Add a test that actually draws something with uniform buffer objects
along the lines of what an application might do.
---
tests/all.py | 1 +
.../arb_uniform_buffer_object/CMakeLists.gl.txt | 1 +
tests/spec/arb_uniform_buffer_object/rendering.c | 212 ++++++++++++++++++++
3 files changed, 214 insertions(+)
create mode 100644 tests/spec/arb_uniform_buffer_object/rendering.c
diff --git a/tests/all.py b/tests/all.py
index 59ca861..61c4ae5 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -2945,6 +2945,7 @@
arb_uniform_buffer_object['negative-bindbufferrange-range'] = concurrent_test('a
arb_uniform_buffer_object['negative-getactiveuniformblockiv'] =
concurrent_test('arb_uniform_buffer_object-negative-getactiveuniformblockiv')
arb_uniform_buffer_object['negative-getactiveuniformsiv'] =
concurrent_test('arb_uniform_buffer_object-negative-getactiveuniformsiv')
arb_uniform_buffer_object['referenced-by-shader'] =
concurrent_test('arb_uniform_buffer_object-referenced-by-shader')
+arb_uniform_buffer_object['rendering'] =
concurrent_test('arb_uniform_buffer_object-rendering')
arb_uniform_buffer_object['row-major'] =
concurrent_test('arb_uniform_buffer_object-row-major')
arb_uniform_buffer_object['uniformblockbinding'] =
concurrent_test('arb_uniform_buffer_object-uniformblockbinding')
diff --git a/tests/spec/arb_uniform_buffer_object/CMakeLists.gl.txt
b/tests/spec/arb_uniform_buffer_object/CMakeLists.gl.txt
index 685c415..7d65e2d 100644
--- a/tests/spec/arb_uniform_buffer_object/CMakeLists.gl.txt
+++ b/tests/spec/arb_uniform_buffer_object/CMakeLists.gl.txt
@@ -38,6 +38,7 @@ piglit_add_executable
(arb_uniform_buffer_object-negative-bindbufferrange-range
piglit_add_executable
(arb_uniform_buffer_object-negative-getactiveuniformblockiv
negative-getactiveuniformblockiv.c)
piglit_add_executable (arb_uniform_buffer_object-negative-getactiveuniformsiv
negative-getactiveuniformsiv.c)
piglit_add_executable (arb_uniform_buffer_object-referenced-by-shader
referenced-by-shader.c)
+piglit_add_executable (arb_uniform_buffer_object-rendering rendering.c)
piglit_add_executable (arb_uniform_buffer_object-row-major row-major.c)
piglit_add_executable (arb_uniform_buffer_object-uniformblockbinding
uniformblockbinding.c)
diff --git a/tests/spec/arb_uniform_buffer_object/rendering.c
b/tests/spec/arb_uniform_buffer_object/rendering.c
new file mode 100644
index 0000000..d8b67f4
--- /dev/null
+++ b/tests/spec/arb_uniform_buffer_object/rendering.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2014 VMware, 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.
+ */
+
+/** @file rendering.c
+ *
+ * Test rendering with UBOs. We draw four squares with different positions,
+ * sizes, rotations and colors where those parameters come from UBOs.
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 20;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const char vert_shader_text[] =
+ "#extension GL_ARB_uniform_buffer_object : require\n"
+ "\n"
+ "layout(std140) uniform;\n"
+ "uniform ub_pos_size { vec2 pos; float size; };\n"
+ "uniform ub_color { vec4 color; float color_scale; };\n"
+ "uniform ub_rot {float rotation; };\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " mat2 m;\n"
+ " m[0][0] = m[1][1] = cos(rotation); \n"
+ " m[0][1] = sin(rotation); \n"
+ " m[1][0] = -m[0][1]; \n"
+ " gl_Position.xy = m * gl_Vertex.xy * vec2(size) + pos;\n"
+ " gl_Position.zw = vec2(0, 1);\n"
+ " gl_FrontColor = color * color_scale;\n"
+ "}\n";
+
+static const char frag_shader_text[] =
+ "#extension GL_ARB_uniform_buffer_object : require\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " gl_FragColor = gl_Color;\n"
+ "}\n";
+
+#define NUM_SQUARES 4
+#define NUM_UBOS 3
+
+/* Square positions and sizes */
+static const float pos_size[NUM_SQUARES][3] = {
+ { -0.5, -0.5, 0.1 },
+ { 0.5, -0.5, 0.2 },
+ { -0.5, 0.5, 0.3 },
+ { 0.5, 0.5, 0.4 }
+};
+
+/* Square color and color_scales */
+static const float color[NUM_SQUARES][8] = {
+ { 2.0, 0.0, 0.0, 1.0, 0.50, 0.0, 0.0, 0.0 },
+ { 0.0, 4.0, 0.0, 1.0, 0.25, 0.0, 0.0, 0.0 },
+ { 0.0, 0.0, 5.0, 1.0, 0.20, 0.0, 0.0, 0.0 },
+ { 0.2, 0.2, 0.2, 0.2, 5.00, 0.0, 0.0, 0.0 }
+};
+
+/* Square rotations */
+static const float rotation[NUM_SQUARES] = {
+ 0.0,
+ 0.1,
+ 0.2,
+ 0.3
+};
+
+static GLuint prog;
+static GLuint buffers[NUM_UBOS];
+
+
+static void
+setup_ubos(void)
+{
+ static const char *names[NUM_UBOS] = {
+ "ub_pos_size",
+ "ub_color",
+ "ub_rot"
+ };
+ static GLubyte zeros[1000] = {0};
+ int i;
+
+ glGenBuffers(NUM_UBOS, buffers);
+
+ for (i = 0; i < NUM_UBOS; i++) {
+ GLint index, size;
+
+ /* query UBO index */
+ index = glGetUniformBlockIndex(prog, names[i]);
+
+ /* query UBO size */
+ glGetActiveUniformBlockiv(prog, index,
+ GL_UNIFORM_BLOCK_DATA_SIZE, &size);
+
+ printf("UBO %s: index = %d, size = %d\n",
+ names[i], index, size);
+
+ /* Allocate UBO */
+ /* XXX for some reason, this test doesn't work at all with
+ * nvidia if we pass NULL instead of zeros here. The UBO data
+ * is set/overwritten in the piglit_display() function so this
+ * really shouldn't matter.
+ */
+ glBindBuffer(GL_UNIFORM_BUFFER, buffers[i]);
+ glBufferData(GL_UNIFORM_BUFFER, size, zeros, GL_DYNAMIC_DRAW);
+
+ /* Attach UBO */
+ glBindBufferBase(GL_UNIFORM_BUFFER, i, buffers[i]);
+ glUniformBlockBinding(prog, index, i);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+ }
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_extension("GL_ARB_uniform_buffer_object");
+
+ prog = piglit_build_simple_program(vert_shader_text, frag_shader_text);
+ assert(prog);
+ glUseProgram(prog);
+
+ setup_ubos();
+
+ glClearColor(0.2, 0.2, 0.2, 0.2);
+}
+
+
+static bool
+probe(int x, int y, int color_index)
+{
+ float expected[4];
+
+ /* mul color by color_scale */
+ expected[0] = color[color_index][0] * color[color_index][4];
+ expected[1] = color[color_index][1] * color[color_index][4];
+ expected[2] = color[color_index][2] * color[color_index][4];
+ expected[3] = color[color_index][3] * color[color_index][4];
+
+ return piglit_probe_pixel_rgba(x, y, expected);
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+ int x0 = piglit_width / 4;
+ int x1 = piglit_width * 3 / 4;
+ int y0 = piglit_height / 4;
+ int y1 = piglit_height * 3 / 4;
+ int i;
+
+ glViewport(0, 0, piglit_width, piglit_height);
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ for (i = 0; i < NUM_SQUARES; i++) {
+ /* Load UBO data */
+ glBindBuffer(GL_UNIFORM_BUFFER, buffers[0]);
+ glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(pos_size[0]),
+ pos_size[i]);
+ glBindBuffer(GL_UNIFORM_BUFFER, buffers[1]);
+ glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(color[0]),
+ color[i]);
+ glBindBuffer(GL_UNIFORM_BUFFER, buffers[2]);
+ glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(rotation[0]),
+ &rotation[i]);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ return PIGLIT_FAIL;
+
+ piglit_draw_rect(-1, -1, 2, 2);
+ }
+
+ pass = probe(x0, y0, 0) && pass;
+ pass = probe(x1, y0, 1) && pass;
+ pass = probe(x0, y1, 2) && pass;
+ pass = probe(x1, y1, 3) && pass;
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
