Fog coordinate stage which drivers may use to replace standard fogging

mechanism.

LogicOp state change callback

8 files changed, 163 insertions, 43 deletions

diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index d7a6ad74253..57489b59f23 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -1,4 +1,4 @@
-/* $Id: attrib.c,v 1.15 2000/02/02 22:03:31 brianp Exp $ */
+/* $Id: attrib.c,v 1.16 2000/02/25 03:55:39 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -423,6 +423,7 @@ _mesa_PopAttrib(void)
                GLubyte oldAlphaRef = ctx->Color.AlphaRef;
                GLenum oldBlendSrc = ctx->Color.BlendSrcRGB;
                GLenum oldBlendDst = ctx->Color.BlendDstRGB;
+	       GLenum oldLogicOp = ctx->Color.LogicOp;
                MEMCPY( &ctx->Color, attr->data,
                        sizeof(struct gl_colorbuffer_attrib) );
                if (ctx->Color.DrawBuffer != oldDrawBuffer) {
@@ -438,6 +439,9 @@ _mesa_PopAttrib(void)
                    ctx->Driver.BlendFunc)
                   (*ctx->Driver.BlendFunc)( ctx, ctx->Color.BlendSrcRGB,
                                             ctx->Color.BlendDstRGB);
+	       if (ctx->Color.LogicOp != oldLogicOp &&
+		   ctx->Driver.LogicOpcode)
+		  ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
             }
             break;
          case GL_CURRENT_BIT:
diff --git a/src/mesa/main/clip.c b/src/mesa/main/clip.c
index acecb60b6bf..5aaf6c663c5 100644
--- a/src/mesa/main/clip.c
+++ b/src/mesa/main/clip.c
@@ -1,4 +1,4 @@
-/* $Id: clip.c,v 1.5 1999/11/11 01:22:25 brianp Exp $ */
+/* $Id: clip.c,v 1.6 2000/02/25 03:55:39 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -42,6 +42,15 @@
 
 
 
+#define CLIP_RGBA0    0x1
+#define CLIP_RGBA1    0x2
+#define CLIP_TEX0     0x4
+#define CLIP_TEX1     0x8
+#define CLIP_INDEX0   0x10
+#define CLIP_INDEX1   0x20
+#define CLIP_FOG_COORD 0x40
+
+
 /* Linear interpolation between A and B: */
 #define LINTERP( T, A, B )   ( (A) + (T) * ( (B) - (A) ) )
 
@@ -58,16 +67,7 @@ do {								\
 } while(0)
    
 
-
-
-#define CLIP_RGBA0    0x1
-#define CLIP_RGBA1    0x2
-#define CLIP_TEX0     0x4
-#define CLIP_TEX1     0x8
-#define CLIP_INDEX0   0x10
-#define CLIP_INDEX1   0x20
-
-static clip_interp_func clip_interp_tab[0x40]; 
+static clip_interp_func clip_interp_tab[0x80]; 
 
 #define IND 0
 #define NAME clip_nil
@@ -113,6 +113,50 @@ static clip_interp_func clip_interp_tab[0x40];
 #define NAME clipINDEX0_INDEX1
 #include "interp_tmp.h"
 
+#define IND (CLIP_FOG_COORD)
+#define NAME clip_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_RGBA0|CLIP_FOG_COORD)
+#define NAME clipRGBA0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD)
+#define NAME clipRGBA0_RGBA1_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX0|CLIP_RGBA0|CLIP_FOG_COORD)
+#define NAME clipTEX0_RGBA0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX0|CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD)
+#define NAME clipTEX0_RGBA0_RGBA1_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0|CLIP_FOG_COORD)
+#define NAME clipTEX1_TEX0_RGBA0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX0|CLIP_FOG_COORD)
+#define NAME clipTEX0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX1|CLIP_TEX0|CLIP_FOG_COORD)
+#define NAME clipTEX1_TEX0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD)
+#define NAME clipTEX1_TEX0_RGBA0_RGBA1_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_INDEX0|CLIP_FOG_COORD)
+#define NAME clipINDEX0_FOG
+#include "interp_tmp.h"
+
+#define IND (CLIP_INDEX0|CLIP_INDEX1|CLIP_FOG_COORD)
+#define NAME clipINDEX0_INDEX1_FOG
+#include "interp_tmp.h"
+
 
 
 
@@ -353,6 +397,8 @@ void gl_update_clipmask( GLcontext *ctx )
 	 mask |= CLIP_INDEX1;
    }
 
+   if (ctx->FogMode == FOG_FRAGMENT && (ctx->TriangleCaps & DD_CLIP_FOG_COORD))
+      mask |= CLIP_FOG_COORD;
    
    ctx->ClipInterpFunc = clip_interp_tab[mask];
    ctx->poly_clip_tab = gl_poly_clip_tab[0];
@@ -448,11 +494,22 @@ void gl_init_clip(void)
    clip_interp_tab[CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0] = clipTEX1_TEX0_RGBA0;
    clip_interp_tab[CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0|CLIP_RGBA1] = 
       clipTEX1_TEX0_RGBA0_RGBA1;
-
    clip_interp_tab[CLIP_TEX0] = clipTEX0;
    clip_interp_tab[CLIP_TEX1|CLIP_TEX0] = clipTEX1_TEX0;
-
    clip_interp_tab[CLIP_INDEX0] = clipINDEX0;
    clip_interp_tab[CLIP_INDEX0|CLIP_INDEX1] = clipINDEX0_INDEX1;
+
+   clip_interp_tab[CLIP_FOG_COORD] = clip_FOG;
+   clip_interp_tab[CLIP_RGBA0|CLIP_FOG_COORD] = clipRGBA0_FOG;
+   clip_interp_tab[CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD] = clipRGBA0_RGBA1_FOG;
+   clip_interp_tab[CLIP_TEX0|CLIP_RGBA0|CLIP_FOG_COORD] = clipTEX0_RGBA0_FOG;
+   clip_interp_tab[CLIP_TEX0|CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD] = clipTEX0_RGBA0_RGBA1_FOG;
+   clip_interp_tab[CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0|CLIP_FOG_COORD] = clipTEX1_TEX0_RGBA0_FOG;
+   clip_interp_tab[CLIP_TEX1|CLIP_TEX0|CLIP_RGBA0|CLIP_RGBA1|CLIP_FOG_COORD] = 
+      clipTEX1_TEX0_RGBA0_RGBA1_FOG;
+   clip_interp_tab[CLIP_TEX0|CLIP_FOG_COORD] = clipTEX0_FOG;
+   clip_interp_tab[CLIP_TEX1|CLIP_TEX0|CLIP_FOG_COORD] = clipTEX1_TEX0_FOG;
+   clip_interp_tab[CLIP_INDEX0|CLIP_FOG_COORD] = clipINDEX0_FOG;
+   clip_interp_tab[CLIP_INDEX0|CLIP_INDEX1|CLIP_FOG_COORD] = clipINDEX0_INDEX1_FOG;
 }
 
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 63dcd6fdb38..423cdffc19e 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -1,4 +1,4 @@
-/* $Id: dd.h,v 1.10 2000/02/17 20:53:48 brianp Exp $ */
+/* $Id: dd.h,v 1.11 2000/02/25 03:55:39 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -705,6 +705,7 @@ struct dd_function_table {
    void (*Lightfv)(GLcontext *ctx, GLenum light,
 		   GLenum pname, const GLfloat *params, GLint nparams );
    void (*LightModelfv)(GLcontext *ctx, GLenum pname, const GLfloat *params);
+   void (*LogicOpcode)(GLcontext *ctx, GLenum opcode);
    void (*PolygonMode)(GLcontext *ctx, GLenum face, GLenum mode);
    void (*Scissor)(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
    void (*ShadeModel)(GLcontext *ctx, GLenum mode);
diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index 71c4996a1b2..672773f124a 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -1,4 +1,4 @@
-/* $Id: dlist.c,v 1.31 2000/02/24 22:04:03 brianp Exp $ */
+/* $Id: dlist.c,v 1.32 2000/02/25 03:55:39 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -3365,10 +3365,12 @@ static void execute_list( GLcontext *ctx, GLuint list )
 		(MESA_VERBOSE & VERBOSE_IMMEDIATE))
 	       gl_print_cassette( (struct immediate *) n[1].data );
 
-	    if (0)
-	       fprintf(stderr, "Run cassette %d, rows %d..%d, beginstate %x\n",
+	    if (MESA_VERBOSE & VERBOSE_DISPLAY_LIST) {
+	       fprintf(stderr, "Run cassette %d, rows %d..%d, beginstate %x ",
 		       IM->id,
 		       IM->Start, IM->Count, IM->BeginState);
+	       gl_print_vert_flags("orflag", IM->OrFlag);
+	    }
 
 	    gl_fixup_cassette( ctx, (struct immediate *) n[1].data ); 
 	    gl_execute_cassette( ctx, (struct immediate *) n[1].data ); 
@@ -4789,6 +4791,7 @@ static void print_list( GLcontext *ctx, FILE *f, GLuint list )
 		    ((struct immediate *) n[1].data)->id,
 		    n[2].ui,
 		    n[3].ui);
+	    gl_print_cassette( (struct immediate *) n[1].data );
 	    break;
 	 case OPCODE_CONTINUE:
             fprintf(f,"DISPLAY-LIST-CONTINUE\n");
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 48b6dc90d48..b3b7a05382e 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -1,4 +1,4 @@
-/* $Id: extensions.c,v 1.17 2000/02/23 22:31:35 brianp Exp $ */
+/* $Id: extensions.c,v 1.18 2000/02/25 03:55:40 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -62,7 +62,7 @@ static struct { int enabled; const char *name; } default_extensions[] = {
    { DEFAULT_ON,     "GL_EXT_texture3D" },
    { ALWAYS_ENABLED, "GL_MESA_window_pos" },
    { ALWAYS_ENABLED, "GL_MESA_resize_buffers" },
-   { ALWAYS_ENABLED, "GL_EXT_shared_texture_palette" },
+   { DEFAULT_ON,     "GL_EXT_shared_texture_palette" },
    { ALWAYS_ENABLED, "GL_EXT_rescale_normal" },
    { ALWAYS_ENABLED, "GL_EXT_abgr" },
    { ALWAYS_ENABLED, "GL_SGIS_texture_edge_clamp" },
@@ -72,10 +72,11 @@ static struct { int enabled; const char *name; } default_extensions[] = {
    { ALWAYS_ENABLED, "GL_NV_texgen_reflection" },
    { DEFAULT_ON,     "GL_PGI_misc_hints" },
    { DEFAULT_ON,     "GL_EXT_compiled_vertex_array" },
-   { DEFAULT_OFF,    "GL_EXT_vertex_array_set" },
    { DEFAULT_ON,     "GL_EXT_clip_volume_hint" },
    { DEFAULT_ON,     "GL_EXT_texture_env_add" },
    { ALWAYS_ENABLED, "GL_ARB_tranpose_matrix" },
+   { DEFAULT_OFF,    "GL_EXT_vertex_array_set" },
+   { DEFAULT_OFF,    "GL_EXT_texture_env" },
 };
 
 
diff --git a/src/mesa/main/fog.c b/src/mesa/main/fog.c
index 9a2520d6066..0644d6ec5ca 100644
--- a/src/mesa/main/fog.c
+++ b/src/mesa/main/fog.c
@@ -1,4 +1,4 @@
-/* $Id: fog.c,v 1.6 2000/02/02 22:22:59 brianp Exp $ */
+/* $Id: fog.c,v 1.7 2000/02/25 03:55:40 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -34,6 +34,7 @@
 #include "macros.h"
 #include "mmath.h"
 #include "types.h"
+#include "xform.h"
 #endif
 
 
@@ -106,23 +107,9 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
 	 }
 	 break;
       case GL_FOG_START:
-#if 0
-         /* Prior to OpenGL 1.1, this was an error */
-         if (*params<0.0F) {
-            gl_error( ctx, GL_INVALID_VALUE, "glFog(GL_FOG_START)" );
-            return;
-         }
-#endif
 	 ctx->Fog.Start = *params;
 	 break;
       case GL_FOG_END:
-#if 0
-         /* Prior to OpenGL 1.1, this was an error */
-         if (*params<0.0F) {
-            gl_error( ctx, GL_INVALID_VALUE, "glFog(GL_FOG_END)" );
-            return;
-         }
-#endif
 	 ctx->Fog.End = *params;
 	 break;
       case GL_FOG_INDEX:
@@ -150,9 +137,13 @@ _mesa_Fogfv( GLenum pname, const GLfloat *params )
 typedef void (*fog_func)( struct vertex_buffer *VB, GLuint side, 
 			  GLubyte flag );
 
+typedef void (*fog_coord_func)( struct vertex_buffer *VB, 
+				const GLvector4f *from,
+				GLubyte flag );
 
 static fog_func fog_ci_tab[2];
 static fog_func fog_rgba_tab[2];
+static fog_coord_func make_fog_coord_tab[2];
 
 /*
  * Compute the fogged color for an array of vertices.
@@ -210,6 +201,70 @@ _mesa_fog_vertices( struct vertex_buffer *VB )
    }
 }
 
+
+static void check_fog_coords( GLcontext *ctx, struct gl_pipeline_stage *d )
+{
+   d->type = 0;
+
+   if (ctx->FogMode==FOG_FRAGMENT)
+   {
+      d->type = PIPE_IMMEDIATE|PIPE_PRECALC;
+      d->inputs = VERT_OBJ_ANY;
+      d->outputs = VERT_FOG_COORD;
+   }
+}
+
+void gl_make_fog_coords( struct vertex_buffer *VB )
+{
+   GLcontext *ctx = VB->ctx;
+
+   /* If full eye coords weren't required, just calculate the eye Z
+    * values.  
+    */
+   if (!ctx->NeedEyeCoords) {
+      GLfloat *m = ctx->ModelView.m;
+      GLfloat plane[4];
+
+      plane[0] = m[2];
+      plane[1] = m[6];
+      plane[2] = m[10];
+      plane[3] = m[14];
+
+      gl_dotprod_tab[0][VB->ObjPtr->size](&VB->Eye,
+					  2, /* fill z coordinates */
+					  VB->ObjPtr,
+					  plane,
+					  0 );
+
+      make_fog_coord_tab[0]( VB, &VB->Eye, 0 );
+   }
+   else
+   {
+      make_fog_coord_tab[0]( VB, VB->EyePtr, 0 );
+   }
+}
+
+
+/* Drivers that want fog coordinates in VB->Spec[0] alpha, can substitute this
+ * stage for the default PIPE_OP_FOG pipeline stage.
+ */
+struct gl_pipeline_stage gl_fog_coord_stage = {
+   "build fog coordinates",
+   PIPE_OP_FOG,
+   PIPE_PRECALC|PIPE_IMMEDIATE,
+   0,
+   NEW_FOG,
+   NEW_LIGHTING|NEW_RASTER_OPS|NEW_FOG|NEW_MODELVIEW,
+   0, 0,
+   0, 0, 0,
+   check_fog_coords,
+   gl_make_fog_coords 
+};
+
+
+
+
+
 /*
  * Apply fog to an array of RGBA pixels.
  * Input:  n - number of pixels
diff --git a/src/mesa/main/lines.c b/src/mesa/main/lines.c
index 199686f60f3..52e9dca7d66 100644
--- a/src/mesa/main/lines.c
+++ b/src/mesa/main/lines.c
@@ -1,4 +1,4 @@
-/* $Id: lines.c,v 1.6 1999/11/11 01:22:27 brianp Exp $ */
+/* $Id: lines.c,v 1.7 2000/02/25 03:55:40 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1024,8 +1024,7 @@ void gl_set_line_function( GLcontext *ctx )
       else {
 	 if (ctx->Light.ShadeModel==GL_SMOOTH) {
 	    /* Width==1, non-stippled, smooth-shaded */
-            if (ctx->Depth.Test
-	        || (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
+            if (ctx->Depth.Test || ctx->FogMode == FOG_FRAGMENT) {
                if (rgbmode)
                   ctx->Driver.LineFunc = smooth_rgba_z_line;
                else
@@ -1040,8 +1039,7 @@ void gl_set_line_function( GLcontext *ctx )
 	 }
          else {
 	    /* Width==1, non-stippled, flat-shaded */
-            if (ctx->Depth.Test
-                || (ctx->Fog.Enabled && ctx->Hint.Fog==GL_NICEST)) {
+            if (ctx->Depth.Test || ctx->FogMode == FOG_FRAGMENT) {
                if (rgbmode)
                   ctx->Driver.LineFunc = flat_rgba_z_line;
                else
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index 328f22d97c8..5b069c5e76f 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -1,4 +1,4 @@
-/* $Id: varray.c,v 1.20 2000/02/05 02:05:14 brianp Exp $ */
+/* $Id: varray.c,v 1.21 2000/02/25 03:55:40 keithw Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -681,6 +681,7 @@ _mesa_DrawArrays(GLenum mode, GLint start, GLsizei count)
 
 	 VB->NextPrimitive[VB->CopyStart] = VB->Count;
 	 VB->Primitive[VB->CopyStart] = mode;
+	 ctx->Array.Flag[count] |= VERT_END_VB;
 
          /* Transform and render.
 	  */
@@ -816,7 +817,7 @@ _mesa_DrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indice
       return;
    }
 
-   if (mode > GL_POLYGON) {
+   if (mode < 0 || mode > GL_POLYGON) {
       gl_error( ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
       return;
    }