XR: Color Depth Adjustments

This addresses reduced visibility of scenes (as displayed in the VR
headset) that can result from the 8-bit color depth format currently
used for XR swapchain images.

By switching to a swapchain format with higher color depth (RGB10_A2,
RGBA16, RGBA16F) for supported runtimes, visibility in VR should be
noticeably improved.

However, current limitations are lack of support for these higher
color depth formats by some XR runtimes, especially for OpenGL.

Also important to note that GPU_offscreen_create() now explicitly
takes in the texture format (eGPUTextureFormat) instead of a
"high_bitdepth" boolean.

Reviewed By: Julian Eisel, Clément Foucault

Differential Revision: http://developer.blender.org/D9842

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/gpu/GPU_framebuffer.h b/source/blender/gpu/GPU_framebuffer.h
index 6482d9a9d3e..bf0ab3dc533 100644
--- a/source/blender/gpu/GPU_framebuffer.h
+++ b/source/blender/gpu/GPU_framebuffer.h
@@ -223,7 +223,7 @@ uint GPU_framebuffer_stack_level_get(void);
  */
 
 GPUOffScreen *GPU_offscreen_create(
-    int width, int height, bool depth, bool high_bitdepth, char err_out[256]);
+    int width, int height, bool depth, eGPUTextureFormat format, char err_out[256]);
 void GPU_offscreen_free(GPUOffScreen *ofs);
 void GPU_offscreen_bind(GPUOffScreen *ofs, bool save);
 void GPU_offscreen_unbind(GPUOffScreen *ofs, bool restore);