static void
dri_copy_sub_buffer(__DRIdrawable *dPriv, int x, int y,
int w, int h)
{
__DRIscreen *sPriv = dPriv->driScreenPriv;
void *data;
int iy;
struct dri_drawable *drawable = dri_drawable(dPriv);
struct gl_framebuffer *fb;
struct dri_swrast_renderbuffer *frontrb, *backrb;
TRACE;
fb = &drawable->Base;
frontrb =
dri_swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
backrb =
dri_swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
/* check for signle-buffered */
if (backrb == NULL)
return;
iy = frontrb->Base.Base.Height - y - h;
data = (char *)backrb->Base.Buffer + (iy * backrb->pitch) + (x * ((backrb->bpp + 7) / 8));
sPriv->swrast_loader->putImage2(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
x, iy, w, h,
frontrb->pitch,
data,
dPriv->loaderPrivate);
}
static void
swrast_delete_renderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
TRACE;
free(xrb->Base.Buffer);
_mesa_delete_renderbuffer(ctx, rb);
}
static void
swrast_delete_renderbuffer(struct gl_renderbuffer *rb)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
TRACE;
free(xrb->Base.Buffer);
free(xrb);
}
static void
dri_swap_buffers(__DRIdrawable * dPriv)
{
__DRIscreen *sPriv = dPriv->driScreenPriv;
GET_CURRENT_CONTEXT(ctx);
struct dri_drawable *drawable = dri_drawable(dPriv);
struct gl_framebuffer *fb;
struct dri_swrast_renderbuffer *frontrb, *backrb;
TRACE;
fb = &drawable->Base;
frontrb =
dri_swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
backrb =
dri_swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
/* check for signle-buffered */
if (backrb == NULL)
return;
/* check if swapping currently bound buffer */
if (ctx && ctx->DrawBuffer == fb) {
/* flush pending rendering */
_mesa_notifySwapBuffers(ctx);
}
sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
0, 0,
frontrb->Base.Base.Width,
frontrb->Base.Base.Height,
(char *) backrb->Base.Buffer,
dPriv->loaderPrivate);
}
static void
swrast_map_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **out_map,
GLint *out_stride)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
GLubyte *map = xrb->Base.Buffer;
int cpp = _mesa_get_format_bytes(rb->Format);
int stride = rb->Width * cpp;
if (rb->AllocStorage == swrast_alloc_front_storage) {
__DRIdrawable *dPriv = xrb->dPriv;
__DRIscreen *sPriv = dPriv->driScreenPriv;
xrb->map_mode = mode;
xrb->map_x = x;
xrb->map_y = y;
xrb->map_w = w;
xrb->map_h = h;
stride = w * cpp;
xrb->Base.Buffer = malloc(h * stride);
sPriv->swrast_loader->getImage(dPriv, x, rb->Height - y - h, w, h,
(char *) xrb->Base.Buffer,
dPriv->loaderPrivate);
*out_map = xrb->Base.Buffer + (h - 1) * stride;
*out_stride = -stride;
return;
}
assert(xrb->Base.Buffer);
if (rb->AllocStorage == swrast_alloc_back_storage) {
map += (rb->Height - 1) * stride;
stride = -stride;
}
map += (GLsizei)y * stride;
map += (GLsizei)x * cpp;
*out_map = map;
*out_stride = stride;
}
static GLboolean
swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLenum internalFormat, GLuint width, GLuint height)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
TRACE;
free(xrb->Base.Buffer);
swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);
xrb->Base.Buffer = malloc(height * xrb->pitch);
return GL_TRUE;
}
static GLboolean
swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLenum internalFormat, GLuint width, GLuint height)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
TRACE;
(void) ctx;
(void) internalFormat;
xrb->Base.Buffer = NULL;
rb->Width = width;
rb->Height = height;
xrb->pitch = bytes_per_line(width * xrb->bpp, 32);
return GL_TRUE;
}
static void
swrast_unmap_renderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb)
{
struct dri_swrast_renderbuffer *xrb = dri_swrast_renderbuffer(rb);
if (rb->AllocStorage == swrast_alloc_front_storage) {
__DRIdrawable *dPriv = xrb->dPriv;
__DRIscreen *sPriv = dPriv->driScreenPriv;
if (xrb->map_mode & GL_MAP_WRITE_BIT) {
sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_DRAW,
xrb->map_x, xrb->map_y,
xrb->map_w, xrb->map_h,
(char *) xrb->Base.Buffer,
dPriv->loaderPrivate);
}
free(xrb->Base.Buffer);
xrb->Base.Buffer = NULL;
}
}
