void vegaRenderToMask(VGPath path,
VGbitfield paintModes,
VGMaskOperation operation)
{
struct vg_context *ctx = vg_current_context();
if (path == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (!paintModes || (paintModes&(~(VG_STROKE_PATH|VG_FILL_PATH)))) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (operation < VG_CLEAR_MASK ||
operation > VG_SUBTRACT_MASK) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (!vg_object_is_valid(path, VG_OBJECT_PATH)) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
vg_validate_state(ctx);
mask_render_to(handle_to_path(path), paintModes, operation);
}
void vegaMask(VGHandle mask, VGMaskOperation operation,
VGint x, VGint y,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
if (width <=0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (operation < VG_CLEAR_MASK || operation > VG_SUBTRACT_MASK) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
if (operation == VG_CLEAR_MASK) {
mask_fill(x, y, width, height, 0.f);
} else if (operation == VG_FILL_MASK) {
mask_fill(x, y, width, height, 1.f);
} else if (vg_object_is_valid(mask, VG_OBJECT_IMAGE)) {
struct vg_image *image = handle_to_image(mask);
mask_using_image(image, operation, x, y, width, height);
} else if (vg_object_is_valid(mask, VG_OBJECT_MASK)) {
struct vg_mask_layer *layer = handle_to_masklayer(mask);
mask_using_layer(layer, operation, x, y, width, height);
} else {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
}
}
void vegaCopyMask(VGMaskLayer maskLayer,
VGint sx, VGint sy,
VGint dx, VGint dy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct vg_mask_layer *mask = 0;
if (maskLayer == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
vg_validate_state(ctx);
mask = handle_to_masklayer(maskLayer);
mask_copy(mask, sx, sy, dx, dy, width, height);
}
void vgCopyPixels(VGint dx, VGint dy,
VGint sx, VGint sy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct pipe_framebuffer_state *fb = &ctx->state.g3d.fb;
struct st_renderbuffer *strb = ctx->draw_buffer->strb;
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
/* do nothing if we copy from outside the fb */
if (dx >= (VGint)fb->width || dy >= (VGint)fb->height ||
sx >= (VGint)fb->width || sy >= (VGint)fb->height)
return;
vg_validate_state(ctx);
/* make sure rendering has completed */
vgFinish();
vg_copy_surface(ctx, strb->surface, dx, dy,
strb->surface, sx, sy, width, height);
}
void vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
{
struct pipe_surface *dest_surface = NULL;
struct pipe_context *pipe = ctx->pipe;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
vg_validate_state(ctx);
/* first finish all pending rendering */
vgFinish();
dest_surface = pipe->screen->get_tex_surface(pipe->screen,
stfb->blend_texture_view->texture,
0, 0, 0,
PIPE_BIND_RENDER_TARGET);
/* flip it, because we want to use it as a sampler */
util_blit_pixels_tex(ctx->blit,
stfb->alpha_mask_view,
0, strb->height,
strb->width, 0,
dest_surface,
0, 0,
strb->width, strb->height,
0.0, PIPE_TEX_MIPFILTER_NEAREST);
/* make sure it's complete */
vgFinish();
if (dest_surface)
pipe_surface_reference(&dest_surface, NULL);
}
static void
vg_context_update_surface_mask_view(struct vg_context *ctx,
uint width, uint height)
{
struct st_framebuffer *stfb = ctx->draw_buffer;
struct pipe_sampler_view *old_sampler_view = stfb->surface_mask_view;
struct pipe_context *pipe = ctx->pipe;
if (old_sampler_view &&
old_sampler_view->texture->width0 == width &&
old_sampler_view->texture->height0 == height)
return;
/*
we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
this texture and use it as a sampler, so while this wastes some
space it makes both of those a lot simpler
*/
stfb->surface_mask_view = create_tex_and_view(pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, width, height);
if (!stfb->surface_mask_view) {
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
return;
}
/* XXX could this call be avoided? */
vg_validate_state(ctx);
/* alpha mask starts with 1.f alpha */
mask_fill(0, 0, width, height, 1.f);
/* if we had an old surface copy it over */
if (old_sampler_view) {
struct pipe_box src_box;
u_box_origin_2d(MIN2(old_sampler_view->texture->width0,
stfb->surface_mask_view->texture->width0),
MIN2(old_sampler_view->texture->height0,
stfb->surface_mask_view->texture->height0),
&src_box);
pipe->resource_copy_region(pipe,
stfb->surface_mask_view->texture,
0, 0, 0, 0,
old_sampler_view->texture,
0, &src_box);
}
/* Free the old texture
*/
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
}
struct pipe_sampler_view *vg_prepare_blend_surface_from_mask(struct vg_context *ctx)
{
struct st_framebuffer *stfb = ctx->draw_buffer;
vg_validate_state(ctx);
vg_context_update_surface_mask_view(ctx, stfb->width, stfb->height);
vg_prepare_blend_texture(ctx, stfb->surface_mask_view);
return stfb->blend_texture_view;
}
static void
setup_new_alpha_mask(struct vg_context *ctx, struct st_framebuffer *stfb)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_sampler_view *old_sampler_view = stfb->alpha_mask_view;
/*
we use PIPE_FORMAT_B8G8R8A8_UNORM because we want to render to
this texture and use it as a sampler, so while this wastes some
space it makes both of those a lot simpler
*/
stfb->alpha_mask_view = create_tex_and_view(pipe,
PIPE_FORMAT_B8G8R8A8_UNORM, stfb->width, stfb->height);
if (!stfb->alpha_mask_view) {
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
return;
}
/* XXX could this call be avoided? */
vg_validate_state(ctx);
/* alpha mask starts with 1.f alpha */
mask_fill(0, 0, stfb->width, stfb->height, 1.f);
/* if we had an old surface copy it over */
if (old_sampler_view) {
struct pipe_subresource subsurf, subold_surf;
subsurf.face = 0;
subsurf.level = 0;
subold_surf.face = 0;
subold_surf.level = 0;
pipe->resource_copy_region(pipe,
stfb->alpha_mask_view->texture,
subsurf,
0, 0, 0,
old_sampler_view->texture,
subold_surf,
0, 0, 0,
MIN2(old_sampler_view->texture->width0,
stfb->alpha_mask_view->texture->width0),
MIN2(old_sampler_view->texture->height0,
stfb->alpha_mask_view->texture->height0));
}
/* Free the old texture
*/
if (old_sampler_view)
pipe_sampler_view_reference(&old_sampler_view, NULL);
}
void vgDrawImage(VGImage image)
{
struct vg_context *ctx = vg_current_context();
if (!ctx)
return;
if (image == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
vg_validate_state(ctx);
image_draw((struct vg_image*)image);
}
void vegaDrawImage(VGImage image)
{
struct vg_context *ctx = vg_current_context();
if (!ctx)
return;
if (image == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
vg_validate_state(ctx);
image_draw(handle_to_image(image),
&ctx->state.vg.image_user_to_surface_matrix);
}
void vegaFillMaskLayer(VGMaskLayer maskLayer,
VGint x, VGint y,
VGint width, VGint height,
VGfloat value)
{
struct vg_mask_layer *mask = 0;
struct vg_context *ctx = vg_current_context();
if (maskLayer == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (value < 0 || value > 1) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (x < 0 || y < 0 || (x + width) < 0 || (y + height) < 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
mask = handle_to_masklayer(maskLayer);
if (x + width > mask_layer_width(mask) ||
y + height > mask_layer_height(mask)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
mask_layer_fill(mask, x, y, width, height, value);
}
void vgSetPixels(VGint dx, VGint dy,
VGImage src, VGint sx, VGint sy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
vg_validate_state(ctx);
if (src == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
image_set_pixels(dx, dy, (struct vg_image*)src, sx, sy, width,
height);
}
struct pipe_sampler_view *vg_prepare_blend_surface(struct vg_context *ctx)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_sampler_view *view;
struct pipe_sampler_view view_templ;
struct st_framebuffer *stfb = ctx->draw_buffer;
struct st_renderbuffer *strb = stfb->strb;
vg_validate_state(ctx);
u_sampler_view_default_template(&view_templ, strb->texture, strb->texture->format);
view = pipe->create_sampler_view(pipe, strb->texture, &view_templ);
vg_prepare_blend_texture(ctx, view);
pipe_sampler_view_reference(&view, NULL);
return stfb->blend_texture_view;
}
void vgCopyImage(VGImage dst, VGint dx, VGint dy,
VGImage src, VGint sx, VGint sy,
VGint width, VGint height,
VGboolean dither)
{
struct vg_context *ctx = vg_current_context();
if (src == VG_INVALID_HANDLE || dst == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
image_copy((struct vg_image*)dst, dx, dy,
(struct vg_image*)src, sx, sy,
width, height, dither);
}
void vgWritePixels(const void * data, VGint dataStride,
VGImageFormat dataFormat,
VGint dx, VGint dy,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct pipe_context *pipe = ctx->pipe;
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;
}
vg_validate_state(ctx);
{
struct vg_image *img = image_create(dataFormat, width, height);
image_sub_data(img, data, dataStride, dataFormat, 0, 0,
width, height);
#if 0
struct matrix *matrix = &ctx->state.vg.image_user_to_surface_matrix;
matrix_translate(matrix, dx, dy);
image_draw(img);
matrix_translate(matrix, -dx, -dy);
#else
/* this looks like a better approach */
image_set_pixels(dx, dy, img, 0, 0, width, height);
#endif
image_destroy(img);
}
/* make sure rendering has completed */
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
}
void vegaClear(VGint x, VGint y,
VGint width, VGint height)
{
struct vg_context *ctx = vg_current_context();
struct st_framebuffer *stfb = ctx->draw_buffer;
if (width <= 0 || height <= 0) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
#if 0
debug_printf("Clear [%d, %d, %d, %d] with [%f, %f, %f, %f]\n",
x, y, width, height,
ctx->state.vg.clear_color[0],
ctx->state.vg.clear_color[1],
ctx->state.vg.clear_color[2],
ctx->state.vg.clear_color[3]);
#endif
/* check for a whole surface clear */
if (!ctx->state.vg.scissoring &&
(x == 0 && y == 0 && width == stfb->width && height == stfb->height)) {
union pipe_color_union clear_color;
clear_color.f[0] = ctx->state.vg.clear_color[0];
clear_color.f[1] = ctx->state.vg.clear_color[1];
clear_color.f[2] = ctx->state.vg.clear_color[2];
clear_color.f[3] = ctx->state.vg.clear_color[3];
ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_COLOR | PIPE_CLEAR_DEPTHSTENCIL,
&clear_color, 1., 0);
} else if (renderer_clear_begin(ctx->renderer)) {
/* XXX verify coord round-off */
renderer_clear(ctx->renderer, x, y, width, height, ctx->state.vg.clear_color);
renderer_clear_end(ctx->renderer);
}
}
void vegaConvolve(VGImage dst, VGImage src,
VGint kernelWidth, VGint kernelHeight,
VGint shiftX, VGint shiftY,
const VGshort * kernel,
VGfloat scale,
VGfloat bias,
VGTilingMode tilingMode)
{
struct vg_context *ctx = vg_current_context();
VGfloat *buffer;
VGint buffer_len;
VGint i, j;
VGint idx = 0;
struct vg_image *d, *s;
VGint kernel_size = kernelWidth * kernelHeight;
struct filter_info info;
const VGint max_kernel_size = vegaGeti(VG_MAX_KERNEL_SIZE);
if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (kernelWidth <= 0 || kernelHeight <= 0 ||
kernelWidth > max_kernel_size || kernelHeight > max_kernel_size) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (!kernel || !is_aligned_to(kernel, 2)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (tilingMode < VG_TILE_FILL ||
tilingMode > VG_TILE_REFLECT) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
d = handle_to_image(dst);
s = handle_to_image(src);
if (vg_image_overlaps(d, s)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
buffer_len = 8 + 2 * 4 * kernel_size;
buffer = malloc(buffer_len * sizeof(VGfloat));
buffer[0] = 0.f;
buffer[1] = 1.f;
buffer[2] = 2.f; /*unused*/
buffer[3] = 4.f; /*unused*/
buffer[4] = kernelWidth * kernelHeight;
buffer[5] = scale;
buffer[6] = bias;
buffer[7] = 0.f;
idx = 8;
for (j = 0; j < kernelHeight; ++j) {
for (i = 0; i < kernelWidth; ++i) {
VGint index = j * kernelWidth + i;
VGfloat x, y;
x = texture_offset(s->width, kernelWidth, i, shiftX);
y = texture_offset(s->height, kernelHeight, j, shiftY);
buffer[idx + index*4 + 0] = x;
buffer[idx + index*4 + 1] = y;
buffer[idx + index*4 + 2] = 0.f;
buffer[idx + index*4 + 3] = 0.f;
}
}
idx += kernel_size * 4;
for (j = 0; j < kernelHeight; ++j) {
for (i = 0; i < kernelWidth; ++i) {
/* transpose the kernel */
VGint index = j * kernelWidth + i;
VGint kindex = (kernelWidth - i - 1) * kernelHeight + (kernelHeight - j - 1);
buffer[idx + index*4 + 0] = kernel[kindex];
buffer[idx + index*4 + 1] = kernel[kindex];
buffer[idx + index*4 + 2] = kernel[kindex];
buffer[idx + index*4 + 3] = kernel[kindex];
}
}
info.dst = d;
info.src = s;
info.setup_shader = &setup_convolution;
info.user_data = (void*)(long)(buffer_len/4);
info.const_buffer = buffer;
info.const_buffer_len = buffer_len * sizeof(VGfloat);
info.tiling_mode = tilingMode;
info.extra_texture_view = NULL;
execute_filter(ctx, &info);
free(buffer);
}
void vegaLookupSingle(VGImage dst, VGImage src,
const VGuint * lookupTable,
VGImageChannel sourceChannel,
VGboolean outputLinear,
VGboolean outputPremultiplied)
{
struct vg_context *ctx = vg_current_context();
struct vg_image *d, *s;
struct pipe_sampler_view *lut_texture_view;
VGfloat buffer[4];
struct filter_info info;
VGuint color_data[256];
VGint i;
if (dst == VG_INVALID_HANDLE || src == VG_INVALID_HANDLE) {
vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
return;
}
if (!lookupTable || !is_aligned(lookupTable)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
if (sourceChannel != VG_RED && sourceChannel != VG_GREEN &&
sourceChannel != VG_BLUE && sourceChannel != VG_ALPHA) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
d = handle_to_image(dst);
s = handle_to_image(src);
if (vg_image_overlaps(d, s)) {
vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
return;
}
vg_validate_state(ctx);
for (i = 0; i < 256; ++i) {
VGuint rgba = lookupTable[i];
VGubyte blue, green, red, alpha;
red = (rgba & 0xff000000)>>24;
green = (rgba & 0x00ff0000)>>16;
blue = (rgba & 0x0000ff00)>> 8;
alpha = (rgba & 0x000000ff)>> 0;
color_data[i] = blue << 24 | green << 16 |
red << 8 | alpha;
}
lut_texture_view = create_texture_1d_view(ctx, color_data, 256);
buffer[0] = 0.f;
buffer[1] = 0.f;
buffer[2] = 1.f;
buffer[3] = 1.f;
info.dst = d;
info.src = s;
info.setup_shader = &setup_lookup_single;
info.user_data = (void*)sourceChannel;
info.const_buffer = buffer;
info.const_buffer_len = 4 * sizeof(VGfloat);
info.tiling_mode = VG_TILE_PAD;
info.extra_texture_view = lut_texture_view;
execute_filter(ctx, &info);
pipe_sampler_view_reference(&lut_texture_view, NULL);
}
static void setup_new_alpha_mask(struct vg_context *ctx,
struct st_framebuffer *stfb,
uint width, uint height)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_texture *old_texture = stfb->alpha_mask;
/*
we use PIPE_FORMAT_A8R8G8B8_UNORM because we want to render to
this texture and use it as a sampler, so while this wastes some
space it makes both of those a lot simpler
*/
stfb->alpha_mask =
create_texture(pipe, PIPE_FORMAT_A8R8G8B8_UNORM, width, height);
if (!stfb->alpha_mask) {
if (old_texture)
pipe_texture_reference(&old_texture, NULL);
return;
}
vg_validate_state(ctx);
/* alpha mask starts with 1.f alpha */
mask_fill(0, 0, width, height, 1.f);
/* if we had an old surface copy it over */
if (old_texture) {
struct pipe_surface *surface = pipe->screen->get_tex_surface(
pipe->screen,
stfb->alpha_mask,
0, 0, 0,
PIPE_BUFFER_USAGE_GPU_WRITE);
struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
pipe->screen,
old_texture,
0, 0, 0,
PIPE_BUFFER_USAGE_GPU_READ);
if (pipe->surface_copy) {
pipe->surface_copy(pipe,
surface,
0, 0,
old_surface,
0, 0,
MIN2(old_surface->width, width),
MIN2(old_surface->height, height));
} else {
util_surface_copy(pipe, FALSE,
surface,
0, 0,
old_surface,
0, 0,
MIN2(old_surface->width, width),
MIN2(old_surface->height, height));
}
if (surface)
pipe_surface_reference(&surface, NULL);
if (old_surface)
pipe_surface_reference(&old_surface, NULL);
}
/* Free the old texture
*/
if (old_texture)
pipe_texture_reference(&old_texture, NULL);
}