindFragDataLocation(glslProgram->getHandle(), 0, "fragColor");
	glBindAttribLocation(glslProgram->getHandle(), 0, "v_vertex");
	glBindAttribLocation(glslProgram->getHandle(), 1, "v_texture");
	glBindAttribLocation(glslProgram->getHandle(), 2, "v_normal");
	glBindAttribLocation(glslProgram->getHandle(), 3, "v_tangent");
	glBindAttribLocation(glslProgram->getHandle(), 4, "v_bitangent");

	glslProgram->sendUniform("light.direction", 1.0f,-5.0f,2.0f);
	glslProgram->sendUniform("light.color", 1.0f,1.0f,1.0f);
	glslProgram->sendUniform("light.ambient", 0.7f);
	glslProgram->sendUniform("light.diffuse", 0.6f);
	glslProgram->sendUniform("projectionMatrix", &MatrixManager::getInstance()->getMatrix4(PROJECTION)[0][0]);
	glslProgram->sendUniform("modelviewMatrix", &MatrixManager::getInstance()->getMatrix4(MODELVIEW)[0][0]);
	glslProgram->sendUniform("curveGeometry", false);

	glm::mat4 cameraInverse = glm::mat4(1.0);
	cameraInverse = camera->transformToMatrix(cameraInverse);
	cameraInverse = glm::inverse(cameraInverse);
	glslProgram->sendUniform("inverseCameraMatrix", &cameraInverse[0][0]);
	glslProgram->sendUniform("cameraPos", camera->getEyeX(), camera->getEyeY(), camera->getEyeZ());

	MaterialManager::getInstance()->getMaterial("Default")->sendToShader("Basic");
	myGrid->draw();

	SceneManager::getInstance()->draw("Basic");

	glslProgram->disable();

	SceneManager::getInstance()->drawTransformers();
}

void CascadedShadowMap::buildShadowMaps(Camera *camera, View *view, DirectLight *light)
{
	//Profiler::getInstance()->startProfile("Build Shadow Maps");
	float nSlice[] = {0.0, m_nSlices[0], m_nSlices[1], m_nSlices[2], 1.0};
	Frustum *frustum = new Frustum();
	frustum->getFrustum(camera, view);

	m_shadowMaps[3]->bind();
	glClearDepth(1.0);
	glClear(GL_DEPTH_BUFFER_BIT);
	glDisable(GL_CULL_FACE);
	for (int i=0; i<4; i++)
	{
		Camera *lightCamera = createLightCamera(nSlice[i],nSlice[i+1],camera,view,light);
		View *lightView = createLightView(nSlice[i],nSlice[i+1],camera,lightCamera,view,frustum);
		Frustum *lightFrustum = new Frustum();
		lightFrustum->getOrthoFrustum(lightCamera,lightView);

		MatrixManager::getInstance()->putMatrix4(MODELVIEW, glm::mat4(1.0f));
		MatrixManager::getInstance()->putMatrix4(PROJECTION, glm::mat4(1.0f));
		
		m_shadowMaps[i]->bind();
		glClearDepth(1.0);
		glEnable(GL_DEPTH_TEST);
		glClear(GL_DEPTH_BUFFER_BIT);
		glPushAttrib( GL_VIEWPORT_BIT );
		glViewport( 0, 0, m_nSize, m_nSize);
		lightView->use3D(false);

		GLSLProgram *glslProgram = ShaderManager::getInstance()->getShader("DirectShadow");
		glslProgram->use();

		
		glm::mat4 cameraMat = glm::mat4(1.0f);
		cameraMat = lightCamera->transformToMatrix(cameraMat);

		m_m4LightMatrix[i] = MatrixManager::getInstance()->getMatrix4(PROJECTION) * cameraMat;
		MatrixManager::getInstance()->putMatrix4(MODELVIEW, cameraMat);

		glslProgram->sendUniform("projectionMatrix", &MatrixManager::getInstance()->getMatrix4(PROJECTION)[0][0]);
		glBindAttribLocation(glslProgram->getHandle(), 0, "v_vertex");

		SceneManager::getInstance()->draw("DirectShadow");
		glslProgram->disable();

		glPopAttrib();
		m_shadowMaps[i]->unbind();

		delete lightCamera;
		delete lightView;
		delete lightFrustum;
	}
	glEnable(GL_CULL_FACE);
	//Profiler::getInstance()->endProfile();
}

///////////////////////////////////////////////////////////////////////////////
// Called to draw scene
void RenderScene(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    GLuint programHandle = prog.getHandle();
    GLuint adsIndex = glGetSubroutineIndex( programHandle, GL_VERTEX_SHADER, "phongModel" );
    GLuint diffuseIndex = glGetSubroutineIndex(programHandle, GL_VERTEX_SHADER, "diffuseOnly");

    glUniformSubroutinesuiv( GL_VERTEX_SHADER, 1, &adsIndex);
    model = mat4(1.0f);
    model *= glm::translate(vec3(-3.0f,-1.5f,0.0f));
    model *= glm::rotate(-90.0f, vec3(1.0f,0.0f,0.0f));
    setMatrices();
    teapot->render();

    glUniformSubroutinesuiv( GL_VERTEX_SHADER, 1, &diffuseIndex);
    model = mat4(1.0f);
    model *= glm::translate(vec3(3.0f,-1.5f, 0.0f));
    model *= glm::rotate(-90.0f, vec3(1.0f,0.0f,0.0f));
    setMatrices();
    teapot->render();
}

void loadAssets()
{
	loadParticles();
	loadPlane();

	pstack.push(glm::perspective(45.0f, 
					(GLfloat)window.GetWidth()/window.GetHeight(), 0.1f, 175.0f));
	
	mstack.push(glm::lookAt(vec3(0, 2.7, 7), vec3(0, 2.4, 6), vec3(0, 1, 0)));
	
	// Load terrain shader
	if (!g_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "terrain-vert.glsl", 
			GLSLShader::VERTEX)) {
		fprintf(stderr, "%s\n", g_program.log().c_str());
		exit(1);
	}

	if (!g_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "terrain-frag.glsl", 
			GLSLShader::FRAGMENT)) {
		fprintf(stderr, "%s\n", g_program.log().c_str());
		exit(1);
	}

	if (!g_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "terrain-tc.glsl", 
			GLSLShader::TESS_CONTROL)) {
		fprintf(stderr, "%s\n", g_program.log().c_str());
		exit(1);
	}

	if (!g_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "terrain-te.glsl", 
			GLSLShader::TESS_EVALUATION)) {
		fprintf(stderr, "%s\n", g_program.log().c_str());
		exit(1);
	}

	if (!g_program.link()) {
		fprintf(stderr, "%s\n", g_program.log().c_str());
		exit(1);
	}

	// Load plane shader
	if (!d_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "default-vert.glsl", 
			GLSLShader::VERTEX)) {
		fprintf(stderr, "%s\n", d_program.log().c_str());
		exit(1);
	}

	if (!d_program.compileShaderFromFile(
			ROOT_PATH_RELATIVE SHADER_DIR "default-frag.glsl", 
			GLSLShader::FRAGMENT)) {
		fprintf(stderr, "%s\n", d_program.log().c_str());
		exit(1);
	}

	const char *outputNames[] = { "Position" };
	glTransformFeedbackVaryings(d_program.getHandle(), 1, outputNames, GL_SEPARATE_ATTRIBS);

	if (!d_program.link()) {
		fprintf(stderr, "%s\n", d_program.log().c_str());
		exit(1);
	}

	
	g_program.use();
	g_program.setUniform("Viewport", viewport);
	
	g_program.setUniform("MinTessLevel", 1.0f);
	g_program.setUniform("MaxTessLevel", max_tess);
	//g_program.setUniform("MaxTessLevel", 20.0f);

	g_program.setUniform("NearClip", 0.1f);
	g_program.setUniform("FarClip", 175.0f);
	g_program.setUniform("NearFog", 10.0f);
	g_program.setUniform("FarFog", 125.0f);

	g_program.setUniform("Light0.position", vec3(L0POSITION));
	g_program.setUniform("Light0.La", vec3(L0AMBIENT));
	g_program.setUniform("Light0.Ld", vec3(L0DIFFUSE));


	GLuint terrainmap = SOIL_load_OGL_texture (
							ROOT_PATH_RELATIVE TEXTURE_DIR "heightmap-vlarge.png",
							SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_LOAD_L );
	GLuint watermap = SOIL_load_OGL_texture (
							ROOT_PATH_RELATIVE TEXTURE_DIR "watermap.jpg",
							SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_LOAD_L );
	GLuint ttex1 = SOIL_load_OGL_texture (
							ROOT_PATH_RELATIVE TEXTURE_DIR "grass.jpg",
							SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_LOAD_L );
	GLuint ttex2 = SOIL_load_OGL_texture (
							ROOT_PATH_RELATIVE TEXTURE_DIR "stonesnow.jpg",
							SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_LOAD_L );
	GLuint ttex3 = SOIL_load_OGL_texture (
							ROOT_PATH_RELATIVE TEXTURE_DIR "water.jpg",
							SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_LOAD_L );
//.........这里部分代码省略.........

void IndirectBuffer::drawToBuffer(GLuint nDepthTex, GLuint nTangentTex, GLuint nBiangentTex, GLuint nNormalTex, GLuint nDiffuseTex, View *view, Camera *camera)
{
	GLSLProgram *glslProgram = ShaderManager::getInstance()->getShader("Indirect");
	glslProgram->use();

	bind();
	GLenum mrt[] = {GL_COLOR_ATTACHMENT0_EXT};
	glDrawBuffers(1, mrt);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glPushAttrib( GL_VIEWPORT_BIT );
	glViewport( 0, 0, getWidth(), getHeight());

	MatrixManager::getInstance()->putMatrix4(MODELVIEW, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix4(PROJECTION, glm::mat4(1.0f));
	camera->transform();
	view->use3D(true);
	glm::mat4 m4InvMVP = MatrixManager::getInstance()->getMatrix4(PROJECTION) * MatrixManager::getInstance()->getMatrix4(MODELVIEW);
	m4InvMVP = glm::inverse(m4InvMVP);
	MatrixManager::getInstance()->putMatrix4(MODELVIEW, glm::mat4(1.0f));
	MatrixManager::getInstance()->putMatrix4(PROJECTION, glm::mat4(1.0f));
	view->use3D(false);

	glBindFragDataLocation(glslProgram->getHandle(), 0, "glossyBuffer");
	glBindAttribLocation(glslProgram->getHandle(), 0, "v_vertex");
	glBindAttribLocation(glslProgram->getHandle(), 1, "v_texture");

	glslProgram->sendUniform("projectionMatrix", &MatrixManager::getInstance()->getMatrix4(PROJECTION)[0][0]);
	glslProgram->sendUniform("inverseMVPMatrix", &m4InvMVP[0][0]);

	glslProgram->sendUniform("worldSize", WORLD_SIZE);
	glslProgram->sendUniform("numVoxels", VOXEL_SIZE);

	glActiveTexture(GL_TEXTURE8);
	glEnable(GL_TEXTURE_3D);
	VoxelGrid::getInstance()->bind(0);
	glActiveTexture(GL_TEXTURE9);
	glEnable(GL_TEXTURE_3D);
	VoxelGrid::getInstance()->bind(1);
	glActiveTexture(GL_TEXTURE10);
	glEnable(GL_TEXTURE_3D);
	VoxelGrid::getInstance()->bind(2);
	glActiveTexture(GL_TEXTURE11);
	glEnable(GL_TEXTURE_3D);
	VoxelGrid::getInstance()->bind(3);
	glslProgram->sendUniform("voxelmap[0]", 8);
	glslProgram->sendUniform("voxelmap[1]", 9);
	glslProgram->sendUniform("voxelmap[2]", 10);
	glslProgram->sendUniform("voxelmap[3]", 11);

	glActiveTexture(GL_TEXTURE0); 
	glBindTexture(GL_TEXTURE_2D, nDepthTex);
	glActiveTexture(GL_TEXTURE1); 
	glBindTexture(GL_TEXTURE_2D, nTangentTex);
	glActiveTexture(GL_TEXTURE2); 
	glBindTexture(GL_TEXTURE_2D, nBiangentTex);
	glActiveTexture(GL_TEXTURE3); 
	glBindTexture(GL_TEXTURE_2D, nNormalTex);
	glActiveTexture(GL_TEXTURE4); 
	glBindTexture(GL_TEXTURE_2D, nDiffuseTex);
	glslProgram->sendUniform("depthTex",0);
	glslProgram->sendUniform("tanTex",1);
	glslProgram->sendUniform("bitanTex",2);
	glslProgram->sendUniform("normalTex",3);
	glslProgram->sendUniform("diffuseTex",4);

	drawScreenShader(0,0,1.0f,1.0f);
	glFinish();
	glslProgram->disable();
	unbind();	
}