mesa: Change "BRIAN PAUL" to "THE AUTHORS" in license text.

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

diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c
index 82ca1bd34546db7702da9399d55deeabbb79bd8b..854ffbec16c40d2a317e81d7e068ea7945c25433 100644 (file)
--- a/src/mesa/main/depth.c
+++ b/src/mesa/main/depth.c
@@ -1,10 +1,8 @@
-/* $Id: depth.c,v 1.26 2001/03/03 20:33:27 brianp Exp $ */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.3
+ * Version:  7.1
  *
- * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -19,24 +17,19 @@
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
 
-#ifdef PC_HEADER
-#include "all.h"
-#else
 #include "glheader.h"
+#include "imports.h"
 #include "context.h"
-#include "enums.h"
 #include "depth.h"
+#include "enums.h"
 #include "macros.h"
-#include "mem.h"
 #include "mtypes.h"
-#endif
-
 
 
 /**********************************************************************/
@@ -45,32 +38,32 @@
 
 
 
-void
+void GLAPIENTRY
 _mesa_ClearDepth( GLclampd depth )
 {
    GET_CURRENT_CONTEXT(ctx);
-   GLfloat tmp = (GLfloat) CLAMP( depth, 0.0, 1.0 );
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (ctx->Depth.Clear == tmp)
-      return;
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glClearDepth(%f)\n", depth);
 
-   FLUSH_VERTICES(ctx, _NEW_DEPTH);
-   ctx->Depth.Clear = tmp;
-   if (ctx->Driver.ClearDepth)
-      (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
+   ctx->Depth.Clear = CLAMP( depth, 0.0, 1.0 );
 }
 
 
+void GLAPIENTRY
+_mesa_ClearDepthf( GLclampf depth )
+{
+   _mesa_ClearDepth(depth);
+}
 
-void
+
+void GLAPIENTRY
 _mesa_DepthFunc( GLenum func )
 {
    GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glDepthFunc %s\n", _mesa_lookup_enum_by_nr(func));
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glDepthFunc %s\n", _mesa_lookup_enum_by_nr(func));
 
    switch (func) {
    case GL_LESS:    /* (default) pass if incoming z < stored z */
@@ -87,44 +80,83 @@ _mesa_DepthFunc( GLenum func )
       return;
    }
 
-   if (ctx->Depth.Func == func) 
+   if (ctx->Depth.Func == func)
       return;
-   
+
    FLUSH_VERTICES(ctx, _NEW_DEPTH);
    ctx->Depth.Func = func;
 
-   if (func == GL_NEVER)
-      ctx->_TriangleCaps |= DD_Z_NEVER;
-   else
-      ctx->_TriangleCaps &= ~DD_Z_NEVER;
-
-   if (ctx->Driver.DepthFunc) 
+   if (ctx->Driver.DepthFunc)
       ctx->Driver.DepthFunc( ctx, func );
 }
 
 
 
-void
+void GLAPIENTRY
 _mesa_DepthMask( GLboolean flag )
 {
    GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glDepthMask %d\n", flag);
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glDepthMask %d\n", flag);
 
    /*
     * GL_TRUE indicates depth buffer writing is enabled (default)
     * GL_FALSE indicates depth buffer writing is disabled
     */
-   if (ctx->Depth.Mask == flag) 
+   if (ctx->Depth.Mask == flag)
       return;
-   
+
    FLUSH_VERTICES(ctx, _NEW_DEPTH);
    ctx->Depth.Mask = flag;
 
-   if (ctx->Driver.DepthMask) 
+   if (ctx->Driver.DepthMask)
       ctx->Driver.DepthMask( ctx, flag );
 }
 
 
+
+/**
+ * Specified by the GL_EXT_depth_bounds_test extension.
+ */
+void GLAPIENTRY
+_mesa_DepthBoundsEXT( GLclampd zmin, GLclampd zmax )
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glDepthBounds(%f, %f)\n", zmin, zmax);
+
+   if (zmin > zmax) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glDepthBoundsEXT(zmin > zmax)");
+      return;
+   }
+
+   zmin = CLAMP(zmin, 0.0, 1.0);
+   zmax = CLAMP(zmax, 0.0, 1.0);
+
+   if (ctx->Depth.BoundsMin == zmin && ctx->Depth.BoundsMax == zmax)
+      return;
+
+   FLUSH_VERTICES(ctx, _NEW_DEPTH);
+   ctx->Depth.BoundsMin = (GLfloat) zmin;
+   ctx->Depth.BoundsMax = (GLfloat) zmax;
+}
+
+
+/**********************************************************************/
+/*****                      Initialization                        *****/
+/**********************************************************************/
+
+
+/**
+ * Initialize the depth buffer attribute group in the given context.
+ */
+void
+_mesa_init_depth(struct gl_context *ctx)
+{
+   ctx->Depth.Test = GL_FALSE;
+   ctx->Depth.Clear = 1.0;
+   ctx->Depth.Func = GL_LESS;
+   ctx->Depth.Mask = GL_TRUE;
+}