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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-std430-fp64-shader.c
*
* Tests that shader storage block reads/writes in GLSL works correctly (offsets
* and values) when interface packing qualifier is std430, using doubles.
*
* From GL_ARB_shader_storage_buffer_object:
*
* "When using the "std430" storage layout, shader storage
* blocks will be laid out in buffer storage identically to uniform and
* shader storage blocks using the "std140" layout, except that the base
* alignment of arrays of scalars and vectors in rule (4) and of structures
* in rule (9) are not rounded up a multiple of the base alignment of a vec4."
*/
#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 68
#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 B { double b1[3]; };\n"
"struct A {\n"
" double a1;\n"
" dvec3 a2;\n"
" dmat2 a4[2];\n"
" double a5;\n"
" B sb[2];\n"
"};\n"
"\n"
"layout(std430, binding=2) buffer ssbo {\n"
" dvec2 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" dmat3x4 m;\n"
" dvec2 v2a[3];\n"
" dvec3 v3a[2];\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"
" v.yz = dvec2(1.0, 2.0);\n"
" d = 4.0lf;\n"
" s.a2.x = 6.0lf;\n"
" s.a2.y = 7.0lf;\n"
" s.sb[0].b1[0] = 18.333333333333333259lf;\n"
" s.sb[0].b1[1] = 19.0lf;\n"
" m[1] = dvec4(25.0, 26.0, 27.0, 28.0);\n"
" v2a[0].yx = dvec2(34.0, 33.0) * s.a5;\n"
" v2a[1].y = 36.0lf;\n"
" v3a[0].xz = dvec2(39.0, 41.0);\n"
" v3a[1].y = 43.0lf;\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 B { double b1[3]; };\n"
"struct A {\n"
" double a1;\n"
" dvec3 a2;\n"
" dmat2 a4[2];\n"
" double a5;\n"
" B sb[2];\n"
"};\n"
"\n"
"layout(std430, binding=2) buffer ssbo {\n"
" dvec2 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" dmat3x4 m;\n"
" dvec2 v2a[3];\n"
" dvec3 v3a[2];\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[0] = 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 B { double b1[3]; };\n"
"struct A {\n"
" double a1;\n"
" dvec3 a2;\n"
" dmat2 a4[2];\n"
" double a5;\n"
" B sb[2];\n"
"};\n"
"\n"
"layout(std430, binding=2) buffer ssbo {\n"
" dvec2 u;\n"
" dvec4 v;\n"
" double d;\n"
" A s;\n"
" dmat3x4 m;\n"
" dvec2 v2a[3];\n"
" dvec3 v3a[2];\n"
" double unsized_array[];\n"
"};\n"
"\n"
"out vec4 color;\n"
"\n"
"void main() {\n"
" color = vec4(0,1,0,1);\n"
" v.xw = dvec2(0.0, 3.0) + u;\n"
" s.a2.z = 8.0lf;\n"
" s.a4[1] = dmat2(14.0, 15.0, 16.0, 17.0);\n"
" s.sb[1].b1[2] = 20.0lf;\n"
" m[0] = dvec4(21.333333333333333259lf, 22.0, 23.0, 24.0);\n"
" m[2] = dvec4(29.0, 30.0, 31.0, 32.0);\n"
" v2a[1].x = 35.0lf;\n"
" v2a[2].xy = dvec2(37.0, 38.0);\n"
" v3a[0].y = 40.0lf;\n"
" v3a[1].xz = dvec2(42.0, 44.0);\n"
" int index = int(v.z + gl_FragCoord.x);\n"
" unsized_array[index] = unsized_array.length() * 2.0LF;\n"
"}\n";
GLuint prog;
double ssbo_values[SSBO_SIZE] = { 6.0, 7.0, 0.0, 0.0, // dvec2 u
0.0, 0.0, 0.0, 0.0, // dvec4 v
0.0, 0.0, 0.0, 0.0, // double d
1.0, 0.0, 0.0, 0.0, // double s.a1
0.0, 0.0, 0.0, 0.0, // dvec3 s.a2
0.0, 0.0, 0.0, 0.0, // dmat2 s.a4[0]
0.0, 0.0, 0.0, 0.0, // dmat2 s.a4[1]
2.0, 0.0, 0.0, 0.0, // double s.a5, s.sb[0].b1
0.0, 0.0, 0.0, 0.0, // double s.sb[1].b1
0.0, 0.0, 0.0, 0.0, // dmat3x4 m[0]
0.0, 0.0, 0.0, 0.0, // dmat3x4 m[1]
0.0, 0.0, 0.0, 0.0, // dmat3x4 m[2]
0.0, 0.0, 0.0, 0.0, // dvec2 v2a[3]
0.0, 0.0, 0.0, 0.0, //
0.0, 0.0, 0.0, 0.0, // dvec3 v3a[2]
0.0, 0.0, 0.0, 0.0, //
0.0, 0.0, 0.0, 0.0, // double unsized_array[0-3]
};
double expected[SSBO_SIZE] = { 6.0, 7.0, 0.0, 0.0, // dvec2 u expected[0]
6.0, 1.0, 2.0, 10.0, // dvec4 v expected[4]
4.0, 0.0, 0.0, 0.0, // double d expected[8]
1.0, 0.0, 0.0, 0.0, // double s.a1 expected[12]
6.0, 7.0, 8.0, 0.0, // dvec3 s.a2 expected[16]
-1.333333333333333259, 11.0, 12.0, 13.0, // dmat2 s.a4[0] expected[20]
14.0, 15.0, 16.0, 17.0, // dmat2 s.a4[1] expected[24]
2.0, 18.333333333333333259, 19.0, 0.0, // double s.a5, s.sb[0].b1 expected[28]
0.0, 0.0, 20.0, 0.0, // double s.sb[1].b1 expected[32]
21.333333333333333259, 22.0, 23.0, 24.0, // dmat3x4 m[0] expected[36]
25.0, 26.0, 27.0, 28.0, // dmat3x4 m[1] expected[40]
29.0, 30.0, 31.0, 32.0, // dmat3x4 m[2] expected[44]
66.0, 68.0, 35.0, 36.0, // dvec2 v2a[3] expected[48]
37.0, 38.0, 0.0, 0.0, // expected[52]
39.0, 40.0, 41.0, 0.0, // dvec3 v3a[2] expected[56]
42.0, 43.0, 44.0, 0.0, // expected[60]
4.0, 4.0, 4.0, 4.0, // double unsized_array[0-3] expected[64]
};
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");
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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