[Piglit] [PATCH] GL: Verify that when GL_COORD_REPLACE is set, fragment shader texture coordinates do not get eliminated.

Nicholas Mack nichmack at gmail.com
Mon Nov 11 11:44:10 PST 2013


---
 tests/all.tests                                    |   2 +-
 tests/spec/gl-3.2/CMakeLists.gl.txt                |   3 +-
 ...oord-replace-doesnt-eliminate-frag-tex-coords.c | 135 +++++++++++++++++++++
 3 files changed, 138 insertions(+), 2 deletions(-)
 create mode 100644 tests/spec/gl-3.2/gl-coord-replace-doesnt-eliminate-frag-tex-coords.c

diff --git a/tests/all.tests b/tests/all.tests
index af5dcf3..d34773b 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -765,7 +765,7 @@ spec['!OpenGL 3.2/layered-rendering/gl-layer'] = concurrent_test('gl-3.2-layered
 spec['!OpenGL 3.2/layered-rendering/gl-layer-cube-map'] = concurrent_test('gl-3.2-layered-rendering-gl-layer-cube-map')
 spec['!OpenGL 3.2/layered-rendering/gl-layer-not-layered'] = concurrent_test('gl-3.2-layered-rendering-gl-layer-not-layered')
 spec['!OpenGL 3.2/layered-rendering/gl-layer-render'] = concurrent_test('gl-3.2-layered-rendering-gl-layer-render')
-
+spec['!OpenGL/coord-replace-doesnt-eliminate-frag-tex-coords'] = concurrent_test('gl-coord-replace-doesnt-eliminate-frag-tex-coords')
 spec['!OpenGL/get-active-attrib-returns-all-inputs'] = concurrent_test('gl-get-active-attrib-returns-all-inputs')
 spec['!OpenGL 3.2/texture-border-deprecated'] = concurrent_test('gl-3.2-texture-border-deprecated')
 
diff --git a/tests/spec/gl-3.2/CMakeLists.gl.txt b/tests/spec/gl-3.2/CMakeLists.gl.txt
index 1457681..c8725be 100644
--- a/tests/spec/gl-3.2/CMakeLists.gl.txt
+++ b/tests/spec/gl-3.2/CMakeLists.gl.txt
@@ -9,11 +9,12 @@ link_libraries (
 	${OPENGL_glu_LIBRARY}
 )
 
-piglit_add_executable (gl-get-active-attrib-returns-all-inputs get-active-attrib-returns-all-inputs.c)
 piglit_add_executable (gl-3.2-minmax minmax.c)
 piglit_add_executable (gl-3.2-clear-no-buffers clear-no-buffers.c)
 piglit_add_executable (gl-3.2-get-buffer-parameter-i64v get-buffer-parameter-i64v.c)
 piglit_add_executable (gl-3.2-get-integer-64iv get-integer-64iv.c)
 piglit_add_executable (gl-3.2-get-integer-64v get-integer-64v.c)
 piglit_add_executable (gl-3.2-texture-border-deprecated texture-border-deprecated.c)
+piglit_add_executable (gl-coord-replace-doesnt-eliminate-frag-tex-coords gl-coord-replace-doesnt-eliminate-frag-tex-coords)
+piglit_add_executable (gl-get-active-attrib-returns-all-inputs get-active-attrib-returns-all-inputs.c)
 # vim: ft=cmake:
diff --git a/tests/spec/gl-3.2/gl-coord-replace-doesnt-eliminate-frag-tex-coords.c b/tests/spec/gl-3.2/gl-coord-replace-doesnt-eliminate-frag-tex-coords.c
new file mode 100644
index 0000000..b07327c
--- /dev/null
+++ b/tests/spec/gl-3.2/gl-coord-replace-doesnt-eliminate-frag-tex-coords.c
@@ -0,0 +1,135 @@
+/**
+ * Copyright © 2013 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.
+ */
+
+/**
+ * Verify that when GL_COORD_REPLACE is set, fragment shader texture
+ * coordinates (via the gl_TexCoord built-ins) don't get eliminated.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 21;
+
+	config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const char *vstext =
+	"#version 130\n"
+	"in vec3 vertex;\n"
+	"void main() {\n"
+	"	gl_Position = vec4(vertex, 1.);\n"
+	"	gl_PointSize = 16;\n"
+	"}\n";
+
+static const char *fstext =
+	"#version 130\n"
+	"void main() {\n"
+	"	gl_FragColor = gl_TexCoord[0];\n"
+	"}\n";
+
+static GLuint vao;
+static GLuint vertBuff;
+static GLuint indexBuf;
+
+static GLfloat vertices[] = {
+	0.0, 0.0, 0.0
+};
+static GLsizei vertSize = sizeof(vertices);
+
+static GLuint indices[] = {
+	0
+};
+static GLsizei indSize = sizeof(indices);
+
+static GLuint prog;
+
+void
+piglit_init(int argc, char **argv)
+{
+	GLuint vertIndex;
+
+	prog = piglit_build_simple_program(vstext, fstext);
+
+	glUseProgram(prog);
+
+	glGenBuffers(1, &vertBuff);
+	glBindBuffer(GL_ARRAY_BUFFER, vertBuff);
+	glBufferData(GL_ARRAY_BUFFER, vertSize, vertices, GL_STATIC_DRAW);
+
+	glGenBuffers(1, &indexBuf);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuf);
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, indSize,
+			indices, GL_STATIC_DRAW);
+
+	glGenVertexArrays(1, &vao);
+	glBindVertexArray(vao);
+
+	vertIndex = glGetAttribLocation(prog, "vertex");
+
+	glBindBuffer(GL_ARRAY_BUFFER, vertBuff);
+	glEnableVertexAttribArray(vertIndex);
+	glVertexAttribPointer(vertIndex, 3, GL_FLOAT, GL_FALSE, 0, 0);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+	bool pass = true;
+	int x, y;
+	int ptSize = 16;
+
+	glClearColor(.4, .4, .4, 1.);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glBindVertexArray(vao);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuf);
+
+	glEnable(GL_PROGRAM_POINT_SIZE);
+	glEnable(GL_POINT_SPRITE);
+	glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);
+
+	glDrawElements(GL_POINTS, ARRAY_SIZE(indices),
+			GL_UNSIGNED_INT, NULL);
+
+	for (y = 0; y < ptSize; y++) {
+		for (x = 0; x < ptSize; x++) {
+			float test[] = {(2 * x + 1) / (float)(ptSize * 2),
+					1 - ((2 * y + 1) / (float)(ptSize * 2)),
+					0};
+			pass = piglit_probe_pixel_rgb(
+					piglit_width/2 - ptSize/2 + x,
+					piglit_height/2 - ptSize/2 + y,
+					test)
+				&& pass;
+		}
+	}
+
+	pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
-- 
1.8.3.1



More information about the Piglit mailing list