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Diffstat (limited to 'src/gallium/state_trackers/glx/dri/dri_drawable.c')
-rw-r--r--src/gallium/state_trackers/glx/dri/dri_drawable.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/glx/dri/dri_drawable.c b/src/gallium/state_trackers/glx/dri/dri_drawable.c
new file mode 100644
index 0000000000..b712acda88
--- /dev/null
+++ b/src/gallium/state_trackers/glx/dri/dri_drawable.c
@@ -0,0 +1,363 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * 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.
+ *
+ **************************************************************************/
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_swapbuffers.h"
+
+#include "pipe/p_context.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_cb_fbo.h"
+
+
+static void
+blit_swapbuffers(__DRIdrawablePrivate *dPriv,
+ __DRIcontextPrivate *cPriv,
+ struct pipe_surface *src,
+ const drm_clip_rect_t *rect)
+{
+ struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
+ struct dri_drawable *fb = dri_drawable(dPriv);
+ struct dri_context *context = dri_context(cPriv);
+
+ const int nbox = dPriv->numClipRects;
+ const drm_clip_rect_t *pbox = dPriv->pClipRects;
+
+ struct pipe_surface *dest = fb->front_surface;
+ const int backWidth = fb->stfb->Base.Width;
+ const int backHeight = fb->stfb->Base.Height;
+ int i;
+
+ for (i = 0; i < nbox; i++, pbox++) {
+ drm_clip_rect_t box;
+ drm_clip_rect_t sbox;
+
+ if (pbox->x1 > pbox->x2 ||
+ pbox->y1 > pbox->y2 ||
+ (pbox->x2 - pbox->x1) > dest->width ||
+ (pbox->y2 - pbox->y1) > dest->height)
+ continue;
+
+ box = *pbox;
+
+ if (rect) {
+ drm_clip_rect_t rrect;
+
+ rrect.x1 = dPriv->x + rect->x1;
+ rrect.y1 = (dPriv->h - rect->y1 - rect->y2) + dPriv->y;
+ rrect.x2 = rect->x2 + rrect.x1;
+ rrect.y2 = rect->y2 + rrect.y1;
+ if (rrect.x1 > box.x1)
+ box.x1 = rrect.x1;
+ if (rrect.y1 > box.y1)
+ box.y1 = rrect.y1;
+ if (rrect.x2 < box.x2)
+ box.x2 = rrect.x2;
+ if (rrect.y2 < box.y2)
+ box.y2 = rrect.y2;
+
+ if (box.x1 > box.x2 || box.y1 > box.y2)
+ continue;
+ }
+
+ /* restrict blit to size of actually rendered area */
+ if (box.x2 - box.x1 > backWidth)
+ box.x2 = backWidth + box.x1;
+ if (box.y2 - box.y1 > backHeight)
+ box.y2 = backHeight + box.y1;
+
+ debug_printf("%s: box %d,%d-%d,%d\n", __FUNCTION__,
+ box.x1, box.y1, box.x2, box.y2);
+
+ sbox.x1 = box.x1 - dPriv->x;
+ sbox.y1 = box.y1 - dPriv->y;
+
+ ctx->st->pipe->surface_copy( ctx->st->pipe,
+ FALSE,
+ dest,
+ box.x1, box.y1,
+ src,
+ sbox.x1, sbox.y1,
+ box.x2 - box.x1,
+ box.y2 - box.y1 );
+ }
+}
+
+/**
+ * Display a colorbuffer surface in an X window.
+ * Used for SwapBuffers and flushing front buffer rendering.
+ *
+ * \param dPriv the window/drawable to display into
+ * \param surf the surface to display
+ * \param rect optional subrect of surface to display (may be NULL).
+ */
+static void
+dri_display_surface(__DRIdrawablePrivate *dPriv,
+ struct pipe_surface *source,
+ const drm_clip_rect_t *rect)
+{
+ struct dri_drawable *drawable = dri_drawable(dPriv);
+ struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
+ struct dri_context *context = screen->dummy_context;
+ struct pipe_winsys *winsys = screen->winsys;
+
+ if (!context)
+ return;
+
+ if (drawable->last_swap_fence) {
+ winsys->fence_finish( winsys,
+ drawable->last_swap_fence,
+ 0 );
+
+ winsys->fence_reference( winsys,
+ &drawable->last_swap_fence,
+ NULL );
+ }
+
+ drawable->last_swap_fence = drawable->first_swap_fence;
+ drawable->first_swap_fence = NULL;
+
+ /* Call lock_hardware to update dPriv cliprects.
+ */
+ dri_lock_hardware(context, drawable);
+ {
+ if (dPriv->numClipRects) {
+ blit_swapbuffers( context, dPriv, source, rect );
+ }
+ }
+ dri_unlock_hardware(context);
+
+ if (drawble->stamp != drawable->dPriv->lastStamp) {
+ dri_update_window_size( dpriv );
+ }
+}
+
+
+
+/**
+ * This will be called a drawable is known to have moved/resized.
+ */
+void
+dri_update_window_size(__DRIdrawablePrivate *dPriv)
+{
+ struct dri_drawable *drawable = dri_drawable(dPriv);
+ st_resize_framebuffer(drawable->stfb, dPriv->w, dPriv->h);
+ drawable->stamp = dPriv->lastStamp;
+}
+
+
+
+void
+dri_swap_buffers(__DRIdrawablePrivate * dPriv)
+{
+ struct dri_drawable *drawable = dri_drawable(dPriv);
+ struct pipe_surface *back_surf;
+
+ assert(drawable);
+ assert(drawable->stfb);
+
+ back_surf = st_get_framebuffer_surface(drawable->stfb,
+ ST_SURFACE_BACK_LEFT);
+ if (back_surf) {
+ st_notify_swapbuffers(drawable->stfb);
+ dri_display_surface(dPriv, back_surf, NULL);
+ st_notify_swapbuffers_complete(drawable->stfb);
+ }
+}
+
+
+/**
+ * Called via glXCopySubBufferMESA() to copy a subrect of the back
+ * buffer to the front buffer/screen.
+ */
+void
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
+{
+ struct dri_drawable *drawable = dri_drawable(dPriv);
+ struct pipe_surface *back_surf;
+
+ assert(drawable);
+ assert(drawable->stfb);
+
+ back_surf = st_get_framebuffer_surface(drawable->stfb,
+ ST_SURFACE_BACK_LEFT);
+ if (back_surf) {
+ drm_clip_rect_t rect;
+ rect.x1 = x;
+ rect.y1 = y;
+ rect.x2 = w;
+ rect.y2 = h;
+
+ st_notify_swapbuffers(drawable->stfb);
+ dri_display_surface(dPriv, back_surf, &rect);
+ }
+}
+
+
+
+/*
+ * The state tracker keeps track of whether the fake frontbuffer has
+ * been touched by any rendering since the last time we copied its
+ * contents to the real frontbuffer. Our task is easy:
+ */
+static void
+dri_flush_frontbuffer( struct pipe_winsys *winsys,
+ struct pipe_surface *surf,
+ void *context_private)
+{
+ struct dri_context *dri = (struct dri_context *) context_private;
+ __DRIdrawablePrivate *dPriv = dri->driDrawable;
+
+ dri_display_surface(dPriv, surf, NULL);
+}
+
+
+
+/* Need to create a surface which wraps the front surface to support
+ * client-side swapbuffers.
+ */
+static void
+dri_create_front_surface(struct dri_screen *screen,
+ struct pipe_winsys *winsys,
+ unsigned handle)
+{
+ struct pipe_screen *pipe_screen = screen->pipe_screen;
+ struct pipe_texture *texture;
+ struct pipe_texture templat;
+ struct pipe_surface *surface;
+ struct pipe_buffer *buffer;
+ unsigned pitch;
+
+ assert(screen->front.cpp == 4);
+
+// buffer = dri_buffer_from_handle(screen->winsys,
+// "front", handle);
+
+ if (!buffer)
+ return;
+
+ screen->front.buffer = dri_bo(buffer);
+
+ memset(&templat, 0, sizeof(templat));
+ templat.tex_usage |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;
+ templat.target = PIPE_TEXTURE_2D;
+ templat.last_level = 0;
+ templat.depth[0] = 1;
+ templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
+ templat.width[0] = screen->front.width;
+ templat.height[0] = screen->front.height;
+ pf_get_block(templat.format, &templat.block);
+ pitch = screen->front.pitch;
+
+ texture = pipe_screen->texture_blanket(pipe_screen,
+ &templat,
+ &pitch,
+ buffer);
+
+ /* Unref the buffer we don't need it anyways */
+ pipe_buffer_reference(screen, &buffer, NULL);
+
+ surface = pipe_screen->get_tex_surface(pipe_screen,
+ texture,
+ 0,
+ 0,
+ 0,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ screen->front.texture = texture;
+ screen->front.surface = surface;
+}
+
+/**
+ * This is called when we need to set up GL rendering to a new X window.
+ */
+static boolean
+dri_create_buffer(__DRIscreenPrivate *sPriv,
+ __DRIdrawablePrivate *dPriv,
+ const __GLcontextModes *visual,
+ boolean isPixmap)
+{
+ enum pipe_format colorFormat, depthFormat, stencilFormat;
+ struct dri_drawable *drawable;
+
+ if (isPixmap)
+ goto fail; /* not implemented */
+
+ drawable = CALLOC_STRUCT(dri_drawable);
+ if (drawable == NULL)
+ goto fail;
+
+ /* XXX: todo: use the pipe_screen queries to figure out which
+ * render targets are supportable.
+ */
+ if (visual->redBits == 5)
+ colorFormat = PIPE_FORMAT_R5G6B5_UNORM;
+ else
+ colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
+
+ if (visual->depthBits == 16)
+ depthFormat = PIPE_FORMAT_Z16_UNORM;
+ else if (visual->depthBits == 24) {
+ if (visual->stencilBits == 8)
+ depthFormat = PIPE_FORMAT_S8Z24_UNORM;
+ else
+ depthFormat = PIPE_FORMAT_X8Z24_UNORM;
+ }
+
+ drawable->stfb = st_create_framebuffer(visual,
+ colorFormat,
+ depthFormat,
+ dPriv->w,
+ dPriv->h,
+ (void*) drawable);
+ if (drawable->stfb == NULL)
+ goto fail;
+
+ dPriv->driverPrivate = (void *) drawable;
+ return GL_TRUE;
+
+fail:
+ FREE(drawable);
+ return GL_FALSE;
+}
+
+static void
+dri_destroy_buffer(__DRIdrawablePrivate *dPriv)
+{
+ struct dri_drawable *drawable = dri_drawable(dPriv);
+
+ /* No particular need to wait on fences before dereferencing them:
+ */
+ winsys->fence_reference( winsys, &ctx->last_swap_fence, NULL );
+ winsys->fence_reference( winsys, &ctx->first_swap_fence, NULL );
+
+ st_unreference_framebuffer(drawable->stfb);
+
+ FREE(drawable);
+}
+
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