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progs/tests: add additional FBO->window test paths (disabled) 

Normally use glReadPixels + glDrawPixels.  Add debug/test paths for
glCopyPixels and glBlitFramebuffer.
This commit is contained in:
Brian Paul 2010-03-10 10:59:02 -07:00
parent 7a2e32d684
commit daad54f6ce
1 changed files with 37 additions and 9 deletions
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46
progs/tests/fbotest2.c
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@ -33,7 +33,8 @@ CheckError(int line)
static void
Display( void )
{
GLubyte *buffer = malloc(Width * Height * 4);
GLboolean copyPix = GL_FALSE;
GLboolean blitPix = GL_FALSE;
GLenum status;
CheckError(__LINE__);
@ -63,16 +64,43 @@ Display( void )
glutSolidTeapot(2.0);
glPopMatrix();
/* read from user framebuffer */
glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
if (copyPix) {
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, MyFB);
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
glDrawBuffer(GL_BACK);
/* draw to window */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
glWindowPos2iARB(0, 0);
glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
glWindowPos2iARB(0, 0);
glCopyPixels(0, 0, Width, Height, GL_COLOR);
}
else if (blitPix) {
glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, MyFB);
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
glDrawBuffer(GL_BACK);
glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
glBlitFramebufferEXT(0, 0, Width, Height,
0, 0, Width, Height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
else {
GLubyte *buffer = malloc(Width * Height * 4);
/* read from user framebuffer */
glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
/* draw to window */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
glWindowPos2iARB(0, 0);
glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
free(buffer);
}
free(buffer);
glutSwapBuffers();
CheckError(__LINE__);
}