void image_get_sub_data(struct vg_image * image,
void * data,
VGint dataStride,
VGImageFormat dataFormat,
VGint sx, VGint sy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
VGfloat *df = (VGfloat*)temp;
VGint y = 0, yStep = 1;
VGint i;
VGubyte *dst = (VGubyte *)data;
{
struct pipe_transfer *transfer =
screen->get_tex_transfer(screen,
image->texture, 0, 0, 0,
PIPE_TRANSFER_READ,
0, 0,
image->x + image->width,
image->y + image->height);
/* Do a row at a time to flip image data vertically */
for (i = 0; i < height; i++) {
#if 0
debug_printf("%d-%d == %d\n", sy, height, y);
#endif
pipe_get_tile_rgba(transfer, sx+image->x, y, width, 1, df);
y += yStep;
_vega_pack_rgba_span_float(ctx, width, temp, dataFormat, dst);
dst += dataStride;
}
screen->tex_transfer_destroy(transfer);
}
}
void vgReadPixels(void * data, VGint dataStride,
VGImageFormat dataFormat,
VGint sx, VGint sy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
VGfloat *df = (VGfloat*)temp;
VGint y = (fb->height - sy) - 1, yStep = -1;
VGint i;
VGubyte *dst = (VGubyte *)data;
VGint xoffset = 0, yoffset = 0;
if (!supported_image_format(dataFormat)) {
vg_set_error(ctx, VG_UNSUPPORTED_IMAGE_FORMAT_ERROR);
return;
}
if (!data || !is_aligned(data)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
/* make sure rendering has completed */
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
if (sx < 0) {
xoffset = -sx;
xoffset *= _vega_size_for_format(dataFormat);
width += sx;
sx = 0;
}
if (sy < 0) {
yoffset = -sy;
height += sy;
sy = 0;
y = (fb->height - sy) - 1;
yoffset *= dataStride;
}
{
struct pipe_transfer *transfer;
transfer = screen->get_tex_transfer(screen, strb->texture, 0, 0, 0,
PIPE_TRANSFER_READ,
0, 0, width, height);
/* Do a row at a time to flip image data vertically */
for (i = 0; i < height; i++) {
#if 0
debug_printf("%d-%d == %d\n", sy, height, y);
#endif
pipe_get_tile_rgba(transfer, sx, y, width, 1, df);
y += yStep;
_vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
dst + yoffset + xoffset);
dst += dataStride;
}
screen->tex_transfer_destroy(transfer);
}
}
void vegaReadPixels(void * data, VGint dataStride,
VGImageFormat dataFormat,
VGint sx, VGint sy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct pipe_context *pipe = ctx->pipe;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
VGfloat temp[VEGA_MAX_IMAGE_WIDTH][4];
VGfloat *df = (VGfloat*)temp;
VGint i;
VGubyte *dst = (VGubyte *)data;
VGint xoffset = 0, yoffset = 0;
if (!supported_image_format(dataFormat)) {
vg_set_error(ctx, VG_UNSUPPORTED_IMAGE_FORMAT_ERROR);
return;
}
if (!data || !is_aligned(data)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (sx < 0) {
xoffset = -sx;
xoffset *= _vega_size_for_format(dataFormat);
width += sx;
sx = 0;
}
if (sy < 0) {
yoffset = -sy;
yoffset *= dataStride;
height += sy;
sy = 0;
}
if (sx + width > stfb->width || sy + height > stfb->height) {
width = stfb->width - sx;
height = stfb->height - sy;
/* nothing to read */
if (width <= 0 || height <= 0)
return;
}
{
VGint y = (stfb->height - sy) - 1, yStep = -1;
struct pipe_transfer *transfer;
void *map;
map = pipe_transfer_map(pipe, strb->texture, 0, 0,
PIPE_TRANSFER_READ,
0, 0, sx + width, stfb->height - sy,
&transfer);
/* Do a row at a time to flip image data vertically */
for (i = 0; i < height; i++) {
#if 0
debug_printf("%d-%d == %d\n", sy, height, y);
#endif
pipe_get_tile_rgba(transfer, map, sx, y, width, 1, df);
y += yStep;
_vega_pack_rgba_span_float(ctx, width, temp, dataFormat,
dst + yoffset + xoffset);
dst += dataStride;
}
pipe->transfer_unmap(pipe, transfer);
}
}
