/**
* Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
* This is used to copy mipmap images from one texture buffer to another.
* This typically happens when our initial guess at the total texture size
* is incorrect (see the guess_and_alloc_texture() function).
*/
void
st_texture_image_copy(struct pipe_context *pipe,
struct pipe_resource *dst, GLuint dstLevel,
struct pipe_resource *src, GLuint srcLevel,
GLuint face)
{
GLuint width = u_minify(dst->width0, dstLevel);
GLuint height = u_minify(dst->height0, dstLevel);
GLuint depth = u_minify(dst->depth0, dstLevel);
struct pipe_box src_box;
GLuint i;
if (u_minify(src->width0, srcLevel) != width ||
u_minify(src->height0, srcLevel) != height ||
u_minify(src->depth0, srcLevel) != depth) {
/* The source image size doesn't match the destination image size.
* This can happen in some degenerate situations such as rendering to a
* cube map face which was set up with mismatched texture sizes.
*/
return;
}
src_box.x = 0;
src_box.y = 0;
src_box.width = width;
src_box.height = height;
src_box.depth = 1;
if (src->target == PIPE_TEXTURE_1D_ARRAY ||
src->target == PIPE_TEXTURE_2D_ARRAY ||
src->target == PIPE_TEXTURE_CUBE_ARRAY) {
face = 0;
depth = src->array_size;
}
/* Loop over 3D image slices */
/* could (and probably should) use "true" 3d box here -
but drivers can't quite handle it yet */
for (i = face; i < face + depth; i++) {
src_box.z = i;
if (0) {
print_center_pixel(pipe, src);
}
pipe->resource_copy_region(pipe,
dst,
dstLevel,
0, 0, i,/* destX, Y, Z */
src,
srcLevel,
&src_box);
}
}
/**
* Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
* This is used to copy mipmap images from one texture buffer to another.
* This typically happens when our initial guess at the total texture size
* is incorrect (see the guess_and_alloc_texture() function).
*/
void
st_texture_image_copy(struct pipe_context *pipe,
struct pipe_resource *dst, GLuint dstLevel,
struct pipe_resource *src, GLuint srcLevel,
GLuint face)
{
GLuint width = u_minify(dst->width0, dstLevel);
GLuint height = u_minify(dst->height0, dstLevel);
GLuint depth = u_minify(dst->depth0, dstLevel);
struct pipe_subresource dstsub, srcsub;
GLuint i;
assert(u_minify(src->width0, srcLevel) == width);
assert(u_minify(src->height0, srcLevel) == height);
assert(u_minify(src->depth0, srcLevel) == depth);
dstsub.face = face;
dstsub.level = dstLevel;
srcsub.face = face;
srcsub.level = srcLevel;
/* Loop over 3D image slices */
for (i = 0; i < depth; i++) {
if (0) {
print_center_pixel(pipe, src);
}
pipe->resource_copy_region(pipe,
dst,
dstsub,
0, 0, i,/* destX, Y, Z */
src,
srcsub,
0, 0, i,/* srcX, Y, Z */
width, height);
}
}
