Replace virgl_renderer_resource_get_info

virgl_renderer_resource_get_info is used to get texture information for
scanout. However, it is also crucial to configure the texture correctly
for scanout. Replace it with virgl_renderer_borrow_texture_for_scanout,
which "borrows" the texture and modifies its configuration.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>

src/virglrenderer.c

@@ -453,8 +453,8 @@ void virgl_renderer_ctx_detach_resource(int ctx_id, int res_handle)
    ctx->detach_resource(ctx, res);
 }
 
-int virgl_renderer_resource_get_info(int res_handle,
+int virgl_renderer_borrow_texture_for_scanout(int res_handle,
-                                     struct virgl_renderer_resource_info *info)
+                                              struct virgl_renderer_texture_info *info)
 {
    TRACE_FUNC();
    struct virgl_resource *res = virgl_resource_lookup(res_handle);
@@ -464,8 +464,8 @@ int virgl_renderer_resource_get_info(int res_handle,
    if (!info)
       return EINVAL;
 
-   vrend_renderer_resource_get_info(res->pipe_resource,
+   vrend_renderer_borrow_texture_for_scanout(res->pipe_resource,
-                                    (struct vrend_renderer_resource_info *)info);
+                                             (struct vrend_renderer_texture_info *)info);
    info->handle = res_handle;
 
    if (state.winsys_initialized) {

src/virglrenderer.h

@@ -275,9 +275,9 @@ VIRGL_EXPORT void virgl_renderer_ctx_detach_resource(int ctx_id, int res_handle)
 
 VIRGL_EXPORT virgl_debug_callback_type virgl_set_debug_callback(virgl_debug_callback_type cb);
 
-/* return information about a resource */
+/* borrow a texture for scanout */
 
-struct virgl_renderer_resource_info {
+struct virgl_renderer_texture_info {
    uint32_t handle;
    uint32_t virgl_format;
    uint32_t width;
@@ -289,8 +289,8 @@ struct virgl_renderer_resource_info {
    int drm_fourcc;
 };
 
-VIRGL_EXPORT int virgl_renderer_resource_get_info(int res_handle,
+VIRGL_EXPORT int virgl_renderer_borrow_texture_for_scanout(int res_handle,
-                                                  struct virgl_renderer_resource_info *info);
+                                                           struct virgl_renderer_texture_info *info);
 
 VIRGL_EXPORT void virgl_renderer_cleanup(void *cookie);
 

src/vrend_renderer.c

@@ -11236,21 +11236,45 @@ void vrend_context_set_debug_flags(struct vrend_context *ctx, const char *flagst
    }
 }
 
-void vrend_renderer_resource_get_info(struct pipe_resource *pres,
+void vrend_renderer_borrow_texture_for_scanout(struct pipe_resource *pres,
-                                      struct vrend_renderer_resource_info *info)
+                                               struct vrend_renderer_texture_info *info)
 {
-   struct vrend_resource *res = (struct vrend_resource *)pres;
+   struct vrend_texture *tex = (struct vrend_texture *)pres;
+   struct vrend_format_table *tex_conv = &tex_conv_table[tex->base.base.format];
    int elsize;
 
-   elsize = util_format_get_blocksize(res->base.format);
+   assert(tex->base.target == GL_TEXTURE_2D);
+   assert(!util_format_is_depth_or_stencil(tex->base.base.format));
+
+   elsize = util_format_get_blocksize(tex->base.base.format);
+
+   glBindTexture(GL_TEXTURE_2D, tex->base.id);
+
+   if (tex_conv->flags & VIRGL_TEXTURE_NEED_SWIZZLE) {
+      for (unsigned i = 0; i < ARRAY_SIZE(tex->cur_swizzle); ++i) {
+         GLint next_swizzle = to_gl_swizzle(tex_conv->swizzle[i]);
+         if (tex->cur_swizzle[i] != next_swizzle) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R + i, next_swizzle);
+            tex->cur_swizzle[i] = next_swizzle;
+         }
+      }
+   }
+
+   if (tex->cur_srgb_decode != GL_DECODE_EXT && util_format_is_srgb(tex->base.base.format)) {
+      if (has_feature(feat_texture_srgb_decode)) {
+         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SRGB_DECODE_EXT,
+                         GL_DECODE_EXT);
+         tex->cur_srgb_decode = GL_DECODE_EXT;
+      }
+   }
 
-   info->tex_id = res->id;
+   info->tex_id = tex->base.id;
-   info->width = res->base.width0;
+   info->width = tex->base.base.width0;
-   info->height = res->base.height0;
+   info->height = tex->base.base.height0;
-   info->depth = res->base.depth0;
+   info->depth = tex->base.base.depth0;
-   info->format = res->base.format;
+   info->format = tex->base.base.format;
-   info->flags = res->y_0_top ? VIRGL_RESOURCE_Y_0_TOP : 0;
+   info->flags = tex->base.y_0_top ? VIRGL_RESOURCE_Y_0_TOP : 0;
-   info->stride = util_format_get_nblocksx(res->base.format, u_minify(res->base.width0, 0)) * elsize;
+   info->stride = util_format_get_nblocksx(tex->base.base.format, u_minify(tex->base.base.width0, 0)) * elsize;
 }
 
 void vrend_renderer_get_cap_set(uint32_t cap_set, uint32_t *max_ver,

src/vrend_renderer.h

@@ -447,7 +447,7 @@ void vrend_renderer_detach_res_ctx(struct vrend_context *ctx,
 
 struct vrend_context_tweaks *vrend_get_context_tweaks(struct vrend_context *ctx);
 
-struct vrend_renderer_resource_info {
+struct vrend_renderer_texture_info {
    uint32_t handle;
    uint32_t format;
    uint32_t width;
@@ -471,8 +471,8 @@ struct vrend_blit_info {
    bool has_srgb_write_control;
 };
 
-void vrend_renderer_resource_get_info(struct pipe_resource *pres,
+void vrend_renderer_borrow_texture_for_scanout(struct pipe_resource *pres,
-                                      struct vrend_renderer_resource_info *info);
+                                               struct vrend_renderer_texture_info *info);
 
 void vrend_renderer_get_cap_set(uint32_t cap_set, uint32_t *max_ver,
                                 uint32_t *max_size);