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Diffstat (limited to 'progs/tests/drawbuffers.c')
-rw-r--r--progs/tests/drawbuffers.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/progs/tests/drawbuffers.c b/progs/tests/drawbuffers.c
index d75a870c26b..7a19933e627 100644
--- a/progs/tests/drawbuffers.c
+++ b/progs/tests/drawbuffers.c
@@ -43,6 +43,8 @@ Display(void)
glUseProgram_func(Program);
+ glEnable(GL_DEPTH_TEST);
+
/* draw to user framebuffer */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FBobject);
@@ -68,18 +70,23 @@ Display(void)
glPopMatrix();
/* read from user framebuffer */
- /* bottom half = colorbuffer 0 */
+ /* left half = colorbuffer 0 */
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
- glReadPixels(0, 0, Width, Height / 2, GL_RGBA, GL_UNSIGNED_BYTE,
+ glPixelStorei(GL_PACK_ROW_LENGTH, Width);
+ glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+ glReadPixels(0, 0, Width / 2, Height, GL_RGBA, GL_UNSIGNED_BYTE,
buffer);
- /* top half = colorbuffer 1 */
+
+ /* right half = colorbuffer 1 */
glReadBuffer(GL_COLOR_ATTACHMENT1_EXT);
- glReadPixels(0, Height/2, Width, Height - Height / 2,
+ glPixelStorei(GL_PACK_SKIP_PIXELS, Width / 2);
+ glReadPixels(Width / 2, 0, Width - Width / 2, Height,
GL_RGBA, GL_UNSIGNED_BYTE,
- buffer + Width * (Height / 2) * 4);
+ buffer);
/* draw to window */
glUseProgram_func(0);
+ glDisable(GL_DEPTH_TEST);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glWindowPos2iARB(0, 0);
glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);