From 71c21b1157c4f9a96453bdfcb9f4dda091360afd Mon Sep 17 00:00:00 2001
From: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Date: Wed, 13 Sep 2023 07:37:56 -0400
Subject: [PATCH] add a test to verify that null attachments don't clamp fb
 size
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targets mesa/mesa#9119

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/piglit/-/merge_requests/838>
---
 tests/spec/gl-3.3/fb-null-attachment.shader_test | 33 ++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 tests/spec/gl-3.3/fb-null-attachment.shader_test

diff --git a/tests/spec/gl-3.3/fb-null-attachment.shader_test b/tests/spec/gl-3.3/fb-null-attachment.shader_test
new file mode 100644
index 000000000..c0edae516
--- /dev/null
+++ b/tests/spec/gl-3.3/fb-null-attachment.shader_test
@@ -0,0 +1,33 @@
+# Verify that a null framebuffer attachment doesn't affect framebuffer size
+#
+# This verifies that drivers aren't clamping framebuffers to a smaller size in the
+# presence of null framebuffer attachments
+
+[require]
+GL >= 3.3
+GLSL >= 3.30
+SIZE 1920 1080
+
+[vertex shader passthrough]
+
+[fragment shader]
+#version 330
+
+out vec4 outcolor;
+
+void main()
+{
+	outcolor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+
+[test]
+texture rgbw 0 (1920, 1080) GL_RGBA8
+texture rgbw 1 (1920, 1080) GL_RGBA8
+
+fb tex 2d 0 -1 1
+
+clear color 0.2 0.2 0.2 0.2
+clear
+draw rect -1 -1 2 2
+
+probe all rgba 0.0 1.0 0.0 1.0
-- 
2.11.4.GIT