Module: Mesa Branch: master Commit: 303fb5881c36b8c1270f3c8071705eea336c341b URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=303fb5881c36b8c1270f3c8071705eea336c341b
Author: Francisco Jerez <[email protected]> Date: Tue Jul 5 23:21:21 2016 -0700 mesa: Add blend barrier entry point and driver hook. Both MESA_shader_framebuffer_fetch_non_coherent and the non-coherent variant of KHR_blend_equation_advanced will use this driver hook to request coherency between framebuffer reads and writes. This intentionally doesn't hook up glBlendBarrierMESA to the dispatch layer since the extension isn't exposed to applications yet, see [1] for more details. [1] https://lists.freedesktop.org/archives/mesa-dev/2016-July/124028.html Reviewed-by: Kenneth Graunke <[email protected]> --- src/mesa/main/barrier.c | 14 ++++++++++++++ src/mesa/main/barrier.h | 3 +++ src/mesa/main/dd.h | 12 ++++++++++++ 3 files changed, 29 insertions(+) diff --git a/src/mesa/main/barrier.c b/src/mesa/main/barrier.c index 7ae8fc6..42a5e0f 100644 --- a/src/mesa/main/barrier.c +++ b/src/mesa/main/barrier.c @@ -108,3 +108,17 @@ _mesa_MemoryBarrierByRegion(GLbitfield barriers) ctx->Driver.MemoryBarrier(ctx, barriers); } } + +void GLAPIENTRY +_mesa_BlendBarrierMESA(void) +{ + GET_CURRENT_CONTEXT(ctx); + + if (!ctx->Extensions.MESA_shader_framebuffer_fetch_non_coherent) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlendBarrier(not supported)"); + return; + } + + ctx->Driver.BlendBarrier(ctx); +} diff --git a/src/mesa/main/barrier.h b/src/mesa/main/barrier.h index 8eee583..21dce90 100644 --- a/src/mesa/main/barrier.h +++ b/src/mesa/main/barrier.h @@ -47,4 +47,7 @@ _mesa_MemoryBarrier(GLbitfield barriers); void GLAPIENTRY _mesa_MemoryBarrierByRegion(GLbitfield barriers); +void GLAPIENTRY +_mesa_BlendBarrierMESA(void); + #endif /* BARRIER_H */ diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h index a3dc191..257dc10 100644 --- a/src/mesa/main/dd.h +++ b/src/mesa/main/dd.h @@ -958,6 +958,18 @@ struct dd_function_table { /** @} */ /** + * GL_MESA_shader_framebuffer_fetch_non_coherent rendering barrier. + * + * On return from this function any framebuffer contents written by + * previous draw commands are guaranteed to be visible from subsequent + * fragment shader invocations using the + * MESA_shader_framebuffer_fetch_non_coherent interface. + */ + /** @{ */ + void (*BlendBarrier)(struct gl_context *ctx); + /** @} */ + + /** * \name GL_ARB_compute_shader interface */ /*@{*/ _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
