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/*
* Copyright © 2016 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 layout-std140-fp64-shader.c
*
* Tests that shader storage block reads/writes in GLSL works correctly (offsets
* and values) when interface packing qualifier is std140 and row_major, using
* doubles.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.window_width = 100;
config.window_height = 100;
config.supports_gl_compat_version = 32;
config.supports_gl_core_version = 32;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
#define SSBO_SIZE 44
#define TOLERANCE 1e-5
#define DIFFER(a,b) ((a > b ? a - b : b - a) > TOLERANCE)
static const char vs_code[] =
"#version 150\n"
"#extension GL_ARB_shader_storage_buffer_object : require\n"
"#extension GL_ARB_gpu_shader_fp64 : require\n"
"\n"
"struct A {\n"
" double a1;\n"
" dvec2 a2[2];\n"
" dmat2 a4;\n"
" double a5;\n"
"};\n"
"\n"
"layout(std140, row_major, binding=2) buffer ssbo {\n"
" dvec4 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" double unsized_array[];\n"
"};\n"
"\n"
"in vec4 piglit_vertex;\n"
"out vec4 vertex_to_gs;\n"
"\n"
"void main() {\n"
" vertex_to_gs = piglit_vertex;\n"
" d = 4.333333333333333259lf;\n"
" s.a2[0] = dvec2(6.0, 7.0) * s.a5;\n"
" int index = int(v.x); // index should be zero\n"
" unsized_array[index + gl_VertexID] = unsized_array.length();\n"
"}\n";
static const char gs_source[] =
"#version 150\n"
"#extension GL_ARB_shader_storage_buffer_object : require\n"
"#extension GL_ARB_gpu_shader_fp64 : require\n"
"\n"
"struct A {\n"
" double a1;\n"
" dvec2 a2[2];\n"
" dmat2 a4;\n"
" double a5;\n"
"};\n"
"\n"
"layout(std140, row_major, binding=2) buffer ssbo {\n"
" dvec4 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" double unsized_array[];\n"
"};\n"
"layout(triangles) in;\n"
"layout(triangle_strip, max_vertices = 3) out;\n"
"\n"
"in vec4 vertex_to_gs[3];\n"
"\n"
"void main() {\n"
" for (int i = 0; i < 3; i++) {\n"
" gl_Position = vertex_to_gs[i] + vec4(s.a1);\n"
" EmitVertex();\n"
" }\n"
" s.a4 = dmat2(-1.333333333333333259lf, 11.0, 12.0, 13.0);\n"
"}\n";
static const char fs_source[] =
"#version 150\n"
"#extension GL_ARB_shader_storage_buffer_object : require\n"
"#extension GL_ARB_gpu_shader_fp64 : require\n"
"\n"
"struct A {\n"
" double a1;\n"
" dvec2 a2[2];\n"
" dmat2 a4;\n"
" double a5;\n"
"};\n"
"\n"
"layout(std140, row_major, binding=2) buffer ssbo {\n"
" dvec4 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" double unsized_array[];\n"
"};\n"
"\n"
"out vec4 color;\n"
"\n"
"void main() {\n"
" color = vec4(0,1,0,1);\n"
" v = u + dvec4(0.333333333333333259lf, 1.0, 2.0, 3.0);\n"
" s.a2[1] = dvec2(8.0, 9.0);\n"
" int index = int(v.z + gl_FragCoord.x);\n"
" unsized_array[index] = unsized_array.length() * 2.0;\n"
"}\n";
GLuint prog;
double ssbo_values[SSBO_SIZE] = { 6.0, 7.0, 8.0, 0.0, // dvec4 u
0.0, 0.0, 0.0, 0.0, // dvec4 v
0.0, 0.0, // double d
1.0, 0.0, // double s.a1
0.0, 0.0, // dvec2 s.a2[0]
0.0, 0.0, // dvec2 s.a2[1]
0.0, 0.0, // dmat2 s.a4
0.0, 0.0, // dmat2 s.a4
2.0, 0.0, // double s.a5
0.0, 0.0, // double unsized_array[0]
0.0, 0.0, // double unsized_array[1]
0.0, 0.0, // double unsized_array[2]
0.0, 0.0, // double unsized_array[3]
0.0, 0.0, // double unsized_array[4]
0.0, 0.0, // double unsized_array[5]
0.0, 0.0, // double unsized_array[6]
0.0, 0.0, // double unsized_array[7]
0.0, 0.0, // double unsized_array[8]
0.0, 0.0, // double unsized_array[9]
0.0, 0.0, // double unsized_array[10]
};
double expected[SSBO_SIZE] = { 6.0, 7.0, 8.0, 0.0, // dvec4 u expected[0]
6.333333333333333259, 8.0, 10.0, 3.0, // dvec4 v expected[4]
4.333333333333333259, 0.0, // double d expected[8]
1.0, 0.0, // double s.a1 expected[10]
12.0, 14.0, // dvec2 s.a2[0] expected[12]
8.0, 9.0, // dvec2 s.a2[1] expected[14]
-1.333333333333333259, 12.0, // dmat2 s.a4 expected[16]
11.0, 13.0, // dmat2 s.a4 expected[18]
2.0, 0.0, // double s.a5 expected[20]
11.0, 0.0, // double unsized_array[0] expected[22]
11.0, 0.0, // double unsized_array[1] expected[24]
11.0, 0.0, // double unsized_array[2] expected[26]
11.0, 0.0, // double unsized_array[3] expected[28]
0.0, 0.0, // double unsized_array[4] expected[30]
0.0, 0.0, // double unsized_array[5] expected[32]
0.0, 0.0, // double unsized_array[6] expected[34]
0.0, 0.0, // double unsized_array[7] expected[36]
0.0, 0.0, // double unsized_array[8] expected[38]
0.0, 0.0, // double unsized_array[9] expected[40]
0.0, 0.0, // double unsized_array[10] expected[42]
};
void
piglit_init(int argc, char **argv)
{
bool pass = true;
GLuint buffer;
unsigned int i;
double *map;
GLint num_vertex_ssbo;
piglit_require_extension("GL_ARB_shader_storage_buffer_object");
piglit_require_extension("GL_ARB_gpu_shader_fp64");
piglit_require_GLSL_version(150);
glGetIntegerv(GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, &num_vertex_ssbo);
if (num_vertex_ssbo < 1)
piglit_report_result(PIGLIT_SKIP);
prog = piglit_build_simple_program_multiple_shaders(
GL_VERTEX_SHADER, vs_code,
GL_GEOMETRY_SHADER, gs_source,
GL_FRAGMENT_SHADER, fs_source,
NULL);
glUseProgram(prog);
glClearColor(0, 0, 0, 0);
glGenBuffers(1, &buffer);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, buffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, SSBO_SIZE*sizeof(GLdouble),
&ssbo_values[0], GL_DYNAMIC_DRAW);
glViewport(0, 0, piglit_width, piglit_height);
piglit_draw_rect(-1, -1, 2, 2);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, buffer);
map = (double *) glMapBuffer(GL_SHADER_STORAGE_BUFFER, GL_READ_ONLY);
for (i = 0; i < SSBO_SIZE; i++) {
if (DIFFER(map[i], expected[i])) {
printf("expected[%d] = %.14g. Read value: %.14g\n",
i, expected[i], map[i]);
pass = false;
}
}
glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
if (!piglit_check_gl_error(GL_NO_ERROR))
pass = false;
glDeleteProgram(prog);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
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