-/* $Id: depth.c,v 1.30 2002/06/15 02:38:15 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
*
- * Copyright (C) 1999-2002 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"),
* 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
- * 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 "context.h"
-#include "enums.h"
#include "depth.h"
+#include "enums.h"
#include "macros.h"
-#include "mem.h"
#include "mtypes.h"
-#endif
-
+#include "state.h"
/**********************************************************************/
-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
-_mesa_DepthFunc( GLenum func )
+void GLAPIENTRY
+_mesa_ClearDepthf( GLclampf depth )
{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
- _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:
- case GL_NEVER:
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glDepth.Func" );
- return;
- }
+ _mesa_ClearDepth(depth);
+}
+
+static ALWAYS_INLINE void
+depth_func(struct gl_context *ctx, GLenum func, bool no_error)
+{
if (ctx->Depth.Func == func)
return;
- FLUSH_VERTICES(ctx, _NEW_DEPTH);
+ if (!no_error) {
+ 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:
+ case GL_NEVER:
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glDepth.Func");
+ return;
+ }
+ }
+
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewDepth ? 0 : _NEW_DEPTH);
+ ctx->NewDriverState |= ctx->DriverFlags.NewDepth;
ctx->Depth.Func = func;
+ _mesa_update_allow_draw_out_of_order(ctx);
if (ctx->Driver.DepthFunc)
- ctx->Driver.DepthFunc( ctx, func );
+ ctx->Driver.DepthFunc(ctx, func);
}
+void GLAPIENTRY
+_mesa_DepthFunc_no_error(GLenum func)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ depth_func(ctx, func, true);
+}
-void
+
+void GLAPIENTRY
+_mesa_DepthFunc(GLenum func)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glDepthFunc %s\n", _mesa_enum_to_string(func));
+
+ depth_func(ctx, func, false);
+}
+
+
+
+void GLAPIENTRY
_mesa_DepthMask( GLboolean flag )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+ if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glDepthMask %d\n", flag);
/*
if (ctx->Depth.Mask == flag)
return;
- FLUSH_VERTICES(ctx, _NEW_DEPTH);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewDepth ? 0 : _NEW_DEPTH);
+ ctx->NewDriverState |= ctx->DriverFlags.NewDepth;
ctx->Depth.Mask = flag;
+ _mesa_update_allow_draw_out_of_order(ctx);
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, ctx->DriverFlags.NewDepth ? 0 : _NEW_DEPTH);
+ ctx->NewDriverState |= ctx->DriverFlags.NewDepth;
+ 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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