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Added support for upscaling bitmap images using linear filtering.

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This commit is contained in:
Leon Styhre 2021-08-19 20:16:42 +02:00
parent 8e25609d4f
commit 6e882dd564
11 changed files with 80 additions and 57 deletions
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7
es-core/src/components/ImageComponent.cpp
View file

@ -138,7 +138,7 @@ void ImageComponent::resize()
onSizeChanged();
}
void ImageComponent::setImage(std::string path, bool tile)
void ImageComponent::setImage(std::string path, bool tile, bool linearMagnify)
{
// Always load bundled graphic resources statically, unless mForceLoad has been set.
// This eliminates annoying texture pop-in problems that would otherwise occur.
@ -150,10 +150,11 @@ void ImageComponent::setImage(std::string path, bool tile)
if (mDefaultPath.empty() || !ResourceManager::getInstance()->fileExists(mDefaultPath))
mTexture.reset();
else
mTexture = TextureResource::get(mDefaultPath, tile, mForceLoad, mDynamic);
mTexture =
TextureResource::get(mDefaultPath, tile, mForceLoad, mDynamic, linearMagnify);
}
else {
mTexture = TextureResource::get(path, tile, mForceLoad, mDynamic);
mTexture = TextureResource::get(path, tile, mForceLoad, mDynamic, linearMagnify);
}
resize();

2
es-core/src/components/ImageComponent.h
View file

@ -24,7 +24,7 @@ public:
// Loads the image at the given filepath. Will tile if tile is true (retrieves texture
// as tiling, creates vertices accordingly).
void setImage(std::string path, bool tile = false);
void setImage(std::string path, bool tile = false, bool linearMagnify = false);
// Loads an image from memory.
void setImage(const char* data, size_t length, bool tile = false);
// Use an already existing texture.

2
es-core/src/components/NinePatchComponent.cpp
View file

@ -59,7 +59,7 @@ void NinePatchComponent::buildVertices()
else
scaleFactor = glm::clamp(Renderer::getScreenWidthModifier(), 0.4f, 3.0f);
mTexture = TextureResource::get(mPath, false, false, true, scaleFactor);
mTexture = TextureResource::get(mPath, false, false, true, true, scaleFactor);
if (mTexture->getSize() == glm::ivec2{}) {
mVertices = nullptr;

13
es-core/src/renderers/Renderer.h
View file

@ -167,12 +167,13 @@ namespace Renderer
void setupWindow();
bool createContext();
void destroyContext();
unsigned int createTexture(const Texture::Type _type,
const bool _linear,
const bool _repeat,
const unsigned int _width,
const unsigned int _height,
void* _data);
unsigned int createTexture(const Texture::Type type,
const bool linearMinify,
const bool linearMagnify,
const bool repeat,
const unsigned int width,
const unsigned int height,
void* data);
void destroyTexture(const unsigned int _texture);
void updateTexture(const unsigned int _texture,
const Texture::Type _type,

40
es-core/src/renderers/Renderer_GL21.cpp
View file

@ -138,7 +138,7 @@ namespace Renderer
}
uint8_t data[4] = {255, 255, 255, 255};
whiteTexture = createTexture(Texture::RGBA, false, true, 1, 1, data);
whiteTexture = createTexture(Texture::RGBA, false, false, true, 1, 1, data);
GL_CHECK_ERROR(glClearColor(0.0f, 0.0f, 0.0f, 1.0f));
GL_CHECK_ERROR(glEnable(GL_TEXTURE_2D));
@ -162,32 +162,35 @@ namespace Renderer
sdlContext = nullptr;
}
unsigned int createTexture(const Texture::Type _type,
const bool _linear,
const bool _repeat,
const unsigned int _width,
const unsigned int _height,
void* _data)
unsigned int createTexture(const Texture::Type type,
const bool linearMinify,
const bool linearMagnify,
const bool repeat,
const unsigned int width,
const unsigned int height,
void* data)
{
const GLenum type = convertTextureType(_type);
const GLenum textureType = convertTextureType(type);
unsigned int texture;
GL_CHECK_ERROR(glGenTextures(1, &texture));
GL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, texture));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
_repeat ? static_cast<GLfloat>(GL_REPEAT) :
static_cast<GLfloat>(GL_CLAMP_TO_EDGE)));
repeat ? static_cast<GLfloat>(GL_REPEAT) :
static_cast<GLfloat>(GL_CLAMP_TO_EDGE)));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
_repeat ? static_cast<GLfloat>(GL_REPEAT) :
static_cast<GLfloat>(GL_CLAMP_TO_EDGE)));
repeat ? static_cast<GLfloat>(GL_REPEAT) :
static_cast<GLfloat>(GL_CLAMP_TO_EDGE)));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
_linear ? static_cast<GLfloat>(GL_LINEAR) :
static_cast<GLfloat>(GL_NEAREST)));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
linearMinify ? static_cast<GLfloat>(GL_LINEAR) :
static_cast<GLfloat>(GL_NEAREST)));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
linearMagnify ? static_cast<GLfloat>(GL_LINEAR) :
static_cast<GLfloat>(GL_NEAREST)));
GL_CHECK_ERROR(glTexImage2D(GL_TEXTURE_2D, 0, type, _width, _height, 0, type,
GL_UNSIGNED_BYTE, _data));
GL_CHECK_ERROR(glTexImage2D(GL_TEXTURE_2D, 0, textureType, width, height, 0, textureType,
GL_UNSIGNED_BYTE, data));
return texture;
}
@ -448,7 +451,8 @@ namespace Renderer
vertices[0].saturation = parameters.fragmentSaturation;
setMatrix(getIdentity());
GLuint screenTexture = createTexture(Texture::RGBA, false, false, width, height, nullptr);
GLuint screenTexture =
createTexture(Texture::RGBA, false, false, false, width, height, nullptr);
GL_CHECK_ERROR(glBindFramebuffer(GL_READ_FRAMEBUFFER, 0));

30
es-core/src/renderers/Renderer_GLES10.cpp
View file

@ -91,7 +91,7 @@ namespace Renderer
"MISSING");
uint8_t data[4] = {255, 255, 255, 255};
whiteTexture = createTexture(Texture::RGBA, false, true, 1, 1, data);
whiteTexture = createTexture(Texture::RGBA, false, false, true, 1, 1, data);
GL_CHECK_ERROR(glClearColor(0.0f, 0.0f, 0.0f, 1.0f));
GL_CHECK_ERROR(glEnable(GL_TEXTURE_2D));
@ -111,29 +111,31 @@ namespace Renderer
sdlContext = nullptr;
}
unsigned int createTexture(const Texture::Type _type,
const bool _linear,
const bool _repeat,
const unsigned int _width,
const unsigned int _height,
void* _data)
unsigned int createTexture(const Texture::Type type,
const bool linearMinify,
const bool linearMagnify,
const bool repeat,
const unsigned int width,
const unsigned int height,
void* data)
{
const GLenum type = convertTextureType(_type);
const GLenum textureType = convertTextureType(type);
unsigned int texture;
GL_CHECK_ERROR(glGenTextures(1, &texture));
GL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, texture));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
_repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE));
repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
_repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE));
repeat ? GL_REPEAT : GL_CLAMP_TO_EDGE));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
_linear ? GL_LINEAR : GL_NEAREST));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
linearMinify ? GL_LINEAR : GL_NEAREST));
GL_CHECK_ERROR(glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
linearMagnify ? GL_LINEAR : GL_NEAREST));
GL_CHECK_ERROR(glTexImage2D(GL_TEXTURE_2D, 0, type, _width, _height, 0, type,
GL_UNSIGNED_BYTE, _data));
GL_CHECK_ERROR(glTexImage2D(GL_TEXTURE_2D, 0, textureType, width, height, 0, textureType,
GL_UNSIGNED_BYTE, data));
return texture;
}

4
es-core/src/resources/Font.cpp
View file

@ -179,8 +179,8 @@ bool Font::FontTexture::findEmpty(const glm::ivec2& size, glm::ivec2& cursor_out
void Font::FontTexture::initTexture()
{
assert(textureId == 0);
textureId = Renderer::createTexture(Renderer::Texture::ALPHA, false, false, textureSize.x,
textureSize.y, nullptr);
textureId = Renderer::createTexture(Renderer::Texture::ALPHA, false, false, false,
textureSize.x, textureSize.y, nullptr);
}
void Font::FontTexture::deinitTexture()

8
es-core/src/resources/TextureData.cpp
View file

@ -28,6 +28,7 @@ TextureData::TextureData(bool tile)
, mDataRGBA({})
, mScaleDuringLoad(1.0f)
, mScalable(false)
, mLinearMagnify(false)
, mWidth(0)
, mHeight(0)
, mSourceWidth(0.0f)
@ -196,9 +197,10 @@ bool TextureData::uploadAndBind()
return false;
// Upload texture.
mTextureID = Renderer::createTexture(
Renderer::Texture::RGBA, true, mTile, static_cast<const unsigned int>(mWidth),
static_cast<const unsigned int>(mHeight), mDataRGBA.data());
mTextureID =
Renderer::createTexture(Renderer::Texture::RGBA, true, mLinearMagnify, mTile,
static_cast<const unsigned int>(mWidth),
static_cast<const unsigned int>(mHeight), mDataRGBA.data());
}
return true;
}

3
es-core/src/resources/TextureData.h
View file

@ -56,6 +56,8 @@ public:
// Define a factor for scaling the file when loading it (1.0f = no scaling).
void setScaleDuringLoad(float scale) { mScaleDuringLoad = scale; }
// Whether to use linear filtering when magnifying the texture.
void setLinearMagnify(bool setting) { mLinearMagnify = setting; }
std::vector<unsigned char> getRawRGBAData() { return mDataRGBA; }
std::string getTextureFilePath() { return mPath; }
@ -73,6 +75,7 @@ private:
float mSourceHeight;
float mScaleDuringLoad;
bool mScalable;
bool mLinearMagnify;
bool mReloadable;
};

21
es-core/src/resources/TextureResource.cpp
View file

@ -16,10 +16,8 @@ std::map<TextureResource::TextureKeyType, std::weak_ptr<TextureResource>>
TextureResource::sTextureMap;
std::set<TextureResource*> TextureResource::sAllTextures;
TextureResource::TextureResource(const std::string& path,
bool tile,
bool dynamic,
float scaleDuringLoad)
TextureResource::TextureResource(
const std::string& path, bool tile, bool dynamic, bool linearMagnify, float scaleDuringLoad)
: mTextureData(nullptr)
, mForceLoad(false)
{
@ -33,6 +31,7 @@ TextureResource::TextureResource(const std::string& path,
data->initFromPath(path);
if (scaleDuringLoad != 1.0f)
data->setScaleDuringLoad(scaleDuringLoad);
data->setLinearMagnify(linearMagnify);
// Force the texture manager to load it using a blocking load.
sTextureDataManager.load(data, true);
}
@ -42,6 +41,7 @@ TextureResource::TextureResource(const std::string& path,
data->initFromPath(path);
if (scaleDuringLoad != 1.0f)
data->setScaleDuringLoad(scaleDuringLoad);
data->setLinearMagnify(linearMagnify);
// Load it so we can read the width/height.
data->load();
}
@ -143,14 +143,19 @@ bool TextureResource::bind()
}
}
std::shared_ptr<TextureResource> TextureResource::get(
const std::string& path, bool tile, bool forceLoad, bool dynamic, float scaleDuringLoad)
std::shared_ptr<TextureResource> TextureResource::get(const std::string& path,
bool tile,
bool forceLoad,
bool dynamic,
bool linearMagnify,
float scaleDuringLoad)
{
std::shared_ptr<ResourceManager>& rm = ResourceManager::getInstance();
const std::string canonicalPath = Utils::FileSystem::getCanonicalPath(path);
if (canonicalPath.empty()) {
std::shared_ptr<TextureResource> tex(new TextureResource("", tile, false, scaleDuringLoad));
std::shared_ptr<TextureResource> tex(
new TextureResource("", tile, false, linearMagnify, scaleDuringLoad));
// Make sure we get properly deinitialized even though we do nothing on reinitialization.
rm->addReloadable(tex);
return tex;
@ -167,7 +172,7 @@ std::shared_ptr<TextureResource> TextureResource::get(
// Need to create it.
std::shared_ptr<TextureResource> tex;
tex = std::shared_ptr<TextureResource>(
new TextureResource(key.first, tile, dynamic, scaleDuringLoad));
new TextureResource(key.first, tile, dynamic, linearMagnify, scaleDuringLoad));
std::shared_ptr<TextureData> data = sTextureDataManager.get(tex.get());
// Is it an SVG?

7
es-core/src/resources/TextureResource.h
View file

@ -29,6 +29,7 @@ public:
bool tile = false,
bool forceLoad = false,
bool dynamic = true,
bool linearMagnify = false,
float scaleDuringLoad = 1.0f);
void initFromPixels(const unsigned char* dataRGBA, size_t width, size_t height);
virtual void initFromMemory(const char* data, size_t length);
@ -60,7 +61,11 @@ public:
static size_t getTotalTextureSize();
protected:
TextureResource(const std::string& path, bool tile, bool dynamic, float scaleDuringLoad);
TextureResource(const std::string& path,
bool tile,
bool dynamic,
bool linearMagnify,
float scaleDuringLoad);
virtual void unload(std::shared_ptr<ResourceManager>& rm);
virtual void reload(std::shared_ptr<ResourceManager>& rm);