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authorBrian Paul <[email protected]>2009-02-27 09:43:58 -0700
committerBrian Paul <[email protected]>2009-02-27 10:08:46 -0700
commit5fc74734d92f7e7ff3df693254986ba5d2b5e653 (patch)
treea26852f4cd19a89b8579aea4df6c59d11b34d9d4 /src/mesa/state_tracker
parentb747e1dec4a2999412ee25371994a07a4bed900e (diff)
gallium: add st_validate_framebuffer() driver function
Gallium only supports combined depth/stencil buffers, not separate ones. If the user tries to create create a FBO with separate depth/stencil renderbuffers mark the FBO as unsupported.
Diffstat (limited to 'src/mesa/state_tracker')
-rw-r--r--src/mesa/state_tracker/st_cb_fbo.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_cb_fbo.c b/src/mesa/state_tracker/st_cb_fbo.c
index 5cc6960c064..15bd6fee052 100644
--- a/src/mesa/state_tracker/st_cb_fbo.c
+++ b/src/mesa/state_tracker/st_cb_fbo.c
@@ -439,6 +439,25 @@ st_finish_render_texture(GLcontext *ctx,
}
+/**
+ * Check that the framebuffer configuration is valid in terms of what
+ * the driver can support.
+ *
+ * For Gallium we only supports combined Z+stencil, not separate buffers.
+ */
+static void
+st_validate_framebuffer(GLcontext *ctx, struct gl_framebuffer *fb)
+{
+ const struct gl_renderbuffer *depthRb =
+ fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+ const struct gl_renderbuffer *stencilRb =
+ fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+
+ if (stencilRb && depthRb && stencilRb != depthRb) {
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED_EXT;
+ }
+}
+
void st_init_fbo_functions(struct dd_function_table *functions)
{
@@ -448,6 +467,7 @@ void st_init_fbo_functions(struct dd_function_table *functions)
functions->FramebufferRenderbuffer = st_framebuffer_renderbuffer;
functions->RenderTexture = st_render_texture;
functions->FinishRenderTexture = st_finish_render_texture;
+ functions->ValidateFramebuffer = st_validate_framebuffer;
/* no longer needed by core Mesa, drivers handle resizes...
functions->ResizeBuffers = st_resize_buffers;
*/