// @todo - this makes the screen flicker!
void YUV420PGrabber::draw() {
assert(win_w);
assert(win_h);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDrawBuffer(GL_BACK);
glDisable(GL_DEPTH_TEST);
//glReadBuffer(GL_COLOR_ATTACHMENT0);
//glBlitFramebuffer(0, 0, win_w, win_h, 0, 0, win_w, win_h, GL_COLOR_BUFFER_BIT, GL_LINEAR);
glViewport(0, 0, win_w, win_h);
// printf("win: %d x %d\n", win_w, win_h);
bindVAO();
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, scene_tex);
glUseProgram(prog_pt);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
unbindVAO();
glUseProgram(0);
}
void YUV420PGrabber::endGrab() {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, scene_tex);
glDisable(GL_DEPTH_TEST);
GLenum drawbufs[] = { GL_COLOR_ATTACHMENT1 };
glDrawBuffers(1, drawbufs);
glClear(GL_COLOR_BUFFER_BIT); // we don't need this but it's just nice to have a clean slate ^.^
bindVAO();
{
// render Y planes
glUseProgram(prog_y);
for(std::vector<YUV420PSize>::iterator it = sizes.begin(); it != sizes.end(); ++it) {
YUV420PSize& s = *it;
glViewport(s.y_viewport_x, s.y_viewport_y, s.yw, s.yh);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
// render U planes
glUseProgram(prog_u);
for(std::vector<YUV420PSize>::iterator it = sizes.begin(); it != sizes.end(); ++it) {
YUV420PSize& s = *it;
glViewport(s.u_viewport_x, s.u_viewport_y, s.uvw, s.uvh);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
// render V planes
glUseProgram(prog_v);
for(std::vector<YUV420PSize>::iterator it = sizes.begin(); it != sizes.end(); ++it) {
YUV420PSize& s = *it;
glViewport(s.v_viewport_x, s.v_viewport_y, s.uvw, s.uvh);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
}
unbindVAO();
glUseProgram(0);
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDrawBuffer(GL_BACK);
glViewport(0,0, win_w, win_h);
}
void ModelMesh::draw() const {
bindVAO();
glDrawElements(GL_TRIANGLES, indiceCount, GL_UNSIGNED_INT, 0);
unbindVAO();
}
