void
finiTexture (CompScreen *screen,
CompTexture *texture)
{
if (texture->name)
{
releasePixmapFromTexture (screen, texture);
glDeleteTextures (1, &texture->name);
}
}
void
finiTexture(CompScreen *screen,
CompTexture *texture)
{
if (texture->name)
{
makeScreenCurrent(screen);
compiz_texture_activate(texture, 1, NULL);
releasePixmapFromTexture(screen, texture);
compiz_glapi->glDeleteTextures(1, &texture->name);
}
}
static void
scalefilterFreeFilterText (CompScreen *s)
{
FILTER_SCREEN (s);
if (!fs->filterInfo)
return;
if (!fs->filterInfo->textPixmap)
return;
releasePixmapFromTexture(s, &fs->filterInfo->textTexture);
XFreePixmap (s->display->display, fs->filterInfo->textPixmap);
initTexture (s, &fs->filterInfo->textTexture);
fs->filterInfo->textPixmap = None;
}
static Bool
imageToTexture(CompScreen *screen,
CompTexture *texture,
const char *image,
unsigned int width,
unsigned int height,
GLenum format,
GLenum type)
{
char *data;
int i;
GLint internalFormat;
data = malloc(4 * width * height);
if (!data)
return FALSE;
for (i = 0; i < height; i++)
memcpy(&data[i * width * 4],
&image[(height - i - 1) * width * 4],
width * 4);
makeScreenCurrent(screen);
releasePixmapFromTexture(screen, texture);
if (screen->textureNonPowerOfTwo ||
(POWER_OF_TWO(width) && POWER_OF_TWO(height)))
{
texture->target = GL_TEXTURE_2D;
texture->matrix.xx = 1.0f / width;
texture->matrix.yy = -1.0f / height;
texture->matrix.y0 = 1.0f;
texture->mipmap = TRUE;
}
else
{
texture->target = GL_TEXTURE_RECTANGLE_NV;
texture->matrix.xx = 1.0f;
texture->matrix.yy = -1.0f;
texture->matrix.y0 = height;
texture->mipmap = FALSE;
}
if (!texture->name)
compiz_glapi->glGenTextures(1, &texture->name);
compiz_glapi->glBindTexture(texture->target, texture->name);
internalFormat =
(screen->opt[COMP_SCREEN_OPTION_TEXTURE_COMPRESSION].value.b &&
screen->textureCompression ?
GL_COMPRESSED_RGBA_ARB : GL_RGBA);
compiz_glapi->glTexImage2D(texture->target, 0, internalFormat, width, height, 0,
format, type, data);
texture->filter = GL_NEAREST;
compiz_glapi->glTexParameteri(texture->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
compiz_glapi->glTexParameteri(texture->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
compiz_glapi->glTexParameteri(texture->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
compiz_glapi->glTexParameteri(texture->target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
texture->wrap = GL_CLAMP_TO_EDGE;
compiz_glapi->glBindTexture(texture->target, 0);
free(data);
return TRUE;
}
Bool
readImageToTexture (CompScreen *screen,
CompTexture *texture,
char *imageFileName,
unsigned int *returnWidth,
unsigned int *returnHeight)
{
char *data, *image;
unsigned int width, height;
int i;
if (!readPng (imageFileName, &image, &width, &height))
{
fprintf (stderr, "%s: Failed to load image: %s\n",
programName, imageFileName);
return FALSE;
}
data = malloc (4 * width * height);
if (!data)
{
free (image);
return FALSE;
}
for (i = 0; i < height; i++)
memcpy (&data[i * width * 4],
&image[(height - i - 1) * width * 4],
width * 4);
free (image);
releasePixmapFromTexture (screen, texture);
if (screen->textureNonPowerOfTwo ||
(POWER_OF_TWO (width) && POWER_OF_TWO (height)))
{
texture->target = GL_TEXTURE_2D;
texture->matrix.xx = 1.0f / width;
texture->matrix.yy = -1.0f / height;
texture->matrix.y0 = 1.0f;
}
else
{
texture->target = GL_TEXTURE_RECTANGLE_NV;
texture->matrix.xx = 1.0f;
texture->matrix.yy = -1.0f;
texture->matrix.y0 = height;
}
if (!texture->name)
glGenTextures (1, &texture->name);
glBindTexture (texture->target, texture->name);
glTexImage2D (texture->target, 0, GL_RGB, width, height, 0, GL_BGRA,
#if IMAGE_BYTE_ORDER == MSBFirst
GL_UNSIGNED_INT_8_8_8_8_REV,
#else
GL_UNSIGNED_BYTE,
#endif
data);
texture->filter = COMP_TEXTURE_FILTER_FAST;
glTexParameteri (texture->target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (texture->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri (texture->target, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (texture->target, GL_TEXTURE_WRAP_T, GL_CLAMP);
glBindTexture (texture->target, 0);
free (data);
*returnWidth = width;
*returnHeight = height;
return TRUE;
}
