arb_es2_compatibility: New test for glGetShaderPrecisionFormat

2 files changed, 128 insertions, 0 deletions

diff --git a/tests/spec/arb_es2_compatibility/CMakeLists.txt b/tests/spec/arb_es2_compatibility/CMakeLists.txt
index 420faa2c2..e319a63fc 100644
--- a/tests/spec/arb_es2_compatibility/CMakeLists.txt
+++ b/tests/spec/arb_es2_compatibility/CMakeLists.txt
@@ -26,3 +26,4 @@ add_executable (arb_es2_compatibility-drawbuffers arb_es2_compatibility-drawbuff
 add_executable (arb_es2_compatibility-maxvectors arb_es2_compatibility-maxvectors.c)
 add_executable (arb_es2_compatibility-releaseshadercompiler arb_es2_compatibility-releaseshadercompiler.c)
 add_executable (arb_es2_compatibility-shadercompiler arb_es2_compatibility-shadercompiler.c)
+add_executable (arb_es2_compatibility-getshaderprecisionformat arb_es2_compatibility-getshaderprecisionformat.c)
diff --git a/tests/spec/arb_es2_compatibility/arb_es2_compatibility-getshaderprecisionformat.c b/tests/spec/arb_es2_compatibility/arb_es2_compatibility-getshaderprecisionformat.c
new file mode 100644
index 000000000..547102cb0
--- /dev/null
+++ b/tests/spec/arb_es2_compatibility/arb_es2_compatibility-getshaderprecisionformat.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright © 2010 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.
+ */
+
+/**
+ * \file arb_es2_compatibility-getshaderprecisionformat.c
+ * Validate data returned by glGetShaderPrecisionFormat
+ *
+ * Tests all of the shader targets and all of the precision modes.
+ *
+ * \warning
+ * This test will need to be modified for OpenGL ES 2.0.  The mode
+ * \c GL_HIGH_FLOAT is only available with \c GL_FRAGMENT_SHADER
+ * if \c GL_OES_fragment_precision_high is supported.
+ */
+
+#include "piglit-util.h"
+
+int piglit_width = 10, piglit_height = 10;
+int piglit_window_mode = GLUT_RGB;
+
+enum piglit_result
+piglit_display(void)
+{
+	return PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLboolean pass = GL_TRUE;
+	GLint status;
+	unsigned i;
+	unsigned j;
+	static const GLenum shaderTypes[] = {
+		GL_VERTEX_SHADER,
+		GL_FRAGMENT_SHADER
+	};
+	static const struct {
+		GLenum type;
+		GLint range[2];
+		GLint precision;
+	} precision[] = {
+		{ GL_LOW_FLOAT,    {  1,  1 },  8 },
+		{ GL_MEDIUM_FLOAT, { 14, 14 }, 10 },
+		{ GL_HIGH_FLOAT,   { 62, 62 }, 16 },
+		{ GL_LOW_INT,      {  8,  8 },  0 },
+		{ GL_MEDIUM_INT,   { 10, 10 },  0 },
+		{ GL_HIGH_INT,     { 16, 16 },  0 }
+	};
+
+	if (!GLEW_VERSION_2_0) {
+		printf("Requires OpenGL 2.0\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	if (!GLEW_ARB_ES2_compatibility) {
+		printf("Requires ARB_ES2_compatibility\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	for (i = 0; i < ARRAY_SIZE(shaderTypes); i++) {
+		for (j = 0; j < ARRAY_SIZE(precision); j++) {
+			GLint r[2];
+			GLint p;
+
+			r[0] = 0;
+			r[1] = 0;
+			p = 0;
+
+			glGetShaderPrecisionFormat(GL_VERTEX_SHADER,
+						   precision[j].type,
+						   r, & p);
+			status = glGetError();
+			if (status != GL_NO_ERROR) {
+				printf("glGetShaderPrecisionFormat(0x%04x, "
+				       "0x%04x) "
+				       "got GL error of 0x%04x\n",
+				       shaderTypes[i],
+				       precision[j].type,
+				       status);
+				pass = GL_FALSE;
+			}
+
+			if (r[0] < precision[j].range[0]
+			    || r[1] < precision[j].range[1]
+			    || p < precision[j].precision) {
+				printf("glGetShaderPrecisionFormat(0x%04x, "
+				       "0x%04x) "
+				       "returned invalid values:\n"
+				       "    range = { %d, %d }\n"
+				       "    precision = %d\n"
+				       "expected at least:\n"
+				       "    range = { %d, %d }\n"
+				       "    precision = %d\n",
+				       shaderTypes[i],
+				       precision[j].type,
+				       r[0], r[1],
+				       p,
+				       precision[j].range[0],
+				       precision[j].range[1],
+				       precision[j].precision);
+				pass = GL_FALSE;
+			}
+		}
+	}
+	piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}