50 fps!

image_converter.rb

@@ -9,7 +9,7 @@ require 'rmagick'
 # [ ] turn the big color counts into three bitplames worth of data
 # [ ] turn the little color counts into up to 8 sprites worth of data strips & color changes
 
-image = Magick::Image.read('topaz.png').first
+image = Magick::Image.read('topaz-narrow.png').first
 
 rows = []
 
@@ -263,7 +263,7 @@ module Amiga
   class Util
     TOTAL_HEIGHT = 256
     TOP_OFFSET = 44
-    LEFT_OFFSET = 128
+    LEFT_OFFSET = 128 + 64
 
     SPRITE_HEIGHT = TOTAL_HEIGHT + TOP_OFFSET
 

main.c

@@ -40,16 +40,6 @@ uint16_t custom_color = (uint16_t)offsetof(Custom, color);
 uint16_t custom_sprite = (uint16_t)offsetof(Custom, sprpt);
 uint16_t custom_sprite_control = (uint16_t)offsetof(Custom, spr);
 
-uint16_t spritePositionsEachLine[256][2];
-
-void calculageSpritePositionsEachLine() {
-  int i;
-
-  for (i = 0; i < 255; ++i) {
-
-  }
-}
-
 #define SPRPOS(x, y) (((y & 0xff) << 8) + ((x & 0x1fe) >> 1))
 #define SPRCTL(x, y, height) ( \
   ((height & 0xff) << 8) + \
@@ -64,6 +54,10 @@ extern uint16_t chip SpriteCopperlist[];
 extern uint16_t chip SpriteData[];
 extern uint16_t chip MaskBitplane[];
 
+#define TOPAZ_WIDTH_PIXELS (160)
+#define TOPAZ_WIDTH_BYTES (TOPAZ_WIDTH_PIXELS / 8)
+#define TOPAZ_WIDTH_WORDS (TOPAZ_WIDTH_PIXELS / 16)
+
 void renderTopaz(void) {
   int plane;
 
@@ -71,7 +65,7 @@ void renderTopaz(void) {
   uint8_t *bltbpt;
 
   bltcon0 = 0xca + (1 << 8) + (1 << 9) + (1 << 10) + (1 << 11);
-  bltcmod = screenSetup.byteWidth - 32;
+  bltcmod = screenSetup.byteWidth - TOPAZ_WIDTH_BYTES;
   bltbpt = TopazBitplanes;
 
   for (plane = 0; plane < 3; ++plane) {
@@ -81,15 +75,15 @@ void renderTopaz(void) {
     custom.bltalwm = 0xffff;
     custom.bltapt = MaskBitplane;
     custom.bltbpt = bltbpt;
-    custom.bltcpt = currentScreen.planes[plane];
-    custom.bltdpt = currentScreen.planes[plane];
+    custom.bltcpt = currentScreen.planes[plane] + 8;
+    custom.bltdpt = currentScreen.planes[plane] + 8;
     custom.bltamod = 0;
     custom.bltbmod = 0;
     custom.bltcmod = bltcmod;
     custom.bltdmod = bltcmod;
-    custom.bltsize = 16 + (256 << 6);
+    custom.bltsize = TOPAZ_WIDTH_WORDS + (256 << 6);
 
-    bltbpt += 32 * 256;
+    bltbpt += TOPAZ_WIDTH_BYTES * 256;
 
     WaitBlit();
   }
@@ -102,13 +96,6 @@ int main(void) {
 
   struct BunRenderer bunRenderer;
 
-  color_t colors[8];
-
-  colors[0] = 0x09b8;
-  colors[1] = 0x0000;
-  colors[2] = 0x0fff;
-  colors[3] = 0x000f;
-
   printf("setting up, i haven't crashed...yet.\n");
 
   setupScreen(&screenSetup, SCREEN_WIDTH, SCREEN_HEIGHT, 3);
@@ -131,7 +118,6 @@ int main(void) {
     &currentScreen,
     &copperlistBitplanePointers
   );
-  //currentCopperlist = setUpEmptySpritesInCopperlist(currentCopperlist);
 
   currentCopperColors = CopperColors;
   currentSpriteCopperlist = SpriteCopperlist;
@@ -158,6 +144,7 @@ int main(void) {
 
   for (y = 0; y < 256; ++y) {
     for (i = 0; i < 8; ++i) {
+      // set sprite color
       *(currentCopperlist++) = custom_color + 32 + (
         // sprite color group
         (i / 2) * 4 +
@@ -165,12 +152,9 @@ int main(void) {
         1 +
         i % 2
       ) * 2;
-
       *(currentCopperlist++) = *(currentSpriteCopperlist++);
-      //*(currentCopperlist++) = 0xf0f;
-
-      //currentSpriteCopperlist++;
 
+      // set sprite position
       *(currentCopperlist++) = custom_sprite_control + i * 8;
       *(currentCopperlist++) = *(currentSpriteCopperlist++);
 
@@ -185,22 +169,6 @@ int main(void) {
 
     *(currentCopperlist++) = 1 + ((31 + (256 / 4)) << 1) + ((44 + y) << 8);
     *(currentCopperlist++) = 0xFFFE;
-    /*
-    *(currentCopperlist++) = custom_color;
-    *(currentCopperlist++) = 0x9b8;
-    */
-
-    /*
-    *(currentCopperlist++) = 1 + (1 << 1) + ((44 + y) << 8);
-    *(currentCopperlist++) = 0xFFFE;
-    */
-
-    /*
-    *(currentCopperlist++) = 1 + ((31 + (320 / 4)) << 1) + ((44 + y) << 8);
-    *(currentCopperlist++) = 0xFFFE;
-    *(currentCopperlist++) = custom_color;
-    *(currentCopperlist++) = 0x000;
-  */
   }
 
   endCopperlist(currentCopperlist);
@@ -212,33 +180,10 @@ int main(void) {
 
     clearCurrentBuns(&bunRenderer);
 
-    /*
-    for (plane = 0; plane < 2; ++plane) {
-      custom.bltcon0 = 0xc0 + (1 << 8);
-      custom.bltcon1 = 0;
-      custom.bltadat = 0x0000;
-      custom.bltafwm = 0xffff;
-      custom.bltalwm = 0xffff;
-      custom.bltdpt = currentScreen.planes[plane];
-      custom.bltdmod = 0;
-      custom.bltsize = screenSetup.byteWidth / 2 + (screenSetup.height << 6);
-      WaitBlit();
-    }
-    */
-
     renderBunFrame(i, &bunRenderer);
 
     renderTopaz();
 
-    /*
-  */
-
-
-    /*
-    *(SpriteData) = SPRPOS(250, 44);
-    *(SpriteData + 1) = SPRCTL(250, 44, 44 + 257);
-    */
-
     updateDisplayInCopperList(
       &screenSetup,
       &currentScreen,
@@ -246,29 +191,17 @@ int main(void) {
     );
 
     WaitTOF();
-    
+
     if ((ciaa.ciapra >> 6) != 3) break;
 
     i++;
     i %= FRAMES_FOR_SCREEN;
   }
 
-  /*
-  for (i = 0; i < 200; ++i) {
-    WaitTOF();
-  }
-  */
-
   giveBackSystem();
 
   teardownScreen(&screenSetup);
 
-  /*
-  for (i = 0; i < 50; ++i) {
-    printf("%x %x\n", copperlist[i * 2], copperlist[i * 2 + 1]);
-  }
-*/
-
   freeCopperlist(copperlist);
 
   teardownBunRenderer();