static bool
run_test(const struct image_target_info *target,
const struct image_extent size)
{
const struct grid_info grid = {
GL_FRAGMENT_SHADER_BIT,
get_image_format(GL_RGBA32F),
image_optimal_extent(size)
};
const struct image_info img = {
target, grid.format, size,
image_format_epsilon(grid.format)
};
GLuint prog = generate_program(
grid, GL_FRAGMENT_SHADER,
concat(image_hunk(img, ""),
hunk("readonly uniform IMAGE_T src_img;\n"
"writeonly uniform IMAGE_T dst_img;\n"
"\n"
"GRID_T op(ivec2 idx, GRID_T x) {\n"
" imageStore(dst_img, IMAGE_ADDR(idx),"
" imageLoad(src_img, IMAGE_ADDR(idx)));\n"
" return x;\n"
"}\n"), NULL));
bool ret = prog && init_fb(grid) &&
init_image(img, 0) &&
init_image(img, 1) &&
set_uniform_int(prog, "src_img", 0) &&
set_uniform_int(prog, "dst_img", 1) &&
draw_grid(grid, prog) &&
check(img);
glDeleteProgram(prog);
return ret;
}
bool
download_image_levels(const struct image_info img, unsigned num_levels,
unsigned unit, uint32_t *r_pixels)
{
const unsigned m = image_num_components(img.format);
int i, l;
glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT |
GL_BUFFER_UPDATE_BARRIER_BIT |
GL_PIXEL_BUFFER_BARRIER_BIT |
GL_SHADER_IMAGE_ACCESS_BARRIER_BIT);
glBindTexture(img.target->target, textures[unit]);
switch (img.target->target) {
case GL_TEXTURE_1D:
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
case GL_TEXTURE_RECTANGLE:
case GL_TEXTURE_1D_ARRAY:
case GL_TEXTURE_2D_ARRAY:
case GL_TEXTURE_CUBE_MAP_ARRAY:
assert(img.target->target != GL_TEXTURE_RECTANGLE ||
num_levels == 1);
for (l = 0; l < num_levels; ++l)
glGetTexImage(img.target->target, l,
img.format->pixel_format,
image_base_type(img.format),
&r_pixels[m * image_level_offset(img, l)]);
break;
case GL_TEXTURE_CUBE_MAP:
for (l = 0; l < num_levels; ++l) {
const unsigned offset = m * image_level_offset(img, l);
const unsigned face_sz =
m * product(image_level_size(img, l)) / 6;
for (i = 0; i < 6; ++i)
glGetTexImage(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
l, img.format->pixel_format,
image_base_type(img.format),
&r_pixels[offset + face_sz * i]);
}
break;
case GL_TEXTURE_BUFFER: {
/*
* glGetTexImage() isn't supposed to work with buffer
* textures. We copy the packed pixels to a texture
* with the same internal format as the image to let
* the GL unpack it for us.
*/
const struct image_extent grid = image_optimal_extent(img.size);
GLuint packed_tex;
assert(num_levels == 1);
glGenTextures(1, &packed_tex);
glBindTexture(GL_TEXTURE_2D, packed_tex);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffers[unit]);
glTexImage2D(GL_TEXTURE_2D, 0, img.format->format,
grid.x, grid.y, 0, img.format->pixel_format,
img.format->pixel_type, NULL);
glGetTexImage(GL_TEXTURE_2D, 0, img.format->pixel_format,
image_base_type(img.format), r_pixels);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
glDeleteTextures(1, &packed_tex);
break;
}
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: {
/*
* GL doesn't seem to provide any direct way to read
* back a multisample texture, so we use imageLoad()
* to copy its contents to a larger single-sample 2D
* texture from the fragment shader.
*/
const struct grid_info grid = {
get_image_stage(GL_FRAGMENT_SHADER)->bit,
img.format,
image_optimal_extent(img.size)
};
GLuint prog = generate_program(
grid, GL_FRAGMENT_SHADER,
concat(image_hunk(img, "SRC_"),
image_hunk(image_info_for_grid(grid), "DST_"),
hunk("readonly SRC_IMAGE_UNIFORM_T src_img;\n"
"writeonly DST_IMAGE_UNIFORM_T dst_img;\n"
"\n"
"GRID_T op(ivec2 idx, GRID_T x) {\n"
" imageStore(dst_img, DST_IMAGE_ADDR(idx),\n"
" imageLoad(src_img, SRC_IMAGE_ADDR(idx)));\n"
" return x;\n"
"}\n"), NULL));
bool ret = prog && generate_fb(grid, 1);
GLuint tmp_tex;
assert(num_levels == 1);
glGenTextures(1, &tmp_tex);
glBindTexture(GL_TEXTURE_2D, tmp_tex);
glTexImage2D(GL_TEXTURE_2D, 0, img.format->format,
grid.size.x, grid.size.y, 0,
img.format->pixel_format, image_base_type(img.format),
NULL);
glBindImageTexture(unit, textures[unit], 0, GL_TRUE, 0,
GL_READ_ONLY, img.format->format);
glBindImageTexture(6, tmp_tex, 0, GL_TRUE, 0,
GL_WRITE_ONLY, img.format->format);
ret &= set_uniform_int(prog, "src_img", unit) &&
set_uniform_int(prog, "dst_img", 6) &&
draw_grid(grid, prog);
glMemoryBarrier(GL_TEXTURE_UPDATE_BARRIER_BIT);
glGetTexImage(GL_TEXTURE_2D, 0, img.format->pixel_format,
image_base_type(img.format), r_pixels);
glDeleteProgram(prog);
glDeleteTextures(1, &tmp_tex);
glBindFramebuffer(GL_FRAMEBUFFER, fb[0]);
glViewportIndexedfv(0, vp[0]);
if (!ret)
return false;
break;
}
default:
abort();
}
return piglit_check_gl_error(GL_NO_ERROR);
}
bool
upload_image_levels(const struct image_info img, unsigned num_levels,
unsigned level, unsigned unit, const uint32_t *pixels)
{
const unsigned m = image_num_components(img.format);
int i, l;
if (get_texture(unit)) {
glDeleteTextures(1, &textures[unit]);
textures[unit] = 0;
}
if (get_buffer(unit)) {
glDeleteBuffers(1, &buffers[unit]);
buffers[unit] = 0;
}
glGenTextures(1, &textures[unit]);
glBindTexture(img.target->target, textures[unit]);
switch (img.target->target) {
case GL_TEXTURE_1D:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage1D(GL_TEXTURE_1D, l, img.format->format,
size.x, 0, img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_2D:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage2D(GL_TEXTURE_2D, l, img.format->format,
size.x, size.y, 0,
img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_3D:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage3D(GL_TEXTURE_3D, l, img.format->format,
size.x, size.y, size.z, 0,
img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_RECTANGLE:
assert(num_levels == 1);
glTexImage2D(GL_TEXTURE_RECTANGLE, 0, img.format->format,
img.size.x, img.size.y, 0, img.format->pixel_format,
image_base_type(img.format), pixels);
break;
case GL_TEXTURE_CUBE_MAP:
for (l = 0; l < num_levels; ++l) {
const unsigned offset = m * image_level_offset(img, l);
const struct image_extent size = image_level_size(img, l);
const unsigned face_sz = m * product(size) / 6;
for (i = 0; i < 6; ++i)
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, l,
img.format->format, size.x, size.y, 0,
img.format->pixel_format,
image_base_type(img.format),
&pixels[offset + face_sz * i]);
}
break;
case GL_TEXTURE_BUFFER: {
/*
* glTexImage*() isn't supposed to work with buffer
* textures. We copy the unpacked pixels to a texture
* with the desired internal format to let the GL pack
* them for us.
*/
const struct image_extent grid = image_optimal_extent(img.size);
GLuint packed_tex;
assert(num_levels == 1);
glGenBuffers(1, &buffers[unit]);
glBindBuffer(GL_PIXEL_PACK_BUFFER, buffers[unit]);
glBufferData(GL_PIXEL_PACK_BUFFER,
img.size.x * image_pixel_size(img.format) / 8,
NULL, GL_STATIC_DRAW);
glGenTextures(1, &packed_tex);
glBindTexture(GL_TEXTURE_2D, packed_tex);
glTexImage2D(GL_TEXTURE_2D, 0, img.format->format,
grid.x, grid.y, 0, img.format->pixel_format,
image_base_type(img.format), pixels);
glGetTexImage(GL_TEXTURE_2D, 0, img.format->pixel_format,
img.format->pixel_type, NULL);
glDeleteTextures(1, &packed_tex);
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
glTexBuffer(GL_TEXTURE_BUFFER, image_compat_format(img.format),
buffers[unit]);
break;
}
case GL_TEXTURE_1D_ARRAY:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage2D(GL_TEXTURE_1D_ARRAY, l, img.format->format,
size.x, size.y, 0, img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_2D_ARRAY:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage3D(GL_TEXTURE_2D_ARRAY, l, img.format->format,
size.x, size.y, size.z, 0,
img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
for (l = 0; l < num_levels; ++l) {
const struct image_extent size = image_level_size(img, l);
glTexImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, l, img.format->format,
size.x, size.y, size.z, 0,
img.format->pixel_format,
image_base_type(img.format),
&pixels[m * image_level_offset(img, l)]);
}
break;
case GL_TEXTURE_2D_MULTISAMPLE:
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: {
/*
* GL doesn't seem to provide any direct way to
* initialize a multisample texture, so we use
* imageStore() to render to it from the fragment
* shader copying the contents of a larger
* single-sample 2D texture.
*/
const struct grid_info grid = {
get_image_stage(GL_FRAGMENT_SHADER)->bit,
img.format,
image_optimal_extent(img.size)
};
GLuint prog = generate_program(
grid, GL_FRAGMENT_SHADER,
concat(image_hunk(image_info_for_grid(grid), "SRC_"),
image_hunk(img, "DST_"),
hunk("readonly SRC_IMAGE_UNIFORM_T src_img;\n"
"writeonly DST_IMAGE_UNIFORM_T dst_img;\n"
"\n"
"GRID_T op(ivec2 idx, GRID_T x) {\n"
" imageStore(dst_img, DST_IMAGE_ADDR(idx),\n"
" imageLoad(src_img, SRC_IMAGE_ADDR(idx)));\n"
" return x;\n"
"}\n"), NULL));
bool ret = prog && generate_fb(grid, 1);
GLuint tmp_tex;
assert(num_levels == 1);
glGenTextures(1, &tmp_tex);
glBindTexture(GL_TEXTURE_2D, tmp_tex);
if (img.target->target == GL_TEXTURE_2D_MULTISAMPLE_ARRAY) {
glTexImage3DMultisample(GL_TEXTURE_2D_MULTISAMPLE_ARRAY,
img.size.x, img.format->format,
img.size.y, img.size.z, img.size.w,
GL_FALSE);
} else {
glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE,
img.size.x, img.format->format,
img.size.y, img.size.z,
GL_FALSE);
}
glTexImage2D(GL_TEXTURE_2D, 0, img.format->format,
grid.size.x, grid.size.y, 0,
img.format->pixel_format, image_base_type(img.format),
pixels);
glBindImageTexture(unit, textures[unit], 0, GL_TRUE, 0,
GL_WRITE_ONLY, img.format->format);
glBindImageTexture(6, tmp_tex, 0, GL_TRUE, 0,
GL_READ_ONLY, img.format->format);
ret &= set_uniform_int(prog, "src_img", 6) &&
set_uniform_int(prog, "dst_img", unit) &&
draw_grid(grid, prog);
glDeleteProgram(prog);
glDeleteTextures(1, &tmp_tex);
glBindFramebuffer(GL_FRAMEBUFFER, fb[0]);
glViewportIndexedfv(0, vp[0]);
glMemoryBarrier(GL_SHADER_IMAGE_ACCESS_BARRIER_BIT);
if (!ret)
return false;
break;
}
default:
abort();
}
glBindImageTexture(unit, textures[unit], level, GL_TRUE, 0,
GL_READ_WRITE, img.format->format);
return piglit_check_gl_error(GL_NO_ERROR);
}
