X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Ffog.c;h=89153912e235adb6e658b8969a35118452a21ffc;hb=079bff5a99fa19029fc0caba92fe57046ee29b23;hp=439232248e689e84f62644291c007ac352f69503;hpb=aafcbd2cf726e9f300d6a9cdfd62ee0fd64f85c9;p=mesa.git

diff --git a/src/mesa/main/fog.c b/src/mesa/main/fog.c
index 439232248e6..89153912e23 100644
--- a/src/mesa/main/fog.c
+++ b/src/mesa/main/fog.c
@@ -1,6 +1,5 @@
 /*
  * Mesa 3-D graphics library
- * Version:  5.1
  *
  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
  *
@@ -17,9 +16,10 @@
  * 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.
  */
 
 
@@ -97,7 +97,6 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
 {
    GET_CURRENT_CONTEXT(ctx);
    GLenum m;
-   ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    switch (pname) {
       case GL_FOG_MODE:
@@ -141,6 +140,8 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
          update_fog_scale(ctx);
          break;
       case GL_FOG_INDEX:
+         if (ctx->API != API_OPENGL_COMPAT)
+            goto invalid_pname;
  	 if (ctx->Fog.Index == *params)
 	    return;
 	 FLUSH_VERTICES(ctx, _NEW_FOG);
@@ -150,6 +151,10 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
 	 if (TEST_EQ_4V(ctx->Fog.Color, params))
 	    return;
 	 FLUSH_VERTICES(ctx, _NEW_FOG);
+	 ctx->Fog.ColorUnclamped[0] = params[0];
+	 ctx->Fog.ColorUnclamped[1] = params[1];
+	 ctx->Fog.ColorUnclamped[2] = params[2];
+	 ctx->Fog.ColorUnclamped[3] = params[3];
 	 ctx->Fog.Color[0] = CLAMP(params[0], 0.0F, 1.0F);
 	 ctx->Fog.Color[1] = CLAMP(params[1], 0.0F, 1.0F);
 	 ctx->Fog.Color[2] = CLAMP(params[2], 0.0F, 1.0F);
@@ -157,7 +162,7 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
          break;
       case GL_FOG_COORDINATE_SOURCE_EXT: {
 	 GLenum p = (GLenum) (GLint) *params;
-         if (!ctx->Extensions.EXT_fog_coord ||
+         if (ctx->API != API_OPENGL_COMPAT ||
              (p != GL_FOG_COORDINATE_EXT && p != GL_FRAGMENT_DEPTH_EXT)) {
 	    _mesa_error(ctx, GL_INVALID_ENUM, "glFog");
 	    return;
@@ -168,14 +173,32 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
 	 ctx->Fog.FogCoordinateSource = p;
 	 break;
       }
+      case GL_FOG_DISTANCE_MODE_NV: {
+	 GLenum p = (GLenum) (GLint) *params;
+         if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.NV_fog_distance ||
+             (p != GL_EYE_RADIAL_NV && p != GL_EYE_PLANE && p != GL_EYE_PLANE_ABSOLUTE_NV)) {
+	    _mesa_error(ctx, GL_INVALID_ENUM, "glFog");
+	    return;
+	 }
+	 if (ctx->Fog.FogDistanceMode == p)
+	    return;
+	 FLUSH_VERTICES(ctx, _NEW_FOG);
+	 ctx->Fog.FogDistanceMode = p;
+	 break;
+      }
       default:
-         _mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
-         return;
+         goto invalid_pname;
    }
 
    if (ctx->Driver.Fogfv) {
       (*ctx->Driver.Fogfv)( ctx, pname, params );
    }
+
+   return;
+
+invalid_pname:
+   _mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
+   return;
 }
 
 
@@ -189,6 +212,7 @@ void _mesa_init_fog( struct gl_context * ctx )
    ctx->Fog.Enabled = GL_FALSE;
    ctx->Fog.Mode = GL_EXP;
    ASSIGN_4V( ctx->Fog.Color, 0.0, 0.0, 0.0, 0.0 );
+   ASSIGN_4V( ctx->Fog.ColorUnclamped, 0.0, 0.0, 0.0, 0.0 );
    ctx->Fog.Index = 0.0;
    ctx->Fog.Density = 1.0;
    ctx->Fog.Start = 0.0;
@@ -196,4 +220,5 @@ void _mesa_init_fog( struct gl_context * ctx )
    ctx->Fog.ColorSumEnabled = GL_FALSE;
    ctx->Fog.FogCoordinateSource = GL_FRAGMENT_DEPTH_EXT;
    ctx->Fog._Scale = 1.0f;
+   ctx->Fog.FogDistanceMode = GL_EYE_PLANE_ABSOLUTE_NV;
 }