/*
* Mesa 3-D graphics library
* Version: 7.9
*
* Copyright (C) 2010 LunarG Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*/
#include "main/mtypes.h"
#include "main/context.h"
#include "main/mfeatures.h"
#include "main/texobj.h"
#include "main/teximage.h"
#include "main/texstate.h"
#include "main/framebuffer.h"
#include "main/fbobject.h"
#include "main/renderbuffer.h"
#include "main/version.h"
#include "st_texture.h"
#include "st_context.h"
#include "st_format.h"
#include "st_cb_fbo.h"
#include "st_cb_flush.h"
#include "st_manager.h"
#include "state_tracker/st_gl_api.h"
#include "pipe/p_context.h"
#include "pipe/p_screen.h"
#include "util/u_format.h"
#include "util/u_pointer.h"
#include "util/u_inlines.h"
#include "util/u_atomic.h"
#include "util/u_surface.h"
/**
* Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
* Return NULL if the struct gl_framebuffer is a user-created framebuffer.
* We'll only return non-null for window system framebuffers.
* Note that this function may fail.
*/
static INLINE struct st_framebuffer *
st_ws_framebuffer(struct gl_framebuffer *fb)
{
/* FBO cannot be casted. See st_new_framebuffer */
if (fb && _mesa_is_winsys_fbo(fb))
return (struct st_framebuffer *) fb;
return NULL;
}
/**
* Map an attachment to a buffer index.
*/
static INLINE gl_buffer_index
attachment_to_buffer_index(enum st_attachment_type statt)
{
gl_buffer_index index;
switch (statt) {
case ST_ATTACHMENT_FRONT_LEFT:
index = BUFFER_FRONT_LEFT;
break;
case ST_ATTACHMENT_BACK_LEFT:
index = BUFFER_BACK_LEFT;
break;
case ST_ATTACHMENT_FRONT_RIGHT:
index = BUFFER_FRONT_RIGHT;
break;
case ST_ATTACHMENT_BACK_RIGHT:
index = BUFFER_BACK_RIGHT;
break;
case ST_ATTACHMENT_DEPTH_STENCIL:
index = BUFFER_DEPTH;
break;
case ST_ATTACHMENT_ACCUM:
index = BUFFER_ACCUM;
break;
case ST_ATTACHMENT_SAMPLE:
default:
index = BUFFER_COUNT;
break;
}
return index;
}
/**
* Map a buffer index to an attachment.
*/
static INLINE enum st_attachment_type
buffer_index_to_attachment(gl_buffer_index index)
{
enum st_attachment_type statt;
switch (index) {
case BUFFER_FRONT_LEFT:
statt = ST_ATTACHMENT_FRONT_LEFT;
break;
case BUFFER_BACK_LEFT:
statt = ST_ATTACHMENT_BACK_LEFT;
break;
case BUFFER_FRONT_RIGHT:
statt = ST_ATTACHMENT_FRONT_RIGHT;
break;
case BUFFER_BACK_RIGHT:
statt = ST_ATTACHMENT_BACK_RIGHT;
break;
case BUFFER_DEPTH:
statt = ST_ATTACHMENT_DEPTH_STENCIL;
break;
case BUFFER_ACCUM:
statt = ST_ATTACHMENT_ACCUM;
break;
default:
statt = ST_ATTACHMENT_INVALID;
break;
}
return statt;
}
/**
* Make sure a context picks up the latest cached state of the
* drawables it binds to.
*/
static void
st_context_validate(struct st_context *st,
struct st_framebuffer *stdraw,
struct st_framebuffer *stread)
{
if (stdraw && stdraw->stamp != st->draw_stamp) {
st->dirty.st |= ST_NEW_FRAMEBUFFER;
_mesa_resize_framebuffer(st->ctx, &stdraw->Base,
stdraw->Base.Width,
stdraw->Base.Height);
st->draw_stamp = stdraw->stamp;
}
if (stread && stread->stamp != st->read_stamp) {
if (stread != stdraw) {
st->dirty.st |= ST_NEW_FRAMEBUFFER;
_mesa_resize_framebuffer(st->ctx, &stread->Base,
stread->Base.Width,
stread->Base.Height);
}
st->read_stamp = stread->stamp;
}
}
/**
* Validate a framebuffer to make sure up-to-date pipe_textures are used.
* The context we need to pass in is s dummy context needed only to be
* able to get a pipe context to create pipe surfaces, and to have a
* context to call _mesa_resize_framebuffer():
* (That should probably be rethought, since those surfaces become
* drawable state, not context state, and can be freed by another pipe
* context).
*/
static void
st_framebuffer_validate(struct st_framebuffer *stfb,
struct st_context *st)
{
struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
uint width, height;
unsigned i;
boolean changed = FALSE;
int32_t new_stamp = p_atomic_read(&stfb->iface->stamp);
if (stfb->iface_stamp == new_stamp)
return;
/* validate the fb */
do {
if (!stfb->iface->validate(stfb->iface, stfb->statts,
stfb->num_statts, textures))
return;
stfb->iface_stamp = new_stamp;
new_stamp = p_atomic_read(&stfb->iface->stamp);
} while(stfb->iface_stamp != new_stamp);
width = stfb->Base.Width;
height = stfb->Base.Height;
for (i = 0; i < stfb->num_statts; i++) {
struct st_renderbuffer *strb;
struct pipe_surface *ps, surf_tmpl;
gl_buffer_index idx;
if (!textures[i])
continue;
idx = attachment_to_buffer_index(stfb->statts[i]);
if (idx >= BUFFER_COUNT) {
pipe_resource_reference(&textures[i], NULL);
continue;
}
strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer);
assert(strb);
if (strb->texture == textures[i]) {
pipe_resource_reference(&textures[i], NULL);
continue;
}
u_surface_default_template(&surf_tmpl, textures[i],
PIPE_BIND_RENDER_TARGET);
ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl);
if (ps) {
pipe_surface_reference(&strb->surface, ps);
pipe_resource_reference(&strb->texture, ps->texture);
/* ownership transfered */
pipe_surface_reference(&ps, NULL);
changed = TRUE;
strb->Base.Width = strb->surface->width;
strb->Base.Height = strb->surface->height;
width = strb->Base.Width;
height = strb->Base.Height;
}
pipe_resource_reference(&textures[i], NULL);
}
if (changed) {
++stfb->stamp;
_mesa_resize_framebuffer(st->ctx, &stfb->Base, width, height);
}
}
/**
* Update the attachments to validate by looping the existing renderbuffers.
*/
static void
st_framebuffer_update_attachments(struct st_framebuffer *stfb)
{
gl_buffer_index idx;
stfb->num_statts = 0;
for (idx = 0; idx < BUFFER_COUNT; idx++) {
struct st_renderbuffer *strb;
enum st_attachment_type statt;
strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer);
if (!strb || strb->software)
continue;
statt = buffer_index_to_attachment(idx);
if (statt != ST_ATTACHMENT_INVALID &&
st_visual_have_buffers(stfb->iface->visual, 1 << statt))
stfb->statts[stfb->num_statts++] = statt;
}
stfb->stamp++;
}
/**
* Add a renderbuffer to the framebuffer.
*/
static boolean
st_framebuffer_add_renderbuffer(struct st_framebuffer *stfb,
gl_buffer_index idx)
{
struct gl_renderbuffer *rb;
enum pipe_format format;
int samples;
boolean sw;
if (!stfb->iface)
return FALSE;
/* do not distinguish depth/stencil buffers */
if (idx == BUFFER_STENCIL)
idx = BUFFER_DEPTH;
switch (idx) {
case BUFFER_DEPTH:
format = stfb->iface->visual->depth_stencil_format;
sw = FALSE;
break;
case BUFFER_ACCUM:
format = stfb->iface->visual->accum_format;
sw = TRUE;
break;
default:
format = stfb->iface->visual->color_format;
sw = FALSE;
break;
}
if (format == PIPE_FORMAT_NONE)
return FALSE;
samples = stfb->iface->visual->samples;
if (!samples)
samples = st_get_msaa();
rb = st_new_renderbuffer_fb(format, samples, sw);
if (!rb)
return FALSE;
if (idx != BUFFER_DEPTH) {
_mesa_add_renderbuffer(&stfb->Base, idx, rb);
}
else {
if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0))
_mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, rb);
if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1))
_mesa_add_renderbuffer(&stfb->Base, BUFFER_STENCIL, rb);
}
return TRUE;
}
/**
* Intialize a struct gl_config from a visual.
*/
static void
st_visual_to_context_mode(const struct st_visual *visual,
struct gl_config *mode)
{
memset(mode, 0, sizeof(*mode));
if (st_visual_have_buffers(visual, ST_ATTACHMENT_BACK_LEFT_MASK))
mode->doubleBufferMode = GL_TRUE;
if (st_visual_have_buffers(visual,
ST_ATTACHMENT_FRONT_RIGHT_MASK | ST_ATTACHMENT_BACK_RIGHT_MASK))
mode->stereoMode = GL_TRUE;
if (visual->color_format != PIPE_FORMAT_NONE) {
mode->rgbMode = GL_TRUE;
mode->redBits =
util_format_get_component_bits(visual->color_format,
UTIL_FORMAT_COLORSPACE_RGB, 0);
mode->greenBits =
util_format_get_component_bits(visual->color_format,
UTIL_FORMAT_COLORSPACE_RGB, 1);
mode->blueBits =
util_format_get_component_bits(visual->color_format,
UTIL_FORMAT_COLORSPACE_RGB, 2);
mode->alphaBits =
util_format_get_component_bits(visual->color_format,
UTIL_FORMAT_COLORSPACE_RGB, 3);
mode->rgbBits = mode->redBits +
mode->greenBits + mode->blueBits + mode->alphaBits;
}
if (visual->depth_stencil_format != PIPE_FORMAT_NONE) {
mode->depthBits =
util_format_get_component_bits(visual->depth_stencil_format,
UTIL_FORMAT_COLORSPACE_ZS, 0);
mode->stencilBits =
util_format_get_component_bits(visual->depth_stencil_format,
UTIL_FORMAT_COLORSPACE_ZS, 1);
mode->haveDepthBuffer = mode->depthBits > 0;
mode->haveStencilBuffer = mode->stencilBits > 0;
}
if (visual->accum_format != PIPE_FORMAT_NONE) {
mode->haveAccumBuffer = GL_TRUE;
mode->accumRedBits =
util_format_get_component_bits(visual->accum_format,
UTIL_FORMAT_COLORSPACE_RGB, 0);
mode->accumGreenBits =
util_format_get_component_bits(visual->accum_format,
UTIL_FORMAT_COLORSPACE_RGB, 1);
mode->accumBlueBits =
util_format_get_component_bits(visual->accum_format,
UTIL_FORMAT_COLORSPACE_RGB, 2);
mode->accumAlphaBits =
util_format_get_component_bits(visual->accum_format,
UTIL_FORMAT_COLORSPACE_RGB, 3);
}
if (visual->samples) {
mode->sampleBuffers = 1;
mode->samples = visual->samples;
}
}
/**
* 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);
stfb->Base.Initialized = GL_TRUE;
return stfb;
}
/**
* Reference a framebuffer.
*/
static void
st_framebuffer_reference(struct st_framebuffer **ptr,
struct st_framebuffer *stfb)
{
struct gl_framebuffer *fb = &stfb->Base;
_mesa_reference_framebuffer((struct gl_framebuffer **) ptr, fb);
}
static void
st_context_flush(struct st_context_iface *stctxi, unsigned flags,
struct pipe_fence_handle **fence)
{
struct st_context *st = (struct st_context *) stctxi;
st_flush(st, fence);
if (flags & ST_FLUSH_FRONT)
st_manager_flush_frontbuffer(st);
}
static boolean
st_context_teximage(struct st_context_iface *stctxi,
enum st_texture_type tex_type,
int level, enum pipe_format internal_format,
struct pipe_resource *tex, boolean mipmap)
{
struct st_context *st = (struct st_context *) stctxi;
struct gl_context *ctx = st->ctx;
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct st_texture_object *stObj;
struct st_texture_image *stImage;
GLenum internalFormat;
GLuint width, height, depth;
GLenum target;
switch (tex_type) {
case ST_TEXTURE_1D:
target = GL_TEXTURE_1D;
break;
case ST_TEXTURE_2D:
target = GL_TEXTURE_2D;
break;
case ST_TEXTURE_3D:
target = GL_TEXTURE_3D;
break;
case ST_TEXTURE_RECT:
target = GL_TEXTURE_RECTANGLE_ARB;
break;
default:
return FALSE;
}
texObj = _mesa_select_tex_object(ctx, texUnit, target);
_mesa_lock_texture(ctx, texObj);
stObj = st_texture_object(texObj);
/* switch to surface based */
if (!stObj->surface_based) {
_mesa_clear_texture_object(ctx, texObj);
stObj->surface_based = GL_TRUE;
}
texImage = _mesa_get_tex_image(ctx, texObj, target, level);
stImage = st_texture_image(texImage);
if (tex) {
gl_format texFormat;
/*
* XXX When internal_format and tex->format differ, st_finalize_texture
* needs to allocate a new texture with internal_format and copy the
* texture here into the new one. It will result in surface_copy being
* called on surfaces whose formats differ.
*
* To avoid that, internal_format is (wrongly) ignored here. A sane fix
* is to use a sampler view.
*/
if (!st_sampler_compat_formats(tex->format, internal_format))
internal_format = tex->format;
if (util_format_get_component_bits(internal_format,
UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
internalFormat = GL_RGBA;
else
internalFormat = GL_RGB;
texFormat = st_ChooseTextureFormat(ctx, target, internalFormat,
GL_BGRA, GL_UNSIGNED_BYTE);
_mesa_init_teximage_fields(ctx, texImage,
tex->width0, tex->height0, 1, 0,
internalFormat, texFormat);
width = tex->width0;
height = tex->height0;
depth = tex->depth0;
/* grow the image size until we hit level = 0 */
while (level > 0) {
if (width != 1)
width <<= 1;
if (height != 1)
height <<= 1;
if (depth != 1)
depth <<= 1;
level--;
}
}
else {
_mesa_clear_texture_image(ctx, texImage);
width = height = depth = 0;
}
pipe_resource_reference(&stImage->pt, tex);
stObj->width0 = width;
stObj->height0 = height;
stObj->depth0 = depth;
_mesa_dirty_texobj(ctx, texObj, GL_TRUE);
_mesa_unlock_texture(ctx, texObj);
return TRUE;
}
static void
st_context_copy(struct st_context_iface *stctxi,
struct st_context_iface *stsrci, unsigned mask)
{
struct st_context *st = (struct st_context *) stctxi;
struct st_context *src = (struct st_context *) stsrci;
_mesa_copy_context(src->ctx, st->ctx, mask);
}
static boolean
st_context_share(struct st_context_iface *stctxi,
struct st_context_iface *stsrci)
{
struct st_context *st = (struct st_context *) stctxi;
struct st_context *src = (struct st_context *) stsrci;
return _mesa_share_state(st->ctx, src->ctx);
}
static void
st_context_destroy(struct st_context_iface *stctxi)
{
struct st_context *st = (struct st_context *) stctxi;
st_destroy_context(st);
}
static struct st_context_iface *
st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
const struct st_context_attribs *attribs,
enum st_context_error *error,
struct st_context_iface *shared_stctxi)
{
struct st_context *shared_ctx = (struct st_context *) shared_stctxi;
struct st_context *st;
struct pipe_context *pipe;
struct gl_config mode;
gl_api api;
if (!(stapi->profile_mask & (1 << attribs->profile)))
return NULL;
switch (attribs->profile) {
case ST_PROFILE_DEFAULT:
api = API_OPENGL;
break;
case ST_PROFILE_OPENGL_ES1:
api = API_OPENGLES;
break;
case ST_PROFILE_OPENGL_ES2:
api = API_OPENGLES2;
break;
case ST_PROFILE_OPENGL_CORE:
default:
*error = ST_CONTEXT_ERROR_BAD_API;
return NULL;
break;
}
pipe = smapi->screen->context_create(smapi->screen, NULL);
if (!pipe) {
*error = ST_CONTEXT_ERROR_NO_MEMORY;
return NULL;
}
st_visual_to_context_mode(&attribs->visual, &mode);
st = st_create_context(api, pipe, &mode, shared_ctx, &attribs->options);
if (!st) {
*error = ST_CONTEXT_ERROR_NO_MEMORY;
pipe->destroy(pipe);
return NULL;
}
/* need to perform version check */
if (attribs->major > 1 || attribs->minor > 0) {
_mesa_compute_version(st->ctx);
/* Is the actual version less than the requested version? Mesa can't
* yet enforce the added restrictions of a forward-looking context, so
* fail that too.
*/
if (st->ctx->Version < attribs->major * 10 + attribs->minor
|| (attribs->flags & ~ST_CONTEXT_FLAG_DEBUG) != 0) {
*error = ST_CONTEXT_ERROR_BAD_VERSION;
st_destroy_context(st);
return NULL;
}
}
st->invalidate_on_gl_viewport =
smapi->get_param(smapi, ST_MANAGER_BROKEN_INVALIDATE);
st->iface.destroy = st_context_destroy;
st->iface.flush = st_context_flush;
st->iface.teximage = st_context_teximage;
st->iface.copy = st_context_copy;
st->iface.share = st_context_share;
st->iface.st_context_private = (void *) smapi;
*error = ST_CONTEXT_SUCCESS;
return &st->iface;
}
static struct st_context_iface *
st_api_get_current(struct st_api *stapi)
{
GET_CURRENT_CONTEXT(ctx);
struct st_context *st = (ctx) ? ctx->st : NULL;
return (st) ? &st->iface : NULL;
}
static struct st_framebuffer *
st_framebuffer_reuse_or_create(struct gl_framebuffer *fb,
struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *cur = st_ws_framebuffer(fb), *stfb = NULL;
/* dummy framebuffers cant be used as st_framebuffer */
if (cur && &cur->Base != _mesa_get_incomplete_framebuffer() &&
cur->iface == stfbi) {
/* reuse the current stfb */
st_framebuffer_reference(&stfb, cur);
}
else {
/* create a new one */
stfb = st_framebuffer_create(stfbi);
}
return stfb;
}
static boolean
st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
struct st_framebuffer_iface *stdrawi,
struct st_framebuffer_iface *streadi)
{
struct st_context *st = (struct st_context *) stctxi;
struct st_framebuffer *stdraw, *stread;
boolean ret;
_glapi_check_multithread();
if (st) {
/* reuse or create the draw fb */
stdraw = st_framebuffer_reuse_or_create(st->ctx->WinSysDrawBuffer,
stdrawi);
if (streadi != stdrawi) {
/* do the same for the read fb */
stread = st_framebuffer_reuse_or_create(st->ctx->WinSysReadBuffer,
streadi);
}
else {
stread = NULL;
/* reuse the draw fb for the read fb */
if (stdraw)
st_framebuffer_reference(&stread, stdraw);
}
if (stdraw && stread) {
st_framebuffer_validate(stdraw, st);
if (stread != stdraw)
st_framebuffer_validate(stread, st);
ret = _mesa_make_current(st->ctx, &stdraw->Base, &stread->Base);
st->draw_stamp = stdraw->stamp - 1;
st->read_stamp = stread->stamp - 1;
st_context_validate(st, stdraw, stread);
}
else {
struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer();
ret = _mesa_make_current(st->ctx, incomplete, incomplete);
}
st_framebuffer_reference(&stdraw, NULL);
st_framebuffer_reference(&stread, NULL);
}
else {
ret = _mesa_make_current(NULL, NULL, NULL);
}
return ret;
}
static st_proc_t
st_api_get_proc_address(struct st_api *stapi, const char *procname)
{
return (st_proc_t) _glapi_get_proc_address(procname);
}
static void
st_api_destroy(struct st_api *stapi)
{
}
/**
* Flush the front buffer if the current context renders to the front buffer.
*/
void
st_manager_flush_frontbuffer(struct st_context *st)
{
struct st_framebuffer *stfb = st_ws_framebuffer(st->ctx->DrawBuffer);
struct st_renderbuffer *strb = NULL;
if (stfb)
strb = st_renderbuffer(stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
if (!strb)
return;
/* never a dummy fb */
assert(&stfb->Base != _mesa_get_incomplete_framebuffer());
stfb->iface->flush_front(stfb->iface, ST_ATTACHMENT_FRONT_LEFT);
}
/**
* Return the surface of an EGLImage.
* FIXME: I think this should operate on resources, not surfaces
*/
struct pipe_surface *
st_manager_get_egl_image_surface(struct st_context *st,
void *eglimg, unsigned usage)
{
struct st_manager *smapi =
(struct st_manager *) st->iface.st_context_private;
struct st_egl_image stimg;
struct pipe_surface *ps, surf_tmpl;
if (!smapi || !smapi->get_egl_image)
return NULL;
memset(&stimg, 0, sizeof(stimg));
if (!smapi->get_egl_image(smapi, eglimg, &stimg))
return NULL;
u_surface_default_template(&surf_tmpl, stimg.texture, usage);
surf_tmpl.u.tex.level = stimg.level;
surf_tmpl.u.tex.first_layer = stimg.layer;
surf_tmpl.u.tex.last_layer = stimg.layer;
ps = st->pipe->create_surface(st->pipe, stimg.texture, &surf_tmpl);
pipe_resource_reference(&stimg.texture, NULL);
return ps;
}
/**
* Re-validate the framebuffers.
*/
void
st_manager_validate_framebuffers(struct st_context *st)
{
struct st_framebuffer *stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
struct st_framebuffer *stread = st_ws_framebuffer(st->ctx->ReadBuffer);
if (stdraw)
st_framebuffer_validate(stdraw, st);
if (stread && stread != stdraw)
st_framebuffer_validate(stread, st);
st_context_validate(st, stdraw, stread);
}
/**
* 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;
}
static const struct st_api st_gl_api = {
"Mesa " MESA_VERSION_STRING,
ST_API_OPENGL,
#if FEATURE_GL
ST_PROFILE_DEFAULT_MASK |
#endif
#if FEATURE_ES1
ST_PROFILE_OPENGL_ES1_MASK |
#endif
#if FEATURE_ES2
ST_PROFILE_OPENGL_ES2_MASK |
#endif
0,
0,
st_api_destroy,
st_api_get_proc_address,
st_api_create_context,
st_api_make_current,
st_api_get_current,
};
struct st_api *
st_gl_api_create(void)
{
return (struct st_api *) &st_gl_api;
}