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Mipmap generation, trilinear,anisotropic filtering for OffscreenQmlSurface

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This commit is contained in:
Anthony J. Thibault 2016-08-17 18:18:13 -07:00
parent af2c31f29b
commit df17913801
3 changed files with 27 additions and 11 deletions
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4
libraries/gl/src/gl/OffscreenQmlSurface.cpp
View file

@ -166,7 +166,7 @@ private:
QMyQuickRenderControl* _renderControl{ nullptr };
FramebufferPtr _fbo;
RenderbufferPtr _depthStencil;
TextureRecycler _textures;
TextureRecycler _textures { true };
GLTextureEscrow _escrow;
uint64_t _lastRenderTime{ 0 };
@ -399,6 +399,8 @@ void OffscreenQmlRenderThread::render() {
glGetError();
}
Context::Bound(oglplus::Texture::Target::_2D, *texture).GenerateMipmap();
// FIXME probably unecessary
DefaultFramebuffer().Bind(Framebuffer::Target::Draw);
_quickWindow->resetOpenGLState();

32
libraries/gl/src/gl/OglplusHelpers.cpp
View file

@ -509,16 +509,28 @@ TexturePtr TextureRecycler::getNextTexture() {
using namespace oglplus;
if (_readyTextures.empty()) {
TexturePtr newTexture(new Texture());
Context::Bound(oglplus::Texture::Target::_2D, *newTexture)
.MinFilter(TextureMinFilter::Linear)
.MagFilter(TextureMagFilter::Linear)
.WrapS(TextureWrap::ClampToEdge)
.WrapT(TextureWrap::ClampToEdge)
.Image2D(
0, PixelDataInternalFormat::RGBA8,
_size.x, _size.y,
0, PixelDataFormat::RGB, PixelDataType::UnsignedByte, nullptr
);
if (_useMipmaps) {
Context::Bound(oglplus::Texture::Target::_2D, *newTexture)
.MinFilter(TextureMinFilter::LinearMipmapLinear)
.MagFilter(TextureMagFilter::Linear)
.WrapS(TextureWrap::ClampToEdge)
.WrapT(TextureWrap::ClampToEdge)
.Anisotropy(8.0f)
.LODBias(-0.2f)
.Image2D(0, PixelDataInternalFormat::RGBA8,
_size.x, _size.y,
0, PixelDataFormat::RGB, PixelDataType::UnsignedByte, nullptr);
} else {
Context::Bound(oglplus::Texture::Target::_2D, *newTexture)
.MinFilter(TextureMinFilter::Linear)
.MagFilter(TextureMagFilter::Linear)
.WrapS(TextureWrap::ClampToEdge)
.WrapT(TextureWrap::ClampToEdge)
.Image2D(0, PixelDataInternalFormat::RGBA8,
_size.x, _size.y,
0, PixelDataFormat::RGB, PixelDataType::UnsignedByte, nullptr);
}
GLuint texId = GetName(*newTexture);
_allTextures[texId] = TexInfo{ newTexture, _size };
_readyTextures.push(newTexture);

2
libraries/gl/src/gl/OglplusHelpers.h
View file

@ -190,6 +190,7 @@ using BasicFramebufferWrapperPtr = std::shared_ptr<BasicFramebufferWrapper>;
class TextureRecycler {
public:
TextureRecycler(bool useMipmaps) : _useMipmaps(useMipmaps) {}
void setSize(const uvec2& size);
void clear();
TexturePtr getNextTexture();
@ -212,4 +213,5 @@ private:
Map _allTextures;
Queue _readyTextures;
uvec2 _size{ 1920, 1080 };
bool _useMipmaps;
};