[Mesa-dev] [PATCH 5/5] st/dri: implement the GL interop DRI extension
Marek Olšák
maraeo at gmail.com
Thu Mar 3 19:46:18 UTC 2016
From: Marek Olšák <marek.olsak at amd.com>
---
src/gallium/state_trackers/dri/dri2.c | 255 ++++++++++++++++++++++++++++++++++
1 file changed, 255 insertions(+)
diff --git a/src/gallium/state_trackers/dri/dri2.c b/src/gallium/state_trackers/dri/dri2.c
index 7f7fbc4..b0e42a8 100644
--- a/src/gallium/state_trackers/dri/dri2.c
+++ b/src/gallium/state_trackers/dri/dri2.c
@@ -30,14 +30,19 @@
#include <xf86drm.h>
#include <dlfcn.h>
+#include "GL/mesa_glinterop.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_debug.h"
#include "state_tracker/drm_driver.h"
+#include "state_tracker/st_cb_bufferobjects.h"
+#include "state_tracker/st_cb_fbo.h"
+#include "state_tracker/st_cb_texture.h"
#include "state_tracker/st_texture.h"
#include "state_tracker/st_context.h"
#include "pipe-loader/pipe_loader.h"
+#include "main/bufferobj.h"
#include "main/texobj.h"
#include "dri_screen.h"
@@ -1417,6 +1422,254 @@ static const __DRIrobustnessExtension dri2Robustness = {
.base = { __DRI2_ROBUSTNESS, 1 }
};
+#define offset_after(type, ptr, member) \
+ offsetof(type, member) + sizeof(ptr->member)
+
+static int
+dri2_interop_query_device_info(__DRIcontext *_ctx,
+ mesa_glinterop_device_info *out)
+{
+ struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
+
+ if (out->size < offset_after(mesa_glinterop_device_info, out, device_id))
+ return MESA_GLINTEROP_INVALID_VALUE;
+
+ out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
+ out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
+ out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
+ out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
+
+ out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
+ out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
+
+ return MESA_GLINTEROP_SUCCESS;
+}
+
+static int
+dri2_interop_export_object(__DRIcontext *_ctx,
+ mesa_glinterop_export_in *in,
+ mesa_glinterop_export_out *out)
+{
+ struct st_context_iface *st = dri_context(_ctx)->st;
+ struct pipe_screen *screen = st->pipe->screen;
+ struct gl_context *ctx = ((struct st_context *)st)->ctx;
+ struct pipe_resource *res = NULL;
+ struct winsys_handle whandle;
+ unsigned target, usage;
+ boolean success;
+
+ /* Check structure sizes first. */
+ if (in->size < offset_after(mesa_glinterop_export_in, in,
+ out_driver_data))
+ return MESA_GLINTEROP_INVALID_VALUE;
+
+ if (out->size < offset_after(mesa_glinterop_export_out, out,
+ view_numlayers))
+ return MESA_GLINTEROP_INVALID_VALUE;
+
+ /* Validate the target. */
+ switch (in->target) {
+ case GL_TEXTURE_BUFFER:
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_RECTANGLE:
+ case GL_TEXTURE_1D_ARRAY:
+ case GL_TEXTURE_2D_ARRAY:
+ case GL_TEXTURE_CUBE_MAP_ARRAY:
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_2D_MULTISAMPLE:
+ case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+ case GL_TEXTURE_EXTERNAL_OES:
+ case GL_RENDERBUFFER:
+ case GL_ARRAY_BUFFER:
+ target = in->target;
+ break;
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+ target = GL_TEXTURE_CUBE_MAP;
+ break;
+ default:
+ return MESA_GLINTEROP_INVALID_TARGET;
+ }
+
+ /* Validate the simple case of miplevel. */
+ if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
+ in->miplevel != 0)
+ return MESA_GLINTEROP_INVALID_MIP_LEVEL;
+
+ /* Validate the OpenGL object and get pipe_resource. */
+ mtx_lock(&ctx->Shared->Mutex);
+
+ if (target == GL_ARRAY_BUFFER) {
+ /* Buffer objects.
+ *
+ * The error checking is based on the documentation of
+ * clCreateFromGLBuffer from OpenCL 2.0 SDK.
+ */
+ struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
+ * "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
+ * a GL buffer object but does not have an existing data store or
+ * the size of the buffer is 0."
+ */
+ if (!buf || buf->Size == 0) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OBJECT;
+ }
+
+ res = st_buffer_object(buf)->buffer;
+ if (!res) {
+ /* this shouldn't happen */
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OBJECT;
+ }
+
+ buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
+ } else if (target == GL_RENDERBUFFER) {
+ /* Renderbuffers.
+ *
+ * The error checking is based on the documentation of
+ * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
+ */
+ struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
+ * "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
+ * object or if the width or height of renderbuffer is zero."
+ */
+ if (!rb || rb->Width == 0 || rb->Height == 0) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OBJECT;
+ }
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
+ * "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
+ * renderbuffer object."
+ */
+ if (rb->NumSamples > 1) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OPERATION;
+ }
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
+ * "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
+ * required by the OpenCL implementation on the device."
+ */
+ res = st_renderbuffer(rb)->texture;
+ if (!res) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_OUT_OF_RESOURCES;
+ }
+
+ out->internalformat = rb->InternalFormat;
+ out->view_minlevel = 0;
+ out->view_numlevels = 1;
+ out->view_minlayer = 0;
+ out->view_numlayers = 1;
+ } else {
+ /* Texture objects.
+ *
+ * The error checking is based on the documentation of
+ * clCreateFromGLTexture from OpenCL 2.0 SDK.
+ */
+ struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
+
+ if (obj)
+ _mesa_test_texobj_completeness(ctx, obj);
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
+ * "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
+ * type matches texture_target, if the specified miplevel of texture
+ * is not defined, or if the width or height of the specified
+ * miplevel is zero or if the GL texture object is incomplete."
+ */
+ if (!obj ||
+ obj->Target != target ||
+ !obj->_BaseComplete ||
+ (in->miplevel > 0 && !obj->_MipmapComplete)) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OBJECT;
+ }
+
+ /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
+ * "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
+ * levelbase (for OpenGL implementations) or zero (for OpenGL ES
+ * implementations); or greater than the value of q (for both OpenGL
+ * and OpenGL ES). levelbase and q are defined for the texture in
+ * section 3.8.10 (Texture Completeness) of the OpenGL 2.1
+ * specification and section 3.7.10 of the OpenGL ES 2.0."
+ */
+ if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_MIP_LEVEL;
+ }
+
+ if (!st_finalize_texture(ctx, st->pipe, obj)) {
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_OUT_OF_RESOURCES;
+ }
+
+ res = st_get_texobj_resource(obj);
+ if (!res) {
+ /* Incomplete texture buffer object? This shouldn't really occur. */
+ mtx_unlock(&ctx->Shared->Mutex);
+ return MESA_GLINTEROP_INVALID_OBJECT;
+ }
+
+ if (target == GL_TEXTURE_BUFFER) {
+ out->internalformat = obj->BufferObjectFormat;
+ out->buf_offset = obj->BufferOffset;
+ out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
+ obj->BufferSize;
+ } else {
+ out->internalformat = obj->Image[0][0]->InternalFormat;
+ out->view_minlevel = obj->MinLevel;
+ out->view_numlevels = obj->NumLevels;
+ out->view_minlayer = obj->MinLayer;
+ out->view_numlayers = obj->NumLayers;
+ }
+ }
+
+ /* Get the handle. */
+ switch (in->access) {
+ case MESA_GLINTEROP_ACCESS_READ_WRITE:
+ usage = PIPE_HANDLE_USAGE_READ_WRITE;
+ break;
+ case MESA_GLINTEROP_ACCESS_READ_ONLY:
+ usage = PIPE_HANDLE_USAGE_READ;
+ break;
+ case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
+ usage = PIPE_HANDLE_USAGE_WRITE;
+ break;
+ default:
+ usage = 0;
+ }
+
+ memset(&whandle, 0, sizeof(whandle));
+ whandle.type = DRM_API_HANDLE_TYPE_FD;
+
+ success = screen->resource_get_handle(screen, res, &whandle, usage);
+ mtx_unlock(&ctx->Shared->Mutex);
+
+ if (!success)
+ return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
+
+ out->dmabuf_fd = whandle.handle;
+ return MESA_GLINTEROP_SUCCESS;
+}
+
+static const __DRI2interopExtension dri2InteropExtension = {
+ .base = { __DRI2_INTEROP, 1 },
+ .query_device_info = dri2_interop_query_device_info,
+ .export_object = dri2_interop_export_object
+};
+
/*
* Backend function init_screen.
*/
@@ -1429,6 +1682,7 @@ static const __DRIextension *dri_screen_extensions[] = {
&dri2ConfigQueryExtension.base,
&dri2ThrottleExtension.base,
&dri2FenceExtension.base,
+ &dri2InteropExtension.base,
NULL
};
@@ -1440,6 +1694,7 @@ static const __DRIextension *dri_robust_screen_extensions[] = {
&dri2ConfigQueryExtension.base,
&dri2ThrottleExtension.base,
&dri2FenceExtension.base,
+ &dri2InteropExtension.base,
&dri2Robustness.base,
NULL
};
--
2.5.0
More information about the mesa-dev
mailing list