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-rw-r--r--progs/tests/fbotest2.c46
1 files changed, 37 insertions, 9 deletions
diff --git a/progs/tests/fbotest2.c b/progs/tests/fbotest2.c
index 872b46279e6..faf0dd87484 100644
--- a/progs/tests/fbotest2.c
+++ b/progs/tests/fbotest2.c
@@ -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__);
}