/**
* This is the implementation for glGetnTexImageARB, glGetTextureImage,
* and glGetTexImage.
*
* Requires caller to pass in texImage object because _mesa_GetTextureImage
* must handle the GL_TEXTURE_CUBE_MAP target.
*
* \param target texture target.
* \param level image level.
* \param format pixel data format for returned image.
* \param type pixel data type for returned image.
* \param bufSize size of the pixels data buffer.
* \param pixels returned pixel data.
* \param dsa True when the caller is an ARB_direct_state_access function,
* false otherwise
*/
void
_mesa_get_texture_image(struct gl_context *ctx,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage, GLenum target,
GLint level, GLenum format, GLenum type,
GLsizei bufSize, GLvoid *pixels, bool dsa)
{
assert(texObj);
assert(texImage);
FLUSH_VERTICES(ctx, 0);
/*
* Legal target checking has been moved up to GetnTexImage and
* GetTextureImage so that it can be caught before receiving a NULL
* texImage object and exiting.
*/
if (getteximage_error_check(ctx, texImage, target, level, format,
type, bufSize, pixels, dsa)) {
return;
}
if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
/* not an error, do nothing */
return;
}
if (_mesa_is_zero_size_texture(texImage))
return;
if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
_mesa_debug(ctx, "glGetTex%sImage(tex %u) format = %s, w=%d, h=%d,"
" dstFmt=0x%x, dstType=0x%x\n",
dsa ? "ture": "",
texObj->Name,
_mesa_get_format_name(texImage->TexFormat),
texImage->Width, texImage->Height,
format, type);
}
_mesa_lock_texture(ctx, texObj);
{
ctx->Driver.GetTexImage(ctx, format, type, pixels, texImage);
}
_mesa_unlock_texture(ctx, texObj);
}
/**
* Get texture image. Called by glGetTexImage.
*
* \param target texture target.
* \param level image level.
* \param format pixel data format for returned image.
* \param type pixel data type for returned image.
* \param bufSize size of the pixels data buffer.
* \param pixels returned pixel data.
*/
void GLAPIENTRY
_mesa_GetnTexImageARB( GLenum target, GLint level, GLenum format,
GLenum type, GLsizei bufSize, GLvoid *pixels )
{
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
if (getteximage_error_check(ctx, target, level, format, type,
bufSize, pixels)) {
return;
}
if (!_mesa_is_bufferobj(ctx->Pack.BufferObj) && !pixels) {
/* not an error, do nothing */
return;
}
texObj = _mesa_get_current_tex_object(ctx, target);
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (_mesa_is_zero_size_texture(texImage))
return;
if (MESA_VERBOSE & (VERBOSE_API | VERBOSE_TEXTURE)) {
_mesa_debug(ctx, "glGetTexImage(tex %u) format = %s, w=%d, h=%d,"
" dstFmt=0x%x, dstType=0x%x\n",
texObj->Name,
_mesa_get_format_name(texImage->TexFormat),
texImage->Width, texImage->Height,
format, type);
}
_mesa_lock_texture(ctx, texObj);
{
ctx->Driver.GetTexImage(ctx, format, type, pixels, texImage);
}
_mesa_unlock_texture(ctx, texObj);
}
