Method InitShaders

examples/OpenGLWindow/GLInstancingRenderer.cpp:1234–1425

}

void GLInstancingRenderer::InitShaders()
{
	int POSITION_BUFFER_SIZE = (m_data->m_maxNumObjectCapacity * sizeof(float) * 4);
	int ORIENTATION_BUFFER_SIZE = (m_data->m_maxNumObjectCapacity * sizeof(float) * 4);
	int COLOR_BUFFER_SIZE = (m_data->m_maxNumObjectCapacity * sizeof(float) * 4);
	int SCALE_BUFFER_SIZE = (m_data->m_maxNumObjectCapacity * sizeof(float) * 4);

	{
		triangleShaderProgram = gltLoadShaderPair(triangleVertexShaderText, triangleFragmentShader);

		//triangle_vpos_location = glGetAttribLocation(triangleShaderProgram, "vPos");
		//triangle_vUV_location = glGetAttribLocation(triangleShaderProgram, "vUV");

		triangle_mvp_location = glGetUniformLocation(triangleShaderProgram, "MVP");
		triangle_vcol_location = glGetUniformLocation(triangleShaderProgram, "vCol");

		glLinkProgram(triangleShaderProgram);
		glUseProgram(triangleShaderProgram);

		glGenVertexArrays(1, &triangleVertexArrayObject);
		glBindVertexArray(triangleVertexArrayObject);

		glGenBuffers(1, &triangleVertexBufferObject);
		glGenBuffers(1, &triangleIndexVbo);

		int sz = MAX_TRIANGLES_IN_BATCH * sizeof(GfxVertexFormat0);
		glBindVertexArray(triangleVertexArrayObject);
		glBindBuffer(GL_ARRAY_BUFFER, triangleVertexBufferObject);
		glBufferData(GL_ARRAY_BUFFER, sz, 0, GL_DYNAMIC_DRAW);

		glBindVertexArray(0);
	}
	{
		pointsShader = gltLoadShaderPair(pointsVertexShader, pointsFragmentShader);
		points_ModelViewMatrix = glGetUniformLocation(pointsShader, "ModelViewMatrix");
		points_ProjectionMatrix = glGetUniformLocation(pointsShader, "ProjectionMatrix");
		points_colour = glGetUniformLocation(pointsShader, "colour");
		points_colourIn = glGetAttribLocation(pointsShader, "colourIn");
		points_position = glGetAttribLocation(pointsShader, "position");
		glLinkProgram(pointsShader);
		glUseProgram(pointsShader);
		int max_viewports=-1;
		glGetIntegerv(GL_MAX_VIEWPORTS, &max_viewports);
		{
			glGenVertexArrays(1, &pointsVertexArrayObject);
			glBindVertexArray(pointsVertexArrayObject);

			glGenBuffers(1, &pointsVertexBufferObject);
			glGenBuffers(1, &pointsIndexVbo);

			int sz = MAX_POINTS_IN_BATCH * sizeof(b3Vector3);
			glBindVertexArray(pointsVertexArrayObject);
			glBindBuffer(GL_ARRAY_BUFFER, pointsVertexBufferObject);
			glBufferData(GL_ARRAY_BUFFER, sz, 0, GL_DYNAMIC_DRAW);

			glBindVertexArray(0);
		}