vega: replace casts with pointer/handle conversion functions

Per the spec, all OpenVG handles are 32-bit.  We can't just cast them
to/from integers on 64-bit systems.

Start fixing that mess by introducing a set of handle/pointer conversion
functions in handle.h.  The next step is to implement a handle/pointer
hash table...

11 files changed, 297 insertions, 165 deletions

diff --git a/src/gallium/state_trackers/vega/api_filters.c b/src/gallium/state_trackers/vega/api_filters.c
index 724e38241b..0beeeafee1 100644
--- a/src/gallium/state_trackers/vega/api_filters.c
+++ b/src/gallium/state_trackers/vega/api_filters.c
@@ -29,6 +29,7 @@
 #include "vg_context.h"
 #include "image.h"
 #include "api.h"
+#include "handle.h"
 #include "renderer.h"
 #include "shaders_cache.h"
 
@@ -251,8 +252,8 @@ void vegaColorMatrix(VGImage dst, VGImage src,
       return;
    }
 
-   d = (struct vg_image*)dst;
-   s = (struct vg_image*)src;
+   d = handle_to_image(dst);
+   s = handle_to_image(src);
 
    if (vg_image_overlaps(d, s)) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -317,8 +318,8 @@ void vegaConvolve(VGImage dst, VGImage src,
       return;
    }
 
-   d = (struct vg_image*)dst;
-   s = (struct vg_image*)src;
+   d = handle_to_image(dst);
+   s = handle_to_image(src);
 
    if (vg_image_overlaps(d, s)) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -502,8 +503,8 @@ void vegaGaussianBlur(VGImage dst, VGImage src,
       return;
    }
 
-   d = (struct vg_image*)dst;
-   s = (struct vg_image*)src;
+   d = handle_to_image(dst);
+   s = handle_to_image(src);
 
    if (vg_image_overlaps(d, s)) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -599,8 +600,8 @@ void vegaLookup(VGImage dst, VGImage src,
       return;
    }
 
-   d = (struct vg_image*)dst;
-   s = (struct vg_image*)src;
+   d = handle_to_image(dst);
+   s = handle_to_image(src);
 
    if (vg_image_overlaps(d, s)) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -662,8 +663,8 @@ void vegaLookupSingle(VGImage dst, VGImage src,
       return;
    }
 
-   d = (struct vg_image*)dst;
-   s = (struct vg_image*)src;
+   d = handle_to_image(dst);
+   s = handle_to_image(src);
 
    if (vg_image_overlaps(d, s)) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
diff --git a/src/gallium/state_trackers/vega/api_images.c b/src/gallium/state_trackers/vega/api_images.c
index ad95409cd0..d8ad57a9aa 100644
--- a/src/gallium/state_trackers/vega/api_images.c
+++ b/src/gallium/state_trackers/vega/api_images.c
@@ -32,6 +32,7 @@
 #include "vg_translate.h"
 #include "api_consts.h"
 #include "api.h"
+#include "handle.h"
 
 #include "pipe/p_context.h"
 #include "pipe/p_screen.h"
@@ -122,19 +123,19 @@ VGImage vegaCreateImage(VGImageFormat format,
       return VG_INVALID_HANDLE;
    }
 
-   return (VGImage)image_create(format, width, height);
+   return image_to_handle(image_create(format, width, height));
 }
 
 void vegaDestroyImage(VGImage image)
 {
    struct vg_context *ctx = vg_current_context();
-   struct vg_image *img = (struct vg_image *)image;
+   struct vg_image *img = handle_to_image(image);
 
    if (image == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   if (!vg_object_is_valid((void*)image, VG_OBJECT_IMAGE)) {
+   if (!vg_object_is_valid(image, VG_OBJECT_IMAGE)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -157,7 +158,7 @@ void vegaClearImage(VGImage image,
       return;
    }
 
-   img = (struct vg_image*)image;
+   img = handle_to_image(image);
 
    if (x + width < 0 || y + height < 0)
       return;
@@ -189,7 +190,7 @@ void vegaImageSubData(VGImage image,
       return;
    }
 
-   img = (struct vg_image*)(image);
+   img = handle_to_image(image);
    image_sub_data(img, data, dataStride, dataFormat,
                   x, y, width, height);
 }
@@ -216,7 +217,7 @@ void vegaGetImageSubData(VGImage image,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return;
    }
-   img = (struct vg_image*)image;
+   img = handle_to_image(image);
    image_get_sub_data(img, data, dataStride, dataFormat,
                       x, y, width, height);
 }
@@ -229,8 +230,8 @@ VGImage vegaChildImage(VGImage parent,
    struct vg_image *p;
 
    if (parent == VG_INVALID_HANDLE ||
-       !vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, (void*)parent) ||
-       !vg_object_is_valid((void*)parent, VG_OBJECT_IMAGE)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, parent) ||
+       !vg_object_is_valid(parent, VG_OBJECT_IMAGE)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return VG_INVALID_HANDLE;
    }
@@ -238,7 +239,7 @@ VGImage vegaChildImage(VGImage parent,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return VG_INVALID_HANDLE;
    }
-   p = (struct vg_image *)parent;
+   p = handle_to_image(parent);
    if (x > p->width  || y > p->height) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return VG_INVALID_HANDLE;
@@ -248,7 +249,7 @@ VGImage vegaChildImage(VGImage parent,
       return VG_INVALID_HANDLE;
    }
 
-   return (VGImage)image_child_image(p, x, y, width, height);
+   return image_to_handle(image_child_image(p, x, y, width, height));
 }
 
 VGImage vegaGetParent(VGImage image)
@@ -261,9 +262,9 @@ VGImage vegaGetParent(VGImage image)
       return VG_INVALID_HANDLE;
    }
 
-   img = (struct vg_image*)image;
+   img = handle_to_image(image);
    if (img->parent)
-      return (VGImage)img->parent;
+      return image_to_handle(img->parent);
    else
       return image;
 }
@@ -285,8 +286,8 @@ void vegaCopyImage(VGImage dst, VGint dx, VGint dy,
       return;
    }
    vg_validate_state(ctx);
-   image_copy((struct vg_image*)dst, dx, dy,
-              (struct vg_image*)src, sx, sy,
+   image_copy(handle_to_image(dst), dx, dy,
+              handle_to_image(src), sx, sy,
               width, height, dither);
 }
 
@@ -303,7 +304,7 @@ void vegaDrawImage(VGImage image)
    }
 
    vg_validate_state(ctx);
-   image_draw((struct vg_image*)image,
+   image_draw(handle_to_image(image),
          &ctx->state.vg.image_user_to_surface_matrix);
 }
 
@@ -323,7 +324,7 @@ void vegaSetPixels(VGint dx, VGint dy,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return;
    }
-   image_set_pixels(dx, dy, (struct vg_image*)src, sx, sy, width,
+   image_set_pixels(dx, dy, handle_to_image(src), sx, sy, width,
                     height);
 }
 
@@ -343,7 +344,7 @@ void vegaGetPixels(VGImage dst, VGint dx, VGint dy,
       return;
    }
 
-   img = (struct vg_image*)dst;
+   img = handle_to_image(dst);
 
    image_get_pixels(img, dx, dy,
                     sx, sy, width, height);
diff --git a/src/gallium/state_trackers/vega/api_masks.c b/src/gallium/state_trackers/vega/api_masks.c
index d96afe6638..6c52369783 100644
--- a/src/gallium/state_trackers/vega/api_masks.c
+++ b/src/gallium/state_trackers/vega/api_masks.c
@@ -28,6 +28,7 @@
 
 #include "mask.h"
 #include "api.h"
+#include "handle.h"
 #include "renderer.h"
 
 #include "vg_context.h"
@@ -56,11 +57,11 @@ void vegaMask(VGHandle mask, VGMaskOperation operation,
       mask_fill(x, y, width, height, 0.f);
    } else if (operation == VG_FILL_MASK) {
       mask_fill(x, y, width, height, 1.f);
-   } else if (vg_object_is_valid((void*)mask, VG_OBJECT_IMAGE)) {
-      struct vg_image *image = (struct vg_image *)mask;
+   } else if (vg_object_is_valid(mask, VG_OBJECT_IMAGE)) {
+      struct vg_image *image = handle_to_image(mask);
       mask_using_image(image, operation, x, y, width, height);
-   } else if (vg_object_is_valid((void*)mask, VG_OBJECT_MASK)) {
-      struct vg_mask_layer *layer = (struct vg_mask_layer *)mask;
+   } else if (vg_object_is_valid(mask, VG_OBJECT_MASK)) {
+      struct vg_mask_layer *layer = handle_to_masklayer(mask);
       mask_using_layer(layer, operation, x, y, width, height);
    } else {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
@@ -123,14 +124,14 @@ void vegaRenderToMask(VGPath path,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return;
    }
-   if (!vg_object_is_valid((void*)path, VG_OBJECT_PATH)) {
+   if (!vg_object_is_valid(path, VG_OBJECT_PATH)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
    vg_validate_state(ctx);
 
-   mask_render_to((struct path *)path, paintModes, operation);
+   mask_render_to(handle_to_path(path), paintModes, operation);
 }
 
 VGMaskLayer vegaCreateMaskLayer(VGint width, VGint height)
@@ -144,7 +145,7 @@ VGMaskLayer vegaCreateMaskLayer(VGint width, VGint height)
       return VG_INVALID_HANDLE;
    }
 
-   return (VGMaskLayer)mask_layer_create(width, height);
+   return masklayer_to_handle(mask_layer_create(width, height));
 }
 
 void vegaDestroyMaskLayer(VGMaskLayer maskLayer)
@@ -156,12 +157,12 @@ void vegaDestroyMaskLayer(VGMaskLayer maskLayer)
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   if (!vg_object_is_valid((void*)maskLayer, VG_OBJECT_MASK)) {
+   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
-   mask = (struct vg_mask_layer *)maskLayer;
+   mask = handle_to_masklayer(maskLayer);
    mask_layer_destroy(mask);
 }
 
@@ -192,12 +193,12 @@ void vegaFillMaskLayer(VGMaskLayer maskLayer,
       return;
    }
 
-   if (!vg_object_is_valid((void*)maskLayer, VG_OBJECT_MASK)) {
+   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
-   mask = (struct vg_mask_layer*)maskLayer;
+   mask = handle_to_masklayer(maskLayer);
 
    if (x + width > mask_layer_width(mask) ||
        y + height > mask_layer_height(mask)) {
@@ -226,14 +227,14 @@ void vegaCopyMask(VGMaskLayer maskLayer,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return;
    }
-   if (!vg_object_is_valid((void*)maskLayer, VG_OBJECT_MASK)) {
+   if (!vg_object_is_valid(maskLayer, VG_OBJECT_MASK)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
    vg_validate_state(ctx);
 
-   mask = (struct vg_mask_layer*)maskLayer;
+   mask = handle_to_masklayer(maskLayer);
    mask_copy(mask, sx, sy, dx, dy, width, height);
 }
 
diff --git a/src/gallium/state_trackers/vega/api_paint.c b/src/gallium/state_trackers/vega/api_paint.c
index 1411806455..6a8ae9c96c 100644
--- a/src/gallium/state_trackers/vega/api_paint.c
+++ b/src/gallium/state_trackers/vega/api_paint.c
@@ -29,24 +29,24 @@
 #include "vg_context.h"
 #include "paint.h"
 #include "api.h"
+#include "handle.h"
+
 
 VGPaint vegaCreatePaint(void)
 {
-   return (VGPaint) paint_create(vg_current_context());
+   return paint_to_handle(paint_create(vg_current_context()));
 }
 
 void vegaDestroyPaint(VGPaint p)
 {
    struct vg_context *ctx = vg_current_context();
-   struct vg_paint *paint;
 
    if (p == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
-   paint = (struct vg_paint *)p;
-   paint_destroy(paint);
+   paint_destroy(handle_to_paint(p));
 }
 
 void vegaSetPaint(VGPaint paint, VGbitfield paintModes)
@@ -55,8 +55,8 @@ void vegaSetPaint(VGPaint paint, VGbitfield paintModes)
 
    if (paint == VG_INVALID_HANDLE) {
       /* restore the default */
-      paint = (VGPaint)ctx->default_paint;
-   } else if (!vg_object_is_valid((void*)paint, VG_OBJECT_PAINT)) {
+      paint = paint_to_handle(ctx->default_paint);
+   } else if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -67,10 +67,10 @@ void vegaSetPaint(VGPaint paint, VGbitfield paintModes)
    }
 
    if (paintModes & VG_FILL_PATH) {
-      ctx->state.vg.fill_paint = (struct vg_paint *)paint;
+      ctx->state.vg.fill_paint = handle_to_paint(paint);
    }
    if (paintModes & VG_STROKE_PATH) {
-      ctx->state.vg.stroke_paint = (struct vg_paint *)paint;
+      ctx->state.vg.stroke_paint = handle_to_paint(paint);
    }
 }
 
@@ -85,11 +85,11 @@ VGPaint vegaGetPaint(VGPaintMode paintMode)
    }
 
    if (paintMode == VG_FILL_PATH)
-      paint = (VGPaint)ctx->state.vg.fill_paint;
+      paint = paint_to_handle(ctx->state.vg.fill_paint);
    else if (paintMode == VG_STROKE_PATH)
-      paint = (VGPaint)ctx->state.vg.stroke_paint;
+      paint = paint_to_handle(ctx->state.vg.stroke_paint);
 
-   if (paint == (VGPaint)ctx->default_paint)
+   if (paint == paint_to_handle(ctx->default_paint))
       paint = VG_INVALID_HANDLE;
 
    return paint;
@@ -104,14 +104,12 @@ void vegaSetColor(VGPaint paint, VGuint rgba)
       return;
    }
 
-   if (!vg_object_is_valid((void*)paint, VG_OBJECT_PAINT)) {
+   if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   {
-      struct vg_paint *p = (struct vg_paint *)paint;
-      paint_set_colori(p, rgba);
-   }
+
+   paint_set_colori(handle_to_paint(paint), rgba);
 }
 
 VGuint vegaGetColor(VGPaint paint)
@@ -125,11 +123,11 @@ VGuint vegaGetColor(VGPaint paint)
       return rgba;
    }
 
-   if (!vg_object_is_valid((void*)paint, VG_OBJECT_PAINT)) {
+   if (!vg_object_is_valid(paint, VG_OBJECT_PAINT)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return rgba;
    }
-   p = (struct vg_paint *)paint;
+   p = handle_to_paint(paint);
 
    return paint_colori(p);
 }
@@ -139,28 +137,28 @@ void vegaPaintPattern(VGPaint paint, VGImage pattern)
    struct vg_context *ctx = vg_current_context();
 
    if (paint == VG_INVALID_HANDLE ||
-       !vg_context_is_object_valid(ctx, VG_OBJECT_PAINT, (void *)paint)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_PAINT, paint)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
    if (pattern == VG_INVALID_HANDLE) {
-      paint_set_type((struct vg_paint*)paint, VG_PAINT_TYPE_COLOR);
+      paint_set_type(handle_to_paint(paint), VG_PAINT_TYPE_COLOR);
       return;
    }
 
-   if (!vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, (void *)pattern)) {
+   if (!vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, pattern)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
 
-   if (!vg_object_is_valid((void*)paint, VG_OBJECT_PAINT) ||
-       !vg_object_is_valid((void*)pattern, VG_OBJECT_IMAGE)) {
+   if (!vg_object_is_valid(paint, VG_OBJECT_PAINT) ||
+       !vg_object_is_valid(pattern, VG_OBJECT_IMAGE)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   paint_set_pattern((struct vg_paint*)paint,
-                     (struct vg_image*)pattern);
+   paint_set_pattern(handle_to_paint(paint),
+                     handle_to_image(pattern));
 }
 
diff --git a/src/gallium/state_trackers/vega/api_params.c b/src/gallium/state_trackers/vega/api_params.c
index a73b6c3eff..04c2f8c64c 100644
--- a/src/gallium/state_trackers/vega/api_params.c
+++ b/src/gallium/state_trackers/vega/api_params.c
@@ -29,6 +29,7 @@
 #include "vg_context.h"
 #include "paint.h"
 #include "path.h"
+#include "handle.h"
 #include "image.h"
 #include "text.h"
 #include "matrix.h"
@@ -972,9 +973,9 @@ void vegaSetParameterf(VGHandle object,
                        VGfloat value)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
+   void *ptr = handle_to_pointer(object);
 
-   if (!object || object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
+   if (object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -994,7 +995,7 @@ void vegaSetParameterf(VGHandle object,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       break;
    case VG_PAINT_COLOR_RAMP_PREMULTIPLIED: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       paint_set_color_ramp_premultiplied(p, value);
    }
       break;
@@ -1026,9 +1027,9 @@ void vegaSetParameteri(VGHandle object,
                        VGint value)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
+   void *ptr = handle_to_pointer(object);
 
-   if (!object || object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
+   if (object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -1039,7 +1040,7 @@ void vegaSetParameteri(VGHandle object,
           value > VG_PAINT_TYPE_PATTERN)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)ptr;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_type(paint, value);
       }
       break;
@@ -1055,12 +1056,12 @@ void vegaSetParameteri(VGHandle object,
           value > VG_COLOR_RAMP_SPREAD_REFLECT)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)ptr;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_spread_mode(paint, value);
       }
       break;
    case VG_PAINT_COLOR_RAMP_PREMULTIPLIED: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       paint_set_color_ramp_premultiplied(p, value);
    }
       break;
@@ -1069,7 +1070,7 @@ void vegaSetParameteri(VGHandle object,
           value > VG_TILE_REFLECT)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)ptr;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_pattern_tiling(paint, value);
       }
       break;
@@ -1102,10 +1103,10 @@ void vegaSetParameterfv(VGHandle object,
                         const VGfloat * values)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
+   void *ptr = handle_to_pointer(object);
    VGint real_count = vgGetParameterVectorSize(object, paramType);
 
-   if (!object || object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
+   if (object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -1132,7 +1133,7 @@ void vegaSetParameterfv(VGHandle object,
       if (count != 4)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_color(paint, values);
       }
    }
@@ -1141,7 +1142,7 @@ void vegaSetParameterfv(VGHandle object,
       if (count && count < 4)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          count = MIN2(count, VEGA_MAX_COLOR_RAMP_STOPS);
          paint_set_ramp_stops(paint, values, count);
          {
@@ -1159,7 +1160,7 @@ void vegaSetParameterfv(VGHandle object,
       if (count != 4)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_linear_gradient(paint, values);
          {
             VGint vals[4];
@@ -1176,7 +1177,7 @@ void vegaSetParameterfv(VGHandle object,
       if (count != 5)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_radial_gradient(paint, values);
          {
             VGint vals[5];
@@ -1215,10 +1216,10 @@ void vegaSetParameteriv(VGHandle object,
                         const VGint * values)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
+   void *ptr = handle_to_pointer(object);
    VGint real_count = vgGetParameterVectorSize(object, paramType);
 
-   if (!object || object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
+   if (object == VG_INVALID_HANDLE || !is_aligned(ptr)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -1245,7 +1246,7 @@ void vegaSetParameteriv(VGHandle object,
       if (count != 4)
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          paint_set_coloriv(paint, values);
       }
    }
@@ -1256,7 +1257,7 @@ void vegaSetParameteriv(VGHandle object,
       else {
          VGfloat *vals = 0;
          int i;
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          if (count) {
             vals = malloc(sizeof(VGfloat)*count);
             for (i = 0; i < count; ++i)
@@ -1274,7 +1275,7 @@ void vegaSetParameteriv(VGHandle object,
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
          VGfloat vals[4];
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          vals[0] = values[0];
          vals[1] = values[1];
          vals[2] = values[2];
@@ -1289,7 +1290,7 @@ void vegaSetParameteriv(VGHandle object,
          vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       else {
          VGfloat vals[5];
-         struct vg_paint *paint = (struct vg_paint *)object;
+         struct vg_paint *paint = handle_to_paint(object);
          vals[0] = values[0];
          vals[1] = values[1];
          vals[2] = values[2];
@@ -1318,9 +1319,8 @@ VGint vegaGetParameterVectorSize(VGHandle object,
                                  VGint paramType)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
 
-   if (!ptr || object == VG_INVALID_HANDLE) {
+   if (object == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return 0;
    }
@@ -1334,7 +1334,7 @@ VGint vegaGetParameterVectorSize(VGHandle object,
    case VG_PAINT_COLOR:
       return 4;
    case VG_PAINT_COLOR_RAMP_STOPS: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       return paint_num_ramp_stops(p);
    }
       break;
@@ -1374,9 +1374,8 @@ VGfloat vegaGetParameterf(VGHandle object,
                           VGint paramType)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
 
-   if (!ptr || object == VG_INVALID_HANDLE) {
+   if (object == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return 0;
    }
@@ -1398,11 +1397,11 @@ VGfloat vegaGetParameterf(VGHandle object,
    case VG_PATH_FORMAT:
       return VG_PATH_FORMAT_STANDARD;
    case VG_PATH_SCALE: {
-      struct path *p = (struct path*)object;
+      struct path *p = handle_to_path(object);
       return path_scale(p);
    }
    case VG_PATH_BIAS: {
-      struct path *p = (struct path*)object;
+      struct path *p = handle_to_path(object);
       return path_bias(p);
    }
    case VG_PATH_DATATYPE:
@@ -1431,30 +1430,29 @@ VGint vegaGetParameteri(VGHandle object,
                         VGint paramType)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
 
-   if (!ptr || object == VG_INVALID_HANDLE) {
+   if (object == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return 0;
    }
 
    switch(paramType) {
    case VG_PAINT_TYPE: {
-         struct vg_paint *paint = (struct vg_paint *)ptr;
+         struct vg_paint *paint = handle_to_paint(object);
          return paint_type(paint);
    }
       break;
    case VG_PAINT_COLOR_RAMP_SPREAD_MODE: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       return paint_spread_mode(p);
    }
    case VG_PAINT_COLOR_RAMP_PREMULTIPLIED: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       return paint_color_ramp_premultiplied(p);
    }
       break;
    case VG_PAINT_PATTERN_TILING_MODE: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       return paint_pattern_tiling(p);
    }
       break;
@@ -1471,38 +1469,38 @@ VGint vegaGetParameteri(VGHandle object,
    case VG_PATH_BIAS:
       return vgGetParameterf(object, paramType);
    case VG_PATH_DATATYPE: {
-      struct path *p = (struct path*)object;
+      struct path *p = handle_to_path(object);
       return path_datatype(p);
    }
    case VG_PATH_NUM_SEGMENTS: {
-      struct path *p = (struct path*)object;
+      struct path *p = handle_to_path(object);
       return path_num_segments(p);
    }
    case VG_PATH_NUM_COORDS: {
-      struct path *p = (struct path*)object;
+      struct path *p = handle_to_path(object);
       return path_num_coords(p);
    }
       break;
 
    case VG_IMAGE_FORMAT: {
-      struct vg_image *img = (struct vg_image*)object;
+      struct vg_image *img = handle_to_image(object);
       return img->format;
    }
       break;
    case VG_IMAGE_WIDTH: {
-      struct vg_image *img = (struct vg_image*)object;
+      struct vg_image *img = handle_to_image(object);
       return img->width;
    }
       break;
    case VG_IMAGE_HEIGHT: {
-      struct vg_image *img = (struct vg_image*)object;
+      struct vg_image *img = handle_to_image(object);
       return img->height;
    }
       break;
 
 #ifdef OPENVG_VERSION_1_1
    case VG_FONT_NUM_GLYPHS: {
-      struct vg_font *font = (struct vg_font*)object;
+      struct vg_font *font = handle_to_font(object);
       return font_num_glyphs(font);
    }
       break;
@@ -1521,10 +1519,9 @@ void vegaGetParameterfv(VGHandle object,
                         VGfloat * values)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
    VGint real_count = vgGetParameterVectorSize(object, paramType);
 
-   if (!ptr || object == VG_INVALID_HANDLE) {
+   if (object == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -1537,17 +1534,17 @@ void vegaGetParameterfv(VGHandle object,
 
    switch(paramType) {
    case VG_PAINT_TYPE: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       values[0] = paint_type(p);
    }
       break;
    case VG_PAINT_COLOR_RAMP_SPREAD_MODE: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       values[0] = paint_spread_mode(p);
    }
       break;
    case VG_PAINT_COLOR_RAMP_PREMULTIPLIED: {
-      struct vg_paint *p = (struct vg_paint *)object;
+      struct vg_paint *p = handle_to_paint(object);
       values[0] = paint_color_ramp_premultiplied(p);
    }
       break;
@@ -1556,22 +1553,22 @@ void vegaGetParameterfv(VGHandle object,
    }
       break;
    case VG_PAINT_COLOR: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_get_color(paint, values);
    }
       break;
    case VG_PAINT_COLOR_RAMP_STOPS: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_ramp_stops(paint, values, count);
    }
       break;
    case VG_PAINT_LINEAR_GRADIENT: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_linear_gradient(paint, values);
    }
       break;
    case VG_PAINT_RADIAL_GRADIENT: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_radial_gradient(paint, values);
    }
       break;
@@ -1608,10 +1605,9 @@ void vegaGetParameteriv(VGHandle object,
                         VGint * values)
 {
    struct vg_context *ctx = vg_current_context();
-   void *ptr = (void*)object;
    VGint real_count = vgGetParameterVectorSize(object, paramType);
 
-   if (!ptr || object == VG_INVALID_HANDLE) {
+   if (object || object == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -1633,22 +1629,22 @@ void vegaGetParameteriv(VGHandle object,
       break;
 #endif
    case VG_PAINT_COLOR: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_get_coloriv(paint, values);
    }
       break;
    case VG_PAINT_COLOR_RAMP_STOPS: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_ramp_stopsi(paint, values, count);
    }
       break;
    case VG_PAINT_LINEAR_GRADIENT: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_linear_gradienti(paint, values);
    }
       break;
    case VG_PAINT_RADIAL_GRADIENT: {
-      struct vg_paint *paint = (struct vg_paint *)object;
+      struct vg_paint *paint = handle_to_paint(object);
       paint_radial_gradienti(paint, values);
    }
       break;
diff --git a/src/gallium/state_trackers/vega/api_path.c b/src/gallium/state_trackers/vega/api_path.c
index fe57b7671d..e89c948290 100644
--- a/src/gallium/state_trackers/vega/api_path.c
+++ b/src/gallium/state_trackers/vega/api_path.c
@@ -27,6 +27,7 @@
 #include "VG/openvg.h"
 
 #include "vg_context.h"
+#include "handle.h"
 #include "path.h"
 #include "api.h"
 
@@ -55,9 +56,9 @@ VGPath vegaCreatePath(VGint pathFormat,
       return VG_INVALID_HANDLE;
    }
 
-   return (VGPath)path_create(datatype, scale, bias,
-                              segmentCapacityHint, coordCapacityHint,
-                              capabilities);
+   return path_to_handle(path_create(datatype, scale, bias,
+                                     segmentCapacityHint, coordCapacityHint,
+                                     capabilities));
 }
 
 void vegaClearPath(VGPath path, VGbitfield capabilities)
@@ -70,7 +71,7 @@ void vegaClearPath(VGPath path, VGbitfield capabilities)
       return;
    }
 
-   p = (struct path *)path;
+   p = handle_to_path(path);
    path_clear(p, capabilities);
 }
 
@@ -84,7 +85,7 @@ void vegaDestroyPath(VGPath p)
       return;
    }
 
-   path = (struct path *)p;
+   path = handle_to_path(p);
    path_destroy(path);
 }
 
@@ -100,7 +101,7 @@ void vegaRemovePathCapabilities(VGPath path,
       return;
    }
 
-   p = (struct path*)path;
+   p = handle_to_path(path);
    current = path_capabilities(p);
    path_set_capabilities(p, (current &
                              (~(capabilities & VG_PATH_CAPABILITY_ALL))));
@@ -115,7 +116,7 @@ VGbitfield vegaGetPathCapabilities(VGPath path)
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return 0;
    }
-   p = (struct path*)path;
+   p = handle_to_path(path);
    return path_capabilities(p);
 }
 
@@ -128,8 +129,8 @@ void vegaAppendPath(VGPath dstPath, VGPath srcPath)
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   src = (struct path *)srcPath;
-   dst = (struct path *)dstPath;
+   src = handle_to_path(srcPath);
+   dst = handle_to_path(dstPath);
 
    if (!(path_capabilities(src) & VG_PATH_CAPABILITY_APPEND_FROM) ||
        !(path_capabilities(dst) & VG_PATH_CAPABILITY_APPEND_TO)) {
@@ -167,7 +168,7 @@ void vegaAppendPathData(VGPath dstPath,
       }
    }
 
-   p = (struct path*)dstPath;
+   p = handle_to_path(dstPath);
 
    if (!pathData || !is_aligned_to(pathData, path_datatype_size(p))) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -199,7 +200,7 @@ void vegaModifyPathCoords(VGPath dstPath,
       return;
    }
 
-   p = (struct path *)dstPath;
+   p = handle_to_path(dstPath);
 
    if (!pathData || !is_aligned_to(pathData, path_datatype_size(p))) {
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
@@ -226,8 +227,8 @@ void vegaTransformPath(VGPath dstPath, VGPath srcPath)
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   src = (struct path *)srcPath;
-   dst = (struct path *)dstPath;
+   src = handle_to_path(srcPath);
+   dst = handle_to_path(dstPath);
 
    if (!(path_capabilities(src) & VG_PATH_CAPABILITY_TRANSFORM_FROM) ||
        !(path_capabilities(dst) & VG_PATH_CAPABILITY_TRANSFORM_TO)) {
@@ -251,9 +252,9 @@ VGboolean vegaInterpolatePath(VGPath dstPath,
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return VG_FALSE;
    }
-   dst = (struct path *)dstPath;
-   start = (struct path *)startPath;
-   end = (struct path *)endPath;
+   dst = handle_to_path(dstPath);
+   start = handle_to_path(startPath);
+   end = handle_to_path(endPath);
 
    if (!(path_capabilities(dst) & VG_PATH_CAPABILITY_INTERPOLATE_TO) ||
        !(path_capabilities(start) & VG_PATH_CAPABILITY_INTERPOLATE_FROM) ||
@@ -285,7 +286,7 @@ VGfloat vegaPathLength(VGPath path,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return -1;
    }
-   p = (struct path*)path;
+   p = handle_to_path(path);
 
    if (!(path_capabilities(p) & VG_PATH_CAPABILITY_PATH_LENGTH)) {
       vg_set_error(ctx, VG_PATH_CAPABILITY_ERROR);
@@ -330,7 +331,7 @@ void vegaPointAlongPath(VGPath path,
       return;
    }
 
-   p = (struct path*)path;
+   p = handle_to_path(path);
 
    caps = path_capabilities(p);
    if (!(caps & VG_PATH_CAPABILITY_POINT_ALONG_PATH) ||
@@ -385,7 +386,7 @@ void vegaPathBounds(VGPath path,
       return;
    }
 
-   p = (struct path*)path;
+   p = handle_to_path(path);
 
    caps = path_capabilities(p);
    if (!(caps & VG_PATH_CAPABILITY_PATH_BOUNDS)) {
@@ -422,7 +423,7 @@ void vegaPathTransformedBounds(VGPath path,
       return;
    }
 
-   p = (struct path*)path;
+   p = handle_to_path(path);
 
    caps = path_capabilities(p);
    if (!(caps & VG_PATH_CAPABILITY_PATH_TRANSFORMED_BOUNDS)) {
@@ -466,6 +467,7 @@ void vegaPathTransformedBounds(VGPath path,
 void vegaDrawPath(VGPath path, VGbitfield paintModes)
 {
    struct vg_context *ctx = vg_current_context();
+   struct path *p = handle_to_path(path);
 
    if (path == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
@@ -477,9 +479,9 @@ void vegaDrawPath(VGPath path, VGbitfield paintModes)
       return;
    }
 
-   if (path_is_empty((struct path*)path))
+   if (path_is_empty(p))
       return;
-   path_render((struct path*)path, paintModes,
+   path_render(p, paintModes,
          &ctx->state.vg.path_user_to_surface_matrix);
 }
 
diff --git a/src/gallium/state_trackers/vega/api_text.c b/src/gallium/state_trackers/vega/api_text.c
index 7c6b479409..824c763040 100644
--- a/src/gallium/state_trackers/vega/api_text.c
+++ b/src/gallium/state_trackers/vega/api_text.c
@@ -29,6 +29,7 @@
 #include "vg_context.h"
 #include "text.h"
 #include "api.h"
+#include "handle.h"
 
 #include "util/u_memory.h"
 
@@ -43,19 +44,19 @@ VGFont vegaCreateFont(VGint glyphCapacityHint)
       return VG_INVALID_HANDLE;
    }
 
-   return (VGFont) font_create(glyphCapacityHint);
+   return font_to_handle(font_create(glyphCapacityHint));
 }
 
 void vegaDestroyFont(VGFont f)
 {
-   struct vg_font *font = (struct vg_font *)f;
+   struct vg_font *font = handle_to_font(f);
    struct vg_context *ctx = vg_current_context();
 
    if (f == VG_INVALID_HANDLE) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
-   if (!vg_object_is_valid((void *) font, VG_OBJECT_FONT)) {
+   if (!vg_object_is_valid(f, VG_OBJECT_FONT)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -75,7 +76,7 @@ void vegaSetGlyphToPath(VGFont font,
    struct vg_font *f;
 
    if (font == VG_INVALID_HANDLE ||
-       !vg_context_is_object_valid(ctx, VG_OBJECT_FONT, (void *)font)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_FONT, font)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -85,13 +86,13 @@ void vegaSetGlyphToPath(VGFont font,
       return;
    }
    if (path != VG_INVALID_HANDLE &&
-       !vg_context_is_object_valid(ctx, VG_OBJECT_PATH, (void *)path)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_PATH, path)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
-   pathObj = (struct path*) path;
-   f = (struct vg_font*) font;
+   pathObj = handle_to_path(path);
+   f = handle_to_font(font);
 
    font_set_glyph_to_path(f, glyphIndex, pathObj,
          isHinted, glyphOrigin, escapement);
@@ -108,7 +109,7 @@ void vegaSetGlyphToImage(VGFont font,
    struct vg_font *f;
 
    if (font == VG_INVALID_HANDLE ||
-       !vg_context_is_object_valid(ctx, VG_OBJECT_FONT, (void *)font)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_FONT, font)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
@@ -118,13 +119,13 @@ void vegaSetGlyphToImage(VGFont font,
       return;
    }
    if (image != VG_INVALID_HANDLE &&
-       !vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, (void *)image)) {
+       !vg_context_is_object_valid(ctx, VG_OBJECT_IMAGE, image)) {
       vg_set_error(ctx, VG_BAD_HANDLE_ERROR);
       return;
    }
 
-   img_obj = (struct vg_image*)image;
-   f = (struct vg_font*)font;
+   img_obj = handle_to_image(image);
+   f = handle_to_font(font);
 
    font_set_glyph_to_image(f, glyphIndex, img_obj, glyphOrigin, escapement);
 }
@@ -140,7 +141,7 @@ void vegaClearGlyph(VGFont font,
       return;
    }
 
-   f = (struct vg_font*) font;
+   f = handle_to_font(font);
 
    font_clear_glyph(f, glyphIndex);
 }
@@ -161,7 +162,7 @@ void vegaDrawGlyph(VGFont font,
       vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR);
       return;
    }
-   f = (struct vg_font*)font;
+   f = handle_to_font(font);
 
    font_draw_glyph(f, glyphIndex, paintModes, allowAutoHinting);
 }
@@ -199,7 +200,7 @@ void vegaDrawGlyphs(VGFont font,
       return;
    }
 
-   f = (struct vg_font*)font;
+   f = handle_to_font(font);
 
    font_draw_glyphs(f, glyphCount, glyphIndices,
          adjustments_x, adjustments_y, paintModes, allowAutoHinting);
diff --git a/src/gallium/state_trackers/vega/handle.h b/src/gallium/state_trackers/vega/handle.h
new file mode 100644
index 0000000000..7023004f4f
--- /dev/null
+++ b/src/gallium/state_trackers/vega/handle.h
@@ -0,0 +1,130 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.  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"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+
+/**
+ * Convert opaque VG object handles into pointers and vice versa.
+ * XXX This is not yet 64-bit safe!  All VG handles are 32 bits in size.
+ */
+
+
+#ifndef HANDLE_H
+#define HANDLE_H
+
+#include "VG/openvg.h"
+#include "pipe/p_compiler.h"
+
+
+struct vg_mask_layer;
+struct vg_font;
+struct vg_image;
+struct vg_paint;
+struct path;
+
+
+static INLINE VGHandle
+image_to_handle(struct vg_image *img)
+{
+   return (VGHandle) img;
+}
+
+
+static INLINE VGHandle
+masklayer_to_handle(struct vg_mask_layer *mask)
+{
+   return (VGHandle) mask;
+}
+
+
+static INLINE VGHandle
+font_to_handle(struct vg_font *font)
+{
+   return (VGHandle) font;
+}
+
+static INLINE VGHandle
+paint_to_handle(struct vg_paint *paint)
+{
+   return (VGHandle) paint;
+}
+
+static INLINE VGHandle
+path_to_handle(struct path *path)
+{
+   return (VGHandle) path;
+}
+
+
+static INLINE void *
+handle_to_pointer(VGHandle h)
+{
+   return (void *) h;
+}
+
+
+static INLINE struct vg_font *
+handle_to_font(VGHandle h)
+{
+   return (struct vg_font *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_image *
+handle_to_image(VGHandle h)
+{
+   return (struct vg_image *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_mask_layer *
+handle_to_masklayer(VGHandle h)
+{
+   return (struct vg_mask_layer *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_object *
+handle_to_object(VGHandle h)
+{
+   return (struct vg_object *) handle_to_pointer(h);
+}
+
+
+static INLINE struct vg_paint *
+handle_to_paint(VGHandle h)
+{
+   return (struct vg_paint *) handle_to_pointer(h);
+}
+
+
+static INLINE struct path *
+handle_to_path(VGHandle h)
+{
+   return (struct path *) handle_to_pointer(h);
+}
+
+
+#endif /* HANDLE_H */
diff --git a/src/gallium/state_trackers/vega/vg_context.c b/src/gallium/state_trackers/vega/vg_context.c
index f36f55d6c8..a573577fa2 100644
--- a/src/gallium/state_trackers/vega/vg_context.c
+++ b/src/gallium/state_trackers/vega/vg_context.c
@@ -33,6 +33,7 @@
 #include "vg_manager.h"
 #include "api.h"
 #include "mask.h"
+#include "handle.h"
 
 #include "pipe/p_context.h"
 #include "util/u_inlines.h"
@@ -186,13 +187,13 @@ void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_objec
 
 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
                                 enum vg_object_type type,
-                                void *ptr)
+                                VGHandle object)
 {
     if (ctx) {
        struct cso_hash *hash = ctx->owned_objects[type];
        if (!hash)
           return VG_FALSE;
-       return cso_hash_contains(hash, (unsigned)(long)ptr);
+       return cso_hash_contains(hash, (unsigned)(long)object);
     }
     return VG_FALSE;
 }
@@ -412,10 +413,10 @@ void vg_validate_state(struct vg_context *ctx)
    shader_set_color_transform(ctx->shader, ctx->state.vg.color_transform);
 }
 
-VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type)
+VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type)
 {
-   struct vg_object *obj = ptr;
-   if (ptr && is_aligned(obj) && obj->type == type)
+   struct vg_object *obj = handle_to_object(object);
+   if (object && is_aligned(obj) && obj->type == type)
       return VG_TRUE;
    else
       return VG_FALSE;
diff --git a/src/gallium/state_trackers/vega/vg_context.h b/src/gallium/state_trackers/vega/vg_context.h
index d616a20a3d..bee7accf01 100644
--- a/src/gallium/state_trackers/vega/vg_context.h
+++ b/src/gallium/state_trackers/vega/vg_context.h
@@ -134,7 +134,7 @@ struct vg_object {
    struct vg_context *ctx;
 };
 void vg_init_object(struct vg_object *obj, struct vg_context *ctx, enum vg_object_type type);
-VGboolean vg_object_is_valid(void *ptr, enum vg_object_type type);
+VGboolean vg_object_is_valid(VGHandle object, enum vg_object_type type);
 
 struct vg_context *vg_create_context(struct pipe_context *pipe,
                                      const void *visual,
@@ -145,7 +145,7 @@ void vg_set_current_context(struct vg_context *ctx);
 
 VGboolean vg_context_is_object_valid(struct vg_context *ctx,
                                      enum vg_object_type type,
-                                     void *ptr);
+                                     VGHandle object);
 void vg_context_add_object(struct vg_context *ctx,
                            enum vg_object_type type,
                            void *ptr);
diff --git a/src/gallium/state_trackers/vega/vgu.c b/src/gallium/state_trackers/vega/vgu.c
index 7dc51c5599..a96f2e152f 100644
--- a/src/gallium/state_trackers/vega/vgu.c
+++ b/src/gallium/state_trackers/vega/vgu.c
@@ -29,6 +29,7 @@
 
 #include "matrix.h"
 #include "path.h"
+#include "handle.h"
 
 #include "util/u_debug.h"
 #include "util/u_pointer.h"
@@ -54,7 +55,7 @@ static void vgu_append_float_coords(VGPath path,
                                     VGint num_coords)
 {
    VGubyte common_data[40 * sizeof(VGfloat)];
-   struct path *p = (struct path *)path;
+   struct path *p = handle_to_path(path);
 
    vg_float_to_datatype(path_datatype(p), common_data, coords, num_coords);
    vgAppendPathData(path, num_cmds, cmds, common_data);