st/xorg: Add Xorg state tracker

1 files changed, 212 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/xorg/xorg_dri2.c b/src/gallium/state_trackers/xorg/xorg_dri2.c
new file mode 100644
index 0000000..72b333e
--- /dev/null
+++ b/src/gallium/state_trackers/xorg/xorg_dri2.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ * Author: Alan Hourihane <alanh@tungstengraphics.com>
+ * Author: Jakob Bornecrantz <wallbraker@gmail.com>
+ *
+ */
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include "xorg_tracker.h"
+
+#include "dri2.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_inlines.h"
+
+typedef struct {
+    PixmapPtr pPixmap;
+    struct pipe_texture *tex;
+    struct pipe_buffer *buf;
+} *BufferPrivatePtr;
+
+static DRI2BufferPtr
+driCreateBuffers(DrawablePtr pDraw, unsigned int *attachments, int count)
+{
+    struct pipe_texture *depth, *tex;
+    struct pipe_buffer *buf;
+    ScreenPtr pScreen = pDraw->pScreen;
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    modesettingPtr ms = modesettingPTR(pScrn);
+    BufferPrivatePtr privates;
+    DRI2BufferPtr buffers;
+    PixmapPtr pPixmap;
+    unsigned stride, handle;
+    int i;
+
+    buffers = xcalloc(count, sizeof *buffers);
+    if (!buffers)
+	goto fail_buffers;
+
+    privates = xcalloc(count, sizeof *privates);
+    if (!privates)
+	goto fail_privates;
+
+    depth = NULL;
+    for (i = 0; i < count; i++) {
+	pPixmap = NULL;
+	tex = NULL;
+	buf = NULL;
+	if (attachments[i] == DRI2BufferFrontLeft) {
+	    if (pDraw->type == DRAWABLE_PIXMAP)
+		pPixmap = (PixmapPtr) pDraw;
+	    else
+		pPixmap = (*pScreen->GetWindowPixmap)((WindowPtr) pDraw);
+	    pPixmap->refcnt++;
+	    tex = xorg_exa_get_texture(pPixmap);
+	} else if (attachments[i] == DRI2BufferStencil) {
+	    pipe_texture_reference(&tex, depth);
+	} else if (attachments[i] == DRI2BufferDepth) {
+	    struct pipe_texture template;
+
+	    memset(&template, 0, sizeof(template));
+	    template.target = PIPE_TEXTURE_2D;
+	    template.compressed = 0;
+	    template.format = PIPE_FORMAT_S8Z24_UNORM;
+	    pf_get_block(template.format, &template.block);
+	    template.width[0] = pDraw->width;
+	    template.height[0] = pDraw->height;
+	    template.depth[0] = 1;
+	    template.last_level = 0;
+	    template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+	    tex = ms->screen->texture_create(ms->screen, &template);
+	} else {
+	    struct pipe_texture template;
+	    memset(&template, 0, sizeof(template));
+	    template.target = PIPE_TEXTURE_2D;
+	    template.compressed = 0;
+	    template.format = PIPE_FORMAT_A8R8G8B8_UNORM;
+	    pf_get_block(template.format, &template.block);
+	    template.width[0] = pDraw->width;
+	    template.height[0] = pDraw->height;
+	    template.depth[0] = 1;
+	    template.last_level = 0;
+	    template.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+	    tex = ms->screen->texture_create(ms->screen, &template);
+	}
+
+	drm_api_hocks.buffer_from_texture(tex, &buf, &stride);
+	drm_api_hocks.global_handle_from_buffer(ms->screen, buf, &handle);
+
+	buffers[i].name = handle;
+	buffers[i].attachment = attachments[i];
+	buffers[i].pitch = stride;
+	buffers[i].cpp = 4;
+	buffers[i].driverPrivate = &privates[i];
+	buffers[i].flags = 0; /* not tiled */
+	privates[i].pPixmap = pPixmap;
+	privates[i].buf = buf;
+	privates[i].tex = tex;
+    }
+
+    return buffers;
+
+fail_privates:
+    xfree(buffers);
+fail_buffers:
+    return NULL;
+}
+
+static void
+driDestroyBuffers(DrawablePtr pDraw, DRI2BufferPtr buffers, int count)
+{
+    ScreenPtr pScreen = pDraw->pScreen;
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    modesettingPtr ms = modesettingPTR(pScrn);
+    BufferPrivatePtr private;
+    int i;
+
+    for (i = 0; i < count; i++) {
+	private = buffers[i].driverPrivate;
+
+	if (private->pPixmap)
+	    (*pScreen->DestroyPixmap)(private->pPixmap);
+
+	pipe_texture_reference(&private->tex, NULL);
+	pipe_buffer_reference(ms->screen, &private->buf, NULL);
+    }
+
+    if (buffers) {
+	xfree(buffers[0].driverPrivate);
+	xfree(buffers);
+    }
+}
+
+static void
+driCopyRegion(DrawablePtr pDraw, RegionPtr pRegion,
+              DRI2BufferPtr pDestBuffer, DRI2BufferPtr pSrcBuffer)
+{
+    ScreenPtr pScreen = pDraw->pScreen;
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    modesettingPtr ms = modesettingPTR(pScrn);
+    BufferPrivatePtr dst_priv = pDestBuffer->driverPrivate;
+    BufferPrivatePtr src_priv = pSrcBuffer->driverPrivate;
+
+    struct pipe_surface *dst_surf =
+	ms->screen->get_tex_surface(ms->screen, dst_priv->tex, 0, 0, 0,
+				    PIPE_BUFFER_USAGE_GPU_WRITE);
+    struct pipe_surface *src_surf =
+	ms->screen->get_tex_surface(ms->screen, src_priv->tex, 0, 0, 0,
+				    PIPE_BUFFER_USAGE_GPU_READ);
+
+    ms->ctx->surface_copy(ms->ctx, 0, dst_surf, 0, 0, src_surf,
+			  0, 0, pDraw->width, pDraw->height);
+
+    pipe_surface_reference(&dst_surf, NULL);
+    pipe_surface_reference(&src_surf, NULL);
+}
+
+Bool
+driScreenInit(ScreenPtr pScreen)
+{
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    modesettingPtr ms = modesettingPTR(pScrn);
+    DRI2InfoRec dri2info;
+
+    dri2info.version = 1;
+    dri2info.fd = ms->fd;
+#if 0
+    dri2info.driverName = pScrn->name;
+#else
+    dri2info.driverName = "i915"; /* FIXME */
+#endif
+    dri2info.deviceName = "/dev/dri/card0"; /* FIXME */
+
+    dri2info.CreateBuffers = driCreateBuffers;
+    dri2info.DestroyBuffers = driDestroyBuffers;
+    dri2info.CopyRegion = driCopyRegion;
+
+    return DRI2ScreenInit(pScreen, &dri2info);
+}
+
+void
+driCloseScreen(ScreenPtr pScreen)
+{
+    DRI2CloseScreen(pScreen);
+}
+
+/* vim: set sw=4 ts=8 sts=4: */