![]() Vertices are now 8 floats in size, so you'll have to update the vertex attribute offsets and strides as well. In order to reduce CPU overhead from issuing too many draw calls, we knew that we. ![]() In addition it provides a rendering surface that can be painted on with a QPainter, rendered to using native GL calls, or both. We're also going to need to alter the color again later in this chapter, so make sure the fragment shader multiplies the texture color by the color attribute: vec4 texColor = mix(texture(texKitten, Texcoord), Our games still target older Android devices that only support OpenGL ES 2.0. Detailed Description The QGLFramebufferObject class encapsulates an OpenGL framebuffer object, defined by the GLEXTframebufferobject extension. Gl_Position = proj * view * model * vec4(position, 1.0) The vertex shader needs to be modified to accept a third coordinate: in vec3 position ![]() To best demonstrate the use of these buffers, let's draw a cube instead of a flat shape. For each of these a problem will be presented and subsequently solved with that specific buffer. This chapter will discuss two additional types, the depth buffer and the stencil buffer. Up until now there is only one type of output buffer you've made use of, the color buffer.
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