Mesa (master): mesa: fix up assertion in _mesa_source_buffer_exists

[Marek Olšák]

Module: Mesa
Branch: master
Commit: c0110d5450f2d4722652728a6b30bc9ae6b81c60
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c0110d5450f2d4722652728a6b30bc9ae6b81c60

Author: Marek Olšák <maraeo at gmail.com>
Date:   Mon Mar 14 10:20:55 2011 +0100

mesa: fix up assertion in _mesa_source_buffer_exists

This was probably missed when implementing luminance and luminance alpha
render targets.

_mesa_get_format_bits checks for both GL_*_BITS and GL_TEXTURE_*_SIZE.

This fixes:
main/framebuffer.c:892: _mesa_source_buffer_exists: Assertion `....' failed.

---

 src/mesa/main/framebuffer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index 8916441..430e013 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -889,6 +889,8 @@ _mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
       }
       ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
              _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
              _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
       break;
    case GL_DEPTH: