mesa: implement DEBUG_ALWAYS_FLUSH debug option

This flag has been around for a while but it wasn't actually used anywhere.

Now, setting this flag causes a glFlush() to be issued after each
drawing call (including glBegin/End, glDrawElements, glDrawArrays,
glDrawPixels, glCopyPixels and glBitmap).

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index c2f7db2e885..def55dddde1 100644
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -180,6 +180,10 @@ _mesa_DrawPixels( GLsizei width, GLsizei height,
 
 end:
    _mesa_set_vp_override(ctx, GL_FALSE);
+
+   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
+      _mesa_flush(ctx);
+   }
 }
 
 
@@ -280,6 +284,10 @@ _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
 
 end:
    _mesa_set_vp_override(ctx, GL_FALSE);
+
+   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
+      _mesa_flush(ctx);
+   }
 }
 
 
@@ -354,6 +362,10 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
    /* update raster position */
    ctx->Current.RasterPos[0] += xmove;
    ctx->Current.RasterPos[1] += ymove;
+
+   if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
+      _mesa_flush(ctx);
+   }
 }