The open source OpenXR runtime
d/sample: Clean up, specify a blend mode
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src/xrt/drivers/sample/sample_hmd.c
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src/xrt/drivers/sample/sample_hmd.c
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(enum u_device_alloc_flags)(U_DEVICE_ALLOC_HMD | U_DEVICE_ALLOC_TRACKING_NONE);
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struct sample_hmd *sh = U_DEVICE_ALLOCATE(struct sample_hmd, flags, 1, 0);
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// This list should be ordered, most preferred first.
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size_t idx = 0;
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sh->base.hmd->blend_modes[idx++] = XRT_BLEND_MODE_OPAQUE;
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sh->base.hmd->blend_mode_count = idx;
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sh->base.update_inputs = sample_hmd_update_inputs;
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sh->base.get_tracked_pose = sample_hmd_get_tracked_pose;
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sh->base.get_view_poses = sample_hmd_get_view_poses;
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sh->base.destroy = sample_hmd_destroy;
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sh->base.name = XRT_DEVICE_GENERIC_HMD;
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sh->base.device_type = XRT_DEVICE_TYPE_HMD;
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sh->pose.orientation.w = 1.0f; // All other values set to zero by U_DEVICE_ALLOCATE (which calls U_CALLOC)
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sh->pose = (struct xrt_pose)XRT_POSE_IDENTITY;
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sh->log_level = debug_get_log_option_sample_log();
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// Print name.
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snprintf(sh->base.serial, XRT_DEVICE_NAME_LEN, "Sample HMD S/N");
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// Setup input.
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sh->base.name = XRT_DEVICE_GENERIC_HMD;
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sh->base.device_type = XRT_DEVICE_TYPE_HMD;
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sh->base.inputs[0].name = XRT_INPUT_GENERIC_HEAD_POSE;
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sh->base.orientation_tracking_supported = true;
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sh->base.position_tracking_supported = false;
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// Set up display details
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// refresh rate
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sh->base.hmd->views[0].viewport.x_pixels = 0;
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sh->base.hmd->views[1].viewport.x_pixels = panel_w;
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// Distortion information, fills in xdev->compute_distortion().
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u_distortion_mesh_set_none(&sh->base);
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// Setup variable tracker: Optional but useful for debugging
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u_var_add_root(sh, "Sample HMD", true);
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u_var_add_pose(sh, &sh->pose, "pose");
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u_var_add_log_level(sh, &sh->log_level, "log_level");
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// Distortion information, fills in xdev->compute_distortion().
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u_distortion_mesh_set_none(&sh->base);
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return &sh->base;
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}