Huge thanks for your help in my other threads guys. I have another question, this time i'm trying to put some alpha values on the color of the point sprites the code is generating with a VBO. Here the code for the VBO:
glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE); glBindBufferARB(GL_ARRAY_BUFFER_ARB, vboId); glEnableClientState(GL_NORMAL_ARRAY); glEnableClientState(GL_COLOR_ARRAY); glEnableClientState(GL_VERTEX_ARRAY); glNormalPointer(GL_FLOAT, 0, (void*)sizeof(vertices)); glColorPointer(3, GL_FLOAT, 0, (void*)(sizeof(vertices)+sizeof(normals))); glVertexPointer(3, GL_FLOAT, 0, 0); float quadratic[] = {1.0f, 0.0f, 0.01f}; glPointParameterfvARB(GL_POINT_DISTANCE_ATTENUATION_ARB, quadratic ); float maxSize = 0.0f; glGetFloatv(GL_POINT_SIZE_MAX_ARB, &maxSize ); if(maxSize > 100.0f) maxSize = 100.0f; glPointSize(maxSize); glPointParameterfARB(GL_POINT_FADE_THRESHOLD_SIZE_ARB, 60.0f); glPointParameterfARB(GL_POINT_SIZE_MIN_ARB, 1.0f); glPointParameterfARB(GL_POINT_SIZE_MAX_ARB, maxSize); glEnable(GL_POINT_SPRITE_ARB); glDrawArrays(GL_POINTS, 0, numPoints); glDisable(GL_POINT_SPRITE_ARB); glDisableClientState(GL_VERTEX_ARRAY); glDisableClientState(GL_COLOR_ARRAY); glDisableClientState(GL_NORMAL_ARRAY); glBindBufferARB(GL_ARRAY_BUFFER_ARB, 0); glDisable(GL_BLEND);I tried using the GL_BLEND function, and it worked. But the alpha is not working correctly in all direction. I would like to know if it is the right way of doing it or should i load the alpha from a shader?
