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[CoglTexture] Initialise tex->first_pixels to NULL in all constructors

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Otherwise if there is an error before the slices are created it will
try to free the first_pixels array and crash.

It now also checks whether first_pixels has been created before using
it to update the mipmaps. This should only happen for
cogl_texture_new_from_foreign and doesn't matter if the FBO extension
is available. It would be better in this case to fetch the first pixel
using glGetTexImage as Owen mentioned in the last commit.
This commit is contained in:
Neil Roberts 2009-06-09 11:13:11 +01:00
parent ae07dea93d
commit e521638f91
2 changed files with 10 additions and 2 deletions
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6
gl/cogl-texture.c
View File

@ -1256,6 +1256,7 @@ cogl_texture_new_with_size (guint width,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap.width = width;
tex->bitmap.height = height;
@ -1322,6 +1323,7 @@ cogl_texture_new_from_data (guint width,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap.width = width;
tex->bitmap.height = height;
@ -1387,6 +1389,7 @@ cogl_texture_new_from_bitmap (CoglHandle bmp_handle,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap = *bmp;
tex->bitmap_owner = FALSE;
@ -1553,6 +1556,7 @@ cogl_texture_new_from_foreign (GLuint gl_handle,
tex->is_foreign = TRUE;
tex->auto_mipmap = (gl_gen_mipmap == GL_TRUE) ? TRUE : FALSE;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
bpp = _cogl_get_format_bpp (format);
tex->bitmap.format = format;
@ -1784,7 +1788,7 @@ _cogl_texture_ensure_mipmaps (CoglHandle handle)
/* glGenerateMipmap is defined in the FBO extension */
if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
GE( glGenerateMipmap (tex->gl_target) );
else
else if (tex->first_pixels)
{
CoglTexturePixel *pixel = tex->first_pixels + i;
/* Temporarily enable automatic mipmap generation and

6
gles/cogl-texture.c
View File

@ -1331,6 +1331,7 @@ cogl_texture_new_with_size (guint width,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap.width = width;
tex->bitmap.height = height;
@ -1397,6 +1398,7 @@ cogl_texture_new_from_data (guint width,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap.width = width;
tex->bitmap.height = height;
@ -1460,6 +1462,7 @@ cogl_texture_new_from_bitmap (CoglHandle bmp_handle,
tex->is_foreign = FALSE;
tex->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
tex->bitmap = *bmp;
tex->bitmap_owner = TRUE;
@ -1629,6 +1632,7 @@ cogl_texture_new_from_foreign (GLuint gl_handle,
tex->is_foreign = TRUE;
tex->auto_mipmap = (gl_gen_mipmap == GL_TRUE) ? TRUE : FALSE;
tex->mipmaps_dirty = TRUE;
tex->first_pixels = NULL;
bpp = _cogl_get_format_bpp (format);
tex->bitmap.format = format;
@ -1860,7 +1864,7 @@ _cogl_texture_ensure_mipmaps (CoglHandle handle)
/* glGenerateMipmap is defined in the FBO extension */
if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
GE( cogl_wrap_glGenerateMipmap (tex->gl_target) );
else
else if (tex->first_pixels)
{
CoglTexturePixel *pixel = tex->first_pixels + i;
/* Temporarily enable automatic mipmap generation and