[Piglit] [PATCH 2/8] arb_texture_view: Test uploading into a view with nonzero MinLevel

[Chris Forbes]

Tests that the correct levels are overwritten when uploading texture
data through a view with a nonzero MinLevel.

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
---
 tests/all.py                                     |   1 +
 tests/spec/arb_texture_view/CMakeLists.gl.txt    |   1 +
 tests/spec/arb_texture_view/texsubimage-levels.c | 129 +++++++++++++++++++++++
 3 files changed, 131 insertions(+)
 create mode 100644 tests/spec/arb_texture_view/texsubimage-levels.c

diff --git a/tests/all.py b/tests/all.py
index 9f68690..fa642b8 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1969,6 +1969,7 @@ arb_texture_view['rendering-target'] = concurrent_test('arb_texture_view-renderi
 arb_texture_view['rendering-levels'] = concurrent_test('arb_texture_view-rendering-levels')
 arb_texture_view['lifetime-format'] = concurrent_test('arb_texture_view-lifetime-format')
 arb_texture_view['getteximage-srgb'] = concurrent_test('arb_texture_view-getteximage-srgb')
+arb_texture_view['texsubimage-levels'] = concurrent_test('arb_texture_view-texsubimage-levels')
 
 tdfx_texture_compression_fxt1 = Group()
 spec['3DFX_texture_compression_FXT1'] = tdfx_texture_compression_fxt1
diff --git a/tests/spec/arb_texture_view/CMakeLists.gl.txt b/tests/spec/arb_texture_view/CMakeLists.gl.txt
index cad7500..bfa9460 100644
--- a/tests/spec/arb_texture_view/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_view/CMakeLists.gl.txt
@@ -18,5 +18,6 @@ piglit_add_executable(arb_texture_view-queries queries.c)
 piglit_add_executable(arb_texture_view-rendering-target rendering_target.c common.c)
 piglit_add_executable(arb_texture_view-rendering-levels rendering_levels.c common.c)
 piglit_add_executable(arb_texture_view-lifetime-format lifetime_format.c common.c)
+piglit_add_executable(arb_texture_view-texsubimage-levels texsubimage-levels.c common.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_texture_view/texsubimage-levels.c b/tests/spec/arb_texture_view/texsubimage-levels.c
new file mode 100644
index 0000000..6457393
--- /dev/null
+++ b/tests/spec/arb_texture_view/texsubimage-levels.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright © 2014 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.
+ *
+ * Author: Chris Forbes <chrisf at ijw.co.nz>
+ */
+
+/**
+ *  \file
+ *  This tests that TexSubImage* into a view behaves correctly when the view
+ *  has a nonzero MinLevel.
+ *
+ */
+
+#include "piglit-util-gl-common.h"
+#include "common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 15;
+	config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}
+
+#define NUM_LEVELS 7
+#define VIEW_MIN_LEVEL 2
+#define VIEW_NUM_LEVELS 3
+#define TEX_SIZE 64
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLuint tex, view;
+	int i, j;
+	bool pass = true;
+
+	piglit_require_extension("GL_ARB_texture_storage");
+	piglit_require_extension("GL_ARB_texture_view");
+
+	/* build a texture with full miptree */
+	glGenTextures(1, &tex);
+	glBindTexture(GL_TEXTURE_2D, tex);
+	glTexStorage2D(GL_TEXTURE_2D, NUM_LEVELS,
+		GL_RGBA8,
+		TEX_SIZE,
+		TEX_SIZE);
+
+	for (i=0; i < NUM_LEVELS; i++) {
+		int dim = TEX_SIZE >> i;
+		GLubyte *pixels = create_solid_image(dim, dim,
+			1, 4, i);
+		glTexSubImage2D(GL_TEXTURE_2D,
+			i, 0, 0, dim, dim,
+			GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+		free(pixels);
+	}
+
+	/* create a view to a subset of the layers */
+	glGenTextures(1, &view);
+	glTextureView(view, GL_TEXTURE_2D, tex, GL_RGBA8,
+		VIEW_MIN_LEVEL, VIEW_NUM_LEVELS,
+		0, 1);
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	/* upload through the view */
+	glBindTexture(GL_TEXTURE_2D, view);
+	for (i = 0; i < VIEW_NUM_LEVELS; i++) {
+		int dim = TEX_SIZE >> (VIEW_MIN_LEVEL + i);
+		GLubyte *pixels = create_solid_image(dim, dim,
+			1, 4, i + NUM_LEVELS);
+		glTexSubImage2D(GL_TEXTURE_2D,
+			i, 0, 0, dim, dim,
+			GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+		free(pixels);
+	}
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	/* bind the underlying texture and readback */
+	glBindTexture(GL_TEXTURE_2D, tex);
+	for (i = 0; i < NUM_LEVELS; i++) {
+		/* the levels inside the view should have been replaced.
+		 * everything else should be untouched.
+		 */
+
+		int color_index = (i < VIEW_MIN_LEVEL ||
+			i >= VIEW_MIN_LEVEL + VIEW_NUM_LEVELS) ? i : (i + NUM_LEVELS - VIEW_MIN_LEVEL);
+		float expected_color[4];
+		int dim = TEX_SIZE >> i;
+
+		printf("Testing level %d\n", i);
+
+		for (j = 0; j < 4; j++)
+			expected_color[j] = Colors[color_index][j] / 255.0f;
+
+		pass = piglit_probe_texel_rect_rgba(GL_TEXTURE_2D,
+			i, 0, 0, dim, dim,
+			expected_color) && pass;
+	}
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
-- 
1.8.5.4