diff options
Diffstat (limited to 'cogl/cogl-framebuffer.c')
| -rw-r--r-- | cogl/cogl-framebuffer.c | 156 |
1 files changed, 150 insertions, 6 deletions
diff --git a/cogl/cogl-framebuffer.c b/cogl/cogl-framebuffer.c index 334f02b9..1fbe1905 100644 --- a/cogl/cogl-framebuffer.c +++ b/cogl/cogl-framebuffer.c @@ -820,6 +820,88 @@ _cogl_offscreen_free (CoglOffscreen *offscreen) g_free (offscreen); } +static CoglTexture * +create_depth_texture (CoglContext *ctx, + int width, + int height) +{ + CoglPixelFormat format; + CoglTexture2D *depth_texture; + + /* We really have two cases that we support right now: + * - we have the depth_texture extension and then create a depth_stencil + * texture + * - we create a 16+ bits depth texture + */ + if (ctx->private_feature_flags & + COGL_PRIVATE_FEATURE_EXT_PACKED_DEPTH_STENCIL) + { + format = COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8; + } + else if (ctx->private_feature_flags & + COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL) + { + format = COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8; + } + else + { + format = COGL_PIXEL_FORMAT_DEPTH_16; + } + + depth_texture = cogl_texture_2d_new_with_size (ctx, + width, height, + format, + NULL); + + return COGL_TEXTURE (depth_texture); +} + +static CoglTexture * +attach_depth_texture (CoglContext *ctx, + CoglTexture *depth_texture, + CoglOffscreenAllocateFlags flags) +{ + GLuint tex_gl_handle; + GLenum tex_gl_target; + + if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH24_STENCIL8) + { + /* attach a GL_DEPTH24_STENCIL8 texture to the GL_DEPTH_ATTACHMENT and + * GL_STENCIL_ATTACHMENT attachement points */ + g_assert (cogl_texture_get_format (depth_texture) == + COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8); + + cogl_texture_get_gl_texture (depth_texture, + &tex_gl_handle, &tex_gl_target); + + GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, + GL_DEPTH_ATTACHMENT, + tex_gl_target, tex_gl_handle, + 0)); + GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, + GL_STENCIL_ATTACHMENT, + tex_gl_target, tex_gl_handle, + 0)); + } + else if (flags & COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH) + { + /* attach a newly created GL_DEPTH_COMPONENT16 texture to the + * GL_DEPTH_ATTACHMENT attachement point */ + g_assert (cogl_texture_get_format (depth_texture) == + COGL_PIXEL_FORMAT_DEPTH_16); + + cogl_texture_get_gl_texture (COGL_TEXTURE (depth_texture), + &tex_gl_handle, &tex_gl_target); + + GE (ctx, glFramebufferTexture2D (GL_FRAMEBUFFER, + GL_DEPTH_ATTACHMENT, + tex_gl_target, tex_gl_handle, + 0)); + } + + return COGL_TEXTURE (depth_texture); +} + static GList * try_creating_renderbuffers (CoglContext *ctx, int width, @@ -918,6 +1000,7 @@ try_creating_fbo (CoglContext *ctx, int texture_level, int texture_level_width, int texture_level_height, + CoglTexture *depth_texture, CoglFramebufferConfig *config, CoglOffscreenAllocateFlags flags, CoglGLFramebuffer *gl_framebuffer) @@ -968,12 +1051,31 @@ try_creating_fbo (CoglContext *ctx, tex_gl_target, tex_gl_handle, texture_level)); - gl_framebuffer->renderbuffers = - try_creating_renderbuffers (ctx, - texture_level_width, - texture_level_height, - flags, - n_samples); + /* attach either a depth/stencil texture, a depth texture or render buffers + * depending on what we've been asked to provide */ + + if (depth_texture && + flags & (COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH24_STENCIL8 | + COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH)) + { + attach_depth_texture (ctx, depth_texture, flags); + + /* Let's clear the flags that are now fulfilled as we might need to + * create renderbuffers (for the ALLOCATE_FLAG_DEPTH | + * ALLOCATE_FLAG_STENCIL case) */ + flags &= ~(COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH24_STENCIL8 | + COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH); + } + + if (flags) + { + gl_framebuffer->renderbuffers = + try_creating_renderbuffers (ctx, + texture_level_width, + texture_level_height, + flags, + n_samples); + } /* Make sure it's complete */ status = ctx->glCheckFramebufferStatus (GL_FRAMEBUFFER); @@ -1012,6 +1114,7 @@ _cogl_framebuffer_try_creating_gl_fbo (CoglContext *ctx, int texture_level, int texture_level_width, int texture_level_height, + CoglTexture *depth_texture, CoglFramebufferConfig *config, CoglOffscreenAllocateFlags flags, CoglGLFramebuffer *gl_framebuffer) @@ -1021,6 +1124,7 @@ _cogl_framebuffer_try_creating_gl_fbo (CoglContext *ctx, texture_level, texture_level_width, texture_level_height, + depth_texture, config, flags, gl_framebuffer); @@ -1053,6 +1157,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = 0, gl_framebuffer)) || @@ -1063,6 +1168,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = ctx->last_offscreen_allocate_flags, gl_framebuffer)) || @@ -1074,6 +1180,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH24_STENCIL8, gl_framebuffer)) || @@ -1085,6 +1192,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH24_STENCIL8, gl_framebuffer)) || @@ -1094,6 +1202,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH | COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL, @@ -1104,6 +1213,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = COGL_OFFSCREEN_ALLOCATE_FLAG_STENCIL, gl_framebuffer) || @@ -1113,6 +1223,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = COGL_OFFSCREEN_ALLOCATE_FLAG_DEPTH, gl_framebuffer) || @@ -1122,6 +1233,7 @@ _cogl_offscreen_allocate (CoglOffscreen *offscreen, offscreen->texture_level, offscreen->texture_level_width, offscreen->texture_level_height, + offscreen->depth_texture, &fb->config, flags = 0, gl_framebuffer)) @@ -1904,6 +2016,38 @@ cogl_framebuffer_get_color_format (CoglFramebuffer *framebuffer) return framebuffer->format; } +void +cogl_framebuffer_enable_depth_texture (CoglFramebuffer *framebuffer, + CoglBool enabled) +{ + CoglOffscreen *offscreen; + + _COGL_GET_CONTEXT (ctx, NO_RETVAL); + + _COGL_RETURN_IF_FAIL (!framebuffer->allocated); + _COGL_RETURN_IF_FAIL (cogl_is_offscreen (framebuffer)); + + offscreen = COGL_OFFSCREEN (framebuffer); + if (offscreen->depth_texture != NULL) + return; + + offscreen->depth_texture = + create_depth_texture (ctx, + offscreen->texture_level_width, + offscreen->texture_level_height); + + if (offscreen->depth_texture) + _cogl_texture_associate_framebuffer (offscreen->depth_texture, framebuffer); +} + +CoglTexture * +cogl_framebuffer_get_depth_texture (CoglFramebuffer *framebuffer) +{ + _COGL_RETURN_VAL_IF_FAIL (cogl_is_offscreen (framebuffer), NULL); + + return COGL_OFFSCREEN(framebuffer)->depth_texture; +} + int cogl_framebuffer_get_samples_per_pixel (CoglFramebuffer *framebuffer) { |