st/nine: Add ATI1 and ATI2 support

Adds ATI1 and ATI2 support to nine.

They map to PIPE_FORMAT_RGTC1_UNORM and PIPE_FORMAT_RGTC2_UNORM,
but need special handling.

Reviewed-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Axel Davy <axel.davy@ens.fr>
Signed-off-by: Xavier Bouchoux <xavierb@gmail.com>

Cc: "10.4" <mesa-stable@lists.freedesktop.org>

src/gallium/state_trackers/nine/adapter9.c

@@ -302,6 +302,9 @@ NineAdapter9_CheckDeviceFormat( struct NineAdapter9 *This,
         return D3DERR_NOTAVAILABLE;
     }
 
+    /* we support ATI1 and ATI2 hack only for 2D textures */
+    if (RType != D3DRTYPE_TEXTURE && (CheckFormat == D3DFMT_ATI1 || CheckFormat == D3DFMT_ATI2))
+        return D3DERR_NOTAVAILABLE;
     /* if (Usage & D3DUSAGE_NONSECURE) { don't know the implications of this } */
     /* if (Usage & D3DUSAGE_SOFTWAREPROCESSING) { we can always support this } */
 

src/gallium/state_trackers/nine/basetexture9.c

@@ -492,9 +492,12 @@ NineBaseTexture9_UpdateSamplerView( struct NineBaseTexture9 *This,
             swizzle[2] = PIPE_SWIZZLE_RED;
             swizzle[3] = PIPE_SWIZZLE_RED;
         }
-    } else if (resource->format != PIPE_FORMAT_A8_UNORM) {
-        /* A8 is the only exception that should have 0.0 as default values
-         * for RGB. It is already what gallium does. All the other ones
+    } else if (resource->format != PIPE_FORMAT_A8_UNORM &&
+               resource->format != PIPE_FORMAT_RGTC1_UNORM) {
+        /* exceptions:
+         * A8 should have 0.0 as default values for RGB.
+         * ATI1/RGTC1 should be r 0 0 1 (tested on windows).
+         * It is already what gallium does. All the other ones
          * should have 1.0 for non-defined values */
         for (i = 0; i < 4; i++) {
             if (SWIZZLE_TO_REPLACE(desc->swizzle[i]))

src/gallium/state_trackers/nine/cubetexture9.c

@@ -63,6 +63,10 @@ NineCubeTexture9_ctor( struct NineCubeTexture9 *This,
         return D3DERR_INVALIDCALL;
     }
 
+    /* We support ATI1 and ATI2 hacks only for 2D textures */
+    if (Format == D3DFMT_ATI1 || Format == D3DFMT_ATI2)
+        return D3DERR_INVALIDCALL;
+
     info->screen = pParams->device->screen;
     info->target = PIPE_TEXTURE_CUBE;
     info->format = pf;

src/gallium/state_trackers/nine/nine_pipe.h

@@ -185,6 +185,8 @@ d3d9_to_pipe_format(D3DFORMAT format)
     case D3DFMT_DXT3: return PIPE_FORMAT_DXT3_RGBA;
     case D3DFMT_DXT4: return PIPE_FORMAT_DXT5_RGBA; /* XXX */
     case D3DFMT_DXT5: return PIPE_FORMAT_DXT5_RGBA;
+    case D3DFMT_ATI1: return PIPE_FORMAT_RGTC1_UNORM;
+    case D3DFMT_ATI2: return PIPE_FORMAT_RGTC2_UNORM;
     case D3DFMT_UYVY: return PIPE_FORMAT_UYVY;
     case D3DFMT_YUY2: return PIPE_FORMAT_YUYV; /* XXX check */
     case D3DFMT_NV12: return PIPE_FORMAT_NV12;

src/gallium/state_trackers/nine/surface9.c

@@ -38,6 +38,8 @@
 
 #define DBG_CHANNEL DBG_SURFACE
 
+#define is_ATI1_ATI2(format) (format == PIPE_FORMAT_RGTC1_UNORM || format == PIPE_FORMAT_RGTC2_UNORM)
+
 HRESULT
 NineSurface9_ctor( struct NineSurface9 *This,
                    struct NineUnknownParams *pParams,
@@ -382,10 +384,19 @@ NineSurface9_LockRect( struct NineSurface9 *This,
 
     if (This->data) {
         DBG("returning system memory\n");
-
-        pLockedRect->Pitch = This->stride;
-        pLockedRect->pBits = NineSurface9_GetSystemMemPointer(This,
-                                                              box.x, box.y);
+        /* ATI1 and ATI2 need special handling, because of d3d9 bug.
+         * We must advertise to the application as if it is uncompressed
+         * and bpp 8, and the app has a workaround to work with the fact
+         * that it is actually compressed. */
+        if (is_ATI1_ATI2(This->base.info.format)) {
+            pLockedRect->Pitch = This->desc.Height;
+            pLockedRect->pBits = This->data + box.y * This->desc.Height + box.x;
+        } else {
+            pLockedRect->Pitch = This->stride;
+            pLockedRect->pBits = NineSurface9_GetSystemMemPointer(This,
+                                                                  box.x,
+                                                                  box.y);
+        }
     } else {
         DBG("mapping pipe_resource %p (level=%u usage=%x)\n",
             resource, This->level, usage);

src/gallium/state_trackers/nine/volumetexture9.c

@@ -65,6 +65,10 @@ NineVolumeTexture9_ctor( struct NineVolumeTexture9 *This,
         return D3DERR_INVALIDCALL;
     }
 
+    /* We support ATI1 and ATI2 hacks only for 2D textures */
+    if (Format == D3DFMT_ATI1 || Format == D3DFMT_ATI2)
+        return D3DERR_INVALIDCALL;
+
     info->screen = pParams->device->screen;
     info->target = PIPE_TEXTURE_3D;
     info->format = pf;