Some initial work for OpenGL 2.0: glStencilFunc/Op/MaskSeparate() functions.

5 files changed, 280 insertions, 6 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 2b1131bc41..f7f7eacf06 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -7,7 +7,7 @@
  * Mesa 3-D graphics library
  * Version:  6.3
  *
- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2005  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"),
@@ -676,7 +676,16 @@ struct dd_function_table {
    void (*StencilMask)(GLcontext *ctx, GLuint mask);
    /** Set stencil test actions */
    void (*StencilOp)(GLcontext *ctx, GLenum fail, GLenum zfail, GLenum zpass);
+   /** Set active stencil face (GL_EXT_stencil_two_side) */
    void (*ActiveStencilFace)(GLcontext *ctx, GLuint face);
+   /** OpenGL 2.0 two-sided StencilFunc */
+   void (*StencilFuncSeparate)(GLcontext *ctx, GLenum face, GLenum func,
+                               GLint ref, GLuint mask);
+   /** OpenGL 2.0 two-sided StencilMask */
+   void (*StencilMaskSeparate)(GLcontext *ctx, GLenum face, GLuint mask);
+   /** OpenGL 2.0 two-sided StencilOp */
+   void (*StencilOpSeparate)(GLcontext *ctx, GLenum face, GLenum fail,
+                             GLenum zfail, GLenum zpass);
    /** Control the generation of texture coordinates */
    void (*TexGen)(GLcontext *ctx, GLenum coord, GLenum pname,
 		  const GLfloat *params);
diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index 8ef5269cd8..beacf5b1f9 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -322,6 +322,10 @@ typedef enum {
 	/* GL_ATI_fragment_shader */
 	OPCODE_BIND_FRAGMENT_SHADER_ATI,
 	OPCODE_SET_FRAGMENT_SHADER_CONSTANTS_ATI,
+        /* OpenGL 2.0 */
+        OPCODE_STENCIL_FUNC_SEPARATE,
+        OPCODE_STENCIL_OP_SEPARATE,
+        OPCODE_STENCIL_MASK_SEPARATE,
 	
 	/* Vertex attributes -- fallback for when optimized display
 	 * list build isn't active.
@@ -799,6 +803,11 @@ _mesa_init_lists( void )
       InstSize[OPCODE_BIND_FRAGMENT_SHADER_ATI] = 2;
       InstSize[OPCODE_SET_FRAGMENT_SHADER_CONSTANTS_ATI] = 6;
 #endif
+      /* OpenGL 2.0 */
+      InstSize[OPCODE_STENCIL_FUNC_SEPARATE] = 5;
+      InstSize[OPCODE_STENCIL_MASK_SEPARATE] = 3;
+      InstSize[OPCODE_STENCIL_OP_SEPARATE] = 5;
+
       InstSize[OPCODE_ATTR_1F_NV] = 3;
       InstSize[OPCODE_ATTR_2F_NV] = 4;
       InstSize[OPCODE_ATTR_3F_NV] = 5;
@@ -3259,6 +3268,61 @@ static void GLAPIENTRY save_StencilOp( GLenum fail, GLenum zfail, GLenum zpass )
 }
 
 
+static void GLAPIENTRY
+save_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   Node *n;
+   ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
+   n = ALLOC_INSTRUCTION(ctx, OPCODE_STENCIL_FUNC_SEPARATE, 4);
+   if (n) {
+      n[1].e = face;
+      n[2].e = func;
+      n[3].i = ref;
+      n[4].ui = mask;
+   }
+   if (ctx->ExecuteFlag) {
+      ctx->Exec->StencilFuncSeparate(face, func, ref, mask);
+   }
+}
+
+
+static void GLAPIENTRY
+save_StencilMaskSeparate(GLenum face, GLuint mask)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   Node *n;
+   ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
+   n = ALLOC_INSTRUCTION(ctx, OPCODE_STENCIL_MASK_SEPARATE, 2);
+   if (n) {
+      n[1].e = face;
+      n[2].ui = mask;
+   }
+   if (ctx->ExecuteFlag) {
+      ctx->Exec->StencilMaskSeparate(face, mask);
+   }
+}
+
+
+static void GLAPIENTRY
+save_StencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   Node *n;
+   ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
+   n = ALLOC_INSTRUCTION( ctx, OPCODE_STENCIL_OP_SEPARATE, 4 );
+   if (n) {
+      n[1].e = face;
+      n[2].e = fail;
+      n[3].e = zfail;
+      n[4].e = zpass;
+   }
+   if (ctx->ExecuteFlag) {
+      ctx->Exec->StencilOpSeparate(face, fail, zfail, zpass);
+   }
+}
+
+
 static void GLAPIENTRY save_TexEnvfv( GLenum target, GLenum pname, const GLfloat *params )
 {
    GET_CURRENT_CONTEXT(ctx);
@@ -4567,7 +4631,7 @@ static void GLAPIENTRY save_DepthBoundsEXT( GLclampd zmin, GLclampd zmax )
    GET_CURRENT_CONTEXT(ctx);
    Node *n;
    ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
-   n = ALLOC_INSTRUCTION( ctx, OPCODE_ACTIVE_STENCIL_FACE_EXT, 2 );
+   n = ALLOC_INSTRUCTION( ctx, OPCODE_DEPTH_BOUNDS_EXT, 2 );
    if (n) {
       n[1].f = (GLfloat) zmin;
       n[2].f = (GLfloat) zmax;
@@ -6052,6 +6116,15 @@ execute_list( GLcontext *ctx, GLuint list )
 	 case OPCODE_STENCIL_OP:
 	    (*ctx->Exec->StencilOp)( n[1].e, n[2].e, n[3].e );
 	    break;
+	 case OPCODE_STENCIL_FUNC_SEPARATE:
+	    ctx->Exec->StencilFuncSeparate( n[1].e, n[2].e, n[3].i, n[4].ui );
+	    break;
+	 case OPCODE_STENCIL_MASK_SEPARATE:
+	    ctx->Exec->StencilMaskSeparate( n[1].e, n[2].ui );
+	    break;
+	 case OPCODE_STENCIL_OP_SEPARATE:
+	    ctx->Exec->StencilOpSeparate( n[1].e, n[2].e, n[3].e, n[4].e );
+	    break;
          case OPCODE_TEXENV:
             {
                GLfloat params[4];
@@ -7628,6 +7701,11 @@ _mesa_init_dlist_table( struct _glapi_table *table )
    table->TexImage3D = save_TexImage3D;
    table->TexSubImage3D = save_TexSubImage3D;
 
+   /* GL 2.0 */
+   table->StencilFuncSeparate = save_StencilFuncSeparate;
+   table->StencilMaskSeparate = save_StencilMaskSeparate;
+   table->StencilOpSeparate = save_StencilOpSeparate;
+
    /* GL_ARB_imaging */
    /* Not all are supported */
    table->BlendColor = save_BlendColor;
diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 64bb02cf01..886a571eb8 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -382,6 +382,11 @@ _mesa_init_exec_table(struct _glapi_table *exec)
    exec->SeparableFilter2D = _mesa_SeparableFilter2D;
 #endif
 
+   /* OpenGL 2.0 */
+   exec->StencilFuncSeparate = _mesa_StencilFuncSeparate;
+   exec->StencilMaskSeparate = _mesa_StencilMaskSeparate;
+   exec->StencilOpSeparate = _mesa_StencilOpSeparate;
+
    /* 2. GL_EXT_blend_color */
 #if 0
 /*    exec->BlendColorEXT = _mesa_BlendColorEXT; */
diff --git a/src/mesa/main/stencil.c b/src/mesa/main/stencil.c
index 8c89e8cc13..dfda4aa8fd 100644
--- a/src/mesa/main/stencil.c
+++ b/src/mesa/main/stencil.c
@@ -5,9 +5,9 @@
 
 /*
  * Mesa 3-D graphics library
- * Version:  4.1
+ * Version:  6.3
  *
- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2005  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"),
@@ -244,6 +244,7 @@ _mesa_StencilOp(GLenum fail, GLenum zfail, GLenum zpass)
 }
 
 
+
 #if _HAVE_FULL_GL
 /* GL_EXT_stencil_two_side */
 void GLAPIENTRY
@@ -264,6 +265,175 @@ _mesa_ActiveStencilFaceEXT(GLenum face)
 #endif
 
 
+
+/**
+ * OpenGL 2.0 function.
+ * \todo Make StencilOp() call this function.  And eventually remove the
+ * ctx->Driver.StencilOp function and use ctx->Driver.StencilOpSeparate
+ * instead.
+ */
+void GLAPIENTRY
+_mesa_StencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(face)");
+      return;
+   }
+
+   switch (fail) {
+      case GL_KEEP:
+      case GL_ZERO:
+      case GL_REPLACE:
+      case GL_INCR:
+      case GL_DECR:
+      case GL_INVERT:
+         break;
+      case GL_INCR_WRAP_EXT:
+      case GL_DECR_WRAP_EXT:
+         if (ctx->Extensions.EXT_stencil_wrap) {
+            break;
+         }
+         /* FALL-THROUGH */
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(fail)");
+         return;
+   }
+   switch (zfail) {
+      case GL_KEEP:
+      case GL_ZERO:
+      case GL_REPLACE:
+      case GL_INCR:
+      case GL_DECR:
+      case GL_INVERT:
+         break;
+      case GL_INCR_WRAP_EXT:
+      case GL_DECR_WRAP_EXT:
+         if (ctx->Extensions.EXT_stencil_wrap) {
+            break;
+         }
+         /* FALL-THROUGH */
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zfail)");
+         return;
+   }
+   switch (zpass) {
+      case GL_KEEP:
+      case GL_ZERO:
+      case GL_REPLACE:
+      case GL_INCR:
+      case GL_DECR:
+      case GL_INVERT:
+         break;
+      case GL_INCR_WRAP_EXT:
+      case GL_DECR_WRAP_EXT:
+         if (ctx->Extensions.EXT_stencil_wrap) {
+            break;
+         }
+         /* FALL-THROUGH */
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zpass)");
+         return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_STENCIL);
+
+   if (face == GL_FRONT || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.FailFunc[0] = fail;
+      ctx->Stencil.ZFailFunc[0] = zfail;
+      ctx->Stencil.ZPassFunc[0] = zpass;
+   }
+   if (face == GL_BACK || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.FailFunc[1] = fail;
+      ctx->Stencil.ZFailFunc[1] = zfail;
+      ctx->Stencil.ZPassFunc[1] = zpass;
+   }
+
+   if (ctx->Driver.StencilOpSeparate) {
+      ctx->Driver.StencilOpSeparate(ctx, face, fail, zfail, zpass);
+   }
+}
+
+
+/* OpenGL 2.0 */
+void GLAPIENTRY
+_mesa_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLint maxref;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(face)");
+      return;
+   }
+
+   switch (func) {
+      case GL_NEVER:
+      case GL_LESS:
+      case GL_LEQUAL:
+      case GL_GREATER:
+      case GL_GEQUAL:
+      case GL_EQUAL:
+      case GL_NOTEQUAL:
+      case GL_ALWAYS:
+         break;
+      default:
+         _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(func)");
+         return;
+   }
+
+   maxref = (1 << STENCIL_BITS) - 1;
+   ref = (GLstencil) CLAMP(ref, 0, maxref);
+
+   FLUSH_VERTICES(ctx, _NEW_STENCIL);
+
+   if (face == GL_FRONT || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.Function[0] = func;
+      ctx->Stencil.Ref[0] = ref;
+      ctx->Stencil.ValueMask[0] = (GLstencil) mask;
+   }
+   if (face == GL_BACK || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.Function[1] = func;
+      ctx->Stencil.Ref[1] = ref;
+      ctx->Stencil.ValueMask[1] = (GLstencil) mask;
+   }
+
+   if (ctx->Driver.StencilFuncSeparate) {
+      ctx->Driver.StencilFuncSeparate(ctx, face, func, ref, mask);
+   }
+}
+
+
+/* OpenGL 2.0 */
+void GLAPIENTRY
+_mesa_StencilMaskSeparate(GLenum face, GLuint mask)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glStencilaMaskSeparate(face)");
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_STENCIL);
+
+   if (face == GL_FRONT || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.WriteMask[0] = (GLstencil) mask;
+   }
+   if (face == GL_BACK || face == GL_FRONT_AND_BACK) {
+      ctx->Stencil.WriteMask[1] = (GLstencil) mask;
+   }
+
+   if (ctx->Driver.StencilMaskSeparate) {
+      ctx->Driver.StencilMaskSeparate(ctx, face, mask);
+   }
+}
+
+
 /**
  * Initialize the context stipple state.
  *
diff --git a/src/mesa/main/stencil.h b/src/mesa/main/stencil.h
index 5620d14c73..ec2927cfd2 100644
--- a/src/mesa/main/stencil.h
+++ b/src/mesa/main/stencil.h
@@ -5,9 +5,9 @@
 
 /*
  * Mesa 3-D graphics library
- * Version:  4.1
+ * Version:  6.3
  *
- * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2005  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"),
@@ -55,6 +55,18 @@ extern void GLAPIENTRY
 _mesa_ActiveStencilFaceEXT(GLenum face);
 
 
+extern void GLAPIENTRY
+_mesa_StencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+
+
+extern void GLAPIENTRY
+_mesa_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
+
+
+extern void GLAPIENTRY
+_mesa_StencilMaskSeparate(GLenum face, GLuint mask);
+
+
 extern void 
 _mesa_init_stencil( GLcontext * ctx );