[Piglit] [PATCH] getteximage-simple: Stress an i965 blitter path
Nanley Chery
nanleychery at gmail.com
Wed May 30 20:39:29 UTC 2018
Change the dimension of the texture to test how i965 handles having a
row pitch too large for the BLT engine.
---
tests/texturing/getteximage-simple.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/tests/texturing/getteximage-simple.c b/tests/texturing/getteximage-simple.c
index 273f2b36c..9a3678acf 100644
--- a/tests/texturing/getteximage-simple.c
+++ b/tests/texturing/getteximage-simple.c
@@ -8,6 +8,10 @@
* texture images is executed before the readback.
*
* This used to crash for R300+bufmgr.
+ *
+ * This also used to stress test the blit methods in i965. The BLT engine only
+ * supports pitch sizes up to but not including 32768 bytes. BLORP supports
+ * even larger sizes.
*/
#include "piglit-util-gl.h"
@@ -21,19 +25,26 @@ PIGLIT_GL_TEST_CONFIG_BEGIN
PIGLIT_GL_TEST_CONFIG_END
-static GLubyte data[4096]; /* 64*16*4 */
+#define BYTES_PER_PIXEL 4
+#define WIDTH (32768 / BYTES_PER_PIXEL)
+#define HEIGHT 2 // Ensure that the pitch is used without using too much memory
+#define IMAGE_SIZE (WIDTH * BYTES_PER_PIXEL * HEIGHT)
+
+static GLubyte data[IMAGE_SIZE];
static int test_getteximage(void)
{
- GLubyte compare[4096];
+ GLubyte compare[IMAGE_SIZE];
int i;
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, compare);
- for(i = 0; i < 4096; ++i) {
+ for(i = 0; i < IMAGE_SIZE; ++i) {
if (data[i] != compare[i]) {
printf("GetTexImage() returns incorrect data in byte %i\n", i);
- printf(" corresponding to (%i,%i) channel %i\n", i / 64, (i / 4) % 16, i % 4);
+ printf(" corresponding to (%i,%i) channel %i\n",
+ i / WIDTH, (i / BYTES_PER_PIXEL) % HEIGHT,
+ i % BYTES_PER_PIXEL);
printf(" expected: %i\n", data[i]);
printf(" got: %i\n", compare[i]);
return 0;
@@ -75,14 +86,14 @@ void piglit_init(int argc, char **argv)
GLuint tex;
int i;
- for(i = 0; i < 4096; ++i)
+ for(i = 0; i < IMAGE_SIZE; ++i)
data[i] = rand() & 0xff;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 64, 16, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, WIDTH, HEIGHT, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
piglit_gen_ortho_projection(0.0, 1.0, 0.0, 1.0, -2.0, 6.0, GL_FALSE);
}
--
2.17.0
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