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| author | Damien Lespiau <damien.lespiau@intel.com> | 2012-05-23 18:19:29 +0100 |
|---|---|---|
| committer | Damien Lespiau <damien.lespiau@intel.com> | 2012-07-12 17:13:51 +0100 |
| commit | 5bc56e9f30cdf8cfd62a975c3d20c9463aad76fe (patch) | |
| tree | 7b2defa496dc92a9957c4070a31cd85c0ad31c57 /cogl/driver/gles/cogl-gles.c | |
| parent | ff3707e3c065812960680b80a6bc1963d14b3a94 (diff) | |
| download | cogl-5bc56e9f30cdf8cfd62a975c3d20c9463aad76fe.tar.gz | |
Support retrieving depth textures from framebufferswip/depth-texture
This commit introduces two new funtions on framebuffers to be able to
retrieve the depth buffer as a texture for further usage, say, to
implement shadow mapping.
The proposed API works as follow:
* Before the framebuffer is allocated, you can request that a depth
texture is created with cogl_framebuffer_enable_depth_texture()
* cogl_framebuffer_get_depth_texture() can then be used to grab a
CoglTexture
Diffstat (limited to 'cogl/driver/gles/cogl-gles.c')
| -rw-r--r-- | cogl/driver/gles/cogl-gles.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/cogl/driver/gles/cogl-gles.c b/cogl/driver/gles/cogl-gles.c index 9e46d12d..8f1e91db 100644 --- a/cogl/driver/gles/cogl-gles.c +++ b/cogl/driver/gles/cogl-gles.c @@ -33,6 +33,13 @@ #include "cogl-renderer-private.h" #include "cogl-private.h" +#ifndef GL_UNSIGNED_INT_24_8 +#define GL_UNSIGNED_INT_24_8 0x84FA +#endif +#ifndef GL_DEPTH_STENCIL +#define GL_DEPTH_STENCIL 0x84F9 +#endif + static CoglBool _cogl_driver_pixel_format_from_gl_internal (CoglContext *context, GLenum gl_int_format, @@ -137,6 +144,35 @@ _cogl_driver_pixel_format_to_gl (CoglContext *context, gltype = GL_UNSIGNED_SHORT_5_5_5_1; break; + case COGL_PIXEL_FORMAT_DEPTH_ANY: + glintformat = GL_DEPTH_COMPONENT; + glformat = GL_DEPTH_COMPONENT; + gltype = GL_UNSIGNED_BYTE; + break; + case COGL_PIXEL_FORMAT_DEPTH_16: + glintformat = GL_DEPTH_COMPONENT; + glformat = GL_DEPTH_COMPONENT; + gltype = GL_UNSIGNED_SHORT; + break; + case COGL_PIXEL_FORMAT_DEPTH_24: + glintformat = GL_DEPTH_COMPONENT; + glformat = GL_DEPTH_COMPONENT; + gltype = GL_UNSIGNED_INT; + break; + case COGL_PIXEL_FORMAT_DEPTH_32: + glintformat = GL_DEPTH_COMPONENT; + glformat = GL_DEPTH_COMPONENT; + gltype = GL_UNSIGNED_INT; + break; + + case COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8: + /* GLES only supports GL_DEPTH_STENCIL (not GL_DEPTH24_STENCIL8) + * as the internal format */ + glintformat = GL_DEPTH_STENCIL; + glformat = GL_DEPTH_STENCIL; + gltype = GL_UNSIGNED_INT_24_8; + break; + case COGL_PIXEL_FORMAT_ANY: case COGL_PIXEL_FORMAT_YUV: g_assert_not_reached (); @@ -247,6 +283,12 @@ _cogl_driver_update_features (CoglContext *context, COGL_FEATURE_ID_UNSIGNED_INT_INDICES, TRUE); } + if (_cogl_check_extension ("GL_OES_depth_texture", gl_extensions)) + { + flags |= COGL_FEATURE_DEPTH_TEXTURE; + COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_TEXTURE, TRUE); + } + if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions)) { flags |= (COGL_FEATURE_TEXTURE_NPOT | |