dri: store internal_format when known

For images created from textures or renderbuffer, the internal
format is known so store it.

This will be used in the next commit to replaces guessing it.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16662>

src/gallium/frontends/dri/dri2.c

@@ -1442,6 +1442,7 @@ dri2_dup_image(__DRIimage *image, void *loaderPrivate)
    img->level = image->level;
    img->layer = image->layer;
    img->dri_format = image->dri_format;
+   img->internal_format = image->internal_format;
    /* This should be 0 for sub images, but dup is also used for base images. */
    img->dri_components = image->dri_components;
    img->use = image->use;

src/gallium/frontends/dri/dri_helpers.c

@@ -312,6 +312,7 @@ dri2_create_image_from_renderbuffer2(__DRIcontext *context,
    }
 
    img->dri_format = driGLFormatToImageFormat(rb->Format);
+   img->internal_format = rb->InternalFormat;
    img->loader_private = loaderPrivate;
    img->sPriv = context->driScreenPriv;
    img->in_fence_fd = -1;
@@ -416,6 +417,7 @@ dri2_create_from_texture(__DRIcontext *context, int target, unsigned texture,
    img->layer = depth;
    img->in_fence_fd = -1;
    img->dri_format = driGLFormatToImageFormat(obj->Image[face][level]->TexFormat);
+   img->internal_format = obj->Image[face][level]->InternalFormat;
 
    img->loader_private = loaderPrivate;
    img->sPriv = context->driScreenPriv;

src/gallium/frontends/dri/dri_screen.c

@@ -745,6 +745,8 @@ dri_get_egl_image(struct st_manager *smapi,
        */
       mesa_format mesa_format = driImageFormatToGLFormat(map->dri_format);
       stimg->internalformat = driGLFormatToSizedInternalGLFormat(mesa_format);
+   } else {
+      stimg->internalformat = img->internal_format;
    }
 
    stimg->yuv_color_space = img->yuv_color_space;

src/gallium/frontends/dri/dri_screen.h

@@ -117,6 +117,10 @@ struct __DRIimageRec {
    uint32_t dri_format;
    uint32_t dri_fourcc;
    uint32_t dri_components;
+   /* Provided by eglCreateImageKHR if creating from a
+    * texture or a renderbuffer. 0 otherwise.
+    */
+   uint32_t internal_format;
    unsigned use;
    unsigned plane;