011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 466102927ee6a21eb58d0f5f98b85155e7ee8e5b Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Thu, 3 Nov 2016 18:53:10 -0700
|
|
Subject: [PATCH] drm/vc4: Add support for rendering with ETC1 textures.
|
|
|
|
The validation for it ends up being quite simple, but I hadn't got
|
|
around to it before merging the driver. For backwards compatibility,
|
|
we also need to add a flag so that the userspace GL driver can easily
|
|
tell if the kernel will allow ETC1 textures (on an old kernel, it will
|
|
continue to convert to RGBA8)
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
(cherry picked from commit 7154d76fedf549607afbc0d13db9aaf02da5cebf)
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_drv.c | 1 +
|
|
drivers/gpu/drm/vc4/vc4_validate.c | 7 +++++++
|
|
include/uapi/drm/vc4_drm.h | 1 +
|
|
3 files changed, 9 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_drv.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
|
|
@@ -103,6 +103,7 @@ static int vc4_get_param_ioctl(struct dr
|
|
pm_runtime_put(&vc4->v3d->pdev->dev);
|
|
break;
|
|
case DRM_VC4_PARAM_SUPPORTS_BRANCHES:
|
|
+ case DRM_VC4_PARAM_SUPPORTS_ETC1:
|
|
args->value = true;
|
|
break;
|
|
default:
|
|
--- a/drivers/gpu/drm/vc4/vc4_validate.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_validate.c
|
|
@@ -644,6 +644,13 @@ reloc_tex(struct vc4_exec_info *exec,
|
|
cpp = 1;
|
|
break;
|
|
case VC4_TEXTURE_TYPE_ETC1:
|
|
+ /* ETC1 is arranged as 64-bit blocks, where each block is 4x4
|
|
+ * pixels.
|
|
+ */
|
|
+ cpp = 8;
|
|
+ width = (width + 3) >> 2;
|
|
+ height = (height + 3) >> 2;
|
|
+ break;
|
|
case VC4_TEXTURE_TYPE_BW1:
|
|
case VC4_TEXTURE_TYPE_A4:
|
|
case VC4_TEXTURE_TYPE_A1:
|
|
--- a/include/uapi/drm/vc4_drm.h
|
|
+++ b/include/uapi/drm/vc4_drm.h
|
|
@@ -286,6 +286,7 @@ struct drm_vc4_get_hang_state {
|
|
#define DRM_VC4_PARAM_V3D_IDENT1 1
|
|
#define DRM_VC4_PARAM_V3D_IDENT2 2
|
|
#define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3
|
|
+#define DRM_VC4_PARAM_SUPPORTS_ETC1 4
|
|
|
|
struct drm_vc4_get_param {
|
|
__u32 param;
|