Mesa (master): mesa: Replace CLAMP_SELF() macro with more obvious CLAMP() usage.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: d203dbc73d3b036937e0404b580fb04d23e10652
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d203dbc73d3b036937e0404b580fb04d23e10652

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Dec 22 11:04:32 2009 -0800

mesa: Replace CLAMP_SELF() macro with more obvious CLAMP() usage.

The same code is generated, and readers and static analyzers are
happier.

---

 src/mesa/drivers/dri/i915/i830_state.c |    4 ++--
 src/mesa/drivers/dri/i915/i915_state.c |    4 ++--
 src/mesa/drivers/glide/fxddtex.c       |    5 +++--
 src/mesa/main/macros.h                 |    6 ------
 4 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/src/mesa/drivers/dri/i915/i830_state.c b/src/mesa/drivers/dri/i915/i830_state.c
index 645ebe3..acda7e7 100644
--- a/src/mesa/drivers/dri/i915/i830_state.c
+++ b/src/mesa/drivers/dri/i915/i830_state.c
@@ -620,7 +620,7 @@ i830LineWidth(GLcontext * ctx, GLfloat widthf)
    DBG("%s\n", __FUNCTION__);
    
    width = (int) (widthf * 2);
-   CLAMP_SELF(width, 1, 15);
+   width = CLAMP(width, 1, 15);
 
    state5 = i830->state.Ctx[I830_CTXREG_STATE5] & ~FIXED_LINE_WIDTH_MASK;
    state5 |= (ENABLE_FIXED_LINE_WIDTH | FIXED_LINE_WIDTH(width));
@@ -639,7 +639,7 @@ i830PointSize(GLcontext * ctx, GLfloat size)
 
    DBG("%s\n", __FUNCTION__);
    
-   CLAMP_SELF(point_size, 1, 256);
+   point_size = CLAMP(point_size, 1, 256);
    I830_STATECHANGE(i830, I830_UPLOAD_CTX);
    i830->state.Ctx[I830_CTXREG_STATE5] &= ~FIXED_POINT_WIDTH_MASK;
    i830->state.Ctx[I830_CTXREG_STATE5] |= (ENABLE_FIXED_POINT_WIDTH |
diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c
index cc98d12..9d7a9e1 100644
--- a/src/mesa/drivers/dri/i915/i915_state.c
+++ b/src/mesa/drivers/dri/i915/i915_state.c
@@ -571,7 +571,7 @@ i915LineWidth(GLcontext * ctx, GLfloat widthf)
    DBG("%s\n", __FUNCTION__);
    
    width = (int) (widthf * 2);
-   CLAMP_SELF(width, 1, 0xf);
+   width = CLAMP(width, 1, 0xf);
    lis4 |= width << S4_LINE_WIDTH_SHIFT;
 
    if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
@@ -589,7 +589,7 @@ i915PointSize(GLcontext * ctx, GLfloat size)
 
    DBG("%s\n", __FUNCTION__);
    
-   CLAMP_SELF(point_size, 1, 255);
+   point_size = CLAMP(point_size, 1, 255);
    lis4 |= point_size << S4_POINT_WIDTH_SHIFT;
 
    if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
diff --git a/src/mesa/drivers/glide/fxddtex.c b/src/mesa/drivers/glide/fxddtex.c
index a863b02..9dd4f1e 100644
--- a/src/mesa/drivers/glide/fxddtex.c
+++ b/src/mesa/drivers/glide/fxddtex.c
@@ -275,8 +275,9 @@ fxDDTexEnv(GLcontext * ctx, GLenum target, GLenum pname,
    /* apply any lod biasing right now */
    if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
       GLfloat bias = *param;
-      CLAMP_SELF(bias, -ctx->Const.MaxTextureLodBias,
-                        ctx->Const.MaxTextureLodBias - 0.25);
+      bias = CLAMP(bias,
+		   -ctx->Const.MaxTextureLodBias,
+		   ctx->Const.MaxTextureLodBias - 0.25);
 
       grTexLodBiasValue(GR_TMU0, bias);
 
diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index f0ea463..55578ad 100644
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -626,12 +626,6 @@ do {                                    \
 /** Clamp X to [MIN,MAX] */
 #define CLAMP( X, MIN, MAX )  ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) )
 
-/** Assign X to CLAMP(X, MIN, MAX) */
-#define CLAMP_SELF(x, mn, mx)  \
-   ( (x)<(mn) ? ((x) = (mn)) : ((x)>(mx) ? ((x)=(mx)) : (x)) )
-
-
-
 /** Minimum of two values: */
 #define MIN2( A, B )   ( (A)<(B) ? (A) : (B) )