void LayerBase::dump(String8& result, char* buffer, size_t SIZE) const
{
const Layer::State& s(drawingState());
snprintf(buffer, SIZE,
"+ %s %p\n"
" "
"z=%9d, pos=(%4d,%4d), size=(%4d,%4d), "
"needsBlending=%1d, needsDithering=%1d, invalidate=%1d, "
"alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
getTypeId(), this, s.z, tx(), ty(), s.w, s.h,
needsBlending(), needsDithering(), contentDirty,
s.alpha, s.flags,
s.transform[0][0], s.transform[0][1],
s.transform[1][0], s.transform[1][1]);
result.append(buffer);
}
void LayerBase::drawWithOpenGL(const Region& clip,
GLint textureName, const GGLSurface& t) const
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t fbHeight = hw.getHeight();
const State& s(drawingState());
// bind our texture
validateTexture(textureName);
glEnable(GL_TEXTURE_2D);
// Dithering...
if (s.flags & ISurfaceComposer::eLayerDither) {
glEnable(GL_DITHER);
} else {
glDisable(GL_DITHER);
}
if (UNLIKELY(s.alpha < 0xFF)) {
// We have an alpha-modulation. We need to modulate all
// texture components by alpha because we're always using
// premultiplied alpha.
// If the texture doesn't have an alpha channel we can
// use REPLACE and switch to non premultiplied alpha
// blending (SRCA/ONE_MINUS_SRCA).
GLenum env, src;
if (needsBlending()) {
env = GL_MODULATE;
src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
} else {
env = GL_REPLACE;
src = GL_SRC_ALPHA;
}
const GGLfixed alpha = (s.alpha << 16)/255;
glColor4x(alpha, alpha, alpha, alpha);
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, env);
} else {
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glColor4x(0x10000, 0x10000, 0x10000, 0x10000);
if (needsBlending()) {
GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
} else {
glDisable(GL_BLEND);
}
}
if (UNLIKELY(transformed()
|| !(mFlags & DisplayHardware::DRAW_TEXTURE_EXTENSION) ))
{
//StopWatch watch("GL transformed");
Region::iterator iterator(clip);
if (iterator) {
// always use high-quality filtering with fast configurations
bool fast = !(mFlags & DisplayHardware::SLOW_CONFIG);
if (!fast && s.flags & ISurfaceComposer::eLayerFilter) {
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
const GLfixed texCoords[4][2] = {
{ 0, 0 },
{ 0, 0x10000 },
{ 0x10000, 0x10000 },
{ 0x10000, 0 }
};
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
if (!(mFlags & DisplayHardware::NPOT_EXTENSION)) {
// find the smallest power-of-two that will accommodate our surface
GLuint tw = 1 << (31 - clz(t.width));
GLuint th = 1 << (31 - clz(t.height));
if (tw < t.width) tw <<= 1;
if (th < t.height) th <<= 1;
// this divide should be relatively fast because it's
// a power-of-two (optimized path in libgcc)
GLfloat ws = GLfloat(t.width) /tw;
GLfloat hs = GLfloat(t.height)/th;
glScalef(ws, hs, 1.0f);
}
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(2, GL_FIXED, 0, mVertices);
glTexCoordPointer(2, GL_FIXED, 0, texCoords);
Rect r;
while (iterator.iterate(&r)) {
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
if (!fast && s.flags & ISurfaceComposer::eLayerFilter) {
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
} else {
Region::iterator iterator(clip);
if (iterator) {
Rect r;
GLint crop[4] = { 0, t.height, t.width, -t.height };
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
int x = tx();
int y = ty();
y = fbHeight - (y + t.height);
while (iterator.iterate(&r)) {
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawTexiOES(x, y, 0, t.width, t.height);
}
}
}
}
void LayerBase::drawWithOpenGL(const Region& clip, const Texture& texture) const
{
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const uint32_t fbHeight = hw.getHeight();
const State& s(drawingState());
// bind our texture
TextureManager::activateTexture(texture, needsFiltering());
uint32_t width = texture.width;
uint32_t height = texture.height;
GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
int renderEffect = mFlinger->getRenderEffect();
int renderColorR = mFlinger->getRenderColorR();
int renderColorG = mFlinger->getRenderColorG();
int renderColorB = mFlinger->getRenderColorB();
bool noEffect = renderEffect == 0;
if (UNLIKELY(s.alpha < 0xFF) && noEffect) {
const GLfloat alpha = s.alpha * (1.0f/255.0f);
if (mPremultipliedAlpha) {
glColor4f(alpha, alpha, alpha, alpha);
} else {
glColor4f(1, 1, 1, alpha);
}
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
} else if (noEffect) {
glColor4f(1, 1, 1, 1);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
if (needsBlending()) {
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
} else {
glDisable(GL_BLEND);
}
} else {
// Apply a render effect, which is simple color masks for now.
GLenum env, src;
env = GL_MODULATE;
src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
const GGLfixed alpha = (s.alpha << 16)/255;
switch (renderEffect) {
case RENDER_EFFECT_NIGHT:
glColor4x(alpha, alpha*0.6204, alpha*0.3018, alpha);
break;
case RENDER_EFFECT_TERMINAL:
glColor4x(0, alpha, 0, alpha);
break;
case RENDER_EFFECT_BLUE:
glColor4x(0, 0, alpha, alpha);
break;
case RENDER_EFFECT_AMBER:
glColor4x(alpha, alpha*0.75, 0, alpha);
break;
case RENDER_EFFECT_SALMON:
glColor4x(alpha, alpha*0.5, alpha*0.5, alpha);
break;
case RENDER_EFFECT_FUSCIA:
glColor4x(alpha, 0, alpha*0.5, alpha);
break;
case RENDER_EFFECT_N1_CALIBRATED_N:
glColor4x(alpha*renderColorR/1000, alpha*renderColorG/1000, alpha*renderColorB/1000, alpha);
break;
case RENDER_EFFECT_N1_CALIBRATED_R:
glColor4x(alpha*(renderColorR-50)/1000, alpha*renderColorG/1000, alpha*(renderColorB-30)/1000, alpha);
break;
case RENDER_EFFECT_N1_CALIBRATED_C:
glColor4x(alpha*renderColorR/1000, alpha*renderColorG/1000, alpha*(renderColorB+30)/1000, alpha);
break;
case RENDER_EFFECT_RED:
glColor4x(alpha, 0, 0, alpha);
break;
}
glEnable(GL_BLEND);
glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, env);
}
/*
* compute texture coordinates
* here, we handle NPOT, cropping and buffer transformations
*/
GLfloat cl, ct, cr, cb;
if (!mBufferCrop.isEmpty()) {
// source is cropped
const GLfloat us = (texture.NPOTAdjust ? texture.wScale : 1.0f) / width;
const GLfloat vs = (texture.NPOTAdjust ? texture.hScale : 1.0f) / height;
cl = mBufferCrop.left * us;
ct = mBufferCrop.top * vs;
cr = mBufferCrop.right * us;
cb = mBufferCrop.bottom * vs;
} else {
cl = 0;
ct = 0;
cr = (texture.NPOTAdjust ? texture.wScale : 1.0f);
cb = (texture.NPOTAdjust ? texture.hScale : 1.0f);
}
/*
* For the buffer transformation, we apply the rotation last.
* Since we're transforming the texture-coordinates, we need
* to apply the inverse of the buffer transformation:
* inverse( FLIP_V -> FLIP_H -> ROT_90 )
* <=> inverse( ROT_90 * FLIP_H * FLIP_V )
* = inverse(FLIP_V) * inverse(FLIP_H) * inverse(ROT_90)
* = FLIP_V * FLIP_H * ROT_270
* <=> ROT_270 -> FLIP_H -> FLIP_V
*
* The rotation is performed first, in the texture coordinate space.
*
*/
struct TexCoords {
GLfloat u;
GLfloat v;
};
enum {
// name of the corners in the texture map
LB = 0, // left-bottom
LT = 1, // left-top
RT = 2, // right-top
RB = 3 // right-bottom
};
// vertices in screen space
int vLT = LB;
int vLB = LT;
int vRB = RT;
int vRT = RB;
// the texture's source is rotated
uint32_t transform = mBufferTransform;
if (transform & HAL_TRANSFORM_ROT_90) {
vLT = RB;
vLB = LB;
vRB = LT;
vRT = RT;
}
if (transform & HAL_TRANSFORM_FLIP_V) {
swap(vLT, vLB);
swap(vRT, vRB);
}
if (transform & HAL_TRANSFORM_FLIP_H) {
swap(vLT, vRT);
swap(vLB, vRB);
}
TexCoords texCoords[4];
texCoords[vLT].u = cl;
texCoords[vLT].v = ct;
texCoords[vLB].u = cl;
texCoords[vLB].v = cb;
texCoords[vRB].u = cr;
texCoords[vRB].v = cb;
texCoords[vRT].u = cr;
texCoords[vRT].v = ct;
if (needsDithering()) {
glEnable(GL_DITHER);
} else {
glDisable(GL_DITHER);
}
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(2, GL_FLOAT, 0, mVertices);
glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
Region::const_iterator it = clip.begin();
Region::const_iterator const end = clip.end();
while (it != end) {
const Rect& r = *it++;
const GLint sy = fbHeight - (r.top + r.height());
glScissor(r.left, sy, r.width(), r.height());
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
}
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
void LayerBase::validateVisibility(const Transform& planeTransform)
{
const Layer::State& s(drawingState());
const Transform tr(planeTransform * s.transform);
const bool transformed = tr.transformed();
const Point size(getPhysicalSize());
uint32_t w = size.x;
uint32_t h = size.y;
tr.transform(mVertices[0], 0, 0);
tr.transform(mVertices[1], 0, h);
tr.transform(mVertices[2], w, h);
tr.transform(mVertices[3], w, 0);
if (UNLIKELY(transformed)) {
// NOTE: here we could also punt if we have too many rectangles
// in the transparent region
if (tr.preserveRects()) {
// transform the transparent region
transparentRegionScreen = tr.transform(s.transparentRegion);
} else {
// transformation too complex, can't do the transparent region
// optimization.
transparentRegionScreen.clear();
}
} else {
transparentRegionScreen = s.transparentRegion;
}
// cache a few things...
mOrientation = tr.getOrientation();
mTransformedBounds = tr.makeBounds(w, h);
mTransformed = transformed;
mLeft = tr.tx();
mTop = tr.ty();
// see if we can/should use 2D h/w with the new configuration
mCanUseCopyBit = false;
copybit_device_t* copybit = mFlinger->getBlitEngine();
if (copybit) {
const int step = copybit->get(copybit, COPYBIT_ROTATION_STEP_DEG);
const int scaleBits = copybit->get(copybit, COPYBIT_SCALING_FRAC_BITS);
mCanUseCopyBit = true;
if ((mOrientation < 0) && (step > 1)) {
// arbitrary orientations not supported
mCanUseCopyBit = false;
} else if ((mOrientation > 0) && (step > 90)) {
// 90 deg rotations not supported
mCanUseCopyBit = false;
} else if ((tr.getType() & SkMatrix::kScale_Mask) && (scaleBits < 12)) {
// arbitrary scaling not supported
mCanUseCopyBit = false;
}
#if HONOR_PREMULTIPLIED_ALPHA
else if (needsBlending() && mPremultipliedAlpha) {
// pre-multiplied alpha not supported
mCanUseCopyBit = false;
}
#endif
else {
// here, we determined we can use copybit
if (tr.getType() & SkMatrix::kScale_Mask) {
// and we have scaling
if (!transparentRegionScreen.isRect()) {
// we punt because blending is cheap (h/w) and the region is
// complex, which may causes artifacts when copying
// scaled content
transparentRegionScreen.clear();
}
}
}
}
}
