Implemented GL_NV_texture_rectangle extension.

Replace struct gl_texure_object's Dimension w/ Target field.
Added _EnabledUnits to struct gl_texture_attrib - the _ReallyEnabled
  field is obsolete, but still present for now.  This effectively
  removes the 8-texture units limit, 32 units now possible, but unlikely!
New TEXTURE_1D/2D/3D/CUBE/RECT_BIT tokens for unit->_ReallyEnabled field.
Updated device drivers to use ctx->Texture._EnabledUnits.

3 files changed, 31 insertions, 47 deletions

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index caff9488512..2fb1a2ada4c 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -1,4 +1,4 @@
-/* $Id: fxdd.c,v 1.87 2002/06/15 02:38:16 brianp Exp $ */
+/* $Id: fxdd.c,v 1.88 2002/06/15 03:03:10 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -841,14 +841,15 @@ fx_check_IsInHardware(GLcontext * ctx)
    /* Unsupported texture/multitexture cases */
 
    if (fxMesa->haveTwoTMUs) {
-      if (ctx->Texture._ReallyEnabled & (TEXTURE0_3D | TEXTURE1_3D))
-	 return GL_FALSE;	/* can't do 3D textures */
-      if (ctx->Texture._ReallyEnabled & (TEXTURE0_1D | TEXTURE1_1D))
-	 return GL_FALSE;	/* can't do 1D textures */
+      /* we can only do 2D textures */
+      if (ctx->Texture.Unit[0]._ReallyEnabled & ~TEXTURE_2D_BIT)
+	 return GL_FALSE;
+      if (ctx->Texture.Unit[1]._ReallyEnabled & ~TEXTURE_2D_BIT)
+	 return GL_FALSE;
 
-      if (ctx->Texture._ReallyEnabled & TEXTURE0_2D) {
+      if (ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) {
 	 if (ctx->Texture.Unit[0].EnvMode == GL_BLEND &&
-	     (ctx->Texture._ReallyEnabled & TEXTURE1_2D ||
+	     (ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT ||
 	      ctx->Texture.Unit[0].EnvColor[0] != 0 ||
 	      ctx->Texture.Unit[0].EnvColor[1] != 0 ||
 	      ctx->Texture.Unit[0].EnvColor[2] != 0 ||
@@ -859,7 +860,7 @@ fx_check_IsInHardware(GLcontext * ctx)
 	    return GL_FALSE;
       }
 
-      if (ctx->Texture._ReallyEnabled & TEXTURE1_2D) {
+      if (ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT) {
 	 if (ctx->Texture.Unit[1].EnvMode == GL_BLEND)
 	    return GL_FALSE;
 	 if (ctx->Texture.Unit[1]._Current->Image[0]->Border > 0)
@@ -873,9 +874,10 @@ fx_check_IsInHardware(GLcontext * ctx)
 
       /* KW: This was wrong (I think) and I changed it... which doesn't mean
        * it is now correct...
+       * BP: The old condition just seemed to test if both texture units
+       * were enabled.  That's easy!
        */
-      if ((ctx->Texture._ReallyEnabled & (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D)) &&
-	  (ctx->Texture._ReallyEnabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D))) {
+      if (ctx->Texture._EnabledUnits == 0x3) {
 	 /* Can't use multipass to blend a multitextured triangle - fall
 	  * back to software.
 	  */
@@ -893,16 +895,12 @@ fx_check_IsInHardware(GLcontext * ctx)
       }
    }
    else {
-      if ((ctx->Texture._ReallyEnabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D)) ||
-	  /* Not very well written ... */
-	  ((ctx->Texture._ReallyEnabled & TEXTURE0_1D) &&
-           (!(ctx->Texture._ReallyEnabled & TEXTURE0_2D)))
-	 ) {
+      /* we have just one texture unit */
+      if (ctx->Texture._EnabledUnits > 0x1) {
 	 return GL_FALSE;
       }
 
-
-      if ((ctx->Texture._ReallyEnabled & TEXTURE0_2D) &&
+      if ((ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) &&
 	  (ctx->Texture.Unit[0].EnvMode == GL_BLEND)) {
 	 return GL_FALSE;
       }
diff --git a/src/mesa/drivers/glide/fxsetup.c b/src/mesa/drivers/glide/fxsetup.c
index 431b02a9ba7..bf51635b319 100644
--- a/src/mesa/drivers/glide/fxsetup.c
+++ b/src/mesa/drivers/glide/fxsetup.c
@@ -1,4 +1,4 @@
-/* $Id: fxsetup.c,v 1.36 2001/09/23 16:50:01 brianp Exp $ */
+/* $Id: fxsetup.c,v 1.37 2002/06/15 03:03:10 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -1002,39 +1002,25 @@ static void
 fxSetupTexture_NoLock(GLcontext * ctx)
 {
    fxMesaContext fxMesa = (fxMesaContext) ctx->DriverCtx;
-   GLuint tex2Denabled;
 
    if (MESA_VERBOSE & VERBOSE_DRIVER) {
       fprintf(stderr, "fxmesa: fxSetupTexture(...)\n");
    }
 
-   /* Texture Combine, Color Combine and Alpha Combine.
-    */
-   tex2Denabled = (ctx->Texture._ReallyEnabled & TEXTURE0_2D);
-
-   if (fxMesa->haveTwoTMUs)
-      tex2Denabled |= (ctx->Texture._ReallyEnabled & TEXTURE1_2D);
-
-   switch (tex2Denabled) {
-   case TEXTURE0_2D:
+   /* Texture Combine, Color Combine and Alpha Combine. */
+   if (ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT &&
+       ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT &&
+       fxMesa->haveTwoTMUs) {
+      fxSetupTextureDoubleTMU_NoLock(ctx);
+   }
+   else if (ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT) {
       fxSetupTextureSingleTMU_NoLock(ctx, 0);
-      break;
-   case TEXTURE1_2D:
+   }
+   else if (ctx->Texture.Unit[1]._ReallyEnabled == TEXTURE_2D_BIT) {
       fxSetupTextureSingleTMU_NoLock(ctx, 1);
-      break;
-   case (TEXTURE0_2D | TEXTURE1_2D):
-      if (fxMesa->haveTwoTMUs)
-	 fxSetupTextureDoubleTMU_NoLock(ctx);
-      else {
-	 if (MESA_VERBOSE & VERBOSE_DRIVER)
-	    fprintf(stderr, "fxmesa: enabling fake multitexture\n");
-
-	 fxSetupTextureSingleTMU_NoLock(ctx, 0);
-      }
-      break;
-   default:
+   }
+   else {
       fxSetupTextureNone_NoLock(ctx);
-      break;
    }
 }
 
diff --git a/src/mesa/drivers/glide/fxvb.c b/src/mesa/drivers/glide/fxvb.c
index f0534b65ecc..24e01af0960 100644
--- a/src/mesa/drivers/glide/fxvb.c
+++ b/src/mesa/drivers/glide/fxvb.c
@@ -1,4 +1,4 @@
-/* $Id: fxvb.c,v 1.13 2002/06/15 02:38:16 brianp Exp $ */
+/* $Id: fxvb.c,v 1.14 2002/06/15 03:03:10 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -342,8 +342,8 @@ void fxChooseVertexState( GLcontext *ctx )
    fxMesa->tmu_source[0] = 0;
    fxMesa->tmu_source[1] = 1;
 
-   if (ctx->Texture._ReallyEnabled & TEXTURE1_ANY) {
-      if (ctx->Texture._ReallyEnabled & TEXTURE0_ANY) {
+   if (ctx->Texture._EnabledUnits & 0x2) {
+      if (ctx->Texture._EnabledUnits & 0x1) {
 	 ind |= SETUP_TMU1|SETUP_TMU0;
       }
       else {
@@ -352,7 +352,7 @@ void fxChooseVertexState( GLcontext *ctx )
 	 ind |= SETUP_TMU0;
       }
    }
-   else if (ctx->Texture._ReallyEnabled & TEXTURE0_ANY) {
+   else if (ctx->Texture._EnabledUnits & 0x1) {
       ind |= SETUP_TMU0;
    }