mesa: added const qualifiers, move local var

[mesa.git] / src / mesa / main / buffers.c

diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index 1580487ffd62e7d586eff64e3010ee6f0205d83f..d8b5f3b1f4aafe02bbd5f53e27b8644210901682 100644 (file)
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -119,6 +119,10 @@ draw_buffer_enum_to_bitmask(GLenum buffer)
          return BUFFER_BIT_FRONT_LEFT;
       case GL_AUX0:
          return BUFFER_BIT_AUX0;
+      case GL_AUX1:
+      case GL_AUX2:
+      case GL_AUX3:
+         return 1 << BUFFER_COUNT; /* invalid, but not BAD_MASK */
       case GL_COLOR_ATTACHMENT0_EXT:
          return BUFFER_BIT_COLOR0;
       case GL_COLOR_ATTACHMENT1_EXT:
@@ -170,6 +174,10 @@ read_buffer_enum_to_index(GLenum buffer)
          return BUFFER_FRONT_LEFT;
       case GL_AUX0:
          return BUFFER_AUX0;
+      case GL_AUX1:
+      case GL_AUX2:
+      case GL_AUX3:
+         return BUFFER_COUNT; /* invalid, but not -1 */
       case GL_COLOR_ATTACHMENT0_EXT:
          return BUFFER_COLOR0;
       case GL_COLOR_ATTACHMENT1_EXT:
@@ -435,7 +443,7 @@ _mesa_readbuffer(GLcontext *ctx, GLenum buffer, GLint bufferIndex)
    fb->ColorReadBuffer = buffer;
    fb->_ColorReadBufferIndex = bufferIndex;
 
-   ctx->NewState |= _NEW_PIXEL;
+   ctx->NewState |= _NEW_BUFFERS;
 }