[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
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