diff options
| author | Brian Paul <[email protected]> | 2000-06-19 00:42:24 +0000 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2000-06-19 00:42:24 +0000 |
| commit | e4b65b6e59d3103c2e63c0b1ae6f04520dc780e5 (patch) | |
| tree | f284bee45cec187451451543c28c574be2520e16 /src | |
| parent | b92471b74c3902765225d2d71f4f243f052ab947 (diff) | |
check for special cases of value = 0 or 1 in glAccum
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/accum.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/mesa/main/accum.c b/src/mesa/main/accum.c index 6654a6314ba..37967f21338 100644 --- a/src/mesa/main/accum.c +++ b/src/mesa/main/accum.c @@ -1,4 +1,4 @@ -/* $Id: accum.c,v 1.20 2000/04/05 14:40:04 brianp Exp $ */ +/* $Id: accum.c,v 1.21 2000/06/19 00:42:24 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -188,7 +188,7 @@ _mesa_Accum( GLenum op, GLfloat value ) switch (op) { case GL_ADD: - { + if (value != 0.0F) { const GLaccum intVal = (GLaccum) (value * acc_scale); GLuint j; /* Leave optimized accum buffer mode */ @@ -206,7 +206,7 @@ _mesa_Accum( GLenum op, GLfloat value ) break; case GL_MULT: - { + if (value != 1.0F) { GLuint j; /* Leave optimized accum buffer mode */ if (ctx->IntegerAccumMode) @@ -223,6 +223,9 @@ _mesa_Accum( GLenum op, GLfloat value ) break; case GL_ACCUM: + if (value == 0.0F) + return; + (*ctx->Driver.SetReadBuffer)( ctx, ctx->ReadBuffer, ctx->Pixel.DriverReadBuffer ); |