ARB_texture_view: Add query tests for gl state effected by this extension

Tests the queryable state from ARB_texture_view extension is correct.
Includes GL_TEXTURE_IMMUTABLE_LEVELS,GL_TEXTURE_VIEW_MIN_LEVEL,
 GL_TEXTURE_VIEW_NUM_LEVELS, GL_TEXTURE_IMMUTABLE_FORMAT.

Tested on Nvidia Quadro 600, all subtests pass.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Jon Ashburn <jon@lunarg.com>

3 files changed, 309 insertions, 0 deletions

diff --git a/tests/all.tests b/tests/all.tests
index ef3260502..59a2b99b6 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -1555,6 +1555,7 @@ arb_texture_view['immutable_levels'] = concurrent_test('arb_texture_view-texture
 arb_texture_view['params'] = concurrent_test('arb_texture_view-params')
 arb_texture_view['formats'] = concurrent_test('arb_texture_view-formats')
 arb_texture_view['targets'] = concurrent_test('arb_texture_view-targets')
+arb_texture_view['queries'] = concurrent_test('arb_texture_view-queries')
 
 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 193aff945..6945a05fc 100644
--- a/tests/spec/arb_texture_view/CMakeLists.gl.txt
+++ b/tests/spec/arb_texture_view/CMakeLists.gl.txt
@@ -13,5 +13,6 @@ piglit_add_executable(arb_texture_view-texture-immutable-levels texture-immutabl
 piglit_add_executable(arb_texture_view-params params.c)
 piglit_add_executable(arb_texture_view-formats formats.c common.c)
 piglit_add_executable(arb_texture_view-targets targets.c common.c)
+piglit_add_executable(arb_texture_view-queries queries.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/arb_texture_view/queries.c b/tests/spec/arb_texture_view/queries.c
new file mode 100644
index 000000000..368b8c51c
--- /dev/null
+++ b/tests/spec/arb_texture_view/queries.c
@@ -0,0 +1,307 @@
+/*
+ * Copyright © 2013 LunarG, Inc.
+ *
+ * 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: Jon Ashburn <jon@lunarg.com>
+ */
+
+/**
+ * Tests GL_ARB_texture_view  queries of new state added by this extension
+ *
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 15;
+	config.supports_gl_core_version = 31;
+
+	config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+/**
+ * make sure default intial state is correct for textureView
+ * In OpenGL Core 4.3 spec see  table 23.15 for default values.
+ */
+static bool
+query_default_state(void)
+{
+	bool pass = true;
+	GLuint tex[2];
+	GLint param;
+
+	glGenTextures(2,tex);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, tex[0]);
+	glTexStorage2D(GL_TEXTURE_CUBE_MAP, 7, GL_R32F, 64, 64);
+	glTextureView(tex[1], GL_TEXTURE_CUBE_MAP, tex[0], GL_RG16I, 2, 4, 0, 6);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, tex[1]);
+	glDeleteTextures(1, &tex[1]);
+	/* tex[1] which is bound to GL_TEXTURE_CUBE_MAP is deleted */
+
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_VIEW_MIN_LEVEL,
+							&param);
+	if (param != 0) {
+		printf("bad default of min_level, expected 0 got %u\n", param);
+		pass = false;
+	}
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_VIEW_NUM_LEVELS,
+							&param);
+	if (param != 0) {
+		printf("bad default of num_levels, expected 0 got %u\n", param);
+		pass = false;
+	}
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_VIEW_MIN_LAYER,
+							&param);
+	if (param != 0) {
+		printf("bad default of min_layer, expected 0 got %u\n", param);
+		pass = false;
+	}
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_VIEW_NUM_LAYERS,
+							&param);
+	if (param != 0) {
+		printf("bad default of num_layers, expected 0 got %u\n", param);
+		pass = false;
+	}
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_IMMUTABLE_FORMAT,
+							&param);
+	if (param != 0) {
+		printf("bad default of immutable_format, expected 0 got %u\n",
+		       param);
+		pass = false;
+	}
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_IMMUTABLE_LEVELS,
+							&param);
+	if (param != 0) {
+		printf("bad default of immutable_levels, expected 0 got %u\n",
+		       param);
+		pass = false;
+	}
+	glDeleteTextures(1, tex);
+
+	return pass;
+}
+
+/**
+ * This tests min_levels, num_levels, immutable_levels  and imutable_format.
+ * note: see params test for more min/num  level query testing
+ *
+ * In OpenGL Core 4.3 spec see section 8.18:
+ *    "The minlevel and minlayer parameters are relative to the view of
+ *    origtexture. If numlayers or numlevels extend beyond origtexture, they
+ *    are clamped to the maximum extent of the original texture.
+ *    If the command is successful, the texture parameters in <texture> are
+ *     updated as follows:
+ *       - TEXTURE_IMMUTABLE_FORMAT is set to TRUE.
+ *
+ *       - TEXTURE_IMMUTABLE_LEVELS is set to the value of
+ *         TEXTURE_IMMUTABLE_LEVELS from the original texture.
+ *
+ *       - TEXTURE_VIEW_MIN_LEVEL is set to <minlevel> plus the value of
+ *         TEXTURE_VIEW_MIN_LEVEL from the original texture.
+ *
+ *       - TEXTURE_VIEW_NUM_LEVELS is set to the lesser of numlevels and the
+ *         value of TEXTURE_VIEW_NUM_LEVELS for origtexture minus minlevels."
+ * In the ARB_texture_view extension registry spec see this for chained views:
+ *   "(3) Is it possible to create a texture view using an original texture
+ *   which is itself a view? And if so, how are the level/layer values
+ *   interpreted?
+ *
+ *   RESOLVED: It is legal. For example, let's say texture 1 is a 2D_ARRAY
+ *   texture with 200 layers. It will have TEXTURE_VIEW_MIN_LAYER=0,
+ *   TEXTURE_VIEW_NUM_LAYERS=200. Then we create texture 2 from texture 1 using
+ *   <minlayer>=100, <numlayers>=100. It will have TEXTURE_VIEW_MIN_LAYER=100,
+ *   TEXTURE_VIEW_NUM_LAYERS=100. Then we create texture 3 from texture 2 using
+ *   <minlayer>=50, <numlayers>=50. It will have TEXTURE_VIEW_MIN_LAYER=150,
+ *   TEXTURE_VIEW_NUM_LAYERS=50."
+ */
+static bool
+query_levels_test(void)
+{
+	GLuint tex[2], viewtex, l;
+	GLint param;
+	bool pass = true;
+
+	glGenTextures(2, tex);
+
+	/* test the view causes immutable_format to be set */
+	glBindTexture(GL_TEXTURE_2D, tex[0]);
+	glTexStorage2D(GL_TEXTURE_2D, 6, GL_R32F, 16, 32);
+	glTextureView(tex[1], GL_TEXTURE_2D, tex[0], GL_RG16F, 0, 1, 0, 1);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	glBindTexture(GL_TEXTURE_2D, tex[1]);
+	glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_IMMUTABLE_FORMAT, &param);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	if (param != GL_TRUE) {
+		printf("bad query of immutable_format\n");
+		pass = false;
+	}
+	glDeleteTextures(2,tex);
+
+	/**
+	 * test min_levels are additive using chained views
+	 * test immutable_levels  get set correctly based on origtexture
+	 * test num_levels are correct for chained views
+	 */
+	glGenTextures(2,tex);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, tex[0]);
+	glTexStorage2D(GL_TEXTURE_CUBE_MAP, 7, GL_R32F, 64, 64);
+	glTextureView(tex[1], GL_TEXTURE_CUBE_MAP,tex[0], GL_RG16I, 2, 4, 0, 6);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	glBindTexture(GL_TEXTURE_CUBE_MAP, tex[1]);
+	glGetTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_IMMUTABLE_LEVELS,
+						&param);
+	if (param != 7) {
+		printf("bad query of immutable_levels, expected 7 got %u\n",
+		       param);
+		pass = false;
+	}
+	for (l = 0; l < 4; l++) {
+		glGenTextures(1, &viewtex);
+		glTextureView(viewtex, GL_TEXTURE_CUBE_MAP, tex[1], GL_RG16F,
+			      l, 4, 0, 6);
+		glBindTexture(GL_TEXTURE_CUBE_MAP, viewtex);
+		glGetTexParameteriv(GL_TEXTURE_CUBE_MAP,
+				    GL_TEXTURE_VIEW_MIN_LEVEL, &param);
+		if (param != (2 + l)) {
+			glDeleteTextures(1, &viewtex);
+			printf("bad query of view_min_level expected %u got %u\n",
+			       2+l, param);
+			pass = false;
+			break;
+		}
+		glGetTexParameteriv(GL_TEXTURE_CUBE_MAP,
+				    GL_TEXTURE_IMMUTABLE_LEVELS, &param);
+		if (param != 7) {
+			glDeleteTextures(1, &viewtex);
+			printf("query of immutable_levels not tracking orig, expected 7 got %u\n",
+			       param);
+			pass = false;
+			break;
+		}
+		glGetTexParameteriv(GL_TEXTURE_CUBE_MAP,
+				    GL_TEXTURE_VIEW_NUM_LEVELS,	&param);
+		if (param != (4 - l)) {
+			glDeleteTextures(1, &viewtex);
+			printf("bad query of view_num_levels expected %u got %u\n",
+			       4 - l, param);
+			pass = false;
+			break;
+		}
+		glDeleteTextures(1, &viewtex);
+	}
+	glDeleteTextures(2, tex);
+
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	return pass;
+}
+/**
+ *
+ */
+/**
+ * This tests correct queries of min_layers, num_layers.
+ * note: see params test for more min/num  layers query testing
+ *
+ * In OpenGL Core 4.3 spec see section 8.18:
+ *    "The minlevel and minlayer parameters are relative to the view of
+ *    origtexture. If numlayers or numlevels extend beyond origtexture, they
+ *    are clamped to the maximum extent of the original texture.
+ *    If the command is successful, the texture parameters in <texture> are
+ *     updated as follows:
+ *       - TEXTURE_VIEW_MIN_LAYER is set to <minlayer> plus the value of
+ *         TEXTURE_VIEW_MIN_LAYER from the original texture.
+ *
+ *       - TEXTURE_VIEW_NUM_LAYERS is set to the lesser of numlayerss and the
+ *         value of TEXTURE_VIEW_NUM_LAYERS for origtexture minus minlayers."
+ */
+
+static bool
+query_layers_state(void)
+{
+	bool pass = true;
+	GLuint tex[2], viewtex, l;
+	GLint param;
+
+	glGenTextures(2, tex);
+	glBindTexture(GL_TEXTURE_2D_ARRAY, tex[0]);
+	glTexStorage3D(GL_TEXTURE_2D_ARRAY, 7, GL_RG16F, 64, 64, 10);
+	glTextureView(tex[1], GL_TEXTURE_2D_ARRAY,tex[0], GL_RG16I, 0, 3, 1, 8);
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+	for (l = 0; l < 4; l++) {
+		glGenTextures(1, &viewtex);
+		glTextureView(viewtex, GL_TEXTURE_2D_ARRAY, tex[1], GL_RG16UI,
+			      0, 4, l, 9);
+		glBindTexture(GL_TEXTURE_2D_ARRAY, viewtex);
+
+		/* test min_layers are additive using chained views */
+		glGetTexParameteriv(GL_TEXTURE_2D_ARRAY,
+				    GL_TEXTURE_VIEW_MIN_LAYER, &param);
+
+		if (param != (1 + l)) {
+			glDeleteTextures(1, &viewtex);
+			printf("bad query of view_min_layer expected %u got %u\n",
+			       1+l, param);
+			pass = false;
+			break;
+		}
+		/* test num_layers are correct for chained views */
+		glGetTexParameteriv(GL_TEXTURE_2D_ARRAY,
+				    GL_TEXTURE_VIEW_NUM_LAYERS,	&param);
+		if (param != (8 - l)) {
+			glDeleteTextures(1, &viewtex);
+			printf("bad query of view_num_layers expected %u got %u\n",
+			       8 - l, param);
+			pass = false;
+			break;
+		}
+
+		glDeleteTextures(1, &viewtex);
+	}
+	glDeleteTextures(2, tex);
+
+	return pass;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+	piglit_require_extension("GL_ARB_texture_storage");
+	piglit_require_extension("GL_ARB_texture_view");
+
+	pass = query_levels_test();
+	pass = query_layers_state() && pass;
+	pass = query_default_state() && pass;
+
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}