[PATCH] Add a draw-pixel-with-texture testcase

[Yuanhan Liu]

Add a draw-pixel-with-texture testcase to check if sampling is happened
while drawing pixels by glDrawPixels.

Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
---
 tests/all.tests                         |    1 +
 tests/general/CMakeLists.gl.txt         |    1 +
 tests/general/draw-pixel-with-texture.c |   80 +++++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+), 0 deletions(-)
 create mode 100644 tests/general/draw-pixel-with-texture.c

diff --git a/tests/all.tests b/tests/all.tests
index 48ce2cb..851db11 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -242,6 +242,7 @@ general['draw-elements-user'] = PlainExecTest(['draw-elements', '-auto', 'user']
 add_plain_test(general, 'draw-elements-vs-inputs')
 add_plain_test(general, 'draw-instanced')
 add_plain_test(general, 'draw-instanced-divisor')
+add_plain_test(general, 'draw-pixel-with-texture')
 add_plain_test(general, 'draw-vertices')
 general['draw-vertices-user'] = PlainExecTest(['draw-vertices', '-auto', 'user'])
 add_plain_test(general, 'draw-vertices-half-float')
diff --git a/tests/general/CMakeLists.gl.txt b/tests/general/CMakeLists.gl.txt
index 2cfc7be..58cbaa1 100644
--- a/tests/general/CMakeLists.gl.txt
+++ b/tests/general/CMakeLists.gl.txt
@@ -42,6 +42,7 @@ ENDIF (UNIX)
 add_executable (draw-elements-vs-inputs draw-elements-vs-inputs.c)
 add_executable (draw-instanced draw-instanced.c)
 add_executable (draw-instanced-divisor draw-instanced-divisor.c)
+add_executable (draw-pixel-with-texture draw-pixel-with-texture.c)
 add_executable (draw-sync draw-sync.c)
 add_executable (draw-vertices draw-vertices.c)
 add_executable (draw-vertices-half-float draw-vertices-half-float.c)
diff --git a/tests/general/draw-pixel-with-texture.c b/tests/general/draw-pixel-with-texture.c
new file mode 100644
index 0000000..c39d35e
--- /dev/null
+++ b/tests/general/draw-pixel-with-texture.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Yuanhan Liu <yuanhan.liu at linux.intel.com>
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 100, piglit_height = 100;
+int piglit_window_mode = GLUT_RGB | GLUT_DOUBLE;
+
+
+enum piglit_result
+piglit_display(void)
+{
+	GLboolean pass = GL_TRUE;
+	GLfloat tex_data[2 * 2 * 4] = {
+		1, 0, 0, 1, 	1, 0, 0, 1,
+		1, 0, 0, 1, 	1, 0, 0, 1,
+	};
+	GLfloat pixels[20 * 20 * 4];
+	GLfloat expected[4] = {0.2, 0, 0, 1};
+	int i;
+
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGBA, GL_FLOAT, tex_data);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+	glTexCoord2f(0.5, 0.5);
+	glEnable(GL_TEXTURE_2D);
+
+	for (i = 0; i < 20 * 20 * 4; i += 4) {
+		pixels[i + 0] = 0.2;
+		pixels[i + 1] = 1;
+		pixels[i + 2] = 0;
+		pixels[i + 3] = 1;
+	}
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glDrawPixels(20, 20, GL_RGBA, GL_FLOAT, pixels);
+
+	/* Here just sample a small set of pixels */
+	pass &= piglit_probe_pixel_rgba(5, 5, expected);
+	pass &= piglit_probe_pixel_rgba(7, 12, expected);
+	pass &= piglit_probe_pixel_rgba(10, 10, expected);
+	pass &= piglit_probe_pixel_rgba(18, 18, expected);
+
+	glutSwapBuffers();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+	glClearColor(0.0, 0.0, 0.0, 1.0);
+}
-- 
1.7.4.4