vrend: rename internal texture flags and use CAN_TEXTURE_STORAGE correctly

The name for the internal texture properies flags VIRGL_BIND_NEED-SWIZZLE
and VIRGL_BIND_CAN_TEXTURE_STORAGE is misleading, and the latter flag was
even mis-using the binding member of the texture format structure.

Rename these flags to make it clear that these are not binding flags and
correctly use the 'flags' member for CAN_TEXTURE_STORAGE. In addition, drop
adding the NEED_SWIZZLE flag to the binding in the alpha texture emulation.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>

src/vrend_blitter.c

@@ -414,7 +414,7 @@ static GLuint blit_get_frag_tex_col(struct vrend_blitter_ctx *blit_ctx,
 {
    assert(pipe_tex_target < PIPE_MAX_TEXTURE_TYPES);
 
-   bool needs_swizzle = dst_entry->flags & VIRGL_BIND_NEED_SWIZZLE;
+   bool needs_swizzle = dst_entry->flags & VIRGL_TEXTURE_NEED_SWIZZLE;
 
    if (needs_swizzle || nr_samples > 1) {
       const uint8_t *swizzle = needs_swizzle ? dst_entry->swizzle : NULL;
@@ -809,7 +809,7 @@ void vrend_renderer_blit_gl(struct vrend_context *ctx,
 
    glBindTexture(src_res->target, blit_views[0]);
 
-   if (src_entry->flags & VIRGL_BIND_NEED_SWIZZLE) {
+   if (src_entry->flags & VIRGL_TEXTURE_NEED_SWIZZLE) {
       glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_R,
                       to_gl_swizzle(src_entry->swizzle[0]));
       glTexParameteri(src_res->target, GL_TEXTURE_SWIZZLE_G,

src/vrend_formats.c

@@ -348,7 +348,7 @@ static void vrend_add_formats(struct vrend_format_table *table, int num_entries)
     if (status == GL_INVALID_VALUE || status == GL_INVALID_ENUM || status == GL_INVALID_OPERATION) {
       struct vrend_format_table *entry = NULL;
       uint8_t swizzle[4];
-      binding = VIRGL_BIND_SAMPLER_VIEW | VIRGL_BIND_RENDER_TARGET | VIRGL_BIND_NEED_SWIZZLE;
+      binding = VIRGL_BIND_SAMPLER_VIEW | VIRGL_BIND_RENDER_TARGET;
 
       switch (table[i].format) {
       case PIPE_FORMAT_A8_UNORM:
@@ -493,7 +493,7 @@ void vrend_check_texture_storage(struct vrend_format_table *table)
          glBindTexture(GL_TEXTURE_2D, tex_id);
          glTexStorage2D(GL_TEXTURE_2D, 1, table[i].internalformat, 32, 32);
          if (glGetError() == GL_NO_ERROR)
-            table[i].bindings |= VIRGL_BIND_CAN_TEXTURE_STORAGE;
+            table[i].flags |= VIRGL_TEXTURE_CAN_TEXTURE_STORAGE;
          glDeleteTextures(1, &tex_id);
       }
    }

src/vrend_renderer.c

@@ -1636,7 +1636,7 @@ int vrend_create_surface(struct vrend_context *ctx,
 
    if (has_feature(feat_texture_view) &&
        res->storage != VREND_RESOURCE_STORAGE_BUFFER &&
-       (tex_conv_table[res->base.format].bindings & VIRGL_BIND_CAN_TEXTURE_STORAGE)) {
+       (tex_conv_table[res->base.format].flags & VIRGL_TEXTURE_CAN_TEXTURE_STORAGE)) {
       /* We don't need texture views for buffer objects.
        * Otherwise we only need a texture view if the
        * a) formats differ between the surface and base texture
@@ -1926,7 +1926,7 @@ int vrend_create_sampler_view(struct vrend_context *ctx,
           swizzle[3] = PIPE_SWIZZLE_ONE;
    }
 
-   if (tex_conv_table[view->format].flags & VIRGL_BIND_NEED_SWIZZLE) {
+   if (tex_conv_table[view->format].flags & VIRGL_TEXTURE_NEED_SWIZZLE) {
       if (swizzle[0] <= PIPE_SWIZZLE_ALPHA)
          swizzle[0] = tex_conv_table[view->format].swizzle[swizzle[0]];
       if (swizzle[1] <= PIPE_SWIZZLE_ALPHA)
@@ -1970,7 +1970,7 @@ int vrend_create_sampler_view(struct vrend_context *ctx,
          format = view->texture->base.format;
       else if (view->format != view->texture->base.format)
          needs_view = true;
-      if (needs_view && (tex_conv_table[view->texture->base.format].bindings & VIRGL_BIND_CAN_TEXTURE_STORAGE)) {
+      if (needs_view && (tex_conv_table[view->texture->base.format].flags & VIRGL_TEXTURE_CAN_TEXTURE_STORAGE)) {
         glGenTextures(1, &view->id);
         GLenum internalformat = tex_conv_table[format].internalformat;
         unsigned base_layer = view->val0 & 0xffff;
@@ -5981,7 +5981,7 @@ static int vrend_renderer_resource_allocate_texture(struct vrend_resource *gr,
    assert(pr->width0 > 0);
 
    bool format_can_texture_storage = has_feature(feat_texture_storage) &&
-                              (tex_conv_table[pr->format].bindings & VIRGL_BIND_CAN_TEXTURE_STORAGE);
+                              (tex_conv_table[pr->format].flags & VIRGL_TEXTURE_CAN_TEXTURE_STORAGE);
 
    gr->target = tgsitargettogltarget(pr->target, pr->nr_samples);
    gr->storage = VREND_RESOURCE_STORAGE_TEXTURE;
@@ -7651,7 +7651,7 @@ static GLuint vrend_make_view(struct vrend_resource *res, enum pipe_format forma
    GLenum fmt = tex_conv_table[format].internalformat;
 
    /* If the format doesn't support TextureStorage it is not immutable, so no TextureView*/
-   if (!(tex_conv_table[format].bindings & VIRGL_BIND_CAN_TEXTURE_STORAGE))
+   if (!(tex_conv_table[format].flags & VIRGL_TEXTURE_CAN_TEXTURE_STORAGE))
       return res->id;
 
    VREND_DEBUG(dbg_blit, NULL, "Create texture view from %s for %s\n",

src/vrend_renderer.h

@@ -77,9 +77,8 @@ struct vrend_resource {
    uint64_t mipmap_offsets[VR_MAX_TEXTURE_2D_LEVELS];
 };
 
-#define VIRGL_BIND_NEED_SWIZZLE (1 << 28)
+#define VIRGL_TEXTURE_NEED_SWIZZLE        (1 << 0)
-#define VIRGL_BIND_CAN_TEXTURE_STORAGE (1 << 29)
+#define VIRGL_TEXTURE_CAN_TEXTURE_STORAGE (1 << 1)
-
 
 struct vrend_format_table {
    enum virgl_formats format;
@@ -88,7 +87,7 @@ struct vrend_format_table {
    GLenum gltype;
    uint8_t swizzle[4];
    uint32_t bindings;
-   int flags;
+   uint32_t flags;
 };
 
 struct vrend_transfer_info {