draw call bytecode compiling wip

tsvm_core/src/net/torvald/tsvm/peripheral/DrawCall.kt

@@ -27,7 +27,7 @@ internal object DrawCallEnd : DrawCall {
 
 internal class GotoScanline(val line: Int) : DrawCall {
     override fun execute(gpu: GraphicsAdapter) {
-        gpu.drawCallRscanline = line
+        gpu.rScanline = line
     }
 }
 
@@ -38,59 +38,46 @@ internal class JumpIfScanline(
     val whenGreaterThan: Int
 ) : DrawCall {
     override fun execute(gpu: GraphicsAdapter) {
-        if (gpu.drawCallRscanline < compare) {
-            if (whenLessThan != 65535) gpu.drawCallRscanline = whenLessThan - 1
+        if (gpu.rScanline < compare) {
+            if (whenLessThan != 65535) gpu.rScanline = whenLessThan - 1
         }
-        else if (gpu.drawCallRscanline == compare) {
-            if (whenEqualTo != 65535) gpu.drawCallRscanline = whenEqualTo - 1
+        else if (gpu.rScanline == compare) {
+            if (whenEqualTo != 65535) gpu.rScanline = whenEqualTo - 1
         }
         else {
-            if (whenGreaterThan != 65535) gpu.drawCallRscanline = whenGreaterThan - 1
+            if (whenGreaterThan != 65535) gpu.rScanline = whenGreaterThan - 1
         }
     }
 }
 
+/**
+ * DrawDoubleLines: simply double the `len` parameter
+ */
 internal class DrawCallDrawLines(
-    val opCount: Int, val colour: Int,
-    val xposLen1: Int,
-    val xposLen2: Int = 0,
-    val xposLen3: Int = 0,
-    val xposLen4: Int = 0,
-    val xposLen5: Int = 0,
-    val xposLen6: Int = 0,
-    val xposLen7: Int = 0,
-    val xposLen8: Int = 0
+    val opCount: Int, val colour: Int, val lenMult: Int,
+    val xposs: IntArray, val lens: IntArray
 ) : DrawCall {
     override fun execute(gpu: GraphicsAdapter) {
-        TODO("Not yet implemented")
+        val cc = colour.toByte()
+
+        for (k in 0 until opCount) {
+            for (i in xposs[k] until xposs[k] + lens[k]) gpu.framebuffer.set(gpu.rScanline * gpu.WIDTH * 1L + i, cc)
+            gpu.rScanline += Math.ceil(lens[k].toDouble() / gpu.WIDTH).toInt()
+        }
     }
 }
 
-internal class DrawCallDrawDoubleLines(
-    val opCount: Int, val colour: Int,
-    val xposLen1: Int,
-    val xposLen2: Int = 0,
-    val xposLen3: Int = 0,
-    val xposLen4: Int = 0,
-    val xposLen5: Int = 0,
-    val xposLen6: Int = 0,
-    val xposLen7: Int = 0,
-    val xposLen8: Int = 0
-) : DrawCall {
-    override fun execute(gpu: GraphicsAdapter) {
-        TODO("Not yet implemented")
-    }
-}
 
 internal class DrawCallCopyPixels(
     val opCount: Int,
+    val addrFrom: Int,
     val xPos: Int,
     val lineLength: Int,
     val stride1: Int,
-    val stride2: Int = 0,
-    val stride3: Int = 0,
-    val stride4: Int = 0,
-    val stride5: Int = 0,
+    val stride2: Int,
+    val stride3: Int,
+    val stride4: Int,
+    val stride5: Int
 ) : DrawCall {
     override fun execute(gpu: GraphicsAdapter) {
         TODO("Not yet implemented")

tsvm_core/src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt

@@ -354,7 +354,114 @@ open class GraphicsAdapter(private val assetsRoot: String, val vm: VM, val confi
     private var drawCallSize = 0
     private val drawCallBuffer = Array<DrawCall>(3640) { DrawCallEnd }
     internal var drawCallProgramCounter = 0
-    internal var drawCallRscanline = 0
+    internal var rScanline = 0
+
+    private fun compileWords() {
+        drawCallSize = 0
+        while (true) {
+            val bytes = (0..17).map { instArea.get(18L*drawCallSize + it) }.toByteArray()
+            val instruction = compileWord(bytes)
+            drawCallBuffer[drawCallSize] = instruction
+            drawCallSize += 1
+
+            // check if the instruction contains END
+            if (instruction is DrawCallCompound && (instruction.call1 is DrawCallEnd || instruction.call2 is DrawCallEnd || instruction.call3 is DrawCallEnd)) {
+                break
+            }
+        }
+    }
+
+    private fun compileWord(bytes: ByteArray): DrawCall {
+        val head = bytes[0]
+
+        when (head) {
+            in 0..127 -> {
+                // D-type
+                when (head) {
+                    in 0x10..0x17 -> {
+                        return DrawCallDrawLines(
+                            (head and 0xF).toInt() + 1,
+                            bytes[1].toUint(), 1,
+                            intArrayOf(
+                                bytes[3].toUint().and(63).unzero(64),
+                                bytes[5].toUint().and(63).unzero(64),
+                                bytes[7].toUint().and(63).unzero(64),
+                                bytes[9].toUint().and(63).unzero(64),
+                                bytes[11].toUint().and(63).unzero(64),
+                                bytes[13].toUint().and(63).unzero(64),
+                                bytes[15].toUint().and(63).unzero(64),
+                                bytes[17].toUint().and(63).unzero(64)
+                            ),
+                            intArrayOf(
+                                bytes[2].toUint().shl(2) or bytes[3].toUint().and(192).ushr(6),
+                                bytes[4].toUint().shl(2) or bytes[5].toUint().and(192).ushr(6),
+                                bytes[6].toUint().shl(2) or bytes[7].toUint().and(192).ushr(6),
+                                bytes[8].toUint().shl(2) or bytes[9].toUint().and(192).ushr(6),
+                                bytes[10].toUint().shl(2) or bytes[11].toUint().and(192).ushr(6),
+                                bytes[12].toUint().shl(2) or bytes[13].toUint().and(192).ushr(6),
+                                bytes[14].toUint().shl(2) or bytes[15].toUint().and(192).ushr(6),
+                                bytes[16].toUint().shl(2) or bytes[17].toUint().and(192).ushr(6)
+                            )
+                        )
+                    }
+                    in 0x18..0x1F -> {
+                        return DrawCallDrawLines(
+                            (head and 0xF).toInt() - 7,
+                            bytes[1].toUint(), 2,
+                            intArrayOf(
+                                bytes[3].toUint().and(63).unzero(64),
+                                bytes[5].toUint().and(63).unzero(64),
+                                bytes[7].toUint().and(63).unzero(64),
+                                bytes[9].toUint().and(63).unzero(64),
+                                bytes[11].toUint().and(63).unzero(64),
+                                bytes[13].toUint().and(63).unzero(64),
+                                bytes[15].toUint().and(63).unzero(64),
+                                bytes[17].toUint().and(63).unzero(64)
+                            ),
+                            intArrayOf(
+                                bytes[2].toUint().shl(2) or bytes[3].toUint().and(192).ushr(6),
+                                bytes[4].toUint().shl(2) or bytes[5].toUint().and(192).ushr(6),
+                                bytes[6].toUint().shl(2) or bytes[7].toUint().and(192).ushr(6),
+                                bytes[8].toUint().shl(2) or bytes[9].toUint().and(192).ushr(6),
+                                bytes[10].toUint().shl(2) or bytes[11].toUint().and(192).ushr(6),
+                                bytes[12].toUint().shl(2) or bytes[13].toUint().and(192).ushr(6),
+                                bytes[14].toUint().shl(2) or bytes[15].toUint().and(192).ushr(6),
+                                bytes[16].toUint().shl(2) or bytes[17].toUint().and(192).ushr(6)
+                            )
+                        )
+                    }
+                    in 0x20..0x25 -> {
+                        return DrawCallCopyPixels(
+                            (head and 0xF).toInt() + 1,
+                            bytes[1].toUint().shl(16) or bytes[2].toUint().shl(8) or bytes[3].toUint(),
+                            bytes[4].toUint().shl(8) or bytes[5].toUint(),
+                            bytes[6].toUint().shl(8) or bytes[7].toUint(),
+                            bytes[8].toUint().shl(8) or bytes[9].toUint(),
+                            bytes[10].toUint().shl(8) or bytes[11].toUint(),
+                            bytes[12].toUint().shl(8) or bytes[13].toUint(),
+                            bytes[14].toUint().shl(8) or bytes[15].toUint(),
+                            bytes[16].toUint().shl(8) or bytes[17].toUint()
+                        )
+                    }
+                    else -> throw UnsupportedOperationException("Unknown Head byte 0x${head.toString(16).padStart(2,'0').toUpperCase()}")
+                }
+            }
+            in -16..-1 -> {
+                // C-type
+                when (head) {
+                    else -> throw UnsupportedOperationException("Unknown Head byte 0x${head.toString(16).padStart(2,'0').toUpperCase()}")
+                }
+            }
+            else -> {
+                // T-type
+                when (head) {
+                    else -> throw UnsupportedOperationException("Unknown Head byte 0x${head.toString(16).padStart(2,'0').toUpperCase()}")
+                }
+            }
+        }
+    }
+
+    private fun Int.unzero(n: Int) = if (this == 0) n else this
 
     /**
      * @param mode 0-Low, 1-High