Mesa (master): dri: add __DRIimageLoaderExtension and __DRIimageDriverExtension
Eric Anholt
anholt at kemper.freedesktop.org
Fri Nov 8 03:14:09 UTC 2013
Module: Mesa
Branch: master
Commit: 442442026eb241f05f2b7c03da304e0be047a7da
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=442442026eb241f05f2b7c03da304e0be047a7da
Author: Keith Packard <keithp at keithp.com>
Date: Mon Nov 4 18:09:51 2013 -0800
dri: add __DRIimageLoaderExtension and __DRIimageDriverExtension
These provide an interface between the driver and the loader to allocate
color buffers through the DRIimage extension interface rather than through a
loader-specific extension (as is used by DRI2, for instance).
The driver uses the loader 'getBuffers' interface to allocate color buffers.
The loader uses the createNewScreen2, createNewDrawable, createNewContext,
getAPIMask and createContextAttribs APIS (mostly shared with DRI2).
This interface will work with the DRI3 loader, and should also work with GBM
and other loaders so that drivers need not be customized for each new loader
interface, as long as they provide this image interface.
v2: Fix build of i915 and i965 together (by anholt)
Signed-off-by: Keith Packard <keithp at keithp.com>
Reviewed-by: Kristian Høgsberg <krh at bitplanet.net>
Reviewed-by: Eric Anholt <eric at anholt.net>
---
include/GL/internal/dri_interface.h | 76 ++++++++++++++++
src/mesa/drivers/dri/common/dri_util.c | 13 +++
src/mesa/drivers/dri/common/dri_util.h | 6 ++
src/mesa/drivers/dri/i915/intel_context.c | 113 +++++++++++++++++++++++-
src/mesa/drivers/dri/i915/intel_mipmap_tree.c | 33 +++++++
src/mesa/drivers/dri/i915/intel_mipmap_tree.h | 8 ++
src/mesa/drivers/dri/i915/intel_screen.c | 1 +
src/mesa/drivers/dri/i915/intel_screen.h | 1 +
src/mesa/drivers/dri/i965/brw_context.c | 114 +++++++++++++++++++++++-
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 61 +++++++++++++
src/mesa/drivers/dri/i965/intel_mipmap_tree.h | 8 ++
src/mesa/drivers/dri/i965/intel_screen.c | 5 +-
12 files changed, 428 insertions(+), 11 deletions(-)
diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h
index fdd7f94..ed43257 100644
--- a/include/GL/internal/dri_interface.h
+++ b/include/GL/internal/dri_interface.h
@@ -86,6 +86,10 @@ typedef struct __DRIdri2LoaderExtensionRec __DRIdri2LoaderExtension;
typedef struct __DRI2flushExtensionRec __DRI2flushExtension;
typedef struct __DRI2throttleExtensionRec __DRI2throttleExtension;
+
+typedef struct __DRIimageLoaderExtensionRec __DRIimageLoaderExtension;
+typedef struct __DRIimageDriverExtensionRec __DRIimageDriverExtension;
+
/*@}*/
@@ -1334,4 +1338,76 @@ struct __DRI2rendererQueryExtensionRec {
int (*queryString)(__DRIscreen *screen, int attribute, const char **val);
};
+/**
+ * Image Loader extension. Drivers use this to allocate color buffers
+ */
+
+enum __DRIimageBufferMask {
+ __DRI_IMAGE_BUFFER_BACK = (1 << 0),
+ __DRI_IMAGE_BUFFER_FRONT = (1 << 1)
+};
+
+struct __DRIimageList {
+ uint32_t image_mask;
+ __DRIimage *back;
+ __DRIimage *front;
+};
+
+#define __DRI_IMAGE_LOADER "DRI_IMAGE_LOADER"
+#define __DRI_IMAGE_LOADER_VERSION 1
+
+struct __DRIimageLoaderExtensionRec {
+ __DRIextension base;
+
+ /**
+ * Allocate color buffers.
+ *
+ * \param driDrawable
+ * \param width Width of allocated buffers
+ * \param height Height of allocated buffers
+ * \param format one of __DRI_IMAGE_FORMAT_*
+ * \param stamp Address of variable to be updated when
+ * getBuffers must be called again
+ * \param loaderPrivate The loaderPrivate for driDrawable
+ * \param buffer_mask Set of buffers to allocate
+ * \param buffers Returned buffers
+ */
+ int (*getBuffers)(__DRIdrawable *driDrawable,
+ unsigned int format,
+ uint32_t *stamp,
+ void *loaderPrivate,
+ uint32_t buffer_mask,
+ struct __DRIimageList *buffers);
+
+ /**
+ * Flush pending front-buffer rendering
+ *
+ * Any rendering that has been performed to the
+ * fake front will be flushed to the front
+ *
+ * \param driDrawable Drawable whose front-buffer is to be flushed
+ * \param loaderPrivate Loader's private data that was previously passed
+ * into __DRIdri2ExtensionRec::createNewDrawable
+ */
+ void (*flushFrontBuffer)(__DRIdrawable *driDrawable, void *loaderPrivate);
+};
+
+/**
+ * DRI extension.
+ */
+
+#define __DRI_IMAGE_DRIVER "DRI_IMAGE_DRIVER"
+#define __DRI_IMAGE_DRIVER_VERSION 1
+
+struct __DRIimageDriverExtensionRec {
+ __DRIextension base;
+
+ /* Common DRI functions, shared with DRI2 */
+ __DRIcreateNewScreen2Func createNewScreen2;
+ __DRIcreateNewDrawableFunc createNewDrawable;
+ __DRIcreateNewContextFunc createNewContext;
+ __DRIcreateContextAttribsFunc createContextAttribs;
+ __DRIgetAPIMaskFunc getAPIMask;
+};
+
#endif
diff --git a/src/mesa/drivers/dri/common/dri_util.c b/src/mesa/drivers/dri/common/dri_util.c
index 46a2da4..86cf24c 100644
--- a/src/mesa/drivers/dri/common/dri_util.c
+++ b/src/mesa/drivers/dri/common/dri_util.c
@@ -78,6 +78,8 @@ setupLoaderExtensions(__DRIscreen *psp,
psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_SWRAST_LOADER) == 0)
psp->swrast_loader = (__DRIswrastLoaderExtension *) extensions[i];
+ if (strcmp(extensions[i]->name, __DRI_IMAGE_LOADER) == 0)
+ psp->image.loader = (__DRIimageLoaderExtension *) extensions[i];
}
}
@@ -859,3 +861,14 @@ driImageFormatToGLFormat(uint32_t image_format)
return MESA_FORMAT_NONE;
}
}
+
+/** Image driver interface */
+const __DRIimageDriverExtension driImageDriverExtension = {
+ .base = { __DRI_IMAGE_DRIVER, __DRI_IMAGE_DRIVER_VERSION },
+
+ .createNewScreen2 = driCreateNewScreen2,
+ .createNewDrawable = driCreateNewDrawable,
+ .createNewContext = driCreateNewContext,
+ .getAPIMask = driGetAPIMask,
+ .createContextAttribs = driCreateContextAttribs,
+};
diff --git a/src/mesa/drivers/dri/common/dri_util.h b/src/mesa/drivers/dri/common/dri_util.h
index 7fab3e5..79a8564 100644
--- a/src/mesa/drivers/dri/common/dri_util.h
+++ b/src/mesa/drivers/dri/common/dri_util.h
@@ -176,6 +176,10 @@ struct __DRIscreenRec {
__DRIuseInvalidateExtension *useInvalidate;
} dri2;
+ struct {
+ __DRIimageLoaderExtension *loader;
+ } image;
+
driOptionCache optionInfo;
driOptionCache optionCache;
@@ -285,4 +289,6 @@ dri2InvalidateDrawable(__DRIdrawable *drawable);
extern void
driUpdateFramebufferSize(struct gl_context *ctx, const __DRIdrawable *dPriv);
+extern const __DRIimageDriverExtension driImageDriverExtension;
+
#endif /* _DRI_UTIL_H_ */
diff --git a/src/mesa/drivers/dri/i915/intel_context.c b/src/mesa/drivers/dri/i915/intel_context.c
index 1568a16..3618893 100644
--- a/src/mesa/drivers/dri/i915/intel_context.c
+++ b/src/mesa/drivers/dri/i915/intel_context.c
@@ -99,6 +99,8 @@ intelGetString(struct gl_context * ctx, GLenum name)
}
}
+#define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
+
static void
intel_flush_front(struct gl_context *ctx)
{
@@ -108,11 +110,10 @@ intel_flush_front(struct gl_context *ctx)
__DRIscreen *const screen = intel->intelScreen->driScrnPriv;
if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
- if (screen->dri2.loader->flushFrontBuffer != NULL &&
+ if (flushFront(screen) &&
driDrawable &&
driDrawable->loaderPrivate) {
- screen->dri2.loader->flushFrontBuffer(driDrawable,
- driDrawable->loaderPrivate);
+ flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
/* We set the dirty bit in intel_prepare_render() if we're
* front buffer rendering once we get there.
@@ -122,6 +123,9 @@ intel_flush_front(struct gl_context *ctx)
}
}
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable);
+
static unsigned
intel_bits_per_pixel(const struct intel_renderbuffer *rb)
{
@@ -202,7 +206,10 @@ intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
if (unlikely(INTEL_DEBUG & DEBUG_DRI))
fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
- intel_update_dri2_buffers(intel, drawable);
+ if (screen->image.loader)
+ intel_update_image_buffers(intel, drawable);
+ else
+ intel_update_dri2_buffers(intel, drawable);
driUpdateFramebufferSize(&intel->ctx, drawable);
}
@@ -811,3 +818,101 @@ intel_process_dri2_buffer(struct intel_context *intel,
region);
intel_region_release(®ion);
}
+
+/**
+ * \brief Query DRI Image loader to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * dri3
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable Drawable whose buffers are queried.
+ * \param buffers [out] List of buffers returned by DRI2 query.
+ * \param buffer_count [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ */
+
+static void
+intel_update_image_buffer(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ struct intel_renderbuffer *rb,
+ __DRIimage *buffer,
+ enum __DRIimageBufferMask buffer_type)
+{
+ struct intel_region *region = buffer->region;
+
+ if (!rb || !region)
+ return;
+
+ unsigned num_samples = rb->Base.Base.NumSamples;
+
+ if (rb->mt &&
+ rb->mt->region &&
+ rb->mt->region == region)
+ return;
+
+ intel_miptree_release(&rb->mt);
+ rb->mt = intel_miptree_create_for_image_buffer(intel,
+ buffer_type,
+ intel_rb_format(rb),
+ num_samples,
+ region);
+}
+
+
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable)
+{
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+ struct intel_renderbuffer *front_rb;
+ struct intel_renderbuffer *back_rb;
+ struct __DRIimageList images;
+ unsigned int format;
+ uint32_t buffer_mask = 0;
+
+ front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+ if (back_rb)
+ format = intel_rb_format(back_rb);
+ else if (front_rb)
+ format = intel_rb_format(front_rb);
+ else
+ return;
+
+ if ((intel->is_front_buffer_rendering || intel->is_front_buffer_reading || !back_rb) && front_rb)
+ buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
+
+ if (back_rb)
+ buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
+
+ (*screen->image.loader->getBuffers) (drawable,
+ driGLFormatToImageFormat(format),
+ &drawable->dri2.stamp,
+ drawable->loaderPrivate,
+ buffer_mask,
+ &images);
+
+ if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
+ drawable->w = images.front->width;
+ drawable->h = images.front->height;
+ intel_update_image_buffer(intel,
+ drawable,
+ front_rb,
+ images.front,
+ __DRI_IMAGE_BUFFER_FRONT);
+ }
+ if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
+ drawable->w = images.back->width;
+ drawable->h = images.back->height;
+ intel_update_image_buffer(intel,
+ drawable,
+ back_rb,
+ images.back,
+ __DRI_IMAGE_BUFFER_BACK);
+ }
+}
diff --git a/src/mesa/drivers/dri/i915/intel_mipmap_tree.c b/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
index 8432b6d..66a7a92 100644
--- a/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
@@ -322,6 +322,39 @@ intel_miptree_create_for_dri2_buffer(struct intel_context *intel,
return mt;
}
+/**
+ * For a singlesample image buffer, this simply wraps the given region with a miptree.
+ *
+ * For a multisample image buffer, this wraps the given region with
+ * a singlesample miptree, then creates a multisample miptree into which the
+ * singlesample miptree is embedded as a child.
+ */
+struct intel_mipmap_tree*
+intel_miptree_create_for_image_buffer(struct intel_context *intel,
+ enum __DRIimageBufferMask buffer_type,
+ gl_format format,
+ uint32_t num_samples,
+ struct intel_region *region)
+{
+ struct intel_mipmap_tree *mt = NULL;
+
+ /* Only the front and back buffers, which are color buffers, are allocated
+ * through the image loader.
+ */
+ assert(_mesa_get_format_base_format(format) == GL_RGB ||
+ _mesa_get_format_base_format(format) == GL_RGBA);
+
+ mt = intel_miptree_create_for_bo(intel,
+ region->bo,
+ format,
+ 0,
+ region->width,
+ region->height,
+ region->pitch,
+ region->tiling);
+ return mt;
+}
+
struct intel_mipmap_tree*
intel_miptree_create_for_renderbuffer(struct intel_context *intel,
gl_format format,
diff --git a/src/mesa/drivers/dri/i915/intel_mipmap_tree.h b/src/mesa/drivers/dri/i915/intel_mipmap_tree.h
index 1142af6..35cad6d 100644
--- a/src/mesa/drivers/dri/i915/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i915/intel_mipmap_tree.h
@@ -32,6 +32,7 @@
#include "intel_screen.h"
#include "intel_regions.h"
+#include "GL/internal/dri_interface.h"
#ifdef __cplusplus
extern "C" {
@@ -258,6 +259,13 @@ intel_miptree_create_for_dri2_buffer(struct intel_context *intel,
gl_format format,
struct intel_region *region);
+struct intel_mipmap_tree*
+intel_miptree_create_for_image_buffer(struct intel_context *intel,
+ enum __DRIimageBufferMask buffer_type,
+ gl_format format,
+ uint32_t num_samples,
+ struct intel_region *region);
+
/**
* Create a miptree appropriate as the storage for a non-texture renderbuffer.
* The miptree has the following properties:
diff --git a/src/mesa/drivers/dri/i915/intel_screen.c b/src/mesa/drivers/dri/i915/intel_screen.c
index d93bd9b..2c309ed 100644
--- a/src/mesa/drivers/dri/i915/intel_screen.c
+++ b/src/mesa/drivers/dri/i915/intel_screen.c
@@ -1258,6 +1258,7 @@ static const struct __DRIDriverVtableExtensionRec i915_vtable = {
/* This is the table of extensions that the loader will dlsym() for. */
static const __DRIextension *i915_driver_extensions[] = {
&driCoreExtension.base,
+ &driImageDriverExtension.base,
&driDRI2Extension.base,
&i915_vtable.base,
&i915_config_options.base,
diff --git a/src/mesa/drivers/dri/i915/intel_screen.h b/src/mesa/drivers/dri/i915/intel_screen.h
index 4ae259c..faa4c20 100644
--- a/src/mesa/drivers/dri/i915/intel_screen.h
+++ b/src/mesa/drivers/dri/i915/intel_screen.h
@@ -155,6 +155,7 @@ struct intel_screen
#define intel_fbo_init old_intel_fbo_init
#define intel_get_rb_region old_intel_get_rb_region
#define intel_renderbuffer_set_draw_offset old_intel_renderbuffer_set_draw_offset
+#define intel_miptree_create_for_image_buffer old_intel_miptree_create_for_image_buffer
extern void intelDestroyContext(__DRIcontext * driContextPriv);
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index f9623bb..a33e993 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -162,6 +162,8 @@ intelInvalidateState(struct gl_context * ctx, GLuint new_state)
brw->NewGLState |= new_state;
}
+#define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
+
static void
intel_flush_front(struct gl_context *ctx)
{
@@ -171,8 +173,7 @@ intel_flush_front(struct gl_context *ctx)
__DRIscreen *const screen = brw->intelScreen->driScrnPriv;
if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
- if (screen->dri2.loader->flushFrontBuffer != NULL &&
- driDrawable &&
+ if (flushFront(screen) && driDrawable &&
driDrawable->loaderPrivate) {
/* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT.
@@ -185,8 +186,7 @@ intel_flush_front(struct gl_context *ctx)
intel_resolve_for_dri2_flush(brw, driDrawable);
intel_batchbuffer_flush(brw);
- screen->dri2.loader->flushFrontBuffer(driDrawable,
- driDrawable->loaderPrivate);
+ flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
/* We set the dirty bit in intel_prepare_render() if we're
* front buffer rendering once we get there.
@@ -1029,6 +1029,9 @@ intel_process_dri2_buffer(struct brw_context *brw,
const char *buffer_name);
static void
+intel_update_image_buffers(struct brw_context *brw, __DRIdrawable *drawable);
+
+static void
intel_update_dri2_buffers(struct brw_context *brw, __DRIdrawable *drawable)
{
struct gl_framebuffer *fb = drawable->driverPrivate;
@@ -1088,6 +1091,7 @@ void
intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
{
struct brw_context *brw = context->driverPrivate;
+ __DRIscreen *screen = brw->intelScreen->driScrnPriv;
/* Set this up front, so that in case our buffers get invalidated
* while we're getting new buffers, we don't clobber the stamp and
@@ -1097,7 +1101,10 @@ intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
if (unlikely(INTEL_DEBUG & DEBUG_DRI))
fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
- intel_update_dri2_buffers(brw, drawable);
+ if (screen->image.loader)
+ intel_update_image_buffers(brw, drawable);
+ else
+ intel_update_dri2_buffers(brw, drawable);
driUpdateFramebufferSize(&brw->ctx, drawable);
}
@@ -1303,3 +1310,100 @@ intel_process_dri2_buffer(struct brw_context *brw,
region);
intel_region_release(®ion);
}
+
+/**
+ * \brief Query DRI image loader to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers from
+ * the image loader
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable Drawable whose buffers are queried.
+ * \param buffers [out] List of buffers returned by DRI2 query.
+ * \param buffer_count [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ */
+
+static void
+intel_update_image_buffer(struct brw_context *intel,
+ __DRIdrawable *drawable,
+ struct intel_renderbuffer *rb,
+ __DRIimage *buffer,
+ enum __DRIimageBufferMask buffer_type)
+{
+ struct intel_region *region = buffer->region;
+
+ if (!rb || !region)
+ return;
+
+ unsigned num_samples = rb->Base.Base.NumSamples;
+
+ if (rb->mt &&
+ rb->mt->region &&
+ rb->mt->region == region)
+ return;
+
+ intel_miptree_release(&rb->mt);
+ rb->mt = intel_miptree_create_for_image_buffer(intel,
+ buffer_type,
+ intel_rb_format(rb),
+ num_samples,
+ region);
+}
+
+static void
+intel_update_image_buffers(struct brw_context *brw, __DRIdrawable *drawable)
+{
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ __DRIscreen *screen = brw->intelScreen->driScrnPriv;
+ struct intel_renderbuffer *front_rb;
+ struct intel_renderbuffer *back_rb;
+ struct __DRIimageList images;
+ unsigned int format;
+ uint32_t buffer_mask = 0;
+
+ front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+ if (back_rb)
+ format = intel_rb_format(back_rb);
+ else if (front_rb)
+ format = intel_rb_format(front_rb);
+ else
+ return;
+
+ if ((brw->is_front_buffer_rendering || brw->is_front_buffer_reading || !back_rb) && front_rb)
+ buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
+
+ if (back_rb)
+ buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
+
+ (*screen->image.loader->getBuffers) (drawable,
+ driGLFormatToImageFormat(format),
+ &drawable->dri2.stamp,
+ drawable->loaderPrivate,
+ buffer_mask,
+ &images);
+
+ if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
+ drawable->w = images.front->width;
+ drawable->h = images.front->height;
+ intel_update_image_buffer(brw,
+ drawable,
+ front_rb,
+ images.front,
+ __DRI_IMAGE_BUFFER_FRONT);
+ }
+ if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
+ drawable->w = images.back->width;
+ drawable->h = images.back->height;
+ intel_update_image_buffer(brw,
+ drawable,
+ back_rb,
+ images.back,
+ __DRI_IMAGE_BUFFER_BACK);
+ }
+}
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index f690ac1..3f56086 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -726,6 +726,67 @@ intel_miptree_create_for_dri2_buffer(struct brw_context *brw,
return multisample_mt;
}
+/**
+ * For a singlesample image buffer, this simply wraps the given region with a miptree.
+ *
+ * For a multisample image buffer, this wraps the given region with
+ * a singlesample miptree, then creates a multisample miptree into which the
+ * singlesample miptree is embedded as a child.
+ */
+struct intel_mipmap_tree*
+intel_miptree_create_for_image_buffer(struct brw_context *intel,
+ enum __DRIimageBufferMask buffer_type,
+ gl_format format,
+ uint32_t num_samples,
+ struct intel_region *region)
+{
+ struct intel_mipmap_tree *singlesample_mt = NULL;
+ struct intel_mipmap_tree *multisample_mt = NULL;
+
+ /* Only the front and back buffers, which are color buffers, are allocated
+ * through the image loader.
+ */
+ assert(_mesa_get_format_base_format(format) == GL_RGB ||
+ _mesa_get_format_base_format(format) == GL_RGBA);
+
+ singlesample_mt = intel_miptree_create_for_bo(intel,
+ region->bo,
+ format,
+ 0,
+ region->width,
+ region->height,
+ region->pitch,
+ region->tiling);
+ if (!singlesample_mt)
+ return NULL;
+
+ intel_region_reference(&singlesample_mt->region, region);
+
+ if (num_samples == 0)
+ return singlesample_mt;
+
+ multisample_mt = intel_miptree_create_for_renderbuffer(intel,
+ format,
+ region->width,
+ region->height,
+ num_samples);
+ if (!multisample_mt) {
+ intel_miptree_release(&singlesample_mt);
+ return NULL;
+ }
+
+ multisample_mt->singlesample_mt = singlesample_mt;
+ multisample_mt->need_downsample = false;
+
+ intel_region_reference(&multisample_mt->region, region);
+
+ if (intel->is_front_buffer_rendering && buffer_type == __DRI_IMAGE_BUFFER_FRONT) {
+ intel_miptree_upsample(intel, multisample_mt);
+ }
+
+ return multisample_mt;
+}
+
struct intel_mipmap_tree*
intel_miptree_create_for_renderbuffer(struct brw_context *brw,
gl_format format,
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
index d718125..8777a8c 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -32,6 +32,7 @@
#include "intel_regions.h"
#include "intel_resolve_map.h"
+#include <GL/internal/dri_interface.h>
#ifdef __cplusplus
extern "C" {
@@ -529,6 +530,13 @@ intel_miptree_create_for_dri2_buffer(struct brw_context *brw,
uint32_t num_samples,
struct intel_region *region);
+struct intel_mipmap_tree*
+intel_miptree_create_for_image_buffer(struct brw_context *intel,
+ enum __DRIimageBufferMask buffer_type,
+ gl_format format,
+ uint32_t num_samples,
+ struct intel_region *region);
+
/**
* Create a miptree appropriate as the storage for a non-texture renderbuffer.
* The miptree has the following properties:
diff --git a/src/mesa/drivers/dri/i965/intel_screen.c b/src/mesa/drivers/dri/i965/intel_screen.c
index 099cabf..e39d654 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -1264,7 +1264,8 @@ __DRIconfig **intelInitScreen2(__DRIscreen *psp)
{
struct intel_screen *intelScreen;
- if (psp->dri2.loader->base.version <= 2 ||
+ if (psp->image.loader) {
+ } else if (psp->dri2.loader->base.version <= 2 ||
psp->dri2.loader->getBuffersWithFormat == NULL) {
fprintf(stderr,
"\nERROR! DRI2 loader with getBuffersWithFormat() "
@@ -1352,7 +1353,6 @@ intelReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
free(intelBuffer);
}
-
static const struct __DriverAPIRec brw_driver_api = {
.InitScreen = intelInitScreen2,
.DestroyScreen = intelDestroyScreen,
@@ -1373,6 +1373,7 @@ static const struct __DRIDriverVtableExtensionRec brw_vtable = {
static const __DRIextension *brw_driver_extensions[] = {
&driCoreExtension.base,
+ &driImageDriverExtension.base,
&driDRI2Extension.base,
&brw_vtable.base,
&brw_config_options.base,
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