From d160eed005e75d8933562f4880dfc84033011ac5 Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <jakob@vmware.com>
Date: Mon, 1 Mar 2010 15:11:39 +0000
Subject: r300g: Conversion to to winsys handle

---
 src/gallium/drivers/r300/r300_texture.c | 66 +++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

(limited to 'src/gallium/drivers/r300/r300_texture.c')

diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c
index 2246c75056..3b39207a45 100644
--- a/src/gallium/drivers/r300/r300_texture.c
+++ b/src/gallium/drivers/r300/r300_texture.c
@@ -848,6 +848,70 @@ static struct pipe_texture*
     return (struct pipe_texture*)tex;
 }
 
+static struct pipe_texture*
+    r300_texture_from_handle(struct pipe_screen* screen,
+                             const struct pipe_texture* base,
+                             struct winsys_handle *whandle)
+{
+    struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
+    struct r300_screen* rscreen = r300_screen(screen);
+    struct pipe_buffer *buffer;
+    struct r300_texture* tex;
+    unsigned stride;
+
+    /* Support only 2D textures without mipmaps */
+    if (base->target != PIPE_TEXTURE_2D ||
+        base->depth0 != 1 ||
+        base->last_level != 0) {
+        return NULL;
+    }
+
+    buffer = winsys->buffer_from_handle(winsys, screen, whandle, &stride);
+    if (!buffer) {
+        return NULL;
+    }
+
+    tex = CALLOC_STRUCT(r300_texture);
+    if (!tex) {
+        return NULL;
+    }
+
+    tex->tex = *base;
+    pipe_reference_init(&tex->tex.reference, 1);
+    tex->tex.screen = screen;
+
+    tex->stride_override = stride;
+    tex->pitch[0] = stride / util_format_get_blocksize(base->format);
+
+    r300_setup_flags(tex);
+    r300_setup_texture_state(rscreen, tex);
+
+    /* one ref already taken */
+    tex->buffer = buffer;
+
+    return (struct pipe_texture*)tex;
+}
+
+static boolean
+    r300_texture_get_handle(struct pipe_screen* screen,
+                            struct pipe_texture *texture,
+                            struct winsys_handle *whandle)
+{
+    struct radeon_winsys* winsys = (struct radeon_winsys*)screen->winsys;
+    struct r300_texture* tex = (struct r300_texture*)texture;
+    unsigned stride;
+
+    if (!tex) {
+        return FALSE;
+    }
+
+    stride = r300_texture_get_stride(r300_screen(screen), tex, 0);
+
+    winsys->buffer_get_handle(winsys, tex->buffer, stride, whandle);
+
+    return TRUE;
+}
+
 static struct pipe_video_surface *
 r300_video_surface_create(struct pipe_screen *screen,
                           enum pipe_video_chroma_format chroma_format,
@@ -899,6 +963,8 @@ static void r300_video_surface_destroy(struct pipe_video_surface *vsfc)
 void r300_init_screen_texture_functions(struct pipe_screen* screen)
 {
     screen->texture_create = r300_texture_create;
+    screen->texture_from_handle = r300_texture_from_handle;
+    screen->texture_get_handle = r300_texture_get_handle;
     screen->texture_destroy = r300_texture_destroy;
     screen->get_tex_surface = r300_get_tex_surface;
     screen->tex_surface_destroy = r300_tex_surface_destroy;
-- 
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