-/* $Id: depth.c,v 1.22 2000/10/31 18:09:44 keithw Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.3
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ * Version: 7.1
+ *
+ * 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
- *
+ *
* 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 "types.h"
-#endif
-
+#include "mtypes.h"
/**********************************************************************/
-void
+void GLAPIENTRY
_mesa_ClearDepth( GLclampd depth )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glClearDepth");
- ctx->Depth.Clear = (GLfloat) CLAMP( depth, 0.0, 1.0 );
- if (ctx->Driver.ClearDepth)
- (*ctx->Driver.ClearDepth)( ctx, ctx->Depth.Clear );
- ctx->NewState |= _NEW_DEPTH;
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glClearDepth(%f)\n", depth);
+
+ 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_AND_FLUSH(ctx, "glDepthFunc");
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- fprintf(stderr, "glDepthFunc %s\n", gl_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 */
- case GL_GEQUAL:
- case GL_LEQUAL:
- case GL_GREATER:
- case GL_NOTEQUAL:
- case GL_EQUAL:
- case GL_ALWAYS:
- if (ctx->Depth.Func != func) {
- ctx->Depth.Func = func;
- ctx->NewState |= _NEW_DEPTH;
- ctx->TriangleCaps &= ~DD_Z_NEVER;
- if (ctx->Driver.DepthFunc) {
- (*ctx->Driver.DepthFunc)( ctx, func );
- }
- }
- break;
- case GL_NEVER:
- if (ctx->Depth.Func != func) {
- ctx->Depth.Func = func;
- ctx->NewState |= _NEW_DEPTH;
- ctx->TriangleCaps |= DD_Z_NEVER;
- if (ctx->Driver.DepthFunc) {
- (*ctx->Driver.DepthFunc)( ctx, func );
- }
- }
- break;
- default:
- gl_error( ctx, GL_INVALID_ENUM, "glDepth.Func" );
+ case GL_LESS: /* (default) pass if incoming z < stored z */
+ case GL_GEQUAL:
+ case GL_LEQUAL:
+ case GL_GREATER:
+ case GL_NOTEQUAL:
+ case GL_EQUAL:
+ case GL_ALWAYS:
+ case GL_NEVER:
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glDepth.Func" );
+ return;
}
+
+ if (ctx->Depth.Func == func)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_DEPTH);
+ ctx->Depth.Func = func;
+
+ if (ctx->Driver.DepthFunc)
+ ctx->Driver.DepthFunc( ctx, func );
}
-void
+void GLAPIENTRY
_mesa_DepthMask( GLboolean flag )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glDepthMask");
- 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) {
- ctx->Depth.Mask = flag;
- ctx->NewState |= _NEW_DEPTH;
- if (ctx->Driver.DepthMask) {
- (*ctx->Driver.DepthMask)( ctx, flag );
- }
+ if (ctx->Depth.Mask == flag)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_DEPTH);
+ ctx->Depth.Mask = flag;
+
+ 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;
+}
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