Port texture unit test from Glean to Piglit

Reviewed-by: Brian Paul <brianp@vmware.com>

3 files changed, 262 insertions, 0 deletions

diff --git a/tests/all.py b/tests/all.py
index 5c5e5ab1a..ace4ac04f 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1217,6 +1217,7 @@ with profile.test_list.group_manager(
     g(['gl-2.0-active-sampler-conflict'])
     g(['incomplete-cubemap', 'size'], 'incomplete-cubemap-size')
     g(['incomplete-cubemap', 'format'], 'incomplete-cubemap-format')
+    g(['gl-2.0-texture-units'])
 
 with profile.test_list.group_manager(
         PiglitGLTest,
diff --git a/tests/spec/gl-2.0/api/CMakeLists.gl.txt b/tests/spec/gl-2.0/api/CMakeLists.gl.txt
index fe59747b9..b4481d9b5 100644
--- a/tests/spec/gl-2.0/api/CMakeLists.gl.txt
+++ b/tests/spec/gl-2.0/api/CMakeLists.gl.txt
@@ -12,5 +12,6 @@ piglit_add_executable (gl-2.0-active-sampler-conflict active-sampler-conflict.c)
 piglit_add_executable (attrib-assignments attrib-assignments.c)
 piglit_add_executable (getattriblocation-conventional getattriblocation-conventional.c)
 piglit_add_executable (clip-flag-behavior clip-flag-behavior.c)
+piglit_add_executable (gl-2.0-texture-units texture-units.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/gl-2.0/api/texture-units.c b/tests/spec/gl-2.0/api/texture-units.c
new file mode 100644
index 000000000..2deb0567e
--- /dev/null
+++ b/tests/spec/gl-2.0/api/texture-units.c
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2008  VMware, Inc.  All Rights Reserved.
+ *
+ * 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 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 ALLEN AKIN 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 texture-unit.c:  Test texture unit things
+ * Author: Brian Paul  31 Dec 2008
+ *
+ * We're generally just testing API-related things, not rendering.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 20;
+	config.window_visual = PIGLIT_GL_VISUAL_RGB;
+	config.khr_no_error_support = PIGLIT_HAS_ERRORS;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static int max_combined_units;
+static int max_image_units;
+static int max_coord_units;
+static int max_units;
+
+static void
+setup(void)
+{
+	glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
+		      &max_combined_units);
+	glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_image_units);
+	glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_coord_units);
+	glGetIntegerv(GL_MAX_TEXTURE_UNITS, &max_units);
+}
+
+static bool
+test_limits(void)
+{
+	if (max_image_units < max_units) {
+		printf("GL_MAX_TEXTURE_IMAGE_UNITS < GL_MAX_TEXTURE_UNITS");
+		return false;
+	}
+	if (max_coord_units < max_units) {
+		printf("GL_MAX_TEXTURE_COORD_UNITS < GL_MAX_TEXTURE_UNITS");
+		return false;
+	}
+	return true;
+}
+
+static bool
+test_active_texture(void)
+{
+	/* test glActiveTexture() */
+	for (int i = 0; i < max_combined_units; i++) {
+		glActiveTexture(GL_TEXTURE0 + i);
+		if (!piglit_check_gl_error(GL_NO_ERROR)) {
+			printf("glActiveTexture(GL_TEXTURE%d) failed", i);
+			return false;
+		}
+
+		int unit;
+		glGetIntegerv(GL_ACTIVE_TEXTURE, &unit);
+		if (!piglit_check_gl_error(GL_NO_ERROR) ||
+		    unit != GL_TEXTURE0 + i) {
+			printf("glGetIntegerv(GL_ACTIVE_TEXTURE) failed");
+			return false;
+		}
+	}
+
+	/* this should fail: */
+	glActiveTexture(GL_TEXTURE0 + max_combined_units);
+	if (!piglit_check_gl_error(GL_INVALID_ENUM)) {
+		printf("glActiveTexture(GL_TEXTURE%d) failed to generate an "
+		       "error", max_combined_units);
+		return false;
+	}
+
+
+	/* test glClientActiveTexture() */
+	for (int i = 0; i < max_coord_units; i++) {
+		glClientActiveTexture(GL_TEXTURE0 + i);
+		if (!piglit_check_gl_error(GL_NO_ERROR)) {
+			printf("glClientActiveTexture(GL_TEXTURE%d) failed",
+			       i);
+			return false;
+		}
+
+		int unit;
+		glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE, &unit);
+		if (!piglit_check_gl_error(GL_NO_ERROR) ||
+		    unit != GL_TEXTURE0 + i) {
+			printf("glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE) "
+			       "failed");
+			return false;
+		}
+	}
+
+	/* this should fail: */
+	glClientActiveTexture(GL_TEXTURE0 + max_coord_units);
+	if (!piglit_check_gl_error(GL_INVALID_ENUM)) {
+		printf("glClientActiveTexture(GL_TEXTURE%d) failed to "
+		       "generate an error", max_coord_units);
+		return false;
+	}
+
+	return true;
+}
+
+static bool
+test_texture_matrices(void)
+{
+	glActiveTexture(GL_TEXTURE0);
+	glMatrixMode(GL_TEXTURE);
+
+	/* set texture matrices */
+	for (int i = 0; i < max_coord_units; i++) {
+		glActiveTexture(GL_TEXTURE0 + i);
+
+		/* generate matrix */
+		float m[16];
+		for (int j = 0; j < 16; j++) {
+			m[j] = (float)(i * 100 + j);
+		}
+
+		glLoadMatrixf(m);
+	}
+
+	/* query texture matrices */
+	for (int i = 0; i < max_coord_units; i++) {
+		glActiveTexture(GL_TEXTURE0 + i);
+
+		/* get matrix and check it */
+		float m[16] = {0};
+		glGetFloatv(GL_TEXTURE_MATRIX, m);
+
+		if (!piglit_check_gl_error(GL_NO_ERROR)) {
+			printf("Query of texture matrix %d raised an error",
+			       i);
+			return false;
+		}
+
+		for (int j = 0; j < 16; j++) {
+			if (m[j] != (float)(i * 100 + j)) {
+				printf("Query of texture matrix %d failed",
+				       i);
+				return false;
+			}
+		}
+	}
+
+	return true;
+}
+
+static bool
+test_texture_coord_gen(void)
+{
+	glActiveTexture(GL_TEXTURE0);
+	glMatrixMode(GL_TEXTURE);
+
+	/* test texgen enable/disable */
+	for (int i = 0; i < max_combined_units; i++) {
+		glActiveTexture(GL_TEXTURE0 + i);
+
+		glEnable(GL_TEXTURE_GEN_S);
+		glEnable(GL_TEXTURE_GEN_T);
+		glEnable(GL_TEXTURE_GEN_R);
+		glEnable(GL_TEXTURE_GEN_Q);
+		if (i < max_coord_units) {
+			/* should be no error */
+			if (!piglit_check_gl_error(GL_NO_ERROR)) {
+				printf("GL error was generated by enabling "
+				       "GL_TEXTURE_GEN_x, unit %d", i);
+				return false;
+			}
+			glDisable(GL_TEXTURE_GEN_S);
+			glDisable(GL_TEXTURE_GEN_T);
+			glDisable(GL_TEXTURE_GEN_R);
+			glDisable(GL_TEXTURE_GEN_Q);
+		} else {
+			/* should be an error */
+			if (!piglit_check_gl_error(GL_INVALID_OPERATION)) {
+				printf("GL error not generated by invalid "
+				       "enable of GL_TEXTURE_GEN_x, unit %d",
+				       i);
+				return false;
+			}
+		}
+	}
+
+	return true;
+}
+
+static bool
+test_texcoord_arrays(void)
+{
+	for (int i = 0; i < max_coord_units; i++) {
+		glClientActiveTexture(GL_TEXTURE0 + i);
+
+		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+		if (!piglit_check_gl_error(GL_NO_ERROR)) {
+			printf("GL error was generated by glEnableClientState"
+			       " for unit %d", i);
+			return false;
+		}
+		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	}
+
+	return true;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	bool pass = true;
+
+	setup();
+
+	pass = pass && test_limits();
+
+	pass = pass && test_active_texture();
+
+	pass = pass && test_texture_matrices();
+
+	pass = pass && test_texture_coord_gen();
+
+	pass = pass && test_texcoord_arrays();
+
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	/* UNREACHED */
+	return PIGLIT_FAIL;
+}