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Implement cropped and rescaling texture hack

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This commit is contained in:
Jonas Kulla 2014-11-03 00:23:37 +01:00
parent f7a3e3c5d2
commit 9506c05ba6
3 changed files with 177 additions and 3 deletions
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125
src/bitmap.cpp
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@ -43,6 +43,7 @@
#include "filesystem.h"
#include "font.h"
#include "eventthread.h"
#include "debugwriter.h"
#define GUARD_MEGA \
{ \
@ -100,10 +101,20 @@ struct BitmapPrivate
* ourselves the expensive blending calculation */
pixman_region16_t tainted;
bool isCrop;
CropTexture cropTex;
TEX::ID cropTexTex;
bool isResized;
Vec2i resizedSize;
TEX::ID resTex;
BitmapPrivate(Bitmap *self)
: self(self),
megaSurface(0),
surface(0)
surface(0),
isCrop(false),
isResized(false)
{
format = SDL_AllocFormat(SDL_PIXELFORMAT_ABGR8888);
@ -167,7 +178,10 @@ struct BitmapPrivate
void bindTexture(ShaderBase &shader)
{
TEX::bind(gl.tex);
shader.setTexSize(Vec2i(gl.width, gl.height));
if (isCrop)
shader.setTexSize(Vec2i(cropTex.w, cropTex.h));
else
shader.setTexSize(Vec2i(gl.width, gl.height));
}
void bindFBO()
@ -242,14 +256,114 @@ Bitmap::Bitmap(const char *filename)
throw Exception(Exception::SDLError, "Error loading image '%s': %s",
filename, SDL_GetError());
bool isCrop = false;
CropTexture cropTex;
const std::vector<CropTexture> &crops = shState->config().cropTexs;
for (size_t i = 0; i < crops.size(); ++i)
{
if (crops[i].filename != filename)
continue;
Debug() << "Loading cropped texture:" << filename << crops[i].w << crops[i].h;
isCrop = true;
cropTex = crops[i];
break;
}
p->ensureFormat(imgSurf, SDL_PIXELFORMAT_ABGR8888);
if (imgSurf->w > glState.caps.maxTexSize || imgSurf->h > glState.caps.maxTexSize)
SDL_SetSurfaceBlendMode(imgSurf, SDL_BLENDMODE_NONE);
// Try catching too large images, while trying NOT to catch giant tilesets
if ((imgSurf->w > glState.caps.maxTexSize || imgSurf->h > glState.caps.maxTexSize) && imgSurf->w != 256 && !isCrop)
{
Vec2i resSize(imgSurf->w/2, imgSurf->h/2);
while (resSize.x > glState.caps.maxTexSize || resSize.y > glState.caps.maxTexSize)
{
resSize.x = resSize.x/2;
resSize.y = resSize.y/2;
}
Debug() << "Loading image" << filename << "at resolution"
<< resSize.x << resSize.y << "down from" << imgSurf->w << imgSurf->h;
// Use texture with halved dimensions instead
p = new BitmapPrivate(this);
p->isResized = true;
p->resizedSize = resSize;
int bpp; Uint32 rm, gm, bm, am;
SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_ABGR8888, &bpp, &rm, &gm, &bm, &am);
SDL_Surface *resImg = SDL_CreateRGBSurface(0, resSize.x, resSize.y, bpp, rm, gm, bm, am);
SDL_BlitScaled(imgSurf, 0, resImg, 0);
TEX::ID tex = TEX::gen();
TEX::bind(tex);
TEX::uploadImage(resImg->w, resImg->h, resImg->pixels, GL_RGBA);
TEX::setRepeat(false);
TEX::setSmooth(true);
p->resTex = tex;
p->gl.tex = tex;
p->gl.width = imgSurf->w;
p->gl.height = imgSurf->h;
SDL_FreeSurface(imgSurf);
SDL_FreeSurface(resImg);
}
else if ((imgSurf->h > glState.caps.maxTexSize) && !isCrop) // Too large tilesets go here
{
/* Mega surface */
p = new BitmapPrivate(this);
p->megaSurface = imgSurf;
}
else if (isCrop)
{
p = new BitmapPrivate(this);
p->cropTex = cropTex;
Vec2i resSize(cropTex.w, cropTex.h);
while (resSize.x > glState.caps.maxTexSize || resSize.y > glState.caps.maxTexSize)
{
resSize.x = resSize.x/2;
resSize.y = resSize.y/2;
}
TEX::ID tex = TEX::gen();
TEX::bind(tex);
TEX::setRepeat(false);
TEX::setSmooth(false);
if (resSize == Vec2i(cropTex.w, cropTex.h))
{
TEX::allocEmpty(cropTex.w, cropTex.h);
GLMeta::subRectImageUpload(imgSurf->w, 0, 0, 0, 0, cropTex.w, cropTex.h, imgSurf, GL_RGBA);
GLMeta::subRectImageEnd();
}
else
{
int bpp; Uint32 rm, gm, bm, am;
SDL_PixelFormatEnumToMasks(SDL_PIXELFORMAT_ABGR8888, &bpp, &rm, &gm, &bm, &am);
SDL_Surface *resImg = SDL_CreateRGBSurface(0, resSize.x, resSize.y, bpp, rm, gm, bm, am);
IntRect src(0, 0, cropTex.w, cropTex.h);
SDL_BlitScaled(imgSurf, &src, resImg, 0);
TEX::uploadImage(resSize.x, resSize.y, resImg->pixels, GL_RGBA);
SDL_FreeSurface(resImg);
Debug() << "Loading cropped image" << filename << "at resolution"
<< resSize.x << resSize.y << "down from" << cropTex.w << cropTex.h;
}
p->cropTexTex = tex;
p->gl.tex = tex;
p->gl.width = imgSurf->w;
p->gl.height = imgSurf->h;
SDL_FreeSurface(imgSurf);
}
else
{
/* Regular surface */
@ -274,6 +388,7 @@ Bitmap::Bitmap(const char *filename)
SDL_FreeSurface(imgSurf);
}
p->isCrop = isCrop;
p->addTaintedArea(rect());
}
@ -1230,6 +1345,10 @@ void Bitmap::releaseResources()
{
if (p->megaSurface)
SDL_FreeSurface(p->megaSurface);
else if (p->isCrop)
TEX::del(p->cropTexTex);
else if (p->isResized)
TEX::del(p->resTex);
else
shState->texPool().release(p->gl);