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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <dirent.h>
#include <assert.h>
#include <waffle-1/waffle.h>
#include "piglit_ktx.h"
GLint
_mesa_components_in_format(GLenum format)
{
switch (format) {
case GL_RGB:
case GL_BGR:
return 3;
case GL_RGBA:
case GL_BGRA:
return 4;
default:
return -1;
}
}
GLint
_mesa_bytes_per_pixel(GLenum format, GLenum type)
{
GLint comps = _mesa_components_in_format(format);
if (comps < 0)
return -1;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
return comps * sizeof(GLubyte);
case GL_SHORT:
case GL_UNSIGNED_SHORT:
return comps * sizeof(GLshort);
case GL_INT:
case GL_UNSIGNED_INT:
return comps * sizeof(GLint);
case GL_FLOAT:
return comps * sizeof(GLfloat);
case GL_HALF_FLOAT:
return comps * sizeof(GLhalf);
default:
return -1;
}
}
void make_context()
{
/* Generate a context */
struct waffle_display *dpy;
struct waffle_config *config;
struct waffle_window *window;
struct waffle_context *ctx;
const int32_t init_attrs[] = {
WAFFLE_PLATFORM, WAFFLE_PLATFORM_X11_EGL,
0,
};
const int32_t config_attrs[] = {
WAFFLE_CONTEXT_API, WAFFLE_CONTEXT_OPENGL,
WAFFLE_RED_SIZE, 8,
WAFFLE_BLUE_SIZE, 8,
WAFFLE_GREEN_SIZE, 8,
0,
};
const int32_t window_width = 320;
const int32_t window_height = 240;
waffle_init(init_attrs);
dpy = waffle_display_connect(NULL);
// Exit if OpenGL ES2 is unsupported.
if (!waffle_display_supports_context_api(dpy, WAFFLE_CONTEXT_OPENGL)
|| !waffle_dl_can_open(WAFFLE_DL_OPENGL))
{
exit(EXIT_FAILURE);
}
config = waffle_config_choose(dpy, config_attrs);
window = waffle_window_create(config, window_width, window_height);
ctx = waffle_context_create(config, NULL);
waffle_make_current(dpy, window, ctx);
}
struct piglit_ktx {
struct piglit_ktx_info info;
/** \brief The raw KTX data. */
void *data;
/**
* \brief Array of images.
*
* Array length is piglit_ktx_info::num_images.
*/
struct piglit_ktx_image *images;
};
/* Accepts the mipmap dir, the output filename */
int
main(int argc, char *argv[])
{
/* Get arguments */
char * filename = argv[1];
int miplevels = atoi(argv[2]) + 1;
int arg_offset = 3;
unsigned imgs = argc - arg_offset;
/* Create GLES2 context */
make_context();
/* Structs used to write the final output */
KTX_image_info img_info[miplevels];
KTX_texture_info tex_info;
/* Fill out final struct */
/* Read in the file from memory */
char * cur_file = argv[arg_offset];
FILE* file = fopen(cur_file, "rb");
if (file == NULL)
printf("File not opened\n");
/* Skip the identifier and endianness */
int error = fseek(file, 16, SEEK_SET);
if (error)
printf("File seek bad\n");
/* Read the appropriate header bits */
size_t size_read = fread(&tex_info, 1, sizeof(tex_info), file);
if (size_read < sizeof(tex_info))
printf("bad read 1\n");
/* Close the file */
if (file != NULL)
fclose(file);
/* Update the array section */
tex_info.numberOfArrayElements = imgs;
int cur_lev;
int cur_img;
int w, h, expt;
GLuint tex[imgs];
glGenTextures(imgs, tex);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
/* Read in the files into memory */
for (cur_img = 0; cur_img < imgs; ++cur_img) {
cur_file = argv[cur_img+arg_offset];
printf("%s\n", cur_file);
struct piglit_ktx* file = piglit_ktx_read_file(cur_file);
if (!piglit_ktx_load_texture(file, &tex[cur_img], NULL)) {
printf("bad stuff just happened\n");
return 1;
}
w = file->info.pixel_width;
h = file->info.pixel_height;
piglit_ktx_destroy(file);
}
for (cur_lev = 0; cur_lev < miplevels; ++cur_lev) {
/* Get level size. All images have the same dimension */
printf("W: %d H: %d\n", w, h);
expt = w*h*_mesa_bytes_per_pixel(tex_info.glFormat, tex_info.glType);
/* Create the texture array */
img_info[cur_lev].size = expt*imgs;
img_info[cur_lev].data = (GLubyte*) malloc(img_info[cur_lev].size);
for (cur_img = 0; cur_img < imgs; ++cur_img) {
glBindTexture(GL_TEXTURE_2D, tex[cur_img]);
glGetTexImage(GL_TEXTURE_2D, cur_lev, tex_info.glFormat, tex_info.glType,
&img_info[cur_lev].data[cur_img*expt]);
}
w = w/2 ? w/2 : 1;
h = h/2 ? h/2 : 1;
}
/* Write memory object to file */
KTX_error_code kec;
kec = ktxWriteKTXN(filename, &tex_info, 0, NULL, miplevels, img_info);
printf("%s - %s\n", filename, ktxErrorString(kec));
/* Cleanup */
glDeleteTextures(imgs, tex);
for (cur_lev = 0; cur_lev < miplevels; ++cur_lev)
free(img_info[cur_lev].data);
return 0;
}
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