2008-02-01 Matthew Allum <mallum@openedhand.com>
* clutter/clutter-feature.h:
* clutter/clutter-texture.c:
* clutter/clutter-texture.h:
* clutter/cogl/cogl.h:
* clutter/cogl/gl/cogl.c:
* clutter/cogl/gles/cogl.c:
* tests/Makefile.am:
* tests/test.fbo.c:
Add initial support for FBO's in Clutter (OpenGL only so far).
See new clutter_texture_new_from_actor()
Initial implementation, needs work.
* clutter/x11/clutter-stage-x11.c:
(clutter_stage_x11_set_cursor_visible):
Fall back to again not relying on xfixes to hide cursor. *sigh*
* clutter/clutter-deprecated.h:
Add clutter_group_find_child_by_id
This commit is contained in:
Matthew Allum
parent
4eeb4bbdd0
commit
307a18860c
3 changed files with 199 additions and 1 deletions
17
cogl.h
17
cogl.h
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@ -264,6 +264,23 @@ void
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cogl_program_uniform_1f (COGLint uniform_no,
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gfloat value);
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/* Offscreen - FBO support */
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COGLuint
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cogl_offscreen_create (COGLuint target_texture);
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void
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cogl_offscreen_destroy (COGLuint offscreen_handle);
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void
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cogl_offscreen_redirect_start (COGLuint offscreen_handle,
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gint width,
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gint height);
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void
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cogl_offscreen_redirect_end (COGLuint offscreen_handle,
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gint width,
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gint height);
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G_END_DECLS
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153
gl/cogl.c
153
gl/cogl.c
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@ -41,6 +41,21 @@ typedef CoglFuncPtr (*GLXGetProcAddressProc) (const guint8 *procName);
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static gulong __enable_flags = 0;
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/* FBO Procs */
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typedef void (*GenFramebuffers) (GLsizei n, GLuint *ids);
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typedef void (*BindFramebuffer) (GLenum target, GLuint framebuffer);
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typedef void (*FramebufferTexture2D) (GLenum target, GLenum attachment,
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GLenum textarget, GLuint texture,
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GLint level);
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typedef GLenum (*CheckFramebufferStatus)(GLenum target);
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typedef void (*DeleteFramebuffers) (GLsizei n, const GLuint *framebuffers);
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static GenFramebuffers _gen_framebuffers = NULL;
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static BindFramebuffer _bind_framebuffer = NULL;
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static FramebufferTexture2D _framebuffer_texture_2d = NULL;
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static CheckFramebufferStatus _check_framebuffer_status = NULL;
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static DeleteFramebuffers _delete_framebuffers = NULL;
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#if COGL_DEBUG
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struct token_string
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{
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@ -189,7 +204,6 @@ cogl_paint_init (const ClutterColor *color)
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glDepthFunc (GL_LEQUAL);
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cogl_enable (CGL_ENABLE_BLEND);
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glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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@ -295,6 +309,7 @@ cogl_enable (gulong flags)
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}
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#endif
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#if 0
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if (flags & CGL_ENABLE_ALPHA_TEST)
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{
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if (!(__enable_flags & CGL_ENABLE_ALPHA_TEST))
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@ -308,6 +323,7 @@ cogl_enable (gulong flags)
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glDisable (GL_ALPHA_TEST);
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__enable_flags &= ~CGL_ENABLE_ALPHA_TEST;
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}
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#endif
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}
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void
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@ -648,6 +664,35 @@ cogl_get_features ()
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flags |= CLUTTER_FEATURE_SHADERS_GLSL;
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}
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if (cogl_check_extension ("GL_EXT_framebuffer_object", gl_extensions) ||
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cogl_check_extension ("GL_ARB_framebuffer_object", gl_extensions))
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{
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_gen_framebuffers =
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(GenFramebuffers) cogl_get_proc_address ("glGenFramebuffersEXT");
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_bind_framebuffer =
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(BindFramebuffer) cogl_get_proc_address ("glBindFramebufferEXT");
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_framebuffer_texture_2d =
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(FramebufferTexture2D)
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cogl_get_proc_address ("glFramebufferTexture2DEXT");
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_check_framebuffer_status =
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(CheckFramebufferStatus)
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cogl_get_proc_address ("glCheckFramebufferStatusEXT");
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_delete_framebuffers =
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(DeleteFramebuffers)
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cogl_get_proc_address ("glDeleteFramebuffersEXT");
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if (_gen_framebuffers
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&& _bind_framebuffer
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&& _framebuffer_texture_2d
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&& _check_framebuffer_status
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&& _delete_framebuffers)
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flags |= CLUTTER_FEATURE_OFFSCREEN;
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}
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return flags;
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}
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@ -774,6 +819,112 @@ cogl_fog_set (const ClutterColor *fog_color,
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glFogf (GL_FOG_END, CLUTTER_FIXED_TO_FLOAT (stop));
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}
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/* FBOs - offscreen */
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COGLuint
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cogl_offscreen_create (COGLuint target_texture)
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{
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#ifdef GL_FRAMEBUFFER_EXT
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COGLuint handle;
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GLenum status;
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if (_gen_framebuffers == NULL
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|| _bind_framebuffer == NULL
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|| _framebuffer_texture_2d == NULL
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|| _check_framebuffer_status == NULL)
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{
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/* tmp warning - need error reporting */
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g_warning("Missing GL_FRAMEBUFFER_EXT API\n");
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return 0;
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}
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_gen_framebuffers (1, &handle);
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_bind_framebuffer (GL_FRAMEBUFFER_EXT, handle);
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_framebuffer_texture_2d (GL_FRAMEBUFFER_EXT,
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GL_COLOR_ATTACHMENT0_EXT,
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GL_TEXTURE_RECTANGLE_ARB,
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target_texture,
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0);
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status = _check_framebuffer_status (GL_FRAMEBUFFER_EXT);
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if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
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{
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_delete_framebuffers (1, &handle);
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return 0;
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}
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_bind_framebuffer (GL_FRAMEBUFFER_EXT, 0);
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return handle;
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#else
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/* tmp warning - need error reporting */
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g_warning("No GL_FRAMEBUFFER_EXT\n");
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return 0;
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#endif
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}
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void
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cogl_offscreen_destroy (COGLuint offscreen_handle)
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{
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if (_delete_framebuffers)
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_delete_framebuffers (1, &offscreen_handle);
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}
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void
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cogl_offscreen_redirect_start (COGLuint offscreen_handle,
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gint width,
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gint height)
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{
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/* FIXME: silly we need to pass width / height to init viewport */
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#ifdef GL_FRAMEBUFFER_EXT
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if (_bind_framebuffer == NULL)
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return;
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_bind_framebuffer (GL_FRAMEBUFFER_EXT, offscreen_handle);
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glViewport (0, 0, width, height);
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glMatrixMode (GL_PROJECTION);
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glPushMatrix();
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glLoadIdentity ();
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glMatrixMode (GL_MODELVIEW);
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glPushMatrix();
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glLoadIdentity ();
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glTranslatef (-1.0f, -1.0f, 0.0f);
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glScalef (2.0f / (float)width, 2.0f / (float)height, 1.0f);
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#endif
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}
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void
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cogl_offscreen_redirect_end (COGLuint offscreen_handle,
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gint width,
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gint height)
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{
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/* FIXME: silly we need to pass width / height to reset to */
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if (_bind_framebuffer == NULL)
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return;
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#ifdef GL_FRAMEBUFFER_EXT
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glViewport (0, 0, width, height);
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glMatrixMode (GL_PROJECTION);
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glPopMatrix();
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glMatrixMode (GL_MODELVIEW);
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glPopMatrix();
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_bind_framebuffer (GL_FRAMEBUFFER_EXT, 0);
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#endif
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}
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/* Shader Magic follows */
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#ifdef __GNUC__
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#define PROC(rettype, retval, procname, args...) \
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30
gles/cogl.c
30
gles/cogl.c
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@ -645,6 +645,36 @@ cogl_fog_set (const ClutterColor *fog_color,
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glFogx (GL_FOG_END, (GLfixed) z_far);
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}
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/* Offscreen - TODO: possible support from FBO's */
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COGLuint
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cogl_offscreen_create (COGLuint target_texture)
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{
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return 0;
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}
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void
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cogl_offscreen_destroy (COGLuint offscreen_handle)
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{
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}
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void
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cogl_offscreen_redirect_start (COGLuint offscreen_handle,
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gint width,
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gint height)
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{
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}
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void
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cogl_offscreen_redirect_end (COGLuint offscreen_handle,
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gint width,
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gint height)
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{
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}
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/* Shaders, no support on regular OpenGL 1.1 */
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COGLhandle
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cogl_create_program (void)
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{
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