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gl driver: Only support one fbo per texture

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This commit is contained in:
Timm Bäder 2017-12-28 21:21:09 +01:00
parent 352590cf9f
commit c9656e2864
1 changed files with 30 additions and 31 deletions
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61
gsk/gl/gskgldriver.c
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@ -9,23 +9,23 @@
#include <gdk/gdk.h>
#include <epoxy/gl.h>
typedef struct {
GLuint fbo_id;
GLuint depth_stencil_id;
} Fbo;
typedef struct {
GLuint texture_id;
int width;
int height;
GLuint min_filter;
GLuint mag_filter;
GArray *fbos;
Fbo fbo;
GdkTexture *user;
guint in_use : 1;
guint permanent : 1;
} Texture;
typedef struct {
GLuint fbo_id;
GLuint depth_stencil_id;
} Fbo;
struct _GskGLDriver
{
GObject parent_instance;
@ -68,6 +68,15 @@ texture_new (void)
return g_slice_new0 (Texture);
}
static inline void
fbo_clear (const Fbo *f)
{
if (f->depth_stencil_id != 0)
glDeleteRenderbuffers (1, &f->depth_stencil_id);
glDeleteFramebuffers (1, &f->fbo_id);
}
static void
texture_free (gpointer data)
{
@ -76,21 +85,13 @@ texture_free (gpointer data)
if (t->user)
gdk_texture_clear_render_data (t->user);
g_clear_pointer (&t->fbos, g_array_unref);
if (t->fbo.fbo_id != 0)
fbo_clear (&t->fbo);
glDeleteTextures (1, &t->texture_id);
g_slice_free (Texture, t);
}
static void
fbo_clear (gpointer data)
{
Fbo *f = data;
if (f->depth_stencil_id != 0)
glDeleteRenderbuffers (1, &f->depth_stencil_id);
glDeleteFramebuffers (1, &f->fbo_id);
}
static void
gsk_gl_driver_finalize (GObject *gobject)
@ -262,7 +263,6 @@ gsk_gl_driver_collect_textures (GskGLDriver *driver)
GHashTableIter iter;
gpointer value_p = NULL;
int old_size;
/*return;*/
g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), 0);
g_return_val_if_fail (!driver->in_frame, 0);
@ -280,7 +280,12 @@ gsk_gl_driver_collect_textures (GskGLDriver *driver)
if (t->in_use)
{
t->in_use = FALSE;
g_clear_pointer (&t->fbos, g_array_unref);
if (t->fbo.fbo_id != 0)
{
fbo_clear (&t->fbo);
t->fbo.fbo_id = 0;
}
}
else
g_hash_table_iter_remove (&iter);
@ -321,10 +326,10 @@ gsk_gl_driver_get_fbo (GskGLDriver *driver,
{
Texture *t = gsk_gl_driver_get_texture (driver, texture_id);
if (t->fbos == NULL)
if (t->fbo.fbo_id == 0)
return &driver->default_fbo;
return &g_array_index (t->fbos, Fbo, 0);
return &t->fbo;
}
static Texture *
@ -478,7 +483,6 @@ gsk_gl_driver_create_render_target (GskGLDriver *driver,
{
GLuint fbo_id, depth_stencil_buffer_id;
Texture *t;
Fbo f;
g_return_val_if_fail (GSK_IS_GL_DRIVER (driver), -1);
g_return_val_if_fail (driver->in_frame, -1);
@ -487,11 +491,8 @@ gsk_gl_driver_create_render_target (GskGLDriver *driver,
if (t == NULL)
return -1;
if (t->fbos == NULL)
{
t->fbos = g_array_new (FALSE, FALSE, sizeof (Fbo));
g_array_set_clear_func (t->fbos, fbo_clear);
}
if (t->fbo.fbo_id != 0)
fbo_clear (&t->fbo);
glGenFramebuffers (1, &fbo_id);
glBindFramebuffer (GL_FRAMEBUFFER, fbo_id);
@ -520,10 +521,8 @@ gsk_gl_driver_create_render_target (GskGLDriver *driver,
GL_RENDERBUFFER, depth_stencil_buffer_id);
}
f.fbo_id = fbo_id;
f.depth_stencil_id = depth_stencil_buffer_id;
g_array_append_val (t->fbos, f);
t->fbo.fbo_id = fbo_id;
t->fbo.depth_stencil_id = depth_stencil_buffer_id;
g_assert_cmpint (glCheckFramebufferStatus (GL_FRAMEBUFFER), ==, GL_FRAMEBUFFER_COMPLETE);
glBindFramebuffer (GL_FRAMEBUFFER, driver->default_fbo.fbo_id);