mesa: add fbo/texture support for ARB_texture_cube_map_array (v2)

This adds the mesa core + texture + fbo support for the
texture cube map array extension.

v2:
add comment to _mesa_num_tex_faces related to cube map arrays (Brian)
drop wrong comment cut-n-paste (Brian)
fix / 6 maximum check issue (Kenneth)
coalsece some array case statements (Kenneth)

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 8525ff9fd41..c083c72e2aa 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;
    }