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cogl/gl-framebuffer: Split up into FBO and back drivers

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One is for when we're painting to the back buffer (onscreen), and the
other when we're painting to an FBO (offscreen).

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1514>
This commit is contained in:
Jonas Ådahl 2020-10-19 21:19:15 +02:00 committed by Robert Mader
parent a6b0376a6c
commit 60e1516b1c
24 changed files with 1165 additions and 743 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
cogl/cogl/cogl-driver.h
View File

@ -93,10 +93,6 @@ struct _CoglDriverVtable
float blue, float blue,
float alpha); float alpha);
void
(* framebuffer_query_bits) (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits);
void void
(* framebuffer_finish) (CoglFramebuffer *framebuffer); (* framebuffer_finish) (CoglFramebuffer *framebuffer);

7
cogl/cogl/cogl-framebuffer-driver.c
View File

@ -58,6 +58,13 @@ cogl_framebuffer_driver_get_framebuffer (CoglFramebufferDriver *driver)
return priv->framebuffer; return priv->framebuffer;
} }
void
cogl_framebuffer_driver_query_bits (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits)
{
COGL_FRAMEBUFFER_DRIVER_GET_CLASS (driver)->query_bits (driver, bits);
}
static void static void
cogl_framebuffer_driver_get_property (GObject *object, cogl_framebuffer_driver_get_property (GObject *object,
guint prop_id, guint prop_id,

9
cogl/cogl/cogl-framebuffer-driver.h
View File

@ -30,6 +30,8 @@
#include "cogl-framebuffer.h" #include "cogl-framebuffer.h"
typedef struct _CoglFramebufferBits CoglFramebufferBits;
#define COGL_TYPE_FRAMEBUFFER_DRIVER (cogl_framebuffer_driver_get_type ()) #define COGL_TYPE_FRAMEBUFFER_DRIVER (cogl_framebuffer_driver_get_type ())
G_DECLARE_DERIVABLE_TYPE (CoglFramebufferDriver, G_DECLARE_DERIVABLE_TYPE (CoglFramebufferDriver,
cogl_framebuffer_driver, cogl_framebuffer_driver,
@ -39,9 +41,16 @@ G_DECLARE_DERIVABLE_TYPE (CoglFramebufferDriver,
struct _CoglFramebufferDriverClass struct _CoglFramebufferDriverClass
{ {
GObjectClass parent_cleass; GObjectClass parent_cleass;
void (* query_bits) (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits);
}; };
CoglFramebuffer * CoglFramebuffer *
cogl_framebuffer_driver_get_framebuffer (CoglFramebufferDriver *driver); cogl_framebuffer_driver_get_framebuffer (CoglFramebufferDriver *driver);
void
cogl_framebuffer_driver_query_bits (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits);
#endif /* COGL_FRAMEBUFFER_DRIVER_H */ #endif /* COGL_FRAMEBUFFER_DRIVER_H */

10
cogl/cogl/cogl-framebuffer-private.h
View File

@ -40,8 +40,16 @@
#include "cogl-attribute-private.h" #include "cogl-attribute-private.h"
#include "cogl-clip-stack.h" #include "cogl-clip-stack.h"
typedef enum
{
COGL_FRAMEBUFFER_DRIVER_TYPE_FBO,
COGL_FRAMEBUFFER_DRIVER_TYPE_BACK,
} CoglFramebufferDriverType;
struct _CoglFramebufferDriverConfig struct _CoglFramebufferDriverConfig
{ {
CoglFramebufferDriverType type;
gboolean disable_depth_and_stencil; gboolean disable_depth_and_stencil;
}; };
@ -98,7 +106,7 @@ typedef enum
COGL_READ_PIXELS_NO_FLIP = 1L << 30 COGL_READ_PIXELS_NO_FLIP = 1L << 30
} CoglPrivateReadPixelsFlags; } CoglPrivateReadPixelsFlags;
typedef struct typedef struct _CoglFramebufferBits
{ {
int red; int red;
int blue; int blue;

42
cogl/cogl/cogl-framebuffer.c
View File

@ -1126,15 +1126,24 @@ cogl_context_flush_framebuffer_state (CoglContext *ctx,
state); state);
} }
int static void
cogl_framebuffer_get_red_bits (CoglFramebuffer *framebuffer) cogl_framebuffer_query_bits (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits)
{ {
CoglFramebufferPrivate *priv = CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer); cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
g_return_if_fail (priv->driver);
cogl_framebuffer_driver_query_bits (priv->driver, bits);
}
int
cogl_framebuffer_get_red_bits (CoglFramebuffer *framebuffer)
{
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.red; return bits.red;
} }
@ -1142,12 +1151,9 @@ cogl_framebuffer_get_red_bits (CoglFramebuffer *framebuffer)
int int
cogl_framebuffer_get_green_bits (CoglFramebuffer *framebuffer) cogl_framebuffer_get_green_bits (CoglFramebuffer *framebuffer)
{ {
CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.green; return bits.green;
} }
@ -1155,12 +1161,9 @@ cogl_framebuffer_get_green_bits (CoglFramebuffer *framebuffer)
int int
cogl_framebuffer_get_blue_bits (CoglFramebuffer *framebuffer) cogl_framebuffer_get_blue_bits (CoglFramebuffer *framebuffer)
{ {
CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.blue; return bits.blue;
} }
@ -1168,12 +1171,9 @@ cogl_framebuffer_get_blue_bits (CoglFramebuffer *framebuffer)
int int
cogl_framebuffer_get_alpha_bits (CoglFramebuffer *framebuffer) cogl_framebuffer_get_alpha_bits (CoglFramebuffer *framebuffer)
{ {
CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.alpha; return bits.alpha;
} }
@ -1181,12 +1181,9 @@ cogl_framebuffer_get_alpha_bits (CoglFramebuffer *framebuffer)
int int
cogl_framebuffer_get_depth_bits (CoglFramebuffer *framebuffer) cogl_framebuffer_get_depth_bits (CoglFramebuffer *framebuffer)
{ {
CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.depth; return bits.depth;
} }
@ -1194,12 +1191,9 @@ cogl_framebuffer_get_depth_bits (CoglFramebuffer *framebuffer)
int int
_cogl_framebuffer_get_stencil_bits (CoglFramebuffer *framebuffer) _cogl_framebuffer_get_stencil_bits (CoglFramebuffer *framebuffer)
{ {
CoglFramebufferPrivate *priv =
cogl_framebuffer_get_instance_private (framebuffer);
CoglContext *ctx = priv->context;
CoglFramebufferBits bits; CoglFramebufferBits bits;
ctx->driver_vtable->framebuffer_query_bits (framebuffer, &bits); cogl_framebuffer_query_bits (framebuffer, &bits);
return bits.stencil; return bits.stencil;
} }

1
cogl/cogl/cogl-offscreen.c
View File

@ -56,6 +56,7 @@ _cogl_offscreen_new_with_texture_full (CoglTexture *texture,
g_return_val_if_fail (cogl_is_texture (texture), NULL); g_return_val_if_fail (cogl_is_texture (texture), NULL);
driver_config = (CoglFramebufferDriverConfig) { driver_config = (CoglFramebufferDriverConfig) {
.type = COGL_FRAMEBUFFER_DRIVER_TYPE_FBO,
.disable_depth_and_stencil = .disable_depth_and_stencil =
!!(flags & COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL), !!(flags & COGL_OFFSCREEN_DISABLE_DEPTH_AND_STENCIL),
}; };

23
cogl/cogl/driver/gl/cogl-framebuffer-gl-private.h
View File

@ -34,20 +34,22 @@
#ifndef __COGL_FRAMEBUFFER_GL_PRIVATE_H__ #ifndef __COGL_FRAMEBUFFER_GL_PRIVATE_H__
#define __COGL_FRAMEBUFFER_GL_PRIVATE_H__ #define __COGL_FRAMEBUFFER_GL_PRIVATE_H__
#include "cogl-attribute-private.h"
#include "cogl-framebuffer-driver.h" #include "cogl-framebuffer-driver.h"
#include "cogl-gl-header.h"
#define COGL_TYPE_GL_FRAMEBUFFER (cogl_gl_framebuffer_get_type ()) #define COGL_TYPE_GL_FRAMEBUFFER (cogl_gl_framebuffer_get_type ())
G_DECLARE_FINAL_TYPE (CoglGlFramebuffer, cogl_gl_framebuffer, G_DECLARE_DERIVABLE_TYPE (CoglGlFramebuffer, cogl_gl_framebuffer,
COGL, GL_FRAMEBUFFER, COGL, GL_FRAMEBUFFER,
CoglFramebufferDriver) CoglFramebufferDriver)
gboolean struct _CoglGlFramebufferClass
_cogl_offscreen_gl_allocate (CoglOffscreen *offscreen, {
CoglOffscreenFlags flags, CoglFramebufferDriverClass parent_class;
GError **error);
void void (* bind) (CoglGlFramebuffer *gl_framebuffer,
_cogl_offscreen_gl_free (CoglOffscreen *offscreen); GLenum target);
};
void void
_cogl_framebuffer_gl_clear (CoglFramebuffer *framebuffer, _cogl_framebuffer_gl_clear (CoglFramebuffer *framebuffer,
@ -57,10 +59,6 @@ _cogl_framebuffer_gl_clear (CoglFramebuffer *framebuffer,
float blue, float blue,
float alpha); float alpha);
void
_cogl_framebuffer_gl_query_bits (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits);
void void
_cogl_framebuffer_gl_finish (CoglFramebuffer *framebuffer); _cogl_framebuffer_gl_finish (CoglFramebuffer *framebuffer);
@ -72,7 +70,8 @@ _cogl_framebuffer_gl_discard_buffers (CoglFramebuffer *framebuffer,
unsigned long buffers); unsigned long buffers);
void void
_cogl_framebuffer_gl_bind (CoglFramebuffer *framebuffer, GLenum target); cogl_gl_framebuffer_bind (CoglGlFramebuffer *gl_framebuffer,
GLenum target);
void void
_cogl_framebuffer_gl_draw_attributes (CoglFramebuffer *framebuffer, _cogl_framebuffer_gl_draw_attributes (CoglFramebuffer *framebuffer,

685
cogl/cogl/driver/gl/cogl-framebuffer-gl.c
View File

@ -40,115 +40,11 @@
#include "driver/gl/cogl-framebuffer-gl-private.h" #include "driver/gl/cogl-framebuffer-gl-private.h"
#include "driver/gl/cogl-bitmap-gl-private.h" #include "driver/gl/cogl-bitmap-gl-private.h"
#include "driver/gl/cogl-buffer-gl-private.h" #include "driver/gl/cogl-buffer-gl-private.h"
#include "driver/gl/cogl-texture-gl-private.h"
#include <glib.h> #include <glib.h>
#include <string.h> #include <string.h>
#ifndef GL_FRAMEBUFFER G_DEFINE_ABSTRACT_TYPE (CoglGlFramebuffer, cogl_gl_framebuffer,
#define GL_FRAMEBUFFER 0x8D40
#endif
#ifndef GL_RENDERBUFFER
#define GL_RENDERBUFFER 0x8D41
#endif
#ifndef GL_STENCIL_ATTACHMENT
#define GL_STENCIL_ATTACHMENT 0x8D00
#endif
#ifndef GL_COLOR_ATTACHMENT0
#define GL_COLOR_ATTACHMENT0 0x8CE0
#endif
#ifndef GL_FRAMEBUFFER_COMPLETE
#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
#endif
#ifndef GL_STENCIL_INDEX8
#define GL_STENCIL_INDEX8 0x8D48
#endif
#ifndef GL_DEPTH_STENCIL
#define GL_DEPTH_STENCIL 0x84F9
#endif
#ifndef GL_DEPTH24_STENCIL8
#define GL_DEPTH24_STENCIL8 0x88F0
#endif
#ifndef GL_DEPTH_ATTACHMENT
#define GL_DEPTH_ATTACHMENT 0x8D00
#endif
#ifndef GL_DEPTH_STENCIL_ATTACHMENT
#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A
#endif
#ifndef GL_DEPTH_COMPONENT16
#define GL_DEPTH_COMPONENT16 0x81A5
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217
#endif
#ifndef GL_READ_FRAMEBUFFER
#define GL_READ_FRAMEBUFFER 0x8CA8
#endif
#ifndef GL_DRAW_FRAMEBUFFER
#define GL_DRAW_FRAMEBUFFER 0x8CA9
#endif
#ifndef GL_TEXTURE_SAMPLES_IMG
#define GL_TEXTURE_SAMPLES_IMG 0x9136
#endif
#ifndef GL_PACK_INVERT_MESA
#define GL_PACK_INVERT_MESA 0x8758
#endif
#ifndef GL_PACK_REVERSE_ROW_ORDER_ANGLE
#define GL_PACK_REVERSE_ROW_ORDER_ANGLE 0x93A4
#endif
#ifndef GL_BACK_LEFT
#define GL_BACK_LEFT 0x0402
#endif
#ifndef GL_BACK_RIGHT
#define GL_BACK_RIGHT 0x0403
#endif
#ifndef GL_COLOR
#define GL_COLOR 0x1800
#endif
#ifndef GL_DEPTH
#define GL_DEPTH 0x1801
#endif
#ifndef GL_STENCIL
#define GL_STENCIL 0x1802
#endif
typedef struct _CoglGlFbo
{
GLuint fbo_handle;
GList *renderbuffers;
int samples_per_pixel;
} CoglGlFbo;
typedef struct _CoglGlFramebufferPrivate
{
CoglGlFbo gl_fbo;
gboolean dirty_bitmasks;
CoglFramebufferBits bits;
} CoglGlFramebufferPrivate;
struct _CoglGlFramebuffer
{
CoglFramebufferDriver parent;
};
G_DEFINE_TYPE_WITH_PRIVATE (CoglGlFramebuffer, cogl_gl_framebuffer,
COGL_TYPE_FRAMEBUFFER_DRIVER) COGL_TYPE_FRAMEBUFFER_DRIVER)
static void static void
@ -352,464 +248,12 @@ cogl_gl_framebuffer_flush_state_differences (CoglGlFramebuffer *gl_framebuffer,
COGL_FLAGS_FOREACH_END; COGL_FLAGS_FOREACH_END;
} }
static CoglGlFramebuffer *
cogl_gl_framebuffer_from_framebuffer (CoglFramebuffer *framebuffer)
{
CoglFramebufferDriver *driver = cogl_framebuffer_get_driver (framebuffer);
g_assert (driver);
return COGL_GL_FRAMEBUFFER (driver);
}
void void
_cogl_framebuffer_gl_bind (CoglFramebuffer *framebuffer, GLenum target) cogl_gl_framebuffer_bind (CoglGlFramebuffer *gl_framebuffer,
GLenum target)
{ {
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer); COGL_GL_FRAMEBUFFER_GET_CLASS (gl_framebuffer)->bind (gl_framebuffer,
target);
if (COGL_IS_OFFSCREEN (framebuffer))
{
CoglGlFramebuffer *gl_framebuffer =
cogl_gl_framebuffer_from_framebuffer (framebuffer);
CoglGlFramebufferPrivate *priv =
cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
GE (ctx, glBindFramebuffer (target, priv->gl_fbo.fbo_handle));
}
else
{
const CoglWinsysVtable *winsys =
_cogl_framebuffer_get_winsys (framebuffer);
winsys->onscreen_bind (COGL_ONSCREEN (framebuffer));
GE (ctx, glBindFramebuffer (target, 0));
/* Initialise the glDrawBuffer state the first time the context
* is bound to the default framebuffer. If the winsys is using a
* surfaceless context for the initial make current then the
* default draw buffer will be GL_NONE so we need to correct
* that. We can't do it any earlier because binding GL_BACK when
* there is no default framebuffer won't work */
if (!ctx->was_bound_to_onscreen)
{
if (ctx->glDrawBuffer)
{
GE (ctx, glDrawBuffer (GL_BACK));
}
else if (ctx->glDrawBuffers)
{
/* glDrawBuffer isn't available on GLES 3.0 so we need
* to be able to use glDrawBuffers as well. On GLES 2
* neither is available but the state should always be
* GL_BACK anyway so we don't need to set anything. On
* desktop GL this must be GL_BACK_LEFT instead of
* GL_BACK but as this code path will only be hit for
* GLES we can just use GL_BACK. */
static const GLenum buffers[] = { GL_BACK };
GE (ctx, glDrawBuffers (G_N_ELEMENTS (buffers), buffers));
}
ctx->was_bound_to_onscreen = TRUE;
}
}
}
static GList *
try_creating_renderbuffers (CoglContext *ctx,
int width,
int height,
CoglOffscreenAllocateFlags flags,
int n_samples)
{
GList *renderbuffers = NULL;
GLuint gl_depth_stencil_handle;
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL)
{
GLenum format;
/* WebGL adds a GL_DEPTH_STENCIL_ATTACHMENT and requires that we
* use the GL_DEPTH_STENCIL format. */
/* Although GL_OES_packed_depth_stencil is mostly equivalent to
* GL_EXT_packed_depth_stencil, one notable difference is that
* GL_OES_packed_depth_stencil doesn't allow GL_DEPTH_STENCIL to
* be passed as an internal format to glRenderbufferStorage.
*/
if (_cogl_has_private_feature
(ctx, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL))
format = GL_DEPTH_STENCIL;
else
{
g_return_val_if_fail (
_cogl_has_private_feature (ctx,
COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL),
NULL);
format = GL_DEPTH24_STENCIL8;
}
/* Create a renderbuffer for depth and stenciling */
GE (ctx, glGenRenderbuffers (1, &gl_depth_stencil_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_stencil_handle));
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
format,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, format,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER,
gl_depth_stencil_handle));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
gl_depth_stencil_handle));
renderbuffers =
g_list_prepend (renderbuffers,
GUINT_TO_POINTER (gl_depth_stencil_handle));
}
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH)
{
GLuint gl_depth_handle;
GE (ctx, glGenRenderbuffers (1, &gl_depth_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_handle));
/* For now we just ask for GL_DEPTH_COMPONENT16 since this is all that's
* available under GLES */
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
GL_DEPTH_COMPONENT16,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, gl_depth_handle));
renderbuffers =
g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_depth_handle));
}
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL)
{
GLuint gl_stencil_handle;
GE (ctx, glGenRenderbuffers (1, &gl_stencil_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_stencil_handle));
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
GL_STENCIL_INDEX8,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_STENCIL_INDEX8,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER, gl_stencil_handle));
renderbuffers =
g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_stencil_handle));
}
return renderbuffers;
}
static void
delete_renderbuffers (CoglContext *ctx, GList *renderbuffers)
{
GList *l;
for (l = renderbuffers; l; l = l->next)
{
GLuint renderbuffer = GPOINTER_TO_UINT (l->data);
GE (ctx, glDeleteRenderbuffers (1, &renderbuffer));
}
g_list_free (renderbuffers);
}
/*
* NB: This function may be called with a standalone GLES2 context
* bound so we can create a shadow framebuffer that wraps the same
* CoglTexture as the given CoglOffscreen. This function shouldn't
* modify anything in
*/
static gboolean
try_creating_fbo (CoglContext *ctx,
CoglTexture *texture,
int texture_level,
int texture_level_width,
int texture_level_height,
const CoglFramebufferConfig *config,
CoglOffscreenAllocateFlags flags,
CoglGlFbo *gl_fbo)
{
GLuint tex_gl_handle;
GLenum tex_gl_target;
GLenum status;
int n_samples;
if (!cogl_texture_get_gl_texture (texture, &tex_gl_handle, &tex_gl_target))
return FALSE;
if (tex_gl_target != GL_TEXTURE_2D
#ifdef HAVE_COGL_GL
&& tex_gl_target != GL_TEXTURE_RECTANGLE_ARB
#endif
)
return FALSE;
if (config->samples_per_pixel)
{
if (!ctx->glFramebufferTexture2DMultisampleIMG)
return FALSE;
n_samples = config->samples_per_pixel;
}
else
n_samples = 0;
/* We are about to generate and bind a new fbo, so we pretend to
* change framebuffer state so that the old framebuffer will be
* rebound again before drawing. */
ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_BIND;
/* Generate framebuffer */
ctx->glGenFramebuffers (1, &gl_fbo->fbo_handle);
GE (ctx, glBindFramebuffer (GL_FRAMEBUFFER, gl_fbo->fbo_handle));
if (n_samples)
{
GE (ctx, glFramebufferTexture2DMultisampleIMG (GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
tex_gl_target, tex_gl_handle,
n_samples,
texture_level));
}
else
GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
tex_gl_target, tex_gl_handle,
texture_level));
if (flags)
{
gl_fbo->renderbuffers =
try_creating_renderbuffers (ctx,
texture_level_width,
texture_level_height,
flags,
n_samples);
}
/* Make sure it's complete */
status = ctx->glCheckFramebufferStatus (GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
{
GE (ctx, glDeleteFramebuffers (1, &gl_fbo->fbo_handle));
delete_renderbuffers (ctx, gl_fbo->renderbuffers);
gl_fbo->renderbuffers = NULL;
return FALSE;
}
/* Update the real number of samples_per_pixel now that we have a
* complete framebuffer */
if (n_samples)
{
GLenum attachment = GL_COLOR_ATTACHMENT0;
GLenum pname = GL_TEXTURE_SAMPLES_IMG;
int texture_samples;
GE( ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
attachment,
pname,
&texture_samples) );
gl_fbo->samples_per_pixel = texture_samples;
}
return TRUE;
}
CoglFramebufferDriver *
_cogl_driver_gl_create_framebuffer_driver (CoglContext *context,
CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error)
{
CoglOffscreenAllocateFlags allocate_flags;
CoglOffscreen *offscreen;
CoglGlFramebuffer *gl_framebuffer;
CoglGlFramebufferPrivate *priv;
CoglGlFbo *gl_fbo;
const CoglFramebufferConfig *config;
CoglTexture *texture;
int texture_level;
int level_width;
int level_height;
if (COGL_IS_ONSCREEN (framebuffer))
{
return g_object_new (COGL_TYPE_GL_FRAMEBUFFER,
"framebuffer", framebuffer,
NULL);
}
offscreen = COGL_OFFSCREEN (framebuffer);
texture = cogl_offscreen_get_texture (offscreen);
texture_level = cogl_offscreen_get_texture_level (offscreen);
g_return_val_if_fail (texture_level < _cogl_texture_get_n_levels (texture),
FALSE);
_cogl_texture_get_level_size (texture,
texture_level,
&level_width,
&level_height,
NULL);
/* XXX: The framebuffer_object spec isn't clear in defining whether attaching
* a texture as a renderbuffer with mipmap filtering enabled while the
* mipmaps have not been uploaded should result in an incomplete framebuffer
* object. (different drivers make different decisions)
*
* To avoid an error with drivers that do consider this a problem we
* explicitly set non mipmapped filters here. These will later be reset when
* the texture is actually used for rendering according to the filters set on
* the corresponding CoglPipeline.
*/
_cogl_texture_gl_flush_legacy_texobj_filters (texture,
GL_NEAREST, GL_NEAREST);
config = cogl_framebuffer_get_config (framebuffer);
gl_framebuffer = g_object_new (COGL_TYPE_GL_FRAMEBUFFER,
"framebuffer", framebuffer,
NULL);
priv = cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
gl_fbo = &priv->gl_fbo;
if ((driver_config->disable_depth_and_stencil &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = 0,
gl_fbo)) ||
(context->have_last_offscreen_allocate_flags &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = context->last_offscreen_allocate_flags,
gl_fbo)) ||
(
/* NB: WebGL introduces a DEPTH_STENCIL_ATTACHMENT and doesn't
* need an extension to handle _FLAG_DEPTH_STENCIL */
(_cogl_has_private_feature
(context, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL) ||
_cogl_has_private_feature
(context, COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL)) &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL,
gl_fbo)) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH |
COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = 0,
gl_fbo))
{
cogl_framebuffer_update_samples_per_pixel (framebuffer,
gl_fbo->samples_per_pixel);
if (!driver_config->disable_depth_and_stencil)
{
/* Record that the last set of flags succeeded so that we can
try that set first next time */
context->last_offscreen_allocate_flags = allocate_flags;
context->have_last_offscreen_allocate_flags = TRUE;
}
return COGL_FRAMEBUFFER_DRIVER (gl_framebuffer);
}
else
{
g_object_unref (gl_framebuffer);
g_set_error (error, COGL_FRAMEBUFFER_ERROR,
COGL_FRAMEBUFFER_ERROR_ALLOCATE,
"Failed to create an OpenGL framebuffer object");
return NULL;
}
}
static void
cogl_gl_framebuffer_dispose (GObject *object)
{
CoglGlFramebuffer *gl_framebuffer = COGL_GL_FRAMEBUFFER (object);
CoglGlFramebufferPrivate *priv =
cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (object);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
G_OBJECT_CLASS (cogl_gl_framebuffer_parent_class)->dispose (object);
delete_renderbuffers (ctx, priv->gl_fbo.renderbuffers);
GE (ctx, glDeleteFramebuffers (1, &priv->gl_fbo.fbo_handle));
} }
void void
@ -857,118 +301,6 @@ _cogl_framebuffer_gl_clear (CoglFramebuffer *framebuffer,
GE (ctx, glClear (gl_buffers)); GE (ctx, glClear (gl_buffers));
} }
static inline void
_cogl_framebuffer_init_bits (CoglFramebuffer *framebuffer)
{
CoglGlFramebuffer *gl_framebuffer =
cogl_gl_framebuffer_from_framebuffer (framebuffer);
CoglGlFramebufferPrivate *priv =
cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
if (!priv->dirty_bitmasks)
return;
cogl_framebuffer_allocate (framebuffer, NULL);
cogl_context_flush_framebuffer_state (ctx,
framebuffer,
framebuffer,
COGL_FRAMEBUFFER_STATE_BIND);
#ifdef HAVE_COGL_GL
if ((ctx->driver == COGL_DRIVER_GL3 &&
COGL_IS_ONSCREEN (framebuffer)) ||
(_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_QUERY_FRAMEBUFFER_BITS) &&
COGL_IS_OFFSCREEN (framebuffer)))
{
gboolean is_offscreen = COGL_IS_OFFSCREEN (framebuffer);
const struct {
GLenum attachment, pname;
size_t offset;
} params[] = {
{ is_offscreen ? GL_COLOR_ATTACHMENT0 : GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,
offsetof (CoglFramebufferBits, red) },
{ is_offscreen ? GL_COLOR_ATTACHMENT0 : GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE,
offsetof (CoglFramebufferBits, green) },
{ is_offscreen ? GL_COLOR_ATTACHMENT0 : GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,
offsetof (CoglFramebufferBits, blue) },
{ is_offscreen ? GL_COLOR_ATTACHMENT0 : GL_BACK_LEFT,
GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
offsetof (CoglFramebufferBits, alpha) },
{ is_offscreen ? GL_DEPTH_ATTACHMENT : GL_DEPTH,
GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE,
offsetof (CoglFramebufferBits, depth) },
{ is_offscreen ? GL_STENCIL_ATTACHMENT : GL_STENCIL,
GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
offsetof (CoglFramebufferBits, stencil) },
};
int i;
for (i = 0; i < G_N_ELEMENTS (params); i++)
{
int *value =
(int *) ((uint8_t *) &priv->bits + params[i].offset);
GE( ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
params[i].attachment,
params[i].pname,
value) );
}
}
else
#endif /* HAVE_COGL_GL */
{
GE (ctx, glGetIntegerv (GL_RED_BITS, &priv->bits.red));
GE (ctx, glGetIntegerv (GL_GREEN_BITS, &priv->bits.green));
GE (ctx, glGetIntegerv (GL_BLUE_BITS, &priv->bits.blue));
GE (ctx, glGetIntegerv (GL_ALPHA_BITS, &priv->bits.alpha));
GE (ctx, glGetIntegerv (GL_DEPTH_BITS, &priv->bits.depth));
GE (ctx, glGetIntegerv (GL_STENCIL_BITS, &priv->bits.stencil));
}
/* If we don't have alpha textures then the alpha bits are actually
* stored in the red component */
if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES) &&
COGL_IS_OFFSCREEN (framebuffer) &&
cogl_framebuffer_get_internal_format (framebuffer) == COGL_PIXEL_FORMAT_A_8)
{
priv->bits.alpha = priv->bits.red;
priv->bits.red = 0;
}
COGL_NOTE (OFFSCREEN,
"RGBA/D/S Bits for framebuffer[%p, %s]: %d, %d, %d, %d, %d, %d",
framebuffer,
COGL_IS_OFFSCREEN (framebuffer) ? "offscreen" : "onscreen",
priv->bits.red,
priv->bits.blue,
priv->bits.green,
priv->bits.alpha,
priv->bits.depth,
priv->bits.stencil);
priv->dirty_bitmasks = FALSE;
}
void
_cogl_framebuffer_gl_query_bits (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits)
{
CoglGlFramebuffer *gl_framebuffer =
cogl_gl_framebuffer_from_framebuffer (framebuffer);
CoglGlFramebufferPrivate *priv =
cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
_cogl_framebuffer_init_bits (framebuffer);
/* TODO: cache these in some driver specific location not
* directly as part of CoglFramebuffer. */
*bits = priv->bits;
}
void void
_cogl_framebuffer_gl_finish (CoglFramebuffer *framebuffer) _cogl_framebuffer_gl_finish (CoglFramebuffer *framebuffer)
{ {
@ -1365,16 +697,9 @@ EXIT:
static void static void
cogl_gl_framebuffer_init (CoglGlFramebuffer *gl_framebuffer) cogl_gl_framebuffer_init (CoglGlFramebuffer *gl_framebuffer)
{ {
CoglGlFramebufferPrivate *priv =
cogl_gl_framebuffer_get_instance_private (gl_framebuffer);
priv->dirty_bitmasks = TRUE;
} }
static void static void
cogl_gl_framebuffer_class_init (CoglGlFramebufferClass *klass) cogl_gl_framebuffer_class_init (CoglGlFramebufferClass *klass)
{ {
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = cogl_gl_framebuffer_dispose;
} }

239
cogl/cogl/driver/gl/cogl-gl-framebuffer-back.c Normal file
View File

@ -0,0 +1,239 @@
/*
* Copyright (C) 2007,2008,2009,2012 Intel Corporation.
* Copyright (C) 2018 DisplayLink (UK) Ltd.
* Copyright (C) 2020 Red Hat
*
* 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.
*
*/
#include "cogl-config.h"
#include "driver/gl/cogl-gl-framebuffer-back.h"
#include <gio/gio.h>
#include "cogl-context-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl-offscreen-private.h"
#include "driver/gl/cogl-util-gl-private.h"
struct _CoglGlFramebufferBack
{
CoglGlFramebuffer parent;
gboolean dirty_bitmasks;
CoglFramebufferBits bits;
};
G_DEFINE_TYPE (CoglGlFramebufferBack, cogl_gl_framebuffer_back,
COGL_TYPE_GL_FRAMEBUFFER)
static gboolean
ensure_bits_initialized (CoglGlFramebufferBack *gl_framebuffer_back)
{
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_back);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
CoglFramebufferBits *bits = &gl_framebuffer_back->bits;
g_autoptr (GError) error = NULL;
if (!gl_framebuffer_back->dirty_bitmasks)
return TRUE;
cogl_context_flush_framebuffer_state (ctx,
framebuffer,
framebuffer,
COGL_FRAMEBUFFER_STATE_BIND);
#ifdef HAVE_COGL_GL
if (ctx->driver == COGL_DRIVER_GL3)
{
const struct {
GLenum attachment, pname;
size_t offset;
} params[] = {
{
.attachment = GL_BACK_LEFT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,
.offset = offsetof (CoglFramebufferBits, red),
},
{
.attachment = GL_BACK_LEFT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE,
.offset = offsetof (CoglFramebufferBits, green),
},
{
.attachment = GL_BACK_LEFT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,
.offset = offsetof (CoglFramebufferBits, blue),
},
{
.attachment = GL_BACK_LEFT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
.offset = offsetof (CoglFramebufferBits, alpha),
},
{
.attachment = GL_DEPTH,
.pname = GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE,
.offset = offsetof (CoglFramebufferBits, depth),
},
{
.attachment = GL_STENCIL,
.pname = GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
.offset = offsetof (CoglFramebufferBits, stencil),
},
};
int i;
for (i = 0; i < G_N_ELEMENTS (params); i++)
{
int *value =
(int *) ((uint8_t *) bits + params[i].offset);
GE (ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
params[i].attachment,
params[i].pname,
value));
}
}
else
#endif /* HAVE_COGL_GL */
{
GE (ctx, glGetIntegerv (GL_RED_BITS, &bits->red));
GE (ctx, glGetIntegerv (GL_GREEN_BITS, &bits->green));
GE (ctx, glGetIntegerv (GL_BLUE_BITS, &bits->blue));
GE (ctx, glGetIntegerv (GL_ALPHA_BITS, &bits->alpha));
GE (ctx, glGetIntegerv (GL_DEPTH_BITS, &bits->depth));
GE (ctx, glGetIntegerv (GL_STENCIL_BITS, &bits->stencil));
}
COGL_NOTE (FRAMEBUFFER,
"RGBA/D/S Bits for framebuffer[%p, %s]: %d, %d, %d, %d, %d, %d",
framebuffer,
COGL_IS_OFFSCREEN (framebuffer) ? "offscreen" : "onscreen",
bits->red,
bits->blue,
bits->green,
bits->alpha,
bits->depth,
bits->stencil);
gl_framebuffer_back->dirty_bitmasks = FALSE;
return TRUE;
}
static void
cogl_gl_framebuffer_back_query_bits (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits)
{
CoglGlFramebufferBack *gl_framebuffer_back = COGL_GL_FRAMEBUFFER_BACK (driver);
if (!ensure_bits_initialized (gl_framebuffer_back))
return;
*bits = gl_framebuffer_back->bits;
}
static void
cogl_gl_framebuffer_back_bind (CoglGlFramebuffer *gl_framebuffer,
GLenum target)
{
CoglGlFramebufferBack *gl_framebuffer_back =
COGL_GL_FRAMEBUFFER_BACK (gl_framebuffer);
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_back);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
const CoglWinsysVtable *winsys =
_cogl_framebuffer_get_winsys (framebuffer);
winsys->onscreen_bind (COGL_ONSCREEN (framebuffer));
GE (ctx, glBindFramebuffer (target, 0));
/* Initialise the glDrawBuffer state the first time the context
* is bound to the default framebuffer. If the winsys is using a
* surfaceless context for the initial make current then the
* default draw buffer will be GL_NONE so we need to correct
* that. We can't do it any earlier because binding GL_BACK when
* there is no default framebuffer won't work */
if (!ctx->was_bound_to_onscreen)
{
if (ctx->glDrawBuffer)
{
GE (ctx, glDrawBuffer (GL_BACK));
}
else if (ctx->glDrawBuffers)
{
/* glDrawBuffer isn't available on GLES 3.0 so we need
* to be able to use glDrawBuffers as well. On GLES 2
* neither is available but the state should always be
* GL_BACK anyway so we don't need to set anything. On
* desktop GL this must be GL_BACK_LEFT instead of
* GL_BACK but as this code path will only be hit for
* GLES we can just use GL_BACK. */
static const GLenum buffers[] = { GL_BACK };
GE (ctx, glDrawBuffers (G_N_ELEMENTS (buffers), buffers));
}
ctx->was_bound_to_onscreen = TRUE;
}
}
CoglGlFramebufferBack *
cogl_gl_framebuffer_back_new (CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error)
{
if (!COGL_IS_ONSCREEN (framebuffer))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Incompatible framebuffer");
return NULL;
}
return g_object_new (COGL_TYPE_GL_FRAMEBUFFER_BACK,
"framebuffer", framebuffer,
NULL);
}
static void
cogl_gl_framebuffer_back_init (CoglGlFramebufferBack *gl_framebuffer_back)
{
gl_framebuffer_back->dirty_bitmasks = TRUE;
}
static void
cogl_gl_framebuffer_back_class_init (CoglGlFramebufferBackClass *klass)
{
CoglFramebufferDriverClass *driver_class =
COGL_FRAMEBUFFER_DRIVER_CLASS (klass);
CoglGlFramebufferClass *gl_framebuffer_class =
COGL_GL_FRAMEBUFFER_CLASS (klass);
driver_class->query_bits = cogl_gl_framebuffer_back_query_bits;
gl_framebuffer_class->bind = cogl_gl_framebuffer_back_bind;
}

41
cogl/cogl/driver/gl/cogl-gl-framebuffer-back.h Normal file
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@ -0,0 +1,41 @@
/*
* Copyright (C) 2020 Red Hat
*
* 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.
*
*/
#ifndef COGL_GL_FRAMEBUFFER_BACK_H
#define COGL_GL_FRAMEBUFFER_BACK_H
#include "cogl-framebuffer-gl-private.h"
#define COGL_TYPE_GL_FRAMEBUFFER_BACK (cogl_gl_framebuffer_back_get_type ())
G_DECLARE_FINAL_TYPE (CoglGlFramebufferBack, cogl_gl_framebuffer_back,
COGL, GL_FRAMEBUFFER_BACK,
CoglGlFramebuffer)
CoglGlFramebufferBack *
cogl_gl_framebuffer_back_new (CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error);
#endif /* COGL_GL_FRAMEBUFFER_BACK_H */

611
cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.c Normal file
View File

@ -0,0 +1,611 @@
/*
* Copyright (C) 2007,2008,2009,2012 Intel Corporation.
* Copyright (C) 2018 DisplayLink (UK) Ltd.
* Copyright (C) 2020 Red Hat
*
* 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.
*
*/
#include "cogl-config.h"
#include "driver/gl/cogl-gl-framebuffer-fbo.h"
#include <gio/gio.h>
#include "cogl-context-private.h"
#include "cogl-framebuffer-private.h"
#include "cogl-offscreen-private.h"
#include "driver/gl/cogl-texture-gl-private.h"
#include "driver/gl/cogl-util-gl-private.h"
typedef struct _CoglGlFbo
{
GLuint fbo_handle;
GList *renderbuffers;
int samples_per_pixel;
} CoglGlFbo;
struct _CoglGlFramebufferFbo
{
CoglGlFramebuffer parent;
CoglGlFbo gl_fbo;
gboolean dirty_bitmasks;
CoglFramebufferBits bits;
};
G_DEFINE_TYPE (CoglGlFramebufferFbo, cogl_gl_framebuffer_fbo,
COGL_TYPE_GL_FRAMEBUFFER)
static gboolean
ensure_bits_initialized (CoglGlFramebufferFbo *gl_framebuffer_fbo)
{
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
CoglFramebufferBits *bits = &gl_framebuffer_fbo->bits;
g_autoptr (GError) error = NULL;
if (!gl_framebuffer_fbo->dirty_bitmasks)
return TRUE;
cogl_context_flush_framebuffer_state (ctx,
framebuffer,
framebuffer,
COGL_FRAMEBUFFER_STATE_BIND);
#ifdef HAVE_COGL_GL
if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_QUERY_FRAMEBUFFER_BITS))
{
const struct {
GLenum attachment, pname;
size_t offset;
} params[] = {
{
.attachment = GL_COLOR_ATTACHMENT0,
.pname = GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE,
.offset = offsetof (CoglFramebufferBits, red),
},
{
.attachment = GL_COLOR_ATTACHMENT0,
.pname = GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE,
.offset = offsetof (CoglFramebufferBits, green),
},
{
.attachment = GL_COLOR_ATTACHMENT0,
.pname = GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE,
.offset = offsetof (CoglFramebufferBits, blue),
},
{
.attachment = GL_COLOR_ATTACHMENT0,
.pname = GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
.offset = offsetof (CoglFramebufferBits, alpha),
},
{
.attachment = GL_DEPTH_ATTACHMENT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE,
.offset = offsetof (CoglFramebufferBits, depth),
},
{
.attachment = GL_STENCIL_ATTACHMENT,
.pname = GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
.offset = offsetof (CoglFramebufferBits, stencil),
},
};
int i;
for (i = 0; i < G_N_ELEMENTS (params); i++)
{
int *value =
(int *) ((uint8_t *) bits + params[i].offset);
GE (ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
params[i].attachment,
params[i].pname,
value));
}
}
else
#endif /* HAVE_COGL_GL */
{
GE (ctx, glGetIntegerv (GL_RED_BITS, &bits->red));
GE (ctx, glGetIntegerv (GL_GREEN_BITS, &bits->green));
GE (ctx, glGetIntegerv (GL_BLUE_BITS, &bits->blue));
GE (ctx, glGetIntegerv (GL_ALPHA_BITS, &bits->alpha));
GE (ctx, glGetIntegerv (GL_DEPTH_BITS, &bits->depth));
GE (ctx, glGetIntegerv (GL_STENCIL_BITS, &bits->stencil));
}
if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES) &&
(cogl_framebuffer_get_internal_format (framebuffer) ==
COGL_PIXEL_FORMAT_A_8))
{
bits->alpha = bits->red;
bits->red = 0;
}
COGL_NOTE (FRAMEBUFFER,
"RGBA/D/S Bits for framebuffer[%p, %s]: %d, %d, %d, %d, %d, %d",
framebuffer,
COGL_IS_OFFSCREEN (framebuffer) ? "offscreen" : "onscreen",
bits->red,
bits->blue,
bits->green,
bits->alpha,
bits->depth,
bits->stencil);
gl_framebuffer_fbo->dirty_bitmasks = FALSE;
return TRUE;
}
static void
cogl_gl_framebuffer_fbo_query_bits (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits)
{
CoglGlFramebufferFbo *gl_framebuffer_fbo = COGL_GL_FRAMEBUFFER_FBO (driver);
if (!ensure_bits_initialized (gl_framebuffer_fbo))
return;
*bits = gl_framebuffer_fbo->bits;
}
static void
cogl_gl_framebuffer_fbo_bind (CoglGlFramebuffer *gl_framebuffer,
GLenum target)
{
CoglGlFramebufferFbo *gl_framebuffer_fbo =
COGL_GL_FRAMEBUFFER_FBO (gl_framebuffer);
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
GE (ctx, glBindFramebuffer (target, gl_framebuffer_fbo->gl_fbo.fbo_handle));
}
static GList *
try_creating_renderbuffers (CoglContext *ctx,
int width,
int height,
CoglOffscreenAllocateFlags flags,
int n_samples)
{
GList *renderbuffers = NULL;
GLuint gl_depth_stencil_handle;
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL)
{
GLenum format;
/* WebGL adds a GL_DEPTH_STENCIL_ATTACHMENT and requires that we
* use the GL_DEPTH_STENCIL format. */
/* Although GL_OES_packed_depth_stencil is mostly equivalent to
* GL_EXT_packed_depth_stencil, one notable difference is that
* GL_OES_packed_depth_stencil doesn't allow GL_DEPTH_STENCIL to
* be passed as an internal format to glRenderbufferStorage.
*/
if (_cogl_has_private_feature
(ctx, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL))
format = GL_DEPTH_STENCIL;
else
{
g_return_val_if_fail (
_cogl_has_private_feature (ctx,
COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL),
NULL);
format = GL_DEPTH24_STENCIL8;
}
/* Create a renderbuffer for depth and stenciling */
GE (ctx, glGenRenderbuffers (1, &gl_depth_stencil_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_stencil_handle));
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
format,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, format,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER,
gl_depth_stencil_handle));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
gl_depth_stencil_handle));
renderbuffers =
g_list_prepend (renderbuffers,
GUINT_TO_POINTER (gl_depth_stencil_handle));
}
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH)
{
GLuint gl_depth_handle;
GE (ctx, glGenRenderbuffers (1, &gl_depth_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_depth_handle));
/* For now we just ask for GL_DEPTH_COMPONENT16 since this is all that's
* available under GLES */
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
GL_DEPTH_COMPONENT16,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, gl_depth_handle));
renderbuffers =
g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_depth_handle));
}
if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL)
{
GLuint gl_stencil_handle;
GE (ctx, glGenRenderbuffers (1, &gl_stencil_handle));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, gl_stencil_handle));
if (n_samples)
GE (ctx, glRenderbufferStorageMultisampleIMG (GL_RENDERBUFFER,
n_samples,
GL_STENCIL_INDEX8,
width, height));
else
GE (ctx, glRenderbufferStorage (GL_RENDERBUFFER, GL_STENCIL_INDEX8,
width, height));
GE (ctx, glBindRenderbuffer (GL_RENDERBUFFER, 0));
GE (ctx, glFramebufferRenderbuffer (GL_FRAMEBUFFER,
GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER, gl_stencil_handle));
renderbuffers =
g_list_prepend (renderbuffers, GUINT_TO_POINTER (gl_stencil_handle));
}
return renderbuffers;
}
static void
delete_renderbuffers (CoglContext *ctx,
GList *renderbuffers)
{
GList *l;
for (l = renderbuffers; l; l = l->next)
{
GLuint renderbuffer = GPOINTER_TO_UINT (l->data);
GE (ctx, glDeleteRenderbuffers (1, &renderbuffer));
}
g_list_free (renderbuffers);
}
/*
* NB: This function may be called with a standalone GLES2 context
* bound so we can create a shadow framebuffer that wraps the same
* CoglTexture as the given CoglOffscreen. This function shouldn't
* modify anything in
*/
static gboolean
try_creating_fbo (CoglContext *ctx,
CoglTexture *texture,
int texture_level,
int texture_level_width,
int texture_level_height,
const CoglFramebufferConfig *config,
CoglOffscreenAllocateFlags flags,
CoglGlFbo *gl_fbo)
{
GLuint tex_gl_handle;
GLenum tex_gl_target;
GLenum status;
int n_samples;
if (!cogl_texture_get_gl_texture (texture, &tex_gl_handle, &tex_gl_target))
return FALSE;
if (tex_gl_target != GL_TEXTURE_2D
#ifdef HAVE_COGL_GL
&& tex_gl_target != GL_TEXTURE_RECTANGLE_ARB
#endif
)
return FALSE;
if (config->samples_per_pixel)
{
if (!ctx->glFramebufferTexture2DMultisampleIMG)
return FALSE;
n_samples = config->samples_per_pixel;
}
else
n_samples = 0;
/* We are about to generate and bind a new fbo, so we pretend to
* change framebuffer state so that the old framebuffer will be
* rebound again before drawing. */
ctx->current_draw_buffer_changes |= COGL_FRAMEBUFFER_STATE_BIND;
/* Generate framebuffer */
ctx->glGenFramebuffers (1, &gl_fbo->fbo_handle);
GE (ctx, glBindFramebuffer (GL_FRAMEBUFFER, gl_fbo->fbo_handle));
if (n_samples)
{
GE (ctx, glFramebufferTexture2DMultisampleIMG (GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
tex_gl_target, tex_gl_handle,
n_samples,
texture_level));
}
else
GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
tex_gl_target, tex_gl_handle,
texture_level));
if (flags)
{
gl_fbo->renderbuffers =
try_creating_renderbuffers (ctx,
texture_level_width,
texture_level_height,
flags,
n_samples);
}
/* Make sure it's complete */
status = ctx->glCheckFramebufferStatus (GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
{
GE (ctx, glDeleteFramebuffers (1, &gl_fbo->fbo_handle));
delete_renderbuffers (ctx, gl_fbo->renderbuffers);
gl_fbo->renderbuffers = NULL;
return FALSE;
}
/* Update the real number of samples_per_pixel now that we have a
* complete framebuffer */
if (n_samples)
{
GLenum attachment = GL_COLOR_ATTACHMENT0;
GLenum pname = GL_TEXTURE_SAMPLES_IMG;
int texture_samples;
GE( ctx, glGetFramebufferAttachmentParameteriv (GL_FRAMEBUFFER,
attachment,
pname,
&texture_samples) );
gl_fbo->samples_per_pixel = texture_samples;
}
return TRUE;
}
CoglGlFramebufferFbo *
cogl_gl_framebuffer_fbo_new (CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error)
{
CoglContext *context = cogl_framebuffer_get_context (framebuffer);
CoglOffscreen *offscreen;
CoglTexture *texture;
int texture_level;
int level_width;
int level_height;
const CoglFramebufferConfig *config;
CoglGlFbo *gl_fbo;
CoglGlFramebufferFbo *gl_framebuffer_fbo;
CoglOffscreenAllocateFlags allocate_flags;
if (!COGL_IS_OFFSCREEN (framebuffer))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Incompatible framebuffer");
return NULL;
}
offscreen = COGL_OFFSCREEN (framebuffer);
texture = cogl_offscreen_get_texture (offscreen);
texture_level = cogl_offscreen_get_texture_level (offscreen);
g_return_val_if_fail (texture_level < _cogl_texture_get_n_levels (texture),
NULL);
_cogl_texture_get_level_size (texture,
texture_level,
&level_width,
&level_height,
NULL);
/* XXX: The framebuffer_object spec isn't clear in defining whether attaching
* a texture as a renderbuffer with mipmap filtering enabled while the
* mipmaps have not been uploaded should result in an incomplete framebuffer
* object. (different drivers make different decisions)
*
* To avoid an error with drivers that do consider this a problem we
* explicitly set non mipmapped filters here. These will later be reset when
* the texture is actually used for rendering according to the filters set on
* the corresponding CoglPipeline.
*/
_cogl_texture_gl_flush_legacy_texobj_filters (texture,
GL_NEAREST, GL_NEAREST);
config = cogl_framebuffer_get_config (framebuffer);
gl_framebuffer_fbo = g_object_new (COGL_TYPE_GL_FRAMEBUFFER_FBO,
"framebuffer", framebuffer,
NULL);
gl_fbo = &gl_framebuffer_fbo->gl_fbo;
if ((driver_config->disable_depth_and_stencil &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = 0,
gl_fbo)) ||
(context->have_last_offscreen_allocate_flags &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = context->last_offscreen_allocate_flags,
gl_fbo)) ||
(
/* NB: WebGL introduces a DEPTH_STENCIL_ATTACHMENT and doesn't
* need an extension to handle _FLAG_DEPTH_STENCIL */
(_cogl_has_private_feature
(context, COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL) ||
_cogl_has_private_feature
(context, COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL)) &&
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH_STENCIL,
gl_fbo)) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH |
COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH,
gl_fbo) ||
try_creating_fbo (context,
texture,
texture_level,
level_width,
level_height,
config,
allocate_flags = 0,
gl_fbo))
{
cogl_framebuffer_update_samples_per_pixel (framebuffer,
gl_fbo->samples_per_pixel);
if (!driver_config->disable_depth_and_stencil)
{
/* Record that the last set of flags succeeded so that we can
try that set first next time */
context->last_offscreen_allocate_flags = allocate_flags;
context->have_last_offscreen_allocate_flags = TRUE;
}
return gl_framebuffer_fbo;
}
else
{
g_object_unref (gl_framebuffer_fbo);
g_set_error (error, COGL_FRAMEBUFFER_ERROR,
COGL_FRAMEBUFFER_ERROR_ALLOCATE,
"Failed to create an OpenGL framebuffer object");
return NULL;
}
}
static void
cogl_gl_framebuffer_fbo_dispose (GObject *object)
{
CoglGlFramebufferFbo *gl_framebuffer_fbo = COGL_GL_FRAMEBUFFER_FBO (object);
CoglFramebufferDriver *driver = COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo);
CoglFramebuffer *framebuffer =
cogl_framebuffer_driver_get_framebuffer (driver);
CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
delete_renderbuffers (ctx, gl_framebuffer_fbo->gl_fbo.renderbuffers);
gl_framebuffer_fbo->gl_fbo.renderbuffers = NULL;
if (gl_framebuffer_fbo->gl_fbo.fbo_handle)
{
GE (ctx, glDeleteFramebuffers (1,
&gl_framebuffer_fbo->gl_fbo.fbo_handle));
gl_framebuffer_fbo->gl_fbo.fbo_handle = 0;
}
G_OBJECT_CLASS (cogl_gl_framebuffer_fbo_parent_class)->dispose (object);
}
static void
cogl_gl_framebuffer_fbo_init (CoglGlFramebufferFbo *gl_framebuffer_fbo)
{
gl_framebuffer_fbo->dirty_bitmasks = TRUE;
}
static void
cogl_gl_framebuffer_fbo_class_init (CoglGlFramebufferFboClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
CoglFramebufferDriverClass *driver_class =
COGL_FRAMEBUFFER_DRIVER_CLASS (klass);
CoglGlFramebufferClass *gl_framebuffer_class =
COGL_GL_FRAMEBUFFER_CLASS (klass);
object_class->dispose = cogl_gl_framebuffer_fbo_dispose;
driver_class->query_bits = cogl_gl_framebuffer_fbo_query_bits;
gl_framebuffer_class->bind = cogl_gl_framebuffer_fbo_bind;
}

41
cogl/cogl/driver/gl/cogl-gl-framebuffer-fbo.h Normal file
View File

@ -0,0 +1,41 @@
/*
* Copyright (C) 2020 Red Hat
*
* 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.
*
*/
#ifndef COGL_GL_FRAMEBUFFER_FBO_H
#define COGL_GL_FRAMEBUFFER_FBO_H
#include "driver/gl/cogl-framebuffer-gl-private.h"
#define COGL_TYPE_GL_FRAMEBUFFER_FBO (cogl_gl_framebuffer_fbo_get_type ())
G_DECLARE_FINAL_TYPE (CoglGlFramebufferFbo, cogl_gl_framebuffer_fbo,
COGL, GL_FRAMEBUFFER_FBO,
CoglGlFramebuffer)
CoglGlFramebufferFbo *
cogl_gl_framebuffer_fbo_new (CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error);
#endif /* COGL_GL_FRAMEBUFFER_FBO_H */

83
cogl/cogl/driver/gl/cogl-util-gl-private.h
View File

@ -146,4 +146,87 @@ _cogl_gl_util_parse_gl_version (const char *version_string,
CoglGraphicsResetStatus CoglGraphicsResetStatus
_cogl_gl_get_graphics_reset_status (CoglContext *context); _cogl_gl_get_graphics_reset_status (CoglContext *context);
#ifndef GL_FRAMEBUFFER
#define GL_FRAMEBUFFER 0x8D40
#endif
#ifndef GL_RENDERBUFFER
#define GL_RENDERBUFFER 0x8D41
#endif
#ifndef GL_STENCIL_ATTACHMENT
#define GL_STENCIL_ATTACHMENT 0x8D00
#endif
#ifndef GL_COLOR_ATTACHMENT0
#define GL_COLOR_ATTACHMENT0 0x8CE0
#endif
#ifndef GL_FRAMEBUFFER_COMPLETE
#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
#endif
#ifndef GL_STENCIL_INDEX8
#define GL_STENCIL_INDEX8 0x8D48
#endif
#ifndef GL_DEPTH_STENCIL
#define GL_DEPTH_STENCIL 0x84F9
#endif
#ifndef GL_DEPTH24_STENCIL8
#define GL_DEPTH24_STENCIL8 0x88F0
#endif
#ifndef GL_DEPTH_ATTACHMENT
#define GL_DEPTH_ATTACHMENT 0x8D00
#endif
#ifndef GL_DEPTH_STENCIL_ATTACHMENT
#define GL_DEPTH_STENCIL_ATTACHMENT 0x821A
#endif
#ifndef GL_DEPTH_COMPONENT16
#define GL_DEPTH_COMPONENT16 0x81A5
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216
#endif
#ifndef GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
#define GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217
#endif
#ifndef GL_READ_FRAMEBUFFER
#define GL_READ_FRAMEBUFFER 0x8CA8
#endif
#ifndef GL_DRAW_FRAMEBUFFER
#define GL_DRAW_FRAMEBUFFER 0x8CA9
#endif
#ifndef GL_TEXTURE_SAMPLES_IMG
#define GL_TEXTURE_SAMPLES_IMG 0x9136
#endif
#ifndef GL_PACK_INVERT_MESA
#define GL_PACK_INVERT_MESA 0x8758
#endif
#ifndef GL_PACK_REVERSE_ROW_ORDER_ANGLE
#define GL_PACK_REVERSE_ROW_ORDER_ANGLE 0x93A4
#endif
#ifndef GL_BACK_LEFT
#define GL_BACK_LEFT 0x0402
#endif
#ifndef GL_BACK_RIGHT
#define GL_BACK_RIGHT 0x0403
#endif
#ifndef GL_COLOR
#define GL_COLOR 0x1800
#endif
#ifndef GL_DEPTH
#define GL_DEPTH 0x1801
#endif
#ifndef GL_STENCIL
#define GL_STENCIL 0x1802
#endif
#endif /* _COGL_UTIL_GL_PRIVATE_H_ */ #endif /* _COGL_UTIL_GL_PRIVATE_H_ */

58
cogl/cogl/driver/gl/cogl-util-gl.c
View File

@ -35,6 +35,8 @@
#include "cogl-types.h" #include "cogl-types.h"
#include "cogl-context-private.h" #include "cogl-context-private.h"
#include "driver/gl/cogl-framebuffer-gl-private.h" #include "driver/gl/cogl-framebuffer-gl-private.h"
#include "driver/gl/cogl-gl-framebuffer-fbo.h"
#include "driver/gl/cogl-gl-framebuffer-back.h"
#include "driver/gl/cogl-pipeline-opengl-private.h" #include "driver/gl/cogl-pipeline-opengl-private.h"
#include "driver/gl/cogl-util-gl-private.h" #include "driver/gl/cogl-util-gl-private.h"
@ -131,6 +133,46 @@ _cogl_driver_gl_context_deinit (CoglContext *context)
g_free (context->driver_context); g_free (context->driver_context);
} }
CoglFramebufferDriver *
_cogl_driver_gl_create_framebuffer_driver (CoglContext *context,
CoglFramebuffer *framebuffer,
const CoglFramebufferDriverConfig *driver_config,
GError **error)
{
g_return_val_if_fail (driver_config, NULL);
switch (driver_config->type)
{
case COGL_FRAMEBUFFER_DRIVER_TYPE_FBO:
{
CoglGlFramebufferFbo *gl_framebuffer_fbo;
gl_framebuffer_fbo = cogl_gl_framebuffer_fbo_new (framebuffer,
driver_config,
error);
if (!gl_framebuffer_fbo)
return NULL;
return COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_fbo);
}
case COGL_FRAMEBUFFER_DRIVER_TYPE_BACK:
{
CoglGlFramebufferBack *gl_framebuffer_back;
gl_framebuffer_back = cogl_gl_framebuffer_back_new (framebuffer,
driver_config,
error);
if (!gl_framebuffer_back)
return NULL;
return COGL_FRAMEBUFFER_DRIVER (gl_framebuffer_back);
}
}
g_assert_not_reached ();
return NULL;
}
void void
_cogl_driver_gl_flush_framebuffer_state (CoglContext *ctx, _cogl_driver_gl_flush_framebuffer_state (CoglContext *ctx,
CoglFramebuffer *draw_buffer, CoglFramebuffer *draw_buffer,
@ -138,6 +180,7 @@ _cogl_driver_gl_flush_framebuffer_state (CoglContext *ctx,
CoglFramebufferState state) CoglFramebufferState state)
{ {
CoglGlFramebuffer *draw_gl_framebuffer; CoglGlFramebuffer *draw_gl_framebuffer;
CoglGlFramebuffer *read_gl_framebuffer;
unsigned long differences; unsigned long differences;
/* We can assume that any state that has changed for the current /* We can assume that any state that has changed for the current
@ -193,13 +236,20 @@ _cogl_driver_gl_flush_framebuffer_state (CoglContext *ctx,
if (G_UNLIKELY (!cogl_framebuffer_is_allocated (read_buffer))) if (G_UNLIKELY (!cogl_framebuffer_is_allocated (read_buffer)))
cogl_framebuffer_allocate (read_buffer, NULL); cogl_framebuffer_allocate (read_buffer, NULL);
draw_gl_framebuffer =
COGL_GL_FRAMEBUFFER (cogl_framebuffer_get_driver (draw_buffer));
read_gl_framebuffer =
COGL_GL_FRAMEBUFFER (cogl_framebuffer_get_driver (read_buffer));
/* We handle buffer binding separately since the method depends on whether /* We handle buffer binding separately since the method depends on whether
* we are binding the same buffer for read and write or not unlike all * we are binding the same buffer for read and write or not unlike all
* other state that only relates to the draw_buffer. */ * other state that only relates to the draw_buffer. */
if (differences & COGL_FRAMEBUFFER_STATE_BIND) if (differences & COGL_FRAMEBUFFER_STATE_BIND)
{ {
if (draw_buffer == read_buffer) if (draw_buffer == read_buffer)
_cogl_framebuffer_gl_bind (draw_buffer, GL_FRAMEBUFFER); {
cogl_gl_framebuffer_bind (draw_gl_framebuffer, GL_FRAMEBUFFER);
}
else else
{ {
/* NB: Currently we only take advantage of binding separate /* NB: Currently we only take advantage of binding separate
@ -207,15 +257,13 @@ _cogl_driver_gl_flush_framebuffer_state (CoglContext *ctx,
g_return_if_fail (cogl_has_feature g_return_if_fail (cogl_has_feature
(ctx, COGL_FEATURE_ID_BLIT_FRAMEBUFFER)); (ctx, COGL_FEATURE_ID_BLIT_FRAMEBUFFER));
_cogl_framebuffer_gl_bind (draw_buffer, GL_DRAW_FRAMEBUFFER); cogl_gl_framebuffer_bind (draw_gl_framebuffer, GL_DRAW_FRAMEBUFFER);
_cogl_framebuffer_gl_bind (read_buffer, GL_READ_FRAMEBUFFER); cogl_gl_framebuffer_bind (read_gl_framebuffer, GL_READ_FRAMEBUFFER);
} }
differences &= ~COGL_FRAMEBUFFER_STATE_BIND; differences &= ~COGL_FRAMEBUFFER_STATE_BIND;
} }
draw_gl_framebuffer =
COGL_GL_FRAMEBUFFER (cogl_framebuffer_get_driver (draw_buffer));
cogl_gl_framebuffer_flush_state_differences (draw_gl_framebuffer, cogl_gl_framebuffer_flush_state_differences (draw_gl_framebuffer,
differences); differences);

1
cogl/cogl/driver/gl/gl/cogl-driver-gl.c
View File

@ -572,7 +572,6 @@ _cogl_driver_gl =
_cogl_driver_gl_create_framebuffer_driver, _cogl_driver_gl_create_framebuffer_driver,
_cogl_driver_gl_flush_framebuffer_state, _cogl_driver_gl_flush_framebuffer_state,
_cogl_framebuffer_gl_clear, _cogl_framebuffer_gl_clear,
_cogl_framebuffer_gl_query_bits,
_cogl_framebuffer_gl_finish, _cogl_framebuffer_gl_finish,
_cogl_framebuffer_gl_flush, _cogl_framebuffer_gl_flush,
_cogl_framebuffer_gl_discard_buffers, _cogl_framebuffer_gl_discard_buffers,

1
cogl/cogl/driver/gl/gles/cogl-driver-gles.c
View File

@ -460,7 +460,6 @@ _cogl_driver_gles =
_cogl_driver_gl_create_framebuffer_driver, _cogl_driver_gl_create_framebuffer_driver,
_cogl_driver_gl_flush_framebuffer_state, _cogl_driver_gl_flush_framebuffer_state,
_cogl_framebuffer_gl_clear, _cogl_framebuffer_gl_clear,
_cogl_framebuffer_gl_query_bits,
_cogl_framebuffer_gl_finish, _cogl_framebuffer_gl_finish,
_cogl_framebuffer_gl_flush, _cogl_framebuffer_gl_flush,
_cogl_framebuffer_gl_discard_buffers, _cogl_framebuffer_gl_discard_buffers,

1
cogl/cogl/driver/nop/cogl-driver-nop.c
View File

@ -100,7 +100,6 @@ _cogl_driver_nop =
_cogl_driver_nop_create_framebuffer_driver, _cogl_driver_nop_create_framebuffer_driver,
_cogl_driver_nop_flush_framebuffer_state, _cogl_driver_nop_flush_framebuffer_state,
_cogl_framebuffer_nop_clear, _cogl_framebuffer_nop_clear,
_cogl_framebuffer_nop_query_bits,
_cogl_framebuffer_nop_finish, _cogl_framebuffer_nop_finish,
_cogl_framebuffer_nop_flush, _cogl_framebuffer_nop_flush,
_cogl_framebuffer_nop_discard_buffers, _cogl_framebuffer_nop_discard_buffers,

4
cogl/cogl/driver/nop/cogl-framebuffer-nop-private.h
View File

@ -45,10 +45,6 @@ _cogl_framebuffer_nop_clear (CoglFramebuffer *framebuffer,
float blue, float blue,
float alpha); float alpha);
void
_cogl_framebuffer_nop_query_bits (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits);
void void
_cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer); _cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer);

7
cogl/cogl/driver/nop/cogl-framebuffer-nop.c
View File

@ -45,13 +45,6 @@ _cogl_framebuffer_nop_clear (CoglFramebuffer *framebuffer,
{ {
} }
void
_cogl_framebuffer_nop_query_bits (CoglFramebuffer *framebuffer,
CoglFramebufferBits *bits)
{
memset (bits, 0, sizeof (CoglFramebufferBits));
}
void void
_cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer) _cogl_framebuffer_nop_finish (CoglFramebuffer *framebuffer)
{ {

13
cogl/cogl/driver/nop/cogl-nop-framebuffer.c
View File

@ -27,6 +27,8 @@
#include "cogl-nop-framebuffer.h" #include "cogl-nop-framebuffer.h"
#include "cogl-framebuffer-private.h"
struct _CoglNopFramebuffer struct _CoglNopFramebuffer
{ {
CoglFramebufferDriver parent; CoglFramebufferDriver parent;
@ -35,6 +37,13 @@ struct _CoglNopFramebuffer
G_DEFINE_TYPE (CoglNopFramebuffer, cogl_nop_framebuffer, G_DEFINE_TYPE (CoglNopFramebuffer, cogl_nop_framebuffer,
COGL_TYPE_FRAMEBUFFER_DRIVER) COGL_TYPE_FRAMEBUFFER_DRIVER)
static void
cogl_nop_framebuffer_query_bits (CoglFramebufferDriver *driver,
CoglFramebufferBits *bits)
{
memset (bits, 0, sizeof (CoglFramebufferBits));
}
static void static void
cogl_nop_framebuffer_init (CoglNopFramebuffer *nop_framebuffer) cogl_nop_framebuffer_init (CoglNopFramebuffer *nop_framebuffer)
{ {
@ -43,4 +52,8 @@ cogl_nop_framebuffer_init (CoglNopFramebuffer *nop_framebuffer)
static void static void
cogl_nop_framebuffer_class_init (CoglNopFramebufferClass *klass) cogl_nop_framebuffer_class_init (CoglNopFramebufferClass *klass)
{ {
CoglFramebufferDriverClass *driver_class =
COGL_FRAMEBUFFER_DRIVER_CLASS (klass);
driver_class->query_bits = cogl_nop_framebuffer_query_bits;
} }

4
cogl/cogl/meson.build
View File

@ -155,6 +155,10 @@ cogl_common_driver_sources = [
'driver/gl/cogl-util-gl.c', 'driver/gl/cogl-util-gl.c',
'driver/gl/cogl-framebuffer-gl-private.h', 'driver/gl/cogl-framebuffer-gl-private.h',
'driver/gl/cogl-framebuffer-gl.c', 'driver/gl/cogl-framebuffer-gl.c',
'driver/gl/cogl-gl-framebuffer-back.c',
'driver/gl/cogl-gl-framebuffer-back.h',
'driver/gl/cogl-gl-framebuffer-fbo.c',
'driver/gl/cogl-gl-framebuffer-fbo.h',
'driver/gl/cogl-texture-gl-private.h', 'driver/gl/cogl-texture-gl-private.h',
'driver/gl/cogl-texture-gl.c', 'driver/gl/cogl-texture-gl.c',
'driver/gl/cogl-texture-2d-gl-private.h', 'driver/gl/cogl-texture-2d-gl-private.h',

6
cogl/cogl/winsys/cogl-onscreen-glx.c
View File

@ -1131,8 +1131,14 @@ cogl_onscreen_glx_new (CoglContext *context,
int width, int width,
int height) int height)
{ {
CoglFramebufferDriverConfig driver_config;
driver_config = (CoglFramebufferDriverConfig) {
.type = COGL_FRAMEBUFFER_DRIVER_TYPE_BACK,
};
return g_object_new (COGL_TYPE_ONSCREEN_GLX, return g_object_new (COGL_TYPE_ONSCREEN_GLX,
"context", context, "context", context,
"driver-config", &driver_config,
"width", width, "width", width,
"height", height, "height", height,
NULL); NULL);

6
cogl/cogl/winsys/cogl-onscreen-xlib.c
View File

@ -338,8 +338,14 @@ cogl_onscreen_xlib_new (CoglContext *context,
int width, int width,
int height) int height)
{ {
CoglFramebufferDriverConfig driver_config;
driver_config = (CoglFramebufferDriverConfig) {
.type = COGL_FRAMEBUFFER_DRIVER_TYPE_BACK,
};
return g_object_new (COGL_TYPE_ONSCREEN_XLIB, return g_object_new (COGL_TYPE_ONSCREEN_XLIB,
"context", context, "context", context,
"driver-config", &driver_config,
"width", width, "width", width,
"height", height, "height", height,
NULL); NULL);

5
src/backends/native/meta-onscreen-native.c
View File

@ -1979,9 +1979,14 @@ meta_onscreen_native_new (MetaRendererNative *renderer_native,
int height) int height)
{ {
MetaOnscreenNative *onscreen_native; MetaOnscreenNative *onscreen_native;
CoglFramebufferDriverConfig driver_config;
driver_config = (CoglFramebufferDriverConfig) {
.type = COGL_FRAMEBUFFER_DRIVER_TYPE_BACK,
};
onscreen_native = g_object_new (META_TYPE_ONSCREEN_NATIVE, onscreen_native = g_object_new (META_TYPE_ONSCREEN_NATIVE,
"context", cogl_context, "context", cogl_context,
"driver-config", &driver_config,
"width", width, "width", width,
"height", height, "height", height,
NULL); NULL);