On 11/06/2012 03:15 PM, Dave Airlie wrote:
This adds the mesa core + texture + fbo support for the
texture cube map array extension.

Signed-off-by: Dave Airlie<airl...@redhat.com>
---
  src/mesa/main/fbobject.c   |  9 ++++-
  src/mesa/main/mtypes.h     |  2 ++
  src/mesa/main/shared.c     |  1 +
  src/mesa/main/teximage.c   | 85 +++++++++++++++++++++++++++++++++++++++++++---
  src/mesa/main/texobj.c     | 11 +++++-
  src/mesa/main/texparam.c   |  5 +++
  src/mesa/main/texstate.c   |  1 +
  src/mesa/main/texstorage.c |  3 ++
  src/mesa/main/texstore.c   |  7 ++++
  9 files changed, 118 insertions(+), 6 deletions(-)

diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index 0758d55..0da8975 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -2025,7 +2025,8 @@ framebuffer_texture(struct gl_context *ctx, const char 
*caller, GLenum target,
               */
              err = (texObj->Target != GL_TEXTURE_3D)&&
                  (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT)&&
-                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
+                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT)&&
+                (texObj->Target != GL_TEXTURE_CUBE_MAP_ARRAY);
           }
           else {
              /* Make sure textarget is consistent with the texture's type */
@@ -2065,6 +2066,12 @@ framebuffer_texture(struct gl_context *ctx, const char 
*caller, GLenum target,
                          "glFramebufferTexture%sEXT(layer)", caller);
              return;
           }
+      } else if (texObj->Target == GL_TEXTURE_CUBE_MAP_ARRAY) {
+         if (zoffset<  0 || zoffset / 6>= ctx->Const.MaxArrayTextureLayers) {
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glFramebufferTexture%sEXT(layer)", caller);
+            return;
+         }
        }

        maxLevelsTarget = textarget ? textarget : texObj->Target;
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index dcfb7e5..b99e710 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1146,6 +1146,7 @@ struct gl_stencil_attrib
   */
  typedef enum
  {
+   TEXTURE_CUBE_ARRAY_INDEX,
     TEXTURE_BUFFER_INDEX,
     TEXTURE_2D_ARRAY_INDEX,
     TEXTURE_1D_ARRAY_INDEX,
@@ -1164,6 +1165,7 @@ typedef enum
   * Used for Texture.Unit[]._ReallyEnabled flags.
   */
  /*@{*/
+#define TEXTURE_CUBE_ARRAY_BIT (1<<  TEXTURE_CUBE_ARRAY_INDEX)
  #define TEXTURE_BUFFER_BIT   (1<<  TEXTURE_BUFFER_INDEX)
  #define TEXTURE_2D_ARRAY_BIT (1<<  TEXTURE_2D_ARRAY_INDEX)
  #define TEXTURE_1D_ARRAY_BIT (1<<  TEXTURE_1D_ARRAY_INDEX)
diff --git a/src/mesa/main/shared.c b/src/mesa/main/shared.c
index 2d2f7bd..ba82628 100644
--- a/src/mesa/main/shared.c
+++ b/src/mesa/main/shared.c
@@ -90,6 +90,7 @@ _mesa_alloc_shared_state(struct gl_context *ctx)
     for (i = 0; i<  NUM_TEXTURE_TARGETS; i++) {
        /* NOTE: the order of these enums matches the TEXTURE_x_INDEX values */
        static const GLenum targets[] = {
+         GL_TEXTURE_CUBE_MAP_ARRAY,
           GL_TEXTURE_BUFFER,
           GL_TEXTURE_2D_ARRAY_EXT,
           GL_TEXTURE_1D_ARRAY_EXT,
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index b889317..a0de006 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -649,7 +649,7 @@ _mesa_is_proxy_texture(GLenum target)
      * NUM_TEXTURE_TARGETS should match number of terms below, except there's 
no
      * proxy for GL_TEXTURE_BUFFER and GL_TEXTURE_EXTERNAL_OES.
      */
-   assert(NUM_TEXTURE_TARGETS == 7 + 2);
+   assert(NUM_TEXTURE_TARGETS == 8 + 2);

     return (target == GL_PROXY_TEXTURE_1D ||
             target == GL_PROXY_TEXTURE_2D ||
@@ -657,7 +657,8 @@ _mesa_is_proxy_texture(GLenum target)
             target == GL_PROXY_TEXTURE_CUBE_MAP_ARB ||
             target == GL_PROXY_TEXTURE_RECTANGLE_NV ||
             target == GL_PROXY_TEXTURE_1D_ARRAY_EXT ||
-           target == GL_PROXY_TEXTURE_2D_ARRAY_EXT);
+           target == GL_PROXY_TEXTURE_2D_ARRAY_EXT ||
+           target == GL_PROXY_TEXTURE_CUBE_MAP_ARRAY);
  }


@@ -695,6 +696,9 @@ _mesa_get_proxy_target(GLenum target)
     case GL_TEXTURE_2D_ARRAY_EXT:
     case GL_PROXY_TEXTURE_2D_ARRAY_EXT:
        return GL_PROXY_TEXTURE_2D_ARRAY_EXT;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+      return GL_PROXY_TEXTURE_CUBE_MAP_ARRAY;
     default:
        _mesa_problem(NULL, "unexpected target in _mesa_get_proxy_target()");
        return 0;
@@ -745,6 +749,12 @@ _mesa_select_tex_object(struct gl_context *ctx,
        case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
           return ctx->Extensions.ARB_texture_cube_map
                  ? ctx->Texture.ProxyTex[TEXTURE_CUBE_INDEX] : NULL;
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array
+                ? texUnit->CurrentTex[TEXTURE_CUBE_ARRAY_INDEX] : NULL;
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array
+                ? ctx->Texture.ProxyTex[TEXTURE_CUBE_ARRAY_INDEX] : NULL;
        case GL_TEXTURE_RECTANGLE_NV:
           return ctx->Extensions.NV_texture_rectangle
                  ? texUnit->CurrentTex[TEXTURE_RECT_INDEX] : NULL;
@@ -891,6 +901,11 @@ get_proxy_tex_image(struct gl_context *ctx, GLenum target, 
GLint level)
           return NULL;
        texIndex = TEXTURE_2D_ARRAY_INDEX;
        break;
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+      if (level>= ctx->Const.MaxCubeTextureLevels)
+         return NULL;
+      texIndex = TEXTURE_CUBE_ARRAY_INDEX;
+      break;
     default:
        return NULL;
     }
@@ -953,6 +968,10 @@ _mesa_max_texture_levels(struct gl_context *ctx, GLenum 
target)
        return (ctx->Extensions.MESA_texture_array ||
                ctx->Extensions.EXT_texture_array)
           ? ctx->Const.MaxTextureLevels : 0;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+      return ctx->Extensions.ARB_texture_cube_map_array
+         ? ctx->Const.MaxCubeTextureLevels : 0;
     case GL_TEXTURE_BUFFER:
        return _mesa_is_desktop_gl(ctx)
           &&  ctx->Extensions.ARB_texture_buffer_object
@@ -995,6 +1014,8 @@ _mesa_get_texture_dimensions(GLenum target)
     case GL_PROXY_TEXTURE_3D:
     case GL_TEXTURE_2D_ARRAY:
     case GL_PROXY_TEXTURE_2D_ARRAY:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
        return 3;
     case GL_TEXTURE_BUFFER:
        /* fall-through */
@@ -1186,6 +1207,13 @@ _mesa_init_teximage_fields(struct gl_context *ctx,
        img->Depth2 = depth - 2 * border;   /* == 1<<  img->DepthLog2; */
        img->DepthLog2 = _mesa_logbase2(img->Depth2);
        break;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+      img->Height2 = height - 2 * border; /* == 1<<  img->HeightLog2; */
+      img->HeightLog2 = _mesa_logbase2(img->Height2);
+      img->Depth2 = depth; /* no border */
+      img->DepthLog2 = 0; /* not used */
+      break;
     default:
        _mesa_problem(NULL, "invalid target 0x%x in 
_mesa_init_teximage_fields()",
                      target);
@@ -1341,6 +1369,24 @@ _mesa_legal_texture_dimensions(struct gl_context *ctx, 
GLenum target,
        }
        return GL_TRUE;

+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+      maxSize = 1<<  (ctx->Const.MaxCubeTextureLevels - 1);
+      if (width<  2 * border || width>  2 * border + maxSize)
+         return GL_FALSE;
+      if (height<  2 * border || height>  2 * border + maxSize)
+         return GL_FALSE;
+      if (depth<  1 || depth>  ctx->Const.MaxArrayTextureLayers)
+         return GL_FALSE;
+      if (level>= ctx->Const.MaxCubeTextureLevels)
+         return GL_FALSE;
+      if (!ctx->Extensions.ARB_texture_non_power_of_two) {
+         if (width>  0&&  !_mesa_is_pow_two(width - 2 * border))
+            return GL_FALSE;
+         if (height>  0&&  !_mesa_is_pow_two(height - 2 * border))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
     default:
        _mesa_problem(ctx, "Invalid target in 
_mesa_legal_texture_dimensions()");
        return GL_FALSE;
@@ -1549,6 +1595,9 @@ target_can_be_compressed(const struct gl_context *ctx, 
GLenum target,
     case GL_TEXTURE_2D_ARRAY_EXT:
        return (ctx->Extensions.MESA_texture_array ||
                ctx->Extensions.EXT_texture_array);
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+      return ctx->Extensions.ARB_texture_cube_map_array;
     default:
        return GL_FALSE;
     }
@@ -1614,6 +1663,9 @@ legal_teximage_target(struct gl_context *ctx, GLuint 
dims, GLenum target)
           return _mesa_is_desktop_gl(ctx)
              &&  (ctx->Extensions.MESA_texture_array ||
                  ctx->Extensions.EXT_texture_array);
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array;
        default:
           return GL_FALSE;
        }
@@ -1666,6 +1718,9 @@ legal_texsubimage_target(struct gl_context *ctx, GLuint 
dims, GLenum target)
                   &&  (ctx->Extensions.MESA_texture_array ||
                       ctx->Extensions.EXT_texture_array))
              || _mesa_is_gles3(ctx);
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array;
        default:
           return GL_FALSE;
        }
@@ -1782,6 +1837,11 @@ texture_error_check( struct gl_context *ctx,
      * Formats and types that require additional extensions (e.g., GL_FLOAT
      * requires GL_OES_texture_float) are filtered elsewhere.
      */
+
+   /*
+    * Use the proxy texture driver hook to see if the size/level/etc are
+    * legal.
+    */

That comment seems to be in the wrong place. The code after it is concerned with format/type checking.


     if (_mesa_is_gles(ctx)&&  !_mesa_is_gles3(ctx)) {
        if (format != internalFormat) {
           _mesa_error(ctx, GL_INVALID_OPERATION,
@@ -1810,6 +1870,20 @@ texture_error_check( struct gl_context *ctx,
        return GL_TRUE;
     }

+   if ((target == GL_PROXY_TEXTURE_CUBE_MAP_ARRAY ||
+        target == GL_TEXTURE_CUBE_MAP_ARRAY)&&  width != height) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTexImage3D(cube array width != height)");
+      return GL_TRUE;
+   }
+
+   if ((target == GL_PROXY_TEXTURE_CUBE_MAP_ARRAY ||
+        target == GL_TEXTURE_CUBE_MAP_ARRAY)&&  (depth % 6)) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTexImage3D(cube array depth not multiple of 6)");
+      return GL_TRUE;
+   }
+
     /* Check internalFormat */
     if (_mesa_base_tex_format(ctx, internalFormat)<  0) {
        _mesa_error(ctx, GL_INVALID_VALUE,
@@ -1886,7 +1960,10 @@ texture_error_check( struct gl_context *ctx,
            target != GL_TEXTURE_RECTANGLE_ARB&&
            target != GL_PROXY_TEXTURE_RECTANGLE_ARB&&
           !((_mesa_is_cube_face(target) || target == 
GL_PROXY_TEXTURE_CUBE_MAP)&&
-           (ctx->Version>= 30 || ctx->Extensions.EXT_gpu_shader4))) {
+           (ctx->Version>= 30 || ctx->Extensions.EXT_gpu_shader4))&&
+          !((target == GL_TEXTURE_CUBE_MAP_ARRAY ||
+             target == GL_PROXY_TEXTURE_CUBE_MAP_ARRAY)&&
+            ctx->Extensions.ARB_texture_cube_map_array)) {
           _mesa_error(ctx, GL_INVALID_ENUM,
                       "glTexImage%dD(bad target for depth texture)",
                       dimensions);
@@ -2684,7 +2761,7 @@ strip_texture_border(GLenum target,
        *height = *height - 2;  /* reduce the height by two border pixels */
     }

-   if (*depth>= 3&&  target != GL_TEXTURE_2D_ARRAY) {
+   if (*depth>= 3&&  target != GL_TEXTURE_2D_ARRAY&&  target != 
GL_TEXTURE_CUBE_MAP_ARRAY) {
        unpackNew->SkipImages++;  /* skip the border */
        *depth = *depth - 2;      /* reduce the depth by two border pixels */
     }
diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 8525ff9..c083c72 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -108,6 +108,7 @@ _mesa_initialize_texture_object( struct gl_texture_object 
*obj,
            target == GL_TEXTURE_1D_ARRAY_EXT ||
            target == GL_TEXTURE_2D_ARRAY_EXT ||
            target == GL_TEXTURE_EXTERNAL_OES ||
+          target == GL_TEXTURE_CUBE_MAP_ARRAY ||
            target == GL_TEXTURE_BUFFER);

     memset(obj, 0, sizeof(*obj));
@@ -316,6 +317,7 @@ valid_texture_object(const struct gl_texture_object *tex)
     case GL_TEXTURE_2D_ARRAY_EXT:
     case GL_TEXTURE_BUFFER:
     case GL_TEXTURE_EXTERNAL_OES:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
        return GL_TRUE;
     case 0x99:
        _mesa_problem(NULL, "invalid reference to a deleted texture object");
@@ -515,6 +517,7 @@ _mesa_test_texobj_completeness( const struct gl_context 
*ctx,
        maxLevels = ctx->Const.Max3DTextureLevels;
        break;
     case GL_TEXTURE_CUBE_MAP_ARB:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
        maxLog2 = MAX2(baseImage->WidthLog2,
                       baseImage->HeightLog2);
        maxLevels = ctx->Const.MaxCubeTextureLevels;
@@ -599,7 +602,7 @@ _mesa_test_texobj_completeness( const struct gl_context 
*ctx,
           if (height>  1&&  t->Target != GL_TEXTURE_1D_ARRAY) {
              height /= 2;
           }
-         if (depth>  1&&  t->Target != GL_TEXTURE_2D_ARRAY) {
+         if (depth>  1&&  t->Target != GL_TEXTURE_2D_ARRAY&&  t->Target != 
GL_TEXTURE_CUBE_MAP_ARRAY) {
              depth /= 2;
           }

@@ -768,6 +771,10 @@ _mesa_get_fallback_texture(struct gl_context *ctx, 
gl_texture_index tex)
           dims = 0;
           target = GL_TEXTURE_BUFFER;
           break;
+     case TEXTURE_CUBE_ARRAY_INDEX:
+         dims = 3;
+         target = GL_TEXTURE_CUBE_MAP_ARRAY;
+         break;
        case TEXTURE_EXTERNAL_INDEX:
           dims = 2;
           target = GL_TEXTURE_EXTERNAL_OES;
@@ -1155,6 +1162,8 @@ target_enum_to_index(struct gl_context *ctx, GLenum 
target)
     case GL_TEXTURE_EXTERNAL_OES:
        return _mesa_is_gles(ctx)&&  ctx->Extensions.OES_EGL_image_external
           ? TEXTURE_EXTERNAL_INDEX : -1;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+      return TEXTURE_CUBE_ARRAY_INDEX;
     default:
        return -1;
     }
diff --git a/src/mesa/main/texparam.c b/src/mesa/main/texparam.c
index f73e2b5..8ce0546 100644
--- a/src/mesa/main/texparam.c
+++ b/src/mesa/main/texparam.c
@@ -170,6 +170,11 @@ get_texobj(struct gl_context *ctx, GLenum target, 
GLboolean get)
           return texUnit->CurrentTex[TEXTURE_EXTERNAL_INDEX];
        }
        break;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+      if (ctx->Extensions.ARB_texture_cube_map_array) {
+         return texUnit->CurrentTex[TEXTURE_CUBE_ARRAY_INDEX];
+      }
+      break;
     default:
        ;
     }
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 0e5ba44..1f76508 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -706,6 +706,7 @@ alloc_proxy_textures( struct gl_context *ctx )
      * values!
      */
     static const GLenum targets[] = {
+      GL_TEXTURE_CUBE_MAP_ARRAY,
        GL_TEXTURE_BUFFER,
        GL_TEXTURE_2D_ARRAY_EXT,
        GL_TEXTURE_1D_ARRAY_EXT,
diff --git a/src/mesa/main/texstorage.c b/src/mesa/main/texstorage.c
index 968f6f9..9e0b543 100644
--- a/src/mesa/main/texstorage.c
+++ b/src/mesa/main/texstorage.c
@@ -87,6 +87,9 @@ legal_texobj_target(struct gl_context *ctx, GLuint dims, 
GLenum target)
        case GL_PROXY_TEXTURE_2D_ARRAY:
           return (ctx->Extensions.MESA_texture_array ||
                   ctx->Extensions.EXT_texture_array);
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+      case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
+         return ctx->Extensions.ARB_texture_cube_map_array;
        default:
           return GL_FALSE;
        }
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index e691455..1c08810 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -4273,6 +4273,7 @@ store_texsubimage(struct gl_context *ctx,
        dims = 1;
        break;
     case GL_TEXTURE_2D_ARRAY:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
     case GL_TEXTURE_3D:
        dims = 3;
        break;
@@ -4324,6 +4325,12 @@ store_texsubimage(struct gl_context *ctx,
        srcImageStride = _mesa_image_image_stride(packing, width, height,
                                                  format, type);
        break;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+      numSlices = depth;
+      sliceOffset = zoffset;
+      srcImageStride = _mesa_image_image_stride(packing, width, height,
+                                                format, type);
+      break;
     default:
        _mesa_warning(ctx, "Unexpected target 0x%x in store_texsubimage()", 
target);
        return;

I think you missed updating the _mesa_num_tex_faces() function in texobj.h:

/**
 * Return number of faces for a texture target.  This will be 6 for
 * cube maps (and cube map arrays) and 1 otherwise.
 */
static inline GLuint
_mesa_num_tex_faces(GLenum target)
{
   switch (target) {
   case GL_TEXTURE_CUBE_MAP:
   case GL_PROXY_TEXTURE_CUBE_MAP:
      return 6;
   default:
      return 1;
   }
}

I'm surprised that you haven't seen any failures if this wasn't updated.

Anyway, this looks really great.

For patches 1-4 and 6-7: Reviewed-by: Brian Paul <bri...@vmware.com>

I'll try to look at the rest tomorrow.

-Brian

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