[Mesa-dev] [PATCH V2 01/11] gallium: Add __DRIimageDriverExtension support to gallium
Axel Davy
axel.davy at ens.fr
Wed May 28 20:21:55 PDT 2014
From: Keith Packard <keithp at keithp.com>
Provide the hook to pull textures out of __DRIimage structures and use them as
renderbuffers.
Signed-off-by: Keith Packard <keithp at keithp.com>
---
v2: Added the image->flushFrontBuffer fix.
src/gallium/state_trackers/dri/drm/dri2.c | 238 +++++++++++++++++++++++++++++-
1 file changed, 230 insertions(+), 8 deletions(-)
diff --git a/src/gallium/state_trackers/dri/drm/dri2.c b/src/gallium/state_trackers/dri/drm/dri2.c
index 7dccc5e..2d93686 100644
--- a/src/gallium/state_trackers/dri/drm/dri2.c
+++ b/src/gallium/state_trackers/dri/drm/dri2.c
@@ -498,6 +498,219 @@ dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
FREE(buffer);
}
+static void
+dri_image_allocate_textures(struct dri_context *ctx,
+ struct dri_drawable *drawable,
+ const enum st_attachment_type *statts,
+ unsigned statts_count)
+{
+ __DRIdrawable *dPriv = drawable->dPriv;
+ __DRIscreen *sPriv = drawable->sPriv;
+ struct dri_screen *screen = dri_screen(sPriv);
+ unsigned int image_format = __DRI_IMAGE_FORMAT_NONE;
+ uint32_t buffer_mask = 0;
+ struct __DRIimageList images;
+ boolean alloc_depthstencil = FALSE;
+ int i, j;
+ struct pipe_resource templ;
+
+ /* See if we need a depth-stencil buffer. */
+ for (i = 0; i < statts_count; i++) {
+ if (statts[i] == ST_ATTACHMENT_DEPTH_STENCIL) {
+ alloc_depthstencil = TRUE;
+ break;
+ }
+ }
+
+ /* Delete the resources we won't need. */
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+ /* Don't delete the depth-stencil buffer, we can reuse it. */
+ if (i == ST_ATTACHMENT_DEPTH_STENCIL && alloc_depthstencil)
+ continue;
+
+ pipe_resource_reference(&drawable->textures[i], NULL);
+ }
+
+ if (drawable->stvis.samples > 1) {
+ for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
+ boolean del = TRUE;
+
+ /* Don't delete MSAA resources for the attachments which are enabled,
+ * we can reuse them. */
+ for (j = 0; j < statts_count; j++) {
+ if (i == statts[j]) {
+ del = FALSE;
+ break;
+ }
+ }
+
+ if (del) {
+ pipe_resource_reference(&drawable->msaa_textures[i], NULL);
+ }
+ }
+ }
+
+ for (i = 0; i < statts_count; i++) {
+ enum pipe_format pf;
+ unsigned bind;
+
+ dri_drawable_get_format(drawable, statts[i], &pf, &bind);
+ if (pf == PIPE_FORMAT_NONE)
+ continue;
+
+ switch (pf) {
+ case PIPE_FORMAT_B5G6R5_UNORM:
+ image_format = __DRI_IMAGE_FORMAT_RGB565;
+ break;
+ case PIPE_FORMAT_B8G8R8X8_UNORM:
+ image_format = __DRI_IMAGE_FORMAT_XRGB8888;
+ break;
+ case PIPE_FORMAT_B8G8R8A8_UNORM:
+ image_format = __DRI_IMAGE_FORMAT_ARGB8888;
+ break;
+ case PIPE_FORMAT_R8G8B8A8_UNORM:
+ image_format = __DRI_IMAGE_FORMAT_ABGR8888;
+ break;
+ default:
+ image_format = __DRI_IMAGE_FORMAT_NONE;
+ break;
+ }
+
+ switch (statts[i]) {
+ case ST_ATTACHMENT_FRONT_LEFT:
+ buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
+ break;
+ case ST_ATTACHMENT_BACK_LEFT:
+ buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
+ break;
+ default:
+ continue;
+ }
+ }
+
+ (*sPriv->image.loader->getBuffers) (dPriv,
+ image_format,
+ &dPriv->dri2.stamp,
+ dPriv->loaderPrivate,
+ buffer_mask,
+ &images);
+
+ if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
+ struct pipe_resource *texture = images.front->texture;
+
+ dPriv->w = texture->width0;
+ dPriv->h = texture->height0;
+
+ pipe_resource_reference(&drawable->textures[ST_ATTACHMENT_FRONT_LEFT], texture);
+ }
+
+ if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
+ struct pipe_resource *texture = images.back->texture;
+
+ dPriv->w = images.back->texture->width0;
+ dPriv->h = images.back->texture->height0;
+
+ pipe_resource_reference(&drawable->textures[ST_ATTACHMENT_BACK_LEFT], texture);
+ }
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = screen->target;
+ templ.last_level = 0;
+ templ.width0 = dPriv->w;
+ templ.height0 = dPriv->h;
+ templ.depth0 = 1;
+ templ.array_size = 1;
+
+ /* Allocate private MSAA colorbuffers. */
+ if (drawable->stvis.samples > 1) {
+ for (i = 0; i < statts_count; i++) {
+ enum st_attachment_type att = statts[i];
+
+ if (att == ST_ATTACHMENT_DEPTH_STENCIL)
+ continue;
+
+ if (drawable->textures[att]) {
+ templ.format = drawable->textures[att]->format;
+ templ.bind = drawable->textures[att]->bind;
+ templ.nr_samples = drawable->stvis.samples;
+
+ /* Try to reuse the resource.
+ * (the other resource parameters should be constant)
+ */
+ if (!drawable->msaa_textures[att] ||
+ drawable->msaa_textures[att]->width0 != templ.width0 ||
+ drawable->msaa_textures[att]->height0 != templ.height0) {
+ /* Allocate a new one. */
+ pipe_resource_reference(&drawable->msaa_textures[att], NULL);
+
+ drawable->msaa_textures[att] =
+ screen->base.screen->resource_create(screen->base.screen,
+ &templ);
+ assert(drawable->msaa_textures[att]);
+
+ /* If there are any MSAA resources, we should initialize them
+ * such that they contain the same data as the single-sample
+ * resources we just got from the X server.
+ *
+ * The reason for this is that the state tracker (and
+ * therefore the app) can access the MSAA resources only.
+ * The single-sample resources are not exposed
+ * to the state tracker.
+ *
+ */
+ dri_pipe_blit(ctx->st->pipe,
+ drawable->msaa_textures[att],
+ drawable->textures[att]);
+ }
+ }
+ else {
+ pipe_resource_reference(&drawable->msaa_textures[att], NULL);
+ }
+ }
+ }
+
+ /* Allocate a private depth-stencil buffer. */
+ if (alloc_depthstencil) {
+ enum st_attachment_type att = ST_ATTACHMENT_DEPTH_STENCIL;
+ struct pipe_resource **zsbuf;
+ enum pipe_format format;
+ unsigned bind;
+
+ dri_drawable_get_format(drawable, att, &format, &bind);
+
+ if (format) {
+ templ.format = format;
+ templ.bind = bind;
+
+ if (drawable->stvis.samples > 1) {
+ templ.nr_samples = drawable->stvis.samples;
+ zsbuf = &drawable->msaa_textures[att];
+ }
+ else {
+ templ.nr_samples = 0;
+ zsbuf = &drawable->textures[att];
+ }
+
+ /* Try to reuse the resource.
+ * (the other resource parameters should be constant)
+ */
+ if (!*zsbuf ||
+ (*zsbuf)->width0 != templ.width0 ||
+ (*zsbuf)->height0 != templ.height0) {
+ /* Allocate a new one. */
+ pipe_resource_reference(zsbuf, NULL);
+ *zsbuf = screen->base.screen->resource_create(screen->base.screen,
+ &templ);
+ assert(*zsbuf);
+ }
+ }
+ else {
+ pipe_resource_reference(&drawable->msaa_textures[att], NULL);
+ pipe_resource_reference(&drawable->textures[att], NULL);
+ }
+ }
+}
+
/*
* Backend functions for st_framebuffer interface.
*/
@@ -508,13 +721,18 @@ dri2_allocate_textures(struct dri_context *ctx,
const enum st_attachment_type *statts,
unsigned statts_count)
{
- __DRIbuffer *buffers;
- unsigned num_buffers = statts_count;
-
- buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
- if (buffers)
- dri2_drawable_process_buffers(ctx, drawable, buffers, num_buffers,
- statts, statts_count);
+ __DRIscreen *sPriv = drawable->sPriv;
+
+ if (sPriv->image.loader) {
+ dri_image_allocate_textures(ctx, drawable, statts, statts_count);
+ } else {
+ __DRIbuffer *buffers;
+ unsigned num_buffers = statts_count;
+ buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
+ if (buffers)
+ dri2_drawable_process_buffers(ctx, drawable, buffers, num_buffers,
+ statts, statts_count);
+ }
}
static void
@@ -523,6 +741,7 @@ dri2_flush_frontbuffer(struct dri_context *ctx,
enum st_attachment_type statt)
{
__DRIdrawable *dri_drawable = drawable->dPriv;
+ const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
struct pipe_context *pipe = ctx->st->pipe;
@@ -542,7 +761,9 @@ dri2_flush_frontbuffer(struct dri_context *ctx,
pipe->flush(pipe, NULL, 0);
- if (loader->flushFrontBuffer) {
+ if (image) {
+ image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
+ } else if (loader->flushFrontBuffer) {
loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
}
}
@@ -1171,6 +1392,7 @@ const struct __DriverAPIRec driDriverAPI = {
/* This is the table of extensions that the loader will dlsym() for. */
PUBLIC const __DRIextension *__driDriverExtensions[] = {
&driCoreExtension.base,
+ &driImageDriverExtension.base,
&driDRI2Extension.base,
&gallium_config_options.base,
NULL
--
1.9.1
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