diff options
Diffstat (limited to 'video/out/gpu/ra.h')
| -rw-r--r-- | video/out/gpu/ra.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/video/out/gpu/ra.h b/video/out/gpu/ra.h index f1037e45c3..05a7c54a66 100644 --- a/video/out/gpu/ra.h +++ b/video/out/gpu/ra.h @@ -110,6 +110,7 @@ struct ra_tex_params { bool blit_src; // must be usable as a blit source bool blit_dst; // must be usable as a blit destination bool host_mutable; // texture may be updated with tex_upload + bool downloadable; // texture can be read with tex_download // When used as render source texture. bool src_linear; // if false, use nearest sampling (whether this can // be true depends on ra_format.linear_filter) @@ -151,6 +152,13 @@ struct ra_tex_upload_params { ptrdiff_t stride; // The size of a horizontal line in bytes (*not* texels!) }; +struct ra_tex_download_params { + struct ra_tex *tex; // Texture to download from + // Downloading directly (set by caller, data written to by callee): + void *dst; // Address of data (packed with no alignment) + ptrdiff_t stride; // The size of a horizontal line in bytes (*not* texels!) +}; + // Buffer usage type. This restricts what types of operations may be performed // on a buffer. enum ra_buf_type { @@ -379,6 +387,10 @@ struct ra_fns { // Returns whether successful. bool (*tex_upload)(struct ra *ra, const struct ra_tex_upload_params *params); + // Copy data from the texture to memory. ra_tex_params.downloadable must + // have been set to true on texture creation. + bool (*tex_download)(struct ra *ra, struct ra_tex_download_params *params); + // Create a buffer. This can be used as a persistently mapped buffer, // a uniform buffer, a shader storage buffer or possibly others. // Not all usage types must be supported; may return NULL if unavailable. |