Files
TSE/TSE_Core/src/elements/Texture.cpp

360 lines
7.9 KiB
C++

#include "Texture.hpp"
#include "Debug.hpp"
#include "Color.hpp"
#include "ErrorTextureData.hpp"
TSE::Texture::Texture(const string &path)
{
FREE_IMAGE_FORMAT fif = FREE_IMAGE_FORMAT::FIF_UNKNOWN;
bmp = nullptr;
imagePtr = nullptr;
Size = Vector2(0,0);
fif = FreeImage_GetFileType(path.c_str(), 0);
if(fif == FREE_IMAGE_FORMAT::FIF_UNKNOWN)
fif = FreeImage_GetFIFFromFilename(path.c_str());
if(fif == FREE_IMAGE_FORMAT::FIF_UNKNOWN)
{
TSE_ERROR("Failed to load image. Unsupported Format.");
Bpp = 24;
makeError(*this);
return;
}
if(FreeImage_FIFSupportsReading(fif))
{
bmp = FreeImage_Load(fif, path.c_str());
if(FreeImage_GetBPP(bmp) != 32)
{
auto tmpBmp = FreeImage_ConvertTo32Bits(bmp);
FreeImage_Unload(bmp);
bmp = tmpBmp;
}
}
if(bmp == nullptr)
{
TSE_ERROR("Failed to load image. Bitmap was nullptr.");
Bpp = 24;
makeError(*this);
return;
}
Bpp = FreeImage_GetBPP(bmp);
imagePtr = FreeImage_GetBits(bmp);
switch (Bpp)
{
case 32:
chanels = 4;
break;
case 24:
chanels = 3;
case 8:
chanels = 4;
}
Size = Vector2(FreeImage_GetWidth(bmp), FreeImage_GetHeight(bmp));
regist();
}
TSE::Texture::Texture(const int &width, const int &height, int bpp)
{
switch (bpp)
{
case 32:
chanels = 4;
break;
case 24:
chanels = 3;
case 8:
chanels = 4;
}
Bpp = bpp;
Size = Vector2(width, height);
bmp = FreeImage_Allocate(width, height, bpp);
imagePtr = FreeImage_GetBits(bmp);
regist();
}
TSE::Texture::Texture(const Vector2 &size, int bpp)
{
switch (bpp)
{
case 32:
chanels = 4;
break;
case 24:
chanels = 3;
case 8:
chanels = 4;
}
Bpp = bpp;
Size = size;
bmp = FreeImage_Allocate(size.x, size.y, bpp);
imagePtr = FreeImage_GetBits(bmp);
regist();
}
TSE::Texture::~Texture()
{
if(bmp != nullptr)
{
FreeImage_Unload(bmp);
bmp = nullptr;
}
if(TextureID != 0)
{
//glDeleteTextures(1, &TextureID); --> need to do in platform openGL
PlatformDestroy();
TextureID = 0;
}
}
TSE::uint TSE::Texture::bpp() const
{
return Bpp;
}
TSE::Vector2 TSE::Texture::size() const
{
return Size;
}
float TSE::Texture::Width() const
{
return Size.x;
}
float TSE::Texture::Height() const
{
return Size.y;
}
TSE::byte TSE::Texture::Chanels() const
{
return chanels;
}
TSE::byte *TSE::Texture::GetImagePtr() const
{
return imagePtr;
}
void TSE::Texture::SetPixel(const Vector2 &pos, const Color &c)
{
SetPixel(pos.x, pos.y, c);
}
void TSE::Texture::GetPixel(const Vector2 &pos, Color &c) const
{
GetPixel(pos.x, pos.y, c);
}
void TSE::Texture::SetPixelNoApply(const Vector2 &pos, const Color &c)
{
SetPixelNoApply(pos.x, pos.y, c);
}
void TSE::Texture::ToSprite(Sprite &s)
{
s = Sprite(this, Rect(0,0,1,1));
}
void TSE::Texture::SetChanels(const byte &ch)
{
chanels = ch;
}
TSE::uint TSE::Texture::GetTextureId() const
{
return TextureID;
}
void TSE::Texture::SetTextureId(uint id)
{
TextureID = id;
}
void TSE::Texture::SetPixel(const int &x, const int &y, const Color &c)
{
SetPixelNoApply(x,y,c);
Apply();
}
void TSE::Texture::GetPixel(const int &x, const int &y, Color &c) const
{
if(x >= Width() || x < 0 ||y >= Height() || y < 0)
{
TSE_WARNING("trying to access pixel outside of texture.\n pixel: (" + std::to_string(x) + ";" + std::to_string(y) + ")\nTexture size: (" + std::to_string(Width()) + ";" + std::to_string(Height()) );
return;
}
byte* pixel = getPixelPointer(x,y);
byte b = *pixel++;
byte g = *pixel++;
byte r = *pixel++;
byte a = *pixel++;
if(bpp() == 8)
c = Color(r,r,r);
else if(bpp() == 24)
c = Color(r,g,b,a);
else if(bpp() == 32)
c = Color(r,g,b);
}
void TSE::Texture::Fill(const Color &c)
{
for (int x = 0; x < Width(); x++)
{
for (int y = 0; y < Height(); y++)
{
SetPixelNoApply(x,y,c);
}
}
Apply();
}
void TSE::Texture::SetPixelNoApply(const int &x, const int &y, const Color &c)
{
if(x >= Width() || x < 0 ||y >= Height() || y < 0)
{
TSE_WARNING("trying to access pixel outside of texture.\n pixel: (" + std::to_string(x) + ";" + std::to_string(y) + ")\nTexture size: (" + std::to_string(Width()) + ";" + std::to_string(Height()) );
return;
}
byte* pixel = getPixelPointer(x,y);
if(chanels == 4 && bpp() == 8)
{
byte r2bit = static_cast<byte>(c.r * 3.0f);
byte g2bit = static_cast<byte>(c.g * 3.0f);
byte b2bit = static_cast<byte>(c.b * 3.0f);
byte a2bit = static_cast<byte>(c.a * 3.0f);
byte result = (r2bit << 6) | (g2bit << 4) | (b2bit << 2) | a2bit;
*pixel++ = result;
return;
}
*pixel++ = c.B();
if(bpp() > 8)
{
*pixel++ = c.G();
*pixel++ = c.R();
if(bpp() > 24)
*pixel++ = c.A();
}
}
void TSE::Texture::AddPixelNoApply(const int &x, const int &y, const Color &c)
{
if(x >= Width() || x < 0 ||y >= Height() || y < 0)
{
TSE_WARNING("trying to access pixel outside of texture.\n pixel: (" + std::to_string(x) + ";" + std::to_string(y) + ")\nTexture size: (" + std::to_string(Width()) + ";" + std::to_string(Height()) );
return;
}
byte* pixel = getPixelPointer(x,y);
if(chanels == 4 && bpp() == 8) //TODO add propper adding, becouse currently is only setting
{
byte r2bit = static_cast<byte>(c.r * 3.0f);
byte g2bit = static_cast<byte>(c.g * 3.0f);
byte b2bit = static_cast<byte>(c.b * 3.0f);
byte a2bit = static_cast<byte>(c.a * 3.0f);
byte result = (r2bit << 6) | (g2bit << 4) | (b2bit << 2) | a2bit;
*pixel++ = result;
return;
}
Color bc(pixel[2], pixel[1], pixel[0], pixel[3]);
bc = c + bc;
*pixel++ = bc.B();
if(bpp() > 8)
{
*pixel++ = bc.G();
*pixel++ = bc.R();
if(bpp() > 24)
*pixel++ = bc.A();
}
}
void TSE::Texture::Recreate(const int &x, const int &y, const int &bpp, const int &chanels)
{
if(bmp != nullptr)
{
FreeImage_Unload(bmp);
bmp = nullptr;
}
if(TextureID != 0)
{
PlatformDestroy();
TextureID = 0;
}
this->chanels = chanels;
Bpp = bpp;
Size = Vector2(x, y);
bmp = FreeImage_Allocate(x, y, bpp);
imagePtr = FreeImage_GetBits(bmp);
regist();
}
void TSE::Texture::SavePNG(const std::string &path) const
{
if(!FreeImage_Save(FREE_IMAGE_FORMAT::FIF_PNG, bmp, path.c_str(), PNG_Z_NO_COMPRESSION))
TSE_ERROR("Failed to save Image to \"" + path + "\"");
}
TSE::byte *TSE::Texture::getPixelPointer(const int &x, const int &y) const
{
int alphaoffset = y * 2;
if(bpp() > 24)
alphaoffset = 0;
int offset = ((y * Width() + x) * (bpp() / 8) + alphaoffset);
return imagePtr + offset;
}
void TSE::Texture::makeError(Texture &tex)
{
tex.Bpp = errorTexBpp;
tex.chanels = errorTexChannels;
tex.Size = Vector2(errorTexWidth, errorTexHeight);
tex.bmp = FreeImage_ConvertFromRawBits(
const_cast<BYTE*>(errorTextureData), // wichtig: cast!
errorTexWidth,
errorTexHeight,
errorTexWidth * errorTexChannels,
errorTexBpp,
FI_RGBA_RED_MASK,
FI_RGBA_GREEN_MASK,
FI_RGBA_BLUE_MASK,
true // top-down
);
tex.imagePtr = FreeImage_GetBits(tex.bmp);
tex.regist();
}
void TSE::Texture::bind() const
{
helper->Bind(this);
}
void TSE::Texture::unbind() const
{
helper->UnBind(this);
}
void TSE::Texture::Apply()
{
helper->Apply(this);
}
void TSE::Texture::regist()
{
helper->Regist(this);
}
void TSE::Texture::PlatformDestroy()
{
helper->PlatromDestroy(this);
}