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HWC 1.1: add FRAMEBUFFER_TARGET layer type

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Change-Id: I61965c343dceb4137bc439b49ea90ec13183b719
This commit is contained in:
Jesse Hall
2012-08-16 16:21:13 -07:00
parent 1098f9d7e9
commit d18c83fc04
2 changed files with 31 additions and 13 deletions
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40
include/hardware/hwcomposer.h
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@@ -113,20 +113,30 @@ typedef struct hwc_color {
typedef struct hwc_layer_1 {
/*
* initially set to HWC_FRAMEBUFFER or HWC_BACKGROUND.
* Initially set to HWC_FRAMEBUFFER, HWC_BACKGROUND, or
* HWC_FRAMEBUFFER_TARGET.
*
* HWC_FRAMEBUFFER
* indicates the layer will be drawn into the framebuffer
* using OpenGL ES.
* The HWC can toggle this value to HWC_OVERLAY, to indicate
* it will handle the layer.
* Indicates the layer will be drawn into the framebuffer
* using OpenGL ES. The HWC can toggle this value to HWC_OVERLAY to
* indicate it will handle the layer.
*
* HWC_BACKGROUND
* indicates this is a special "background" layer. The only valid
* field is backgroundColor. HWC_BACKGROUND can only be used with
* HWC_API_VERSION >= 0.2
* The HWC can toggle this value to HWC_FRAMEBUFFER, to indicate
* it CANNOT handle the background color
* Indicates this is a special "background" layer. The only valid field
* is backgroundColor. The HWC can toggle this value to HWC_FRAMEBUFFER
* to indicate it CANNOT handle the background color.
*
* HWC_FRAMEBUFFER_TARGET
* Indicates this layer is the framebuffer surface used as the target of
* OpenGL ES composition. If the HWC sets all other layers to HWC_OVERLAY
* or HWC_BACKGROUND, then no OpenGL ES composition will be done, and
* this layer should be ignored during set(); the HWC_SKIP_LAYER flag
* will indicate this case.
*
* This flag (and the framebuffer surface layer) will only be used if the
* HWC version is HWC_DEVICE_API_VERSION_1_1 or higher. In older versions,
* the OpenGL ES target surface is communicated by the (dpy, sur) fields
* in hwc_compositor_device_1_t.
*/
int32_t compositionType;
@@ -244,9 +254,13 @@ typedef struct hwc_display_contents_1 {
*/
int flipFenceFd;
/* (dpy, sur) is the target of SurfaceFlinger's OpenGL ES composition.
* They aren't relevant to prepare. The set call should commit this surface
* atomically to the display along with any overlay layers.
/* (dpy, sur) is the target of SurfaceFlinger's OpenGL ES composition for
* HWC versions before HWC_DEVICE_VERSION_1_1. They aren't relevant to
* prepare. The set call should commit this surface atomically to the
* display along with any overlay layers.
*
* For HWC_DEVICE_VERSION_1_1 and later, these will always be set to
* EGL_NO_DISPLAY and EGL_NO_SURFACE.
*/
hwc_display_t dpy;
hwc_surface_t sur;

4
include/hardware/hwcomposer_defs.h
View File

@@ -89,6 +89,10 @@ enum {
/* this is the background layer. it's used to set the background color.
* there is only a single background layer */
HWC_BACKGROUND = 2,
/* this layer holds the result of compositing the HWC_FRAMEBUFFER layers.
* Added in HWC_DEVICE_API_VERSION_1_1. */
HWC_FRAMEBUFFER_TARGET = 3,
};
/*