diff options
| author | Ian Romanick <ian.d.romanick@intel.com> | 2015-12-18 12:25:53 +0000 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2015-12-18 12:26:26 +0000 |
| commit | b26945c2ed0007e62dd5f439c6c71957e69b828a (patch) | |
| tree | dc80be4c749e9a9ac9c2e37232e552a3daba93bb | |
| parent | 646be4a262bca3650418cd6e411a01fcc0a7e1b9 (diff) | |
meta/generate_mipmap: Work-around GLES 1.x problem with GL_DRAW_FRAMEBUFFER
GL_DRAW_FRAMEBUFFER does not exist in OpenGL ES 1.x, and since
_mesa_meta_begin hasn't been called yet, we have to work-around API
difficulties. The whole reason that GL_DRAW_FRAMEBUFFER is used instead
of GL_FRAMEBUFFER is that the read framebuffer may be different. This
is moot in OpenGL ES 1.x.
I have another patch series that would also fix this (by removing the
calls to _mesa_BindFramebuffer and friends), but it's not quite ready
yet... and I think it may be a bit heavy for some stable branches.
Consider this a stop-gap fix.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93215
Cc: "11.0 11.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
(cherry picked from commit 96dc732ed81f48d8bbc7aa6fb4d9c2833b691189)
| -rw-r--r-- | src/mesa/drivers/common/meta_generate_mipmap.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/src/mesa/drivers/common/meta_generate_mipmap.c b/src/mesa/drivers/common/meta_generate_mipmap.c index 555d3e62dc4..b0e2f7e5a5d 100644 --- a/src/mesa/drivers/common/meta_generate_mipmap.c +++ b/src/mesa/drivers/common/meta_generate_mipmap.c @@ -62,6 +62,15 @@ fallback_required(struct gl_context *ctx, GLenum target, GLuint srcLevel; GLenum status; + /* GL_DRAW_FRAMEBUFFER does not exist in OpenGL ES 1.x, and since + * _mesa_meta_begin hasn't been called yet, we have to work-around API + * difficulties. The whole reason that GL_DRAW_FRAMEBUFFER is used instead + * of GL_FRAMEBUFFER is that the read framebuffer may be different. This + * is moot in OpenGL ES 1.x. + */ + const GLenum fbo_target = ctx->API == API_OPENGLES + ? GL_FRAMEBUFFER : GL_DRAW_FRAMEBUFFER; + /* check for fallbacks */ if (target == GL_TEXTURE_3D) { _mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH, @@ -102,13 +111,13 @@ fallback_required(struct gl_context *ctx, GLenum target, */ if (!mipmap->FBO) _mesa_GenFramebuffers(1, &mipmap->FBO); - _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, mipmap->FBO); + _mesa_BindFramebuffer(fbo_target, mipmap->FBO); - _mesa_meta_bind_fbo_image(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, baseImage, 0); + _mesa_meta_bind_fbo_image(fbo_target, GL_COLOR_ATTACHMENT0, baseImage, 0); - status = _mesa_CheckFramebufferStatus(GL_DRAW_FRAMEBUFFER); + status = _mesa_CheckFramebufferStatus(fbo_target); - _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER, fboSave); + _mesa_BindFramebuffer(fbo_target, fboSave); if (status != GL_FRAMEBUFFER_COMPLETE_EXT) { _mesa_perf_debug(ctx, MESA_DEBUG_SEVERITY_HIGH, |