LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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hwc: Avoid MDP composition with alpha scaling

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MDP4 supports scaling with alpha, only in RGB pipes.
In some cases this scaling happened with video pipes.
We now fall back to GLES composition for layers that have
alpha and need scaling.

Change-Id: I084355bad1cdb17c7308077b56006c59e75d2042
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Bug: 7648647
This commit is contained in:
Naseer Ahmed
2012-12-03 14:46:15 -05:00
parent a256748947
commit 018e54569f
3 changed files with 32 additions and 2 deletions
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28
libhwcomposer/hwc_utils.cpp
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@@ -110,6 +110,25 @@ void dumpLayer(hwc_layer_1_t const* l)
l->displayFrame.bottom);
}
static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
int dst_w, dst_h, src_w, src_h;
hwc_rect_t displayFrame = layer->displayFrame;
hwc_rect_t sourceCrop = layer->sourceCrop;
dst_w = displayFrame.right - displayFrame.left;
dst_h = displayFrame.bottom - displayFrame.top;
src_w = sourceCrop.right - sourceCrop.left;
src_h = sourceCrop.bottom - sourceCrop.top;
if(((src_w != dst_w) || (src_h != dst_h))) {
if(layer->blending != HWC_BLENDING_NONE)
return true;
}
return false;
}
void setListStats(hwc_context_t *ctx,
const hwc_display_contents_1_t *list, int dpy) {
@@ -118,10 +137,11 @@ void setListStats(hwc_context_t *ctx,
ctx->listStats[dpy].yuvCount = 0;
ctx->listStats[dpy].yuvIndex = -1;
ctx->listStats[dpy].skipCount = 0;
ctx->listStats[dpy].needsAlphaScale = false;
for (size_t i = 0; i < list->numHwLayers; i++) {
private_handle_t *hnd =
(private_handle_t *)list->hwLayers[i].handle;
hwc_layer_1_t const* layer = &list->hwLayers[i];
private_handle_t *hnd = (private_handle_t *)layer->handle;
if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
continue;
@@ -130,6 +150,9 @@ void setListStats(hwc_context_t *ctx,
ctx->listStats[dpy].skipCount++;
}
if(!ctx->listStats[dpy].needsAlphaScale)
ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
if (UNLIKELY(isYuvBuffer(hnd))) {
ctx->listStats[dpy].yuvCount++;
ctx->listStats[dpy].yuvIndex = i;
@@ -137,6 +160,7 @@ void setListStats(hwc_context_t *ctx,
}
}
static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
float& rightCutRatio, float& bottomCutRatio, int orient) {
if(orient & HAL_TRANSFORM_FLIP_H) {