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cogl: Add support for creating custom EGL based textures

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Add API to enable the caller to have a custom method for allocating an
external texture. This will enable the possibility for mutter to
generate a texture from for example an EGLStream without having to add
support for that in Cogl.

https://bugzilla.gnome.org/show_bug.cgi?id=773629
This commit is contained in:
Jonas Ådahl 2016-10-20 15:52:57 +08:00
parent 7c31fb2450
commit 1f0ce80fb4
9 changed files with 157 additions and 2 deletions
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1
cogl/cogl/cogl-context.h
View file

@ -262,6 +262,7 @@ typedef enum _CoglFeatureID
COGL_FEATURE_ID_PER_VERTEX_POINT_SIZE,
COGL_FEATURE_ID_TEXTURE_RG,
COGL_FEATURE_ID_BUFFER_AGE,
COGL_FEATURE_ID_TEXTURE_EGL_IMAGE_EXTERNAL,
/*< private >*/
_COGL_N_FEATURE_IDS /*< skip >*/

1
cogl/cogl/cogl-gles2-types.h
View file

@ -152,6 +152,7 @@ typedef long GLsizeiptr;
#define GL_POLYGON_OFFSET_FILL 0x8037
#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
#define GL_SAMPLE_COVERAGE 0x80A0
#define GL_TEXTURE_EXTERNAL_OES 0x8D65
/* ErrorCode */
#define GL_NO_ERROR 0

8
cogl/cogl/cogl-glsl-shader.c
View file

@ -111,6 +111,14 @@ _cogl_glsl_shader_set_source_with_boilerplate (CoglContext *ctx,
lengths[count++] = sizeof (texture_3d_extension) - 1;
}
if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_EGL_IMAGE_EXTERNAL))
{
static const char texture_3d_extension[] =
"#extension GL_OES_EGL_image_external : require\n";
strings[count] = texture_3d_extension;
lengths[count++] = sizeof (texture_3d_extension) - 1;
}
if (shader_gl_type == GL_VERTEX_SHADER)
{
strings[count] = vertex_boilerplate;

6
cogl/cogl/cogl-texture-2d-private.h
View file

@ -55,11 +55,17 @@ struct _CoglTexture2D
GLenum gl_internal_format;
/* The texture object number */
GLuint gl_texture;
GLenum gl_target;
GLenum gl_legacy_texobj_min_filter;
GLenum gl_legacy_texobj_mag_filter;
GLint gl_legacy_texobj_wrap_mode_s;
GLint gl_legacy_texobj_wrap_mode_t;
CoglTexturePixel first_pixel;
struct {
void *user_data;
GDestroyNotify destroy;
} egl_image_external;
};
CoglTexture2D *

4
cogl/cogl/cogl-texture-2d.c
View file

@ -110,6 +110,8 @@ _cogl_texture_2d_create_base (CoglContext *ctx,
tex_2d->mipmaps_dirty = TRUE;
tex_2d->auto_mipmap = TRUE;
tex_2d->gl_target = GL_TEXTURE_2D;
tex_2d->is_foreign = FALSE;
ctx->driver_vtable->texture_2d_init (tex_2d);
@ -557,7 +559,7 @@ _cogl_texture_2d_get_gl_texture (CoglTexture *tex,
GLuint handle;
if (out_gl_target)
*out_gl_target = GL_TEXTURE_2D;
*out_gl_target = tex_2d->gl_target;
handle = ctx->driver_vtable->texture_2d_get_gl_handle (tex_2d);

21
cogl/cogl/cogl-texture-2d.h
View file

@ -242,6 +242,27 @@ cogl_egl_texture_2d_new_from_image (CoglContext *ctx,
CoglPixelFormat format,
EGLImageKHR image,
CoglError **error);
typedef gboolean (*CoglTexture2DEGLImageExternalAlloc) (CoglTexture2D *tex_2d,
gpointer user_data,
GError **error);
CoglTexture2D *
cogl_texture_2d_new_from_egl_image_external (CoglContext *ctx,
int width,
int height,
CoglTexture2DEGLImageExternalAlloc alloc,
gpointer user_data,
GDestroyNotify destroy,
CoglError **error);
void
cogl_texture_2d_egl_image_external_bind (CoglTexture2D *tex_2d);
void
cogl_texture_2d_egl_image_external_alloc_finish (CoglTexture2D *tex_2d,
void *user_data,
GDestroyNotify destroy);
#endif
COGL_END_DECLS

12
cogl/cogl/cogl-texture-private.h
View file

@ -37,6 +37,7 @@
#include "cogl-spans.h"
#include "cogl-meta-texture.h"
#include "cogl-framebuffer.h"
#include "cogl-texture-2d.h"
#ifdef COGL_HAS_EGL_SUPPORT
#include "cogl-egl-defines.h"
@ -154,7 +155,8 @@ typedef enum _CoglTextureSoureType {
COGL_TEXTURE_SOURCE_TYPE_SIZED = 1,
COGL_TEXTURE_SOURCE_TYPE_BITMAP,
COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE,
COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN
COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN,
COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE_EXTERNAL
} CoglTextureSourceType;
typedef struct _CoglTextureLoader
@ -179,6 +181,14 @@ typedef struct _CoglTextureLoader
int height;
CoglPixelFormat format;
} egl_image;
#endif
#if defined (COGL_HAS_EGL_SUPPORT)
struct {
int width;
int height;
CoglTexture2DEGLImageExternalAlloc alloc;
CoglPixelFormat format;
} egl_image_external;
#endif
struct {
int width;

1
cogl/cogl/cogl-texture.c
View file

@ -160,6 +160,7 @@ _cogl_texture_free_loader (CoglTexture *texture)
case COGL_TEXTURE_SOURCE_TYPE_SIZED:
case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE:
case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE_EXTERNAL:
break;
case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
cogl_object_unref (loader->src.bitmap.bitmap);

105
cogl/cogl/driver/gl/cogl-texture-2d-gl.c
View file

@ -46,11 +46,21 @@
#include "cogl-error-private.h"
#include "cogl-util-gl-private.h"
#if defined (COGL_HAS_EGL_SUPPORT)
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#endif
void
_cogl_texture_2d_gl_free (CoglTexture2D *tex_2d)
{
if (!tex_2d->is_foreign && tex_2d->gl_texture)
_cogl_delete_gl_texture (tex_2d->gl_texture);
#if defined (COGL_HAS_EGL_SUPPORT)
g_clear_pointer (&tex_2d->egl_image_external.user_data,
tex_2d->egl_image_external.destroy);
#endif
}
CoglBool
@ -101,6 +111,9 @@ _cogl_texture_2d_gl_init (CoglTexture2D *tex_2d)
/* Wrap mode not yet set */
tex_2d->gl_legacy_texobj_wrap_mode_s = GL_FALSE;
tex_2d->gl_legacy_texobj_wrap_mode_t = GL_FALSE;
tex_2d->egl_image_external.user_data = NULL;
tex_2d->egl_image_external.destroy = NULL;
}
static CoglBool
@ -439,6 +452,96 @@ allocate_from_gl_foreign (CoglTexture2D *tex_2d,
return TRUE;
}
#if defined (COGL_HAS_EGL_SUPPORT)
static CoglBool
allocate_custom_egl_image_external (CoglTexture2D *tex_2d,
CoglTextureLoader *loader,
CoglError **error)
{
CoglTexture *tex = COGL_TEXTURE (tex_2d);
CoglContext *ctx = tex->context;
CoglPixelFormat internal_format = loader->src.egl_image_external.format;
_cogl_gl_util_clear_gl_errors (ctx);
GE (ctx, glActiveTexture (GL_TEXTURE0));
GE (ctx, glGenTextures (1, &tex_2d->gl_texture));
GE (ctx, glBindTexture (GL_TEXTURE_EXTERNAL_OES,
tex_2d->gl_texture));
if (_cogl_gl_util_get_error (ctx) != GL_NO_ERROR)
{
_cogl_set_error (error,
COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_BAD_PARAMETER,
"Could not create a CoglTexture2D from a given "
"EGLImage");
GE( ctx, glDeleteTextures (1, &tex_2d->gl_texture) );
return FALSE;
}
GE (ctx, glTexParameteri(GL_TEXTURE_EXTERNAL_OES,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
GE (ctx, glTexParameteri(GL_TEXTURE_EXTERNAL_OES,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
if (!loader->src.egl_image_external.alloc (tex_2d,
tex_2d->egl_image_external.user_data,
error))
{
GE (ctx, glBindTexture (GL_TEXTURE_EXTERNAL_OES, 0));
GE (ctx, glDeleteTextures (1, &tex_2d->gl_texture));
return FALSE;
}
GE (ctx, glBindTexture (GL_TEXTURE_EXTERNAL_OES, 0));
tex_2d->internal_format = internal_format;
tex_2d->gl_target = GL_TEXTURE_EXTERNAL_OES;
return TRUE;
}
CoglTexture2D *
cogl_texture_2d_new_from_egl_image_external (CoglContext *ctx,
int width,
int height,
CoglTexture2DEGLImageExternalAlloc alloc,
gpointer user_data,
GDestroyNotify destroy,
CoglError **error)
{
CoglTextureLoader *loader;
CoglTexture2D *tex_2d;
CoglPixelFormat internal_format = COGL_PIXEL_FORMAT_ANY;
_COGL_RETURN_VAL_IF_FAIL (_cogl_context_get_winsys (ctx)->constraints &
COGL_RENDERER_CONSTRAINT_USES_EGL,
NULL);
_COGL_RETURN_VAL_IF_FAIL (cogl_has_feature (ctx,
COGL_FEATURE_ID_TEXTURE_EGL_IMAGE_EXTERNAL),
NULL);
loader = _cogl_texture_create_loader ();
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE_EXTERNAL;
loader->src.egl_image_external.width = width;
loader->src.egl_image_external.height = height;
loader->src.egl_image_external.alloc = alloc;
loader->src.egl_image_external.format = internal_format;
tex_2d = _cogl_texture_2d_create_base (ctx, width, height,
internal_format, loader);
tex_2d->egl_image_external.user_data = user_data;
tex_2d->egl_image_external.destroy = destroy;
return tex_2d;
}
#endif /* defined (COGL_HAS_EGL_SUPPORT) */
CoglBool
_cogl_texture_2d_gl_allocate (CoglTexture *tex,
CoglError **error)
@ -462,6 +565,8 @@ _cogl_texture_2d_gl_allocate (CoglTexture *tex,
#endif
case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
return allocate_from_gl_foreign (tex_2d, loader, error);
case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE_EXTERNAL:
return allocate_custom_egl_image_external (tex_2d, loader, error);
}
g_return_val_if_reached (FALSE);