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fixing one of the new bugs: block duplication artefact on render

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minjaesong
2018-11-20 22:16:20 +09:00
parent f5d36e2c92
commit f3b0044d5f
1 changed files with 10 additions and 5 deletions
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15
src/net/torvald/terrarum/worlddrawer/BlocksDrawerNew.kt
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@@ -440,11 +440,16 @@ internal object BlocksDrawer {
* Writes to buffer. Actual draw code must be called after this operation.
*/
private fun drawTiles(mode: Int, drawModeTilesBlendMul: Boolean) {
val for_y_start = WorldCamera.y / TILE_SIZE
val for_y_end = for_y_start + tilesBuffer.height - 1//clampHTile(for_y_start + (WorldCamera.height / TILE_SIZE) + 2)
// can't be "WorldCamera.y / TILE_SIZE":
// ( 3 / 16) == 0
// (-3 / 16) == -1 <-- We want it to be '-1', not zero
// using cast and floor instead of IF on ints: the other way causes jitter artefact, which I don't fucking know why
val for_x_start = WorldCamera.x / TILE_SIZE
val for_x_end = for_x_start + tilesBuffer.width - 1//for_x_start + (WorldCamera.width / TILE_SIZE) + 3
val for_y_start = (WorldCamera.y.toFloat() / TILE_SIZE).floorInt()
val for_y_end = for_y_start + tilesBuffer.height - 1
val for_x_start = (WorldCamera.x.toFloat() / TILE_SIZE).floorInt()
val for_x_end = for_x_start + tilesBuffer.width - 1
// loop
for (y in for_y_start..for_y_end) {
@@ -745,7 +750,7 @@ internal object BlocksDrawer {
shader.setUniformi("tilemap", 1)
shader.setUniformi("tilemapDimension", tilesBuffer.width, tilesBuffer.height)
shader.setUniformf("tilesInAxes", tilesInHorizontal.toFloat(), tilesInVertical.toFloat())
shader.setUniformi("cameraTranslation", WorldCamera.x % TILE_SIZE, WorldCamera.y % TILE_SIZE) // surprisingly, using 'fmod' instead of '%' doesn't work
shader.setUniformi("cameraTranslation", WorldCamera.x fmod TILE_SIZE, WorldCamera.y fmod TILE_SIZE) // usage of 'fmod' and '%' were depend on the for_x_start, which I can't just do naive int div
/*shader hard-code*/shader.setUniformi("tilesInAtlas", tileAtlas.horizontalCount, tileAtlas.verticalCount) //depends on the tile atlas
/*shader hard-code*/shader.setUniformi("atlasTexSize", tileAtlas.texture.width, tileAtlas.texture.height) //depends on the tile atlas
tilesQuad.render(shader, GL20.GL_TRIANGLES)