arb_clear_texture: add a trivial test

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>

4 files changed, 154 insertions, 0 deletions

diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
index a8c469cea..ae99d5a88 100644
--- a/tests/spec/CMakeLists.txt
+++ b/tests/spec/CMakeLists.txt
@@ -2,6 +2,7 @@ add_subdirectory (amd_performance_monitor)
 add_subdirectory (arb_base_instance)
 add_subdirectory (arb_buffer_storage)
 add_subdirectory (arb_clear_buffer_object)
+add_subdirectory (arb_clear_texture)
 add_subdirectory (arb_color_buffer_float)
 add_subdirectory (arb_compute_shader)
 add_subdirectory (arb_debug_output)
diff --git a/tests/spec/arb_clear_texture/CMakeLists.gl.txt b/tests/spec/arb_clear_texture/CMakeLists.gl.txt
new file mode 100644
index 000000000..c77fd790f
--- /dev/null
+++ b/tests/spec/arb_clear_texture/CMakeLists.gl.txt
@@ -0,0 +1,13 @@
+include_directories(
+	${GLEXT_INCLUDE_DIR}
+	${OPENGL_INCLUDE_PATH}
+)
+
+link_libraries (
+	piglitutil_${piglit_target_api}
+	${OPENGL_gl_LIBRARY}
+)
+
+piglit_add_executable (arb_clear_texture-simple simple.c)
+
+# vim: ft=cmake:
diff --git a/tests/spec/arb_clear_texture/CMakeLists.txt b/tests/spec/arb_clear_texture/CMakeLists.txt
new file mode 100644
index 000000000..144a306f4
--- /dev/null
+++ b/tests/spec/arb_clear_texture/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/spec/arb_clear_texture/simple.c b/tests/spec/arb_clear_texture/simple.c
new file mode 100644
index 000000000..7e42a34b5
--- /dev/null
+++ b/tests/spec/arb_clear_texture/simple.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2014 Ilia Mirkin
+ *
+ * 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.
+ */
+
+/** @file simple.c
+ *
+ * A very simple test of basic ClearTexImage and ClearTexSubImage
+ * functionality. Clears 2 textures, and puts them up side-by-side for
+ * display.
+ *
+ * The output should look like
+ *
+ * +-----+--+--+
+ * |     |  |  |
+ * |     |  |  |
+ * +-----+--+--+
+ *
+ * With the boxes from left to right being green, blue, and yellow.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 13;
+
+	config.window_width = 128;
+	config.window_height = 64;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static GLuint texture[2];
+static const float green[3] = {0.0, 1.0, 0.0};
+static const float red[3] = {1.0, 0.0, 0.0};
+static const float blue[3] = {0.0, 0.0, 1.0};
+static const float yellow[3] = {1.0, 1.0, 0.0};
+
+void
+piglit_init(int argc, char **argv)
+{
+	int i;
+	float *color = malloc(sizeof(float) * 64 * 64 * 3);
+
+	piglit_require_extension("GL_ARB_clear_texture");
+	piglit_require_extension("GL_EXT_framebuffer_object");
+
+	/* Create color data for texture */
+	for (i = 0; i < 64 * 64; i++) {
+		memcpy(&color[i*3], &red[0], sizeof(red));
+	}
+
+	glGenTextures(2, texture);
+
+	/* Initialize textures to all red. */
+	glBindTexture(GL_TEXTURE_2D, texture[0]);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 64, 64,
+		     0, GL_RGB, GL_FLOAT, color);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	glBindTexture(GL_TEXTURE_2D, texture[1]);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 64, 64,
+		     0, GL_RGB, GL_FLOAT, color);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	free(color);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	bool pass = true;
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	/* Clear the whole first texture with green */
+	glClearTexImage(texture[0], 0, GL_RGB, GL_FLOAT, green);
+	pass &= piglit_check_gl_error(GL_NO_ERROR);
+
+	/* Clear the left half of the second texture with blue */
+	glClearTexSubImage(texture[1], 0,
+			   0, 0, 0,
+			   32, 64, 1,
+			   GL_RGB, GL_FLOAT, blue);
+	pass &= piglit_check_gl_error(GL_NO_ERROR);
+	/* And the right half with yellow */
+	glClearTexSubImage(texture[1], 0,
+			   32, 0, 0,
+			   32, 64, 1,
+			   GL_RGB, GL_FLOAT, yellow);
+	pass &= piglit_check_gl_error(GL_NO_ERROR);
+
+	/* Render both textures to the screen */
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
+	glEnable(GL_TEXTURE_2D);
+	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+	glBindTexture(GL_TEXTURE_2D, texture[0]);
+	piglit_draw_rect_tex(0, 0, 64, 64, 0, 0, 1, 1);
+
+	glBindTexture(GL_TEXTURE_2D, texture[1]);
+	piglit_draw_rect_tex(64, 0, 64, 64, 0, 0, 1, 1);
+
+	glDisable(GL_TEXTURE_2D);
+	glDeleteTextures(2, texture);
+
+	/* Check for the 3 separate regions */
+	pass &= piglit_probe_rect_rgb(0, 0, 64, 64, green);
+	pass &= piglit_probe_rect_rgb(64, 0, 32, 64, blue);
+	pass &= piglit_probe_rect_rgb(96, 0, 32, 64, yellow);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}