/* Assembles atlas from tileset and autotile bitmaps */
void buildAtlas()
{
updateAutotileInfo();
TileAtlas::BlitVec blits = TileAtlas::calcBlits(atlas.efTilesetH, atlas.size);
/* Clear atlas */
FBO::bind(atlas.gl.fbo, FBO::Draw);
glState.clearColor.pushSet(Vec4());
glState.scissorTest.pushSet(false);
FBO::clear();
glState.scissorTest.pop();
glState.clearColor.pop();
/* Blit autotiles */
for (size_t i = 0; i < atlas.usableATs.size(); ++i)
{
const uint8_t atInd = atlas.usableATs[i];
Bitmap *autotile = autotiles[atInd];
int blitW = std::min(autotile->width(), atAreaW);
int blitH = std::min(autotile->height(), atAreaH);
FBO::bind(autotile->getGLTypes().fbo, FBO::Read);
if (blitW <= autotileW && tiles.animated)
{
/* Static autotile */
for (int j = 0; j < 4; ++j)
FBO::blit(0, 0, autotileW*j, atInd*autotileH, blitW, blitH);
}
else
{
/* Animated autotile */
FBO::blit(0, 0, 0, atInd*autotileH, blitW, blitH);
}
}
/* Blit tileset */
if (tileset->megaSurface())
{
/* Mega surface tileset */
FBO::unbind(FBO::Draw);
TEX::bind(atlas.gl.tex);
SDL_Surface *tsSurf = tileset->megaSurface();
for (size_t i = 0; i < blits.size(); ++i)
{
const TileAtlas::Blit &blitOp = blits[i];
GLMeta::subRectImageUpload(tsSurf->w, blitOp.src.x, blitOp.src.y,
blitOp.dst.x, blitOp.dst.y, tsLaneW, blitOp.h, tsSurf, GL_RGBA);
}
GLMeta::subRectImageFinish();
}
else
{
/* Regular tileset */
FBO::bind(tileset->getGLTypes().fbo, FBO::Read);
for (size_t i = 0; i < blits.size(); ++i)
{
const TileAtlas::Blit &blitOp = blits[i];
FBO::blit(blitOp.src.x, blitOp.src.y, blitOp.dst.x, blitOp.dst.y, tsLaneW, blitOp.h);
}
}
}
/* Assembles atlas from tileset and autotile bitmaps */
void buildAtlas()
{
tileset->flush();
updateAutotileInfo();
for (size_t i = 0; i < atlas.usableATs.size(); ++i)
autotiles[atlas.usableATs[i]]->flush();
TileAtlas::BlitList blits = TileAtlas::calcBlits(atlas.efTilesetH, atlas.size);
/* Clear atlas */
FBO::bind(atlas.gl.fbo, FBO::Draw);
glState.clearColor.pushSet(Vec4());
glState.scissorTest.pushSet(false);
FBO::clear();
glState.scissorTest.pop();
glState.clearColor.pop();
/* Blit autotiles */
for (size_t i = 0; i < atlas.usableATs.size(); ++i)
{
const uint8_t atInd = atlas.usableATs[i];
Bitmap *autotile = autotiles[atInd];
int blitW = std::min(autotile->width(), atAreaW);
int blitH = std::min(autotile->height(), atAreaH);
FBO::bind(autotile->getGLTypes().fbo, FBO::Read);
FBO::blit(0, 0, 0, atInd*autotileH, blitW, blitH);
}
/* Blit tileset */
if (tileset->megaSurface())
{
/* Mega surface tileset */
FBO::unbind(FBO::Draw);
TEX::bind(atlas.gl.tex);
SDL_Surface *tsSurf = tileset->megaSurface();
for (size_t i = 0; i < blits.size(); ++i)
{
const TileAtlas::Blit &blitOp = blits[i];
PixelStore::setupSubImage(tsSurf->w, blitOp.src.x, blitOp.src.y);
TEX::uploadSubImage(blitOp.dst.x, blitOp.dst.y, tsLaneW, blitOp.h, tsSurf->pixels, GL_RGBA);
}
PixelStore::reset();
}
else
{
/* Regular tileset */
FBO::bind(tileset->getGLTypes().fbo, FBO::Read);
for (size_t i = 0; i < blits.size(); ++i)
{
const TileAtlas::Blit &blitOp = blits[i];
FBO::blit(blitOp.src.x, blitOp.src.y, blitOp.dst.x, blitOp.dst.y, tsLaneW, blitOp.h);
}
}
}
