static void draw(EGLmanager *eglman)
{
VGfloat black[] = {0.f, 0.f, 0.f, 1.f};
// Render 3D scene by GL
eglBindAPI(EGL_OPENGL_ES_API);
eglMakeCurrent(eglman->dpy, eglman->pbuf_surface, eglman->pbuf_surface, eglman->es_ctx);
// Modify GL texture source
glClearColor(1.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, TEXTURE_WIDTH/2, TEXTURE_HEIGHT/2);
glClearColor(0.0, 1.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, TEXTURE_WIDTH/2, 0, 0, 0, TEXTURE_WIDTH/2, TEXTURE_HEIGHT/2);
glClearColor(0.0, 0.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, TEXTURE_HEIGHT/2, 0, 0, TEXTURE_WIDTH/2, TEXTURE_HEIGHT/2);
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0, TEXTURE_WIDTH/2, TEXTURE_HEIGHT/2, 0, 0, TEXTURE_WIDTH/2, TEXTURE_HEIGHT/2);
// Make current to VG content
eglBindAPI(EGL_OPENVG_API);
eglMakeCurrent(eglman->dpy, eglman->win_surface, eglman->win_surface, eglman->vg_ctx);
// Draw VGImage target
vgSetfv(VG_CLEAR_COLOR, 4, black);
vgClear(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
vgSeti(VG_BLEND_MODE, VG_BLEND_SRC);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
vgLoadIdentity();
vgTranslate(WINDOW_WIDTH/2.0f, WINDOW_HEIGHT/2.0f);
vgScale((VGfloat)WINDOW_WIDTH/(VGfloat)TEXTURE_WIDTH * 0.8f, (VGfloat)WINDOW_HEIGHT/(VGfloat)TEXTURE_HEIGHT * 0.8f);
vgTranslate(-TEXTURE_WIDTH/2.0f, -TEXTURE_HEIGHT/2.0f);
vgDrawImage(eglman->vg_image);
// Swap buffer
eglSwapBuffers(eglman->dpy, eglman->win_surface);
return;
}
static bool vg_frame(void *data, const void *frame, unsigned width, unsigned height, unsigned pitch, const char *msg)
{
RARCH_PERFORMANCE_INIT(vg_fr);
RARCH_PERFORMANCE_START(vg_fr);
vg_t *vg = (vg_t*)data;
if (width != vg->mRenderWidth || height != vg->mRenderHeight || vg->should_resize)
{
vg->mRenderWidth = width;
vg->mRenderHeight = height;
vg_calculate_quad(vg);
matrix_3x3_quad_to_quad(
vg->x1, vg->y1, vg->x2, vg->y1, vg->x2, vg->y2, vg->x1, vg->y2,
// needs to be flipped, Khronos loves their bottom-left origin
0, height, width, height, width, 0, 0, 0,
&vg->mTransformMatrix);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
vgLoadMatrix(vg->mTransformMatrix.data);
vg->should_resize = false;
}
vgSeti(VG_SCISSORING, VG_FALSE);
vgClear(0, 0, vg->mScreenWidth, vg->mScreenHeight);
vgSeti(VG_SCISSORING, VG_TRUE);
RARCH_PERFORMANCE_INIT(vg_image);
RARCH_PERFORMANCE_START(vg_image);
vg_copy_frame(vg, frame, width, height, pitch);
RARCH_PERFORMANCE_STOP(vg_image);
vgDrawImage(vg->mImage);
if (msg && vg->mFontsOn)
vg_draw_message(vg, msg);
vg->driver->update_window_title(vg);
RARCH_PERFORMANCE_STOP(vg_fr);
vg->driver->swap_buffers(vg);
return true;
}
void CTReadWriteChild::PixmapSurfaceFuncL()
{
vgDrawImage(iImage);
VgLeaveIfErrorL();
}
void CTReadWriteChild::VgImageFuncL()
{
vgDrawImage(iImage);
VgLeaveIfErrorL();
}
TBool CHuiFxVg10TransformFilter::Draw(CHuiFxEngine& /*aEngine*/, CHuiGc& /*aGc*/,
CHuiFxRenderbuffer& aTarget, CHuiFxRenderbuffer& aSource,
const TRect& /*aTargetRect*/, const TRect& aSourceRect, TBool /*aHasSurface*/)
{
aSource.BindAsTexture(ERenderbufferUsageReadOnly);
aTarget.BindAsRenderTarget();
VGImage srcImage = (reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aSource))->AcquireSubImage(aSourceRect);
vgLoadIdentity();
vgScale(iScaleX, iScaleY);
vgSeti(VG_BLEND_MODE, VG_BLEND_SRC);
vgSeti(VG_IMAGE_MODE, VG_DRAW_IMAGE_NORMAL);
identity();
// Matrix multiplication is generally not commutative.
// Therefore the order of the transformations matters.
// In order to prevent the scaling ang skewing from affecting the translation,
// if seems wiser to do the translation first, otherwise the results seem to be unpredictable.
// Translation
if (iTranslationX != 0.0f || iTranslationY != 0.0f || iTranslationZ != 0.0f)
{
translate(iTranslationX, iTranslationY, iTranslationZ);
}
// Scaling
if (iScaleX != 1.0f || iScaleY != 1.0f || iScaleZ != 1.0f)
{
translate(iScaleOriginX, iScaleOriginY, iScaleOriginZ);
scale(iScaleX, iScaleY, iScaleZ);
translate(-iScaleOriginX, -iScaleOriginY, -iScaleOriginZ);
}
// Skewing
if (iSkewAngleX != 0.0f || iSkewAngleY != 0.0f || iSkewAngleZ != 0.0f)
{
const TReal32 radsPerDeg = 2.0f * (float)M_PI / 360.0f;
TReal32 skewX = tan(iSkewAngleX * radsPerDeg);
TReal32 skewY = tan(iSkewAngleY * radsPerDeg);
TReal32 skewZ = tan(iSkewAngleZ * radsPerDeg);
translate(iSkewOriginX, iSkewOriginY, iSkewOriginZ);
shear(skewX, skewY, skewZ);
translate(-iSkewOriginX, -iSkewOriginY, -iSkewOriginZ);
}
// Rotation
if (iRotationAngle != 0.0f)
{
translate(iRotationOriginX, iRotationOriginY, iRotationOriginZ);
rotate(iRotationAngle, iRotationAxisX, iRotationAxisY, iRotationAxisZ);
translate(-iRotationOriginX, -iRotationOriginY, -iRotationOriginZ);
}
/*
// Translation
if (iTranslationX != 0.0f || iTranslationY != 0.0f || iTranslationZ != 0.0f)
{
translate(iTranslationX, iTranslationY, iTranslationZ);
}
*/
ASSERT(!"TODO: implement the following:");
// TODO: project vertices
// TODO: create warp quad matrix from projected vertices,
// see http://torus.untergrund.net/misc/projective_image_warping.pdf
// TODO load matrix
vgDrawImage(srcImage);
// TODO: pixel relative parameters
HUIFX_VG_INVARIANT();
(reinterpret_cast<CHuiFxVg10RenderbufferBase*>(&aSource))->ReleaseSubImage(srcImage);
aTarget.UnbindAsRenderTarget();
aSource.UnbindAsTexture();
return ETrue;
}
