[Piglit] [PATCH] Add test case for glClearBuffer in mixed format color buffers
Anuj Phogat
anuj.phogat at gmail.com
Mon Dec 19 14:08:35 PST 2011
Test creates single FBO with multiple format color attachments and
clears the buffers using glClearBuffer functions
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
includes changes due to change in prototype of probe_rect_color(). This
function is a part of separate patch currently under review.
tests/all.tests | 1 +
tests/spec/gl-3.0/api/CMakeLists.gl.txt | 1 +
tests/spec/gl-3.0/api/clearbuffer-mixed-format.c | 256 ++++++++++++++++++++++
3 files changed, 258 insertions(+), 0 deletions(-)
create mode 100644 tests/spec/gl-3.0/api/clearbuffer-mixed-format.c
diff --git a/tests/all.tests b/tests/all.tests
index b713de0..11e3be1 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -808,6 +808,7 @@ add_concurrent_test(gl30, 'clearbuffer-depth')
add_concurrent_test(gl30, 'clearbuffer-depth-stencil')
add_concurrent_test(gl30, 'clearbuffer-invalid-drawbuffer')
add_concurrent_test(gl30, 'clearbuffer-invalid-buffer')
+add_concurrent_test(gl30, 'clearbuffer-mixed-format')
add_concurrent_test(gl30, 'clearbuffer-stencil')
add_concurrent_test(gl30, 'getfragdatalocation')
gl30['minmax'] = concurrent_test('gl-3.0-minmax')
diff --git a/tests/spec/gl-3.0/api/CMakeLists.gl.txt b/tests/spec/gl-3.0/api/CMakeLists.gl.txt
index 466ffeb..57879ff 100644
--- a/tests/spec/gl-3.0/api/CMakeLists.gl.txt
+++ b/tests/spec/gl-3.0/api/CMakeLists.gl.txt
@@ -17,6 +17,7 @@ add_executable (clearbuffer-depth clearbuffer-common.c clearbuffer-depth.c)
add_executable (clearbuffer-depth-stencil clearbuffer-common.c clearbuffer-depth-stencil.c)
add_executable (clearbuffer-invalid-drawbuffer clearbuffer-invalid-drawbuffer.c)
add_executable (clearbuffer-invalid-buffer clearbuffer-invalid-buffer.c)
+add_executable (clearbuffer-mixed-format clearbuffer-common.c clearbuffer-mixed-format.c)
add_executable (clearbuffer-stencil clearbuffer-common.c clearbuffer-stencil.c)
add_executable (getfragdatalocation getfragdatalocation.c)
diff --git a/tests/spec/gl-3.0/api/clearbuffer-mixed-format.c b/tests/spec/gl-3.0/api/clearbuffer-mixed-format.c
new file mode 100644
index 0000000..83cae93
--- /dev/null
+++ b/tests/spec/gl-3.0/api/clearbuffer-mixed-format.c
@@ -0,0 +1,256 @@
+/* Copyright © 2011 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 clearbuffer-mixed-format.c
+ * Verify clearing mixed format color buffers with glClearBuffer functions
+ *
+ * This test works by generating several mixed format color render buffer
+ * objects and attempting to clear those buffers by calling glClearBufferfv,
+ * glClearBufferiv or glClearBufferuiv
+ * Verify:
+ * - glClearBufferfv should clear the float color buffer to a desired
+ * float value
+ *
+ * - glClearBufferuiv should clear the unsigned int color buffer to a
+ * desired unsigned integer value
+ *
+ * - glClearBufferiv should clear the integer color buffer to a desired
+ * integer value
+ *
+ * - No error should be generated for using glClearBufferuiv or
+ * glClearBufferiv on a float colors buffer or using glClearBufferfv
+ * on a integer color buffers
+ *
+ * \author Anuj Phogat
+ */
+
+#include "piglit-util.h"
+#include "clearbuffer-common.h"
+
+#define COUNT ARRAY_SIZE(test_vectors)
+
+ static const float fcolor[4][4] = {
+ { 0.5, 0.3, 0.7, 0.0 },
+ { 0.8, 0.0, 0.2, 1.0 },
+ { 1.2, -2.9, 0.2, 5.8 },
+ { 0.5, 2.5, -5.2, 1.0 } };
+
+ static const unsigned int uicolor[3][4] = {
+ { 10, 90, 100, 150 },
+ { 100, 190, 200, 15 },
+ { 15, 25, 20, 15 } };
+
+ static const int icolor[3][4] = {
+ { -10, -90, 100, 15 },
+ { 100, 190, 200, -15 },
+ { -50, -50, -50, 50 } };
+
+ static const struct {
+ GLenum rb_format;
+ GLenum type;
+ const GLvoid *clear_color;
+ } test_vectors[] = {
+ /* GL_RGBA8, GL_RGBA16 clamps the color vaues to [0, 1] */
+ { GL_RGBA8, GL_FLOAT, (const GLvoid *)fcolor[0] },
+ { GL_RGBA16, GL_FLOAT, (const GLvoid *)fcolor[1] },
+
+ /* GL_RGBA16F, GL_RGBA32F doesn't clamp color values to [0, 1] */
+ { GL_RGBA16F, GL_FLOAT, (const GLvoid *)fcolor[2] },
+ { GL_RGBA32F, GL_FLOAT, (const GLvoid *)fcolor[3] },
+
+ /* Integer formats */
+ { GL_RGBA8UI, GL_UNSIGNED_INT, (const GLvoid *)uicolor[0] },
+ { GL_RGBA32UI, GL_UNSIGNED_INT, (const GLvoid *)uicolor[2] },
+
+ { GL_RGBA16I, GL_INT, (const GLvoid *)icolor[1] },
+ { GL_RGBA32I, GL_INT, (const GLvoid *)icolor[2] },
+ };
+
+
+GLuint
+generate_fbo(void)
+{
+ GLuint fb;
+ GLuint rb[COUNT];
+ GLuint i;
+ GLenum status;
+
+ /* Generate a frame buffer object */
+ glGenFramebuffers(1, &fb);
+ glBindFramebuffer(GL_FRAMEBUFFER, fb);
+ /* Generate renderbuffers */
+ glGenRenderbuffers(COUNT, rb);
+
+ for(i = 0; i < COUNT; i++) {
+ glBindRenderbuffer(GL_RENDERBUFFER, rb[i]);
+ /* Buffer storage is allocated based on render buffer format */
+ glRenderbufferStorage(GL_RENDERBUFFER,
+ test_vectors[i].rb_format,
+ piglit_width,
+ piglit_height);
+ /* Attach the render buffer to a color attachment */
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0 + i,
+ GL_RENDERBUFFER,
+ rb[i]);
+
+ piglit_check_gl_error(GL_NO_ERROR, PIGLIT_FAIL);
+ }
+
+ status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ fprintf(stderr,
+ "Framebuffer with color"
+ "attachment was not complete: 0x%04x\n",
+ status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ if (status == GL_FRAMEBUFFER_UNSUPPORTED) {
+ glDeleteRenderbuffers(COUNT, rb);
+ glDeleteFramebuffers(1, &fb);
+ return 0;
+ }
+ /* All the color render buffers are cleared to default RGBA
+ * (0, 0, 0, 0) color
+ */
+ for (i = 0; i < COUNT; i++) {
+ glDrawBuffer(GL_COLOR_ATTACHMENT0 + i);
+ glClear(GL_COLOR_BUFFER_BIT);
+ }
+ piglit_check_gl_error(GL_NO_ERROR, PIGLIT_FAIL);
+ return fb;
+}
+
+void piglit_init(int argc, char **argv)
+{
+ GLint err;
+ GLuint fb;
+ bool pass = true;
+ int i, j;
+
+ piglit_require_gl_version(30);
+ fb = generate_fbo();
+ if (fb == 0) {
+ if (!piglit_automatic) {
+ printf("Skipping framebuffer with color"
+ " attachments\n");
+ }
+ }
+ if (!piglit_automatic)
+ printf("Created framebuffer with a color"
+ " attachments\n");
+
+ for (i = 0; i < COUNT; i++) {
+
+ /* Set the draw buffer and read buffer */
+ glDrawBuffer(GL_COLOR_ATTACHMENT0 + i);
+ glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
+
+ /* Clear the color buffer to a unique color */
+ switch (test_vectors[i].type) {
+
+ /* Float buffer types */
+ case GL_FLOAT:
+ glClearBufferfv(GL_COLOR,
+ i,
+ (GLfloat *)test_vectors[i].clear_color);
+ break;
+
+ /* Signed/unsigned integer buffer types */
+ case GL_INT:
+ glClearBufferiv(GL_COLOR,
+ i,
+ (GLint *)test_vectors[i].clear_color);
+ break;
+
+ case GL_UNSIGNED_INT:
+ glClearBufferuiv(GL_COLOR,
+ i,
+ (GLuint *)test_vectors[i].clear_color);
+
+ break;
+ }
+ /* Test the pixel values of color buffer against
+ * expected color values
+ */
+ pass = pass &&
+ probe_rect_color(0,
+ 0,
+ piglit_width,
+ piglit_height,
+ test_vectors[i].type,
+ test_vectors[i].clear_color);
+
+ /* Verify that glClearBuffer[uif]v functions only modify the
+ * color data of current draw buffer. Other color buffers stay
+ * uneffected
+ */
+ for (j = 0; j < i; j++)
+ {
+ /* Set the read buffer */
+ glReadBuffer(GL_COLOR_ATTACHMENT0 + j);
+ /* Test the pixel values of color buffer against
+ * expected color values
+ */
+ pass = pass &&
+ probe_rect_color(0,
+ 0,
+ piglit_width,
+ piglit_height,
+ test_vectors[j].type,
+ test_vectors[j].clear_color);
+ }
+ }
+
+ /* No GL error should be generated for clearing integer buffers using
+ * glClearBufferfv or clearing float buffers with glClearBufferiv/
+ * glClearBufferuiv. But the result of ClearBuffer is undefined.
+ * Reference: OpenGL 3.0 specification section 4.2.3 "Clearing the
+ * Buffers"
+ */
+ for (i = 0; i < COUNT; i++) {
+ glDrawBuffer(GL_COLOR_ATTACHMENT0 + i);
+
+ glClearBufferuiv(GL_COLOR,
+ i,
+ uicolor[0]);
+ glClearBufferiv(GL_COLOR,
+ i,
+ icolor[0]);
+ glClearBufferfv(GL_COLOR,
+ i,
+ fcolor[0]);
+
+ err = glGetError();
+ if (err != GL_NO_ERROR) {
+ piglit_get_gl_error_name(err);
+ pass = false;
+ }
+ }
+ /* Delete framebuffer object */
+ glDeleteFramebuffers(1, &fb);
+ piglit_check_gl_error(GL_NO_ERROR, PIGLIT_FAIL);
+ piglit_present_results();
+ piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
--
1.7.7.4
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