[Piglit] [PATCH 6/8] fbo: Use renderbuffers instead of textures

[Ian Romanick]

From: Ian Romanick <ian.d.romanick at intel.com>

This allows fbo-blit-stretch to run on platforms that support
ARB_framebuffer_object but not ARB_texture_non_power_of_two.

Coneptually similar to 7b3f6d5.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
---
 tests/fbo/fbo-blit-stretch.cpp | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/tests/fbo/fbo-blit-stretch.cpp b/tests/fbo/fbo-blit-stretch.cpp
index 935d0d4..da85335 100644
--- a/tests/fbo/fbo-blit-stretch.cpp
+++ b/tests/fbo/fbo-blit-stretch.cpp
@@ -321,22 +321,22 @@ run_test(const TestCase &test)
 
 	GLboolean pass;
 
-	GLuint tex;
+	GLuint rbo;
 	GLuint fbo;
 	GLenum status;
 
 	glGenFramebuffers(1, &fbo);
 	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 
-	tex = piglit_rgbw_texture(GL_RGBA, test.srcW, test.srcH, GL_FALSE, GL_TRUE, GL_UNSIGNED_NORMALIZED);
+	glGenRenderbuffers(1, &rbo);
+	glBindRenderbuffer(GL_RENDERBUFFER, rbo);
+	glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA, test.srcW, test.srcH);
+	glBindRenderbuffer(GL_RENDERBUFFER, 0);
 
-	glBindTexture(GL_TEXTURE_2D, tex);
-
-	glFramebufferTexture2D(GL_FRAMEBUFFER,
-			       GL_COLOR_ATTACHMENT0,
-			       GL_TEXTURE_2D,
-			       tex,
-			       0);
+	glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+				  GL_COLOR_ATTACHMENT0,
+				  GL_RENDERBUFFER,
+				  rbo);
 	if (!piglit_check_gl_error(GL_NO_ERROR))
 		piglit_report_result(PIGLIT_FAIL);
 
@@ -344,6 +344,12 @@ run_test(const TestCase &test)
 	if (status != GL_FRAMEBUFFER_COMPLETE) {
 		pass = GL_TRUE;
 	} else {
+		GLubyte *image = piglit_rgbw_image_ubyte(test.srcW, test.srcH,
+							 GL_TRUE);
+		glDrawPixels(test.srcW, test.srcH, GL_RGBA, GL_UNSIGNED_BYTE,
+			     image);
+		free(image);
+
 		glViewport(0, 0, piglit_width, piglit_height);
 		piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 
@@ -364,7 +370,7 @@ run_test(const TestCase &test)
 
 	glBindFramebuffer(GL_FRAMEBUFFER, piglit_winsys_fbo);
 	glDeleteFramebuffers(1, &fbo);
-	glDeleteTextures(1, &tex);
+	glDeleteRenderbuffers(1, &rbo);
 
 	return pass;
 }
-- 
2.9.4