From: Marek Olšák <[email protected]>
The first case had had the change already, but lacked an explanation.
See the OpenGL 4.5 Core spec, section 14.5.1, figure 14.2, page 450.
---
tests/glean/tfbo.cpp | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/tests/glean/tfbo.cpp b/tests/glean/tfbo.cpp
index eb66af4..3662d5d 100644
--- a/tests/glean/tfbo.cpp
+++ b/tests/glean/tfbo.cpp
@@ -607,6 +607,8 @@ FBOTest::testRender2SingleTexture(void)
case GL_TEXTURE_1D:
glBegin(GL_LINES);
glVertex3f(TEXSIZE / 4, 0.5,
0.3);
+ /* + 0.25 pixels because the
last line pixel
+ * isn't drawn according to the
GL spec */
glVertex3f(TEXSIZE * 5 / 8 +
0.25, 0.5, 0.3);
glEnd();
break;
@@ -637,7 +639,9 @@ FBOTest::testRender2SingleTexture(void)
case GL_TEXTURE_1D:
glBegin(GL_LINES);
glVertex3f(TEXSIZE / 2, 0.5,
0.3);
- glVertex3f(TEXSIZE * 7 / 8,
0.5, 0.3);
+ /* + 0.25 pixels because the
last line pixel
+ * isn't drawn according to the
GL spec */
+ glVertex3f(TEXSIZE * 7 / 8 +
0.25, 0.5, 0.3);
glEnd();
break;
case GL_TEXTURE_2D:
@@ -668,7 +672,9 @@ FBOTest::testRender2SingleTexture(void)
case GL_TEXTURE_1D:
glBegin(GL_LINES);
glVertex3f(0, 0.5, 0.2);
- glVertex3f(TEXSIZE, 0.5, 0.2);
+ /* + 0.25 pixels because the last line
pixel
+ * isn't drawn according to the GL spec
*/
+ glVertex3f(TEXSIZE + 0.25, 0.5, 0.2);
glEnd();
break;
case GL_TEXTURE_2D:
--
2.7.4
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