mesa: use accessors for struct gl_debug_state

When GL_DEBUG_OUTPUT_SYNCHRONOUS is GL_TRUE, drivers are allowed to log debug
messages from other threads.  That requires gl_debug_state to be protected by
a mutex, even when it is a context state.  While we do not spawn threads in
Mesa yet, this commit makes it easier to do when we want to.

Since the definition of struct gl_debug_state is no longer needed by the rest
of the driver, move it to main/errors.c.  This should make it even harder to
use the struct incorrectly.

v2: add comments for the accessors

Signed-off-by: Chia-I Wu <olv@lunarg.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 5 insertions, 30 deletions

diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index edd4751..0f3bcf0 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -368,26 +368,11 @@ _mesa_set_enable(struct gl_context *ctx, GLenum cap, GLboolean state)
          ctx->Depth.Test = state;
          break;
       case GL_DEBUG_OUTPUT:
-         if (!_mesa_is_desktop_gl(ctx)) {
-            goto invalid_enum_error;
-         }
-         else {
-            struct gl_debug_state *debug = _mesa_get_debug_state(ctx);
-            if (debug) {
-               debug->DebugOutput = state;
-            }
-         }
-         break;
       case GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB:
-         if (!_mesa_is_desktop_gl(ctx)) {
+         if (!_mesa_is_desktop_gl(ctx))
             goto invalid_enum_error;
-         }
-         else {
-            struct gl_debug_state *debug = _mesa_get_debug_state(ctx);
-            if (debug) {
-               debug->SyncOutput = state;
-            }
-         }
+         else
+            _mesa_set_debug_state_int(ctx, cap, state);
          break;
       case GL_DITHER:
          if (ctx->Color.DitherFlag == state)
@@ -1239,21 +1224,11 @@ _mesa_IsEnabled( GLenum cap )
       case GL_CULL_FACE:
          return ctx->Polygon.CullFlag;
       case GL_DEBUG_OUTPUT:
-         if (!_mesa_is_desktop_gl(ctx))
-            goto invalid_enum_error;
-         if (ctx->Debug) {
-            return ctx->Debug->DebugOutput;
-         } else {
-            return GL_FALSE;
-         }
       case GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB:
          if (!_mesa_is_desktop_gl(ctx))
             goto invalid_enum_error;
-         if (ctx->Debug) {
-            return ctx->Debug->SyncOutput;
-         } else {
-            return GL_FALSE;
-         }
+         else
+            return (GLboolean) _mesa_get_debug_state_int(ctx, cap);
       case GL_DEPTH_TEST:
          return ctx->Depth.Test;
       case GL_DITHER: