/**
* Create a framebuffer from a manager interface.
*/
static struct st_framebuffer *
st_framebuffer_create(struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *stfb;
struct gl_config mode;
gl_buffer_index idx;
if (!stfbi)
return NULL;
stfb = CALLOC_STRUCT(st_framebuffer);
if (!stfb)
return NULL;
st_visual_to_context_mode(stfbi->visual, &mode);
_mesa_initialize_window_framebuffer(&stfb->Base, &mode);
stfb->iface = stfbi;
stfb->iface_stamp = p_atomic_read(&stfbi->stamp) - 1;
/* add the color buffer */
idx = stfb->Base._ColorDrawBufferIndexes[0];
if (!st_framebuffer_add_renderbuffer(stfb, idx)) {
free(stfb);
return NULL;
}
st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH);
st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM);
stfb->stamp = 0;
st_framebuffer_update_attachments(stfb);
return stfb;
}
/**
* Add a color renderbuffer on demand.
*/
boolean
st_manager_add_color_renderbuffer(struct st_context *st,
struct gl_framebuffer *fb,
gl_buffer_index idx)
{
struct st_framebuffer *stfb = st_ws_framebuffer(fb);
/* FBO */
if (!stfb)
return FALSE;
if (stfb->Base.Attachment[idx].Renderbuffer)
return TRUE;
switch (idx) {
case BUFFER_FRONT_LEFT:
case BUFFER_BACK_LEFT:
case BUFFER_FRONT_RIGHT:
case BUFFER_BACK_RIGHT:
break;
default:
return FALSE;
break;
}
if (!st_framebuffer_add_renderbuffer(stfb, idx))
return FALSE;
st_framebuffer_update_attachments(stfb);
st_invalidate_state(st->ctx, _NEW_BUFFERS);
return TRUE;
}
/**
* Create a framebuffer from a manager interface.
*/
static struct st_framebuffer *
st_framebuffer_create(struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *stfb;
struct gl_config mode;
gl_buffer_index idx;
if (!stfbi)
return NULL;
stfb = CALLOC_STRUCT(st_framebuffer);
if (!stfb)
return NULL;
st_visual_to_context_mode(stfbi->visual, &mode);
_mesa_initialize_window_framebuffer(&stfb->Base, &mode);
/* modify the draw/read buffers of the fb */
st_visual_to_default_buffer(stfbi->visual, &stfb->Base.ColorDrawBuffer[0],
&stfb->Base._ColorDrawBufferIndexes[0]);
st_visual_to_default_buffer(stfbi->visual, &stfb->Base.ColorReadBuffer,
&stfb->Base._ColorReadBufferIndex);
stfb->iface = stfbi;
/* add the color buffer */
idx = stfb->Base._ColorDrawBufferIndexes[0];
if (!st_framebuffer_add_renderbuffer(stfb, idx)) {
FREE(stfb);
return NULL;
}
st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH);
st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM);
st_framebuffer_update_attachments(stfb);
stfb->Base.Initialized = GL_TRUE;
return stfb;
}
/**
* Add a color renderbuffer on demand.
*/
boolean
st_manager_add_color_renderbuffer(struct st_context *st,
struct gl_framebuffer *fb,
gl_buffer_index idx)
{
struct st_framebuffer *stfb = st_ws_framebuffer(fb);
/* FBO */
if (!stfb)
return FALSE;
if (stfb->Base.Attachment[idx].Renderbuffer)
return TRUE;
switch (idx) {
case BUFFER_FRONT_LEFT:
case BUFFER_BACK_LEFT:
case BUFFER_FRONT_RIGHT:
case BUFFER_BACK_RIGHT:
break;
default:
return FALSE;
break;
}
if (!st_framebuffer_add_renderbuffer(stfb, idx))
return FALSE;
st_framebuffer_update_attachments(stfb);
/*
* Force a call to the state tracker manager to validate the
* new renderbuffer. It might be that there is a window system
* renderbuffer available.
*/
if(stfb->iface)
stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1;
st_invalidate_state(st->ctx, _NEW_BUFFERS);
return TRUE;
}
/**
* Create a framebuffer from a manager interface.
*/
static struct st_framebuffer *
st_framebuffer_create(struct st_context *st,
struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *stfb;
struct gl_config mode;
gl_buffer_index idx;
if (!stfbi)
return NULL;
stfb = CALLOC_STRUCT(st_framebuffer);
if (!stfb)
return NULL;
st_visual_to_context_mode(stfbi->visual, &mode);
/*
* For desktop GL, sRGB framebuffer write is controlled by both the
* capability of the framebuffer and GL_FRAMEBUFFER_SRGB. We should
* advertise the capability when the pipe driver (and core Mesa) supports
* it so that applications can enable sRGB write when they want to.
*
* This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB. When
* the attribute is GLX_TRUE, it tells the st manager to pick a color
* format such that util_format_srgb(visual->color_format) can be supported
* by the pipe driver. We still need to advertise the capability here.
*
* For GLES, however, sRGB framebuffer write is controlled only by the
* capability of the framebuffer. There is GL_EXT_sRGB_write_control to
* give applications the control back, but sRGB write is still enabled by
* default. To avoid unexpected results, we should not advertise the
* capability. This could change when we add support for
* EGL_KHR_gl_colorspace.
*/
if (_mesa_is_desktop_gl(st->ctx)) {
struct pipe_screen *screen = st->pipe->screen;
const enum pipe_format srgb_format =
util_format_srgb(stfbi->visual->color_format);
if (srgb_format != PIPE_FORMAT_NONE &&
st_pipe_format_to_mesa_format(srgb_format) != MESA_FORMAT_NONE &&
screen->is_format_supported(screen, srgb_format,
PIPE_TEXTURE_2D, stfbi->visual->samples,
PIPE_BIND_RENDER_TARGET))
mode.sRGBCapable = GL_TRUE;
}
_mesa_initialize_window_framebuffer(&stfb->Base, &mode);
stfb->iface = stfbi;
stfb->iface_stamp = p_atomic_read(&stfbi->stamp) - 1;
/* add the color buffer */
idx = stfb->Base._ColorDrawBufferIndexes[0];
if (!st_framebuffer_add_renderbuffer(stfb, idx)) {
free(stfb);
return NULL;
}
st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH);
st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM);
stfb->stamp = 0;
st_framebuffer_update_attachments(stfb);
return stfb;
}