/**
* Free all texture images of the given texture object.
*
* \param ctx GL context.
* \param t texture object.
*
* \sa _mesa_clear_texture_image().
*/
void
_mesa_clear_texture_object(struct gl_context *ctx,
struct gl_texture_object *texObj)
{
GLuint i, j;
if (texObj->Target == 0)
return;
for (i = 0; i < MAX_FACES; i++) {
for (j = 0; j < MAX_TEXTURE_LEVELS; j++) {
struct gl_texture_image *texImage = texObj->Image[i][j];
if (texImage)
_mesa_clear_texture_image(ctx, texImage);
}
}
}
/**
* Unbind a pipe surface from a texture object. After the call,
* the texture object is marked dirty and will be (re-)validated.
*
* \param ps pipe surface to be unbound
* \param target texture target
* \param level image level
*/
int
st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
{
GET_CURRENT_CONTEXT(ctx);
const GLuint unit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct st_texture_object *stObj;
struct st_texture_image *stImage;
switch (target) {
case ST_TEXTURE_2D:
target = GL_TEXTURE_2D;
break;
case ST_TEXTURE_RECT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
default:
return 0;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
_mesa_lock_texture(ctx, texObj);
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
stObj = st_texture_object(texObj);
stImage = st_texture_image(texImage);
/* Make sure the pipe surface is still bound. The texture object is still
* considered surface based even if this is the last bound surface. */
if (stImage->pt == ps->texture) {
pipe_texture_reference(&stImage->pt, NULL);
_mesa_clear_texture_image(ctx, texImage);
_mesa_dirty_texobj(ctx, texObj, GL_TRUE);
}
_mesa_unlock_texture(ctx, texObj);
return 1;
}
/**
* Clear all fields of texture object to zeros. Used for proxy texture tests
* and to clean up when a texture memory allocation fails.
*/
static void
clear_texture_fields(struct gl_context *ctx,
struct gl_texture_object *texObj)
{
const GLenum target = texObj->Target;
const GLuint numFaces = _mesa_num_tex_faces(target);
GLint level;
GLuint face;
for (level = 0; level < ARRAY_SIZE(texObj->Image[0]); level++) {
for (face = 0; face < numFaces; face++) {
struct gl_texture_image *texImage =
get_tex_image(ctx, texObj, face, level);
if (!texImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexStorage");
return;
}
_mesa_clear_texture_image(ctx, texImage);
}
}
}
static boolean
st_context_teximage(struct st_context_iface *stctxi,
enum st_texture_type target,
int level, enum pipe_format internal_format,
struct pipe_resource *tex, boolean mipmap)
{
struct st_context *st = (struct st_context *) stctxi;
struct gl_context *ctx = st->ctx;
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct st_texture_object *stObj;
struct st_texture_image *stImage;
GLenum internalFormat;
GLuint width, height, depth;
switch (target) {
case ST_TEXTURE_1D:
target = GL_TEXTURE_1D;
break;
case ST_TEXTURE_2D:
target = GL_TEXTURE_2D;
break;
case ST_TEXTURE_3D:
target = GL_TEXTURE_3D;
break;
case ST_TEXTURE_RECT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
default:
return FALSE;
break;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
_mesa_lock_texture(ctx, texObj);
stObj = st_texture_object(texObj);
/* switch to surface based */
if (!stObj->surface_based) {
_mesa_clear_texture_object(ctx, texObj);
stObj->surface_based = GL_TRUE;
}
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
stImage = st_texture_image(texImage);
if (tex) {
gl_format texFormat;
/*
* XXX When internal_format and tex->format differ, st_finalize_texture
* needs to allocate a new texture with internal_format and copy the
* texture here into the new one. It will result in surface_copy being
* called on surfaces whose formats differ.
*
* To avoid that, internal_format is (wrongly) ignored here. A sane fix
* is to use a sampler view.
*/
if (!st_sampler_compat_formats(tex->format, internal_format))
internal_format = tex->format;
if (util_format_get_component_bits(internal_format,
UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
internalFormat = GL_RGBA;
else
internalFormat = GL_RGB;
texFormat = st_ChooseTextureFormat(ctx, internalFormat,
GL_BGRA, GL_UNSIGNED_BYTE);
_mesa_init_teximage_fields(ctx, texImage,
tex->width0, tex->height0, 1, 0,
internalFormat, texFormat);
width = tex->width0;
height = tex->height0;
depth = tex->depth0;
/* grow the image size until we hit level = 0 */
while (level > 0) {
if (width != 1)
width <<= 1;
if (height != 1)
height <<= 1;
if (depth != 1)
depth <<= 1;
level--;
}
}
else {
_mesa_clear_texture_image(ctx, texImage);
width = height = depth = 0;
}
pipe_resource_reference(&stImage->pt, tex);
stObj->width0 = width;
stObj->height0 = height;
stObj->depth0 = depth;
_mesa_dirty_texobj(ctx, texObj, GL_TRUE);
_mesa_unlock_texture(ctx, texObj);
return TRUE;
}
static boolean
st_context_teximage(struct st_context_iface *stctxi,
enum st_texture_type tex_type,
int level, enum pipe_format pipe_format,
struct pipe_resource *tex, boolean mipmap)
{
struct st_context *st = (struct st_context *) stctxi;
struct gl_context *ctx = st->ctx;
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct st_texture_object *stObj;
struct st_texture_image *stImage;
GLenum internalFormat;
GLuint width, height, depth;
GLenum target;
switch (tex_type) {
case ST_TEXTURE_1D:
target = GL_TEXTURE_1D;
break;
case ST_TEXTURE_2D:
target = GL_TEXTURE_2D;
break;
case ST_TEXTURE_3D:
target = GL_TEXTURE_3D;
break;
case ST_TEXTURE_RECT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
default:
return FALSE;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
_mesa_lock_texture(ctx, texObj);
stObj = st_texture_object(texObj);
/* switch to surface based */
if (!stObj->surface_based) {
_mesa_clear_texture_object(ctx, texObj);
stObj->surface_based = GL_TRUE;
}
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
stImage = st_texture_image(texImage);
if (tex) {
gl_format texFormat = st_pipe_format_to_mesa_format(pipe_format);
if (util_format_has_alpha(tex->format))
internalFormat = GL_RGBA;
else
internalFormat = GL_RGB;
_mesa_init_teximage_fields(ctx, texImage,
tex->width0, tex->height0, 1, 0,
internalFormat, texFormat);
width = tex->width0;
height = tex->height0;
depth = tex->depth0;
/* grow the image size until we hit level = 0 */
while (level > 0) {
if (width != 1)
width <<= 1;
if (height != 1)
height <<= 1;
if (depth != 1)
depth <<= 1;
level--;
}
}
else {
_mesa_clear_texture_image(ctx, texImage);
width = height = depth = 0;
}
pipe_resource_reference(&stImage->pt, tex);
stObj->width0 = width;
stObj->height0 = height;
stObj->depth0 = depth;
stObj->surface_format = pipe_format;
_mesa_dirty_texobj(ctx, texObj, GL_TRUE);
_mesa_unlock_texture(ctx, texObj);
return TRUE;
}
