[Piglit] [PATCH 1/1] gles2: new test to render triangle and validate via glReadPixels
Tom Gall
tom.gall at linaro.org
Mon Nov 26 12:27:47 PST 2012
new gles2 sanity test which very simply renders a triangle and
validates it was rendered correctly via reading from glReadPixels
and checking the returned buffer for values of alpha, red,
green and blue.
Signed-off-by: Tom Gall <tom.gall at linaro.org>
---
tests/all_es2.tests | 4 +
tests/gles2/CMakeLists.gles2.txt | 3 +
tests/gles2/gles2_simple_triangle.c | 199 +++++++++++++++++++++++++++++++++++
3 files changed, 206 insertions(+)
create mode 100644 tests/gles2/gles2_simple_triangle.c
diff --git a/tests/all_es2.tests b/tests/all_es2.tests
index ac1b636..61a2329 100644
--- a/tests/all_es2.tests
+++ b/tests/all_es2.tests
@@ -21,4 +21,8 @@ oes_compressed_etc1_rgb8_texture = Group()
spec['OES_compressed_ETC1_RGB8_texture'] = oes_compressed_etc1_rgb8_texture
oes_compressed_etc1_rgb8_texture['miptree'] = PlainExecTest(['oes_compressed_etc1_rgb8_texture-miptree', '-auto'])
+gles2_tests = Group()
+spec['gles2_tests'] = gles2_tests
+gles2_tests['gles2_simple_triangle'] = PlainExecTest(['gles2_simple_triangle', '-auto'])
+
profile.tests['spec'] = spec
diff --git a/tests/gles2/CMakeLists.gles2.txt b/tests/gles2/CMakeLists.gles2.txt
index a7807d8..633a2ed 100644
--- a/tests/gles2/CMakeLists.gles2.txt
+++ b/tests/gles2/CMakeLists.gles2.txt
@@ -13,5 +13,8 @@ link_libraries(
piglit_add_executable(gles2_shader_runner
gles2_shader_runner.c
)
+piglit_add_executable(gles2_simple_triangle
+ gles2_simple_triangle.c
+ )
# vim: ft=cmake:
diff --git a/tests/gles2/gles2_simple_triangle.c b/tests/gles2/gles2_simple_triangle.c
new file mode 100644
index 0000000..e295b9c
--- /dev/null
+++ b/tests/gles2/gles2_simple_triangle.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright © 2012 Linaro Inc
+ *
+ * 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.
+ */
+
+/**
+ * A simple triange test for OpenGL ES 2.0.
+ *
+ * \author Tom Gall <tom.gall at linaro.org>
+ */
+
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_es2 = true;
+ config.requires_displayed_window = true;
+
+ config.window_width = 320;
+ config.window_height = 200;
+ config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DEPTH;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+GLuint prog;
+GLuint frag;
+GLuint vert;
+
+char vertex_shader [] = "\
+attribute vec4 vPosition; \
+void main() \
+{ \
+ gl_Position = vPosition; \
+}";
+
+char fragment_shader [] = "\
+precision mediump float; \
+void main() \
+{ \
+ gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); \
+}"; \
+
+enum piglit_result
+validate_results()
+{
+ int i,j, linestart,lineend;
+ GLubyte buffer[200][320][4];
+
+ glReadPixels(0,0,320,200,GL_RGBA, GL_UNSIGNED_BYTE, &buffer);
+
+ /* check that the triangle was rendered correctly */
+ for (i=148;i>49;i--) {
+ linestart=159;
+ lineend=160;
+ for(j=linestart;j<=lineend;j++) {
+ if (buffer[i][j][0]!=0xff && buffer[i][j][1]!=0x00 &&
+ buffer[i][j][2]!=0x00 && buffer[i][j][3]!=0xff)
+ return PIGLIT_FAIL;
+ }
+ linestart--;
+ lineend++;
+ }
+ /* check that the remaining area is black */
+ for(i=0;i<50;i++) {
+ for(j=0;j<320;j++) {
+ if (buffer[i][j][0]!=0x00 && buffer[i][j][1]!=0x00 &&
+ buffer[i][j][2]!=0x00 && buffer[i][j][3]!=0xff)
+ return PIGLIT_FAIL;
+ }
+ }
+ for(i=149;i<200;i++) {
+ for(j=0;j<320;j++) {
+ if (buffer[i][j][0]!=0x00 && buffer[i][j][1]!=0x00 &&
+ buffer[i][j][2]!=0x00 && buffer[i][j][3]!=0xff)
+ return PIGLIT_FAIL;
+ }
+ }
+ lineend=158;
+ for (i=148;i>49;i--) {
+ linestart=0;
+ for(j=linestart;j<=lineend;j++) {
+ if (buffer[i][j][0]!=0x00 && buffer[i][j][1]!=0x00 &&
+ buffer[i][j][2]!=0x00 && buffer[i][j][3]!=0xff)
+ return PIGLIT_FAIL;
+ }
+ lineend--;
+ }
+ linestart=161;
+ for (i=148;i>49;i--) {
+ lineend=320;
+ for(j=linestart;j<lineend;j++) {
+ if (buffer[i][j][0]!=0x00 && buffer[i][j][1]!=0x00 &&
+ buffer[i][j][2]!=0x00 && buffer[i][j][3]!=0xff)
+ return PIGLIT_FAIL;
+ }
+ linestart++;
+ }
+
+ return PIGLIT_PASS;
+}
+
+bool
+check_for_glError(char *message)
+{
+ GLenum err;
+
+ err = glGetError();
+ if (err) {
+ GLchar *info;
+ GLint size;
+
+ printf("%s: 0x%04x\n",message, err);
+
+ glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &size);
+ info = malloc(size);
+
+ glGetProgramInfoLog(prog, size, NULL, info);
+ fprintf(stderr, "Info log: %s\n", info);
+
+ piglit_report_result(PIGLIT_FAIL);
+ return true;
+ }
+ return false;
+}
+
+void
+link_and_use_shaders(void)
+{
+ prog = glCreateProgram();
+
+ vert=piglit_compile_shader_text(GL_VERTEX_SHADER,vertex_shader);
+ frag=piglit_compile_shader_text(GL_FRAGMENT_SHADER,fragment_shader);
+
+ glAttachShader(prog, vert);
+ glAttachShader(prog, frag);
+
+ glLinkProgram(prog);
+ if (!(piglit_link_check_status(prog))) {
+ piglit_report_result(PIGLIT_FAIL);
+ return;
+ }
+
+ glDeleteShader(vert);
+ glDeleteShader(frag);
+
+ glUseProgram(prog);
+ if (check_for_glError("GL error after linking program")) {
+ piglit_report_result(PIGLIT_FAIL);
+ return;
+ }
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ GLfloat vVertices[] = { 0.0f, 0.5f, 0.0f,
+ -0.5f, -0.5f, 0.0f,
+ 0.5f, -0.5f, 0.0f };
+
+ /* Clear the color buffer */
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Load the vertex data */
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, vVertices);
+ glEnableVertexAttribArray(0);
+
+ glDrawArrays(GL_TRIANGLES, 0, 3);
+ piglit_swap_buffers();
+
+ return validate_results();
+}
+
+void
+piglit_init(int argc, char *argv[])
+{
+ link_and_use_shaders();
+}
--
1.7.10.4
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