2024-04-30 02:12:48 +00:00
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#include <stdio.h>
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#include <clib/exec_protos.h>
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#include <clib/graphics_protos.h>
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#include <exec/exec.h>
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#include <hardware/custom.h>
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#include <hardware/dmabits.h>
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2024-06-11 02:04:40 +00:00
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#include <hardware/cia.h>
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2024-04-30 02:12:48 +00:00
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2024-05-27 18:58:13 +00:00
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#include <graphics/gfx.h>
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2024-05-27 20:50:56 +00:00
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#include "system/blitter.h"
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#include "system/copper.h"
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#include "system/system.h"
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2024-05-02 16:52:06 +00:00
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#include "screen.h"
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#include "types.h"
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2024-05-28 12:02:28 +00:00
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#include "bun.h"
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2024-04-30 02:12:48 +00:00
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2024-05-02 16:52:06 +00:00
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extern struct Custom far custom;
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2024-06-11 02:04:40 +00:00
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extern struct CIA far ciaa;
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2024-05-27 18:58:13 +00:00
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2024-09-12 12:26:53 +00:00
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// change to 0 to not render sprites
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#define RENDER_SPRITES (1)
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2024-05-27 18:58:13 +00:00
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volatile short *dbg = (volatile short *)0x100;
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2024-09-19 11:47:48 +00:00
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struct ScreenDefinition screenDefinition;
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struct ActiveScreenBufferDetails activeScreenBufferDetails;
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2024-09-19 12:09:10 +00:00
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/**
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* The locations within the copperlist data where the bitplanes are referenced.
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* We change these areas of memory directly to implement double buffering.
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* Addresses are to the high, then low, word of the plane memory address in the copperlist.
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*
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* @see addDisplayToCopperlist
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*/
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2024-06-01 11:42:11 +00:00
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void *copperlistBitplanePointers[8][2];
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2024-05-27 18:58:13 +00:00
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2024-05-28 12:02:28 +00:00
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#define offsetof(s, m) &((struct s *)0)->m
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uint16_t custom_color = (uint16_t)offsetof(Custom, color);
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2024-06-01 11:42:11 +00:00
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uint16_t custom_sprite = (uint16_t)offsetof(Custom, sprpt);
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2024-06-02 20:03:16 +00:00
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uint16_t custom_sprite_control = (uint16_t)offsetof(Custom, spr);
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#define SPRPOS(x, y) (((y & 0xff) << 8) + ((x & 0x1fe) >> 1))
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#define SPRCTL(x, y, height) ( \
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((height & 0xff) << 8) + \
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((y & 0x100) >> 6) + \
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((height & 0x100) >> 7) + \
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(x & 1) \
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)
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2024-05-27 18:58:13 +00:00
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2024-06-11 02:04:40 +00:00
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extern uint8_t chip TopazBitplanes[];
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extern uint16_t chip CopperColors[];
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extern uint16_t chip SpriteCopperlist[];
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extern uint16_t chip SpriteData[];
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2024-07-17 11:08:59 +00:00
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extern uint8_t chip MaskBitplane[];
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2024-06-11 02:04:40 +00:00
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2024-06-13 16:30:39 +00:00
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#define TOPAZ_WIDTH_PIXELS (160)
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#define TOPAZ_WIDTH_BYTES (TOPAZ_WIDTH_PIXELS / 8)
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#define TOPAZ_WIDTH_WORDS (TOPAZ_WIDTH_PIXELS / 16)
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2024-06-13 13:01:22 +00:00
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void renderTopaz(void) {
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int plane;
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uint16_t bltcon0, bltcmod;
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uint8_t *bltbpt;
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bltcon0 = 0xca + (1 << 8) + (1 << 9) + (1 << 10) + (1 << 11);
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2024-09-19 11:47:48 +00:00
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bltcmod = screenDefinition.byteWidth - TOPAZ_WIDTH_BYTES;
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2024-06-13 13:01:22 +00:00
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bltbpt = TopazBitplanes;
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for (plane = 0; plane < 3; ++plane) {
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custom.bltcon0 = bltcon0;
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custom.bltcon1 = 0;
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custom.bltafwm = 0xffff;
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custom.bltalwm = 0xffff;
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custom.bltapt = MaskBitplane;
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custom.bltbpt = bltbpt;
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2024-09-19 11:47:48 +00:00
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custom.bltcpt = activeScreenBufferDetails.planes[plane] + 8;
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custom.bltdpt = activeScreenBufferDetails.planes[plane] + 8;
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2024-06-13 13:01:22 +00:00
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custom.bltamod = 0;
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custom.bltbmod = 0;
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custom.bltcmod = bltcmod;
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custom.bltdmod = bltcmod;
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2024-06-13 16:30:39 +00:00
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custom.bltsize = TOPAZ_WIDTH_WORDS + (256 << 6);
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2024-06-13 13:01:22 +00:00
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2024-06-13 16:30:39 +00:00
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bltbpt += TOPAZ_WIDTH_BYTES * 256;
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2024-06-13 13:01:22 +00:00
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WaitBlit();
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}
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}
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2024-04-30 02:12:48 +00:00
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int main(void) {
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2024-06-11 02:04:40 +00:00
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uint16_t *copperlist, *currentCopperlist, *currentCopperColors, result, *currentSpriteCopperlist;
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uint32_t spriteDataPointer;
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2024-06-02 20:03:16 +00:00
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int i, x, y, height, plane;
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2024-05-27 18:58:13 +00:00
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2024-06-02 18:37:37 +00:00
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struct BunRenderer bunRenderer;
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2024-06-14 13:16:01 +00:00
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printf("\nCool bun blitter, copper, and sprite demo by John Bintz\n");
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printf("\n");
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printf("This is my first real go at writing graphics code for the Amiga.\n");
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printf("It's a combination of C (SAS/C) and Assembler (DevPac), with a Ruby\n");
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printf("script to do some image processing. The screen only uses three\n");
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printf("bitplanes -- one color is the background, two colors are the flying\n");
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printf("cool bun logo white and black, and the remaining 5 colors are used\n");
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printf("by the Topaz smiling art. The Ruby script will process the PNG file\n");
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printf("and figure out the best 5 colors (plus b&w) for that line of the\n");
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printf("image, setting the colors via copperlist for that line.\n");
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printf("It also builds the clipping mask for the blitter.\n\n");
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printf("And, I'm also using sprites to add more colors to the Topaz art.\n");
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printf("The Ruby script will figure out what small areas of each line weren't\n");
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printf("covered by the bitplane colors and use the 8 available sprites,\n");
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printf("changing the colors on each line via copper, to fill in the gaps.\n");
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printf("Cool buns are animated via blitter rather than sprites, but I\n");
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printf("managed to get it to run at a decent speed regardless.\n");
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printf("\nEnjoy, and thanks for watching!\n");
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printf("John (theindustriousrabbit.com)\n\n");
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2024-06-02 18:37:37 +00:00
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2024-09-19 11:47:48 +00:00
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allocateDoubleBufferedScreenMemory(
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&screenDefinition,
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&activeScreenBufferDetails,
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SCREEN_WIDTH,
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SCREEN_HEIGHT,
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3
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);
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2024-04-30 02:12:48 +00:00
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2024-09-19 11:47:48 +00:00
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setupBunRenderer(
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&bunRenderer,
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&screenDefinition,
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&activeScreenBufferDetails
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);
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2024-06-02 18:37:37 +00:00
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2024-04-30 02:12:48 +00:00
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// blitter copy the first bitplane row down to the second
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2024-09-19 12:09:10 +00:00
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copperlist = prepareNewCopperlist(10000);
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2024-04-30 02:12:48 +00:00
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2024-06-01 11:42:11 +00:00
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currentCopperlist = addDisplayToCopperlist(
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copperlist,
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2024-09-19 11:47:48 +00:00
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&screenDefinition,
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&activeScreenBufferDetails,
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2024-06-01 11:42:11 +00:00
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&copperlistBitplanePointers
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);
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2024-06-11 02:04:40 +00:00
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currentCopperColors = CopperColors;
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currentSpriteCopperlist = SpriteCopperlist;
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2024-05-28 12:02:28 +00:00
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*(currentCopperlist++) = custom_color + 2;
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*(currentCopperlist++) = 0x000;
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*(currentCopperlist++) = custom_color + 4;
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*(currentCopperlist++) = 0xfff;
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2024-09-12 12:26:53 +00:00
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if (RENDER_SPRITES) {
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for (i = 0; i < 8; ++i) {
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spriteDataPointer = (uint32_t)&SpriteData;
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spriteDataPointer += ((256 + 2) * 4) * i;
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2024-06-02 20:03:16 +00:00
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2024-09-12 12:26:53 +00:00
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*(currentCopperlist++) = custom_sprite + i * 4;
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*(currentCopperlist++) = (spriteDataPointer >> 16);
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2024-06-02 20:03:16 +00:00
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2024-09-12 12:26:53 +00:00
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*(currentCopperlist++) = custom_sprite + 2 + i * 4;
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*(currentCopperlist++) = (spriteDataPointer & 0xffff);
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}
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} else {
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printf("Skipping render\n");
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currentCopperlist = setUpEmptySpritesInCopperlist(currentCopperlist);
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2024-06-11 02:04:40 +00:00
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}
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2024-06-02 20:03:16 +00:00
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2024-06-11 02:04:40 +00:00
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*(currentCopperlist++) = custom_color;
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*(currentCopperlist++) = 0x3a6;
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2024-06-02 20:03:16 +00:00
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2024-05-28 12:02:28 +00:00
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for (y = 0; y < 256; ++y) {
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2024-09-12 12:26:53 +00:00
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if (RENDER_SPRITES) {
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for (i = 0; i < 8; ++i) {
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// set sprite color
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*(currentCopperlist++) = custom_color + 32 + (
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// sprite color group
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(i / 2) * 4 +
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// 0 is transparent
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1 +
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i % 2
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) * 2;
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*(currentCopperlist++) = *(currentSpriteCopperlist++);
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// set sprite position
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*(currentCopperlist++) = custom_sprite_control + i * 8;
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*(currentCopperlist++) = *(currentSpriteCopperlist++);
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*(currentCopperlist++) = custom_sprite_control + i * 8 + 2;
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*(currentCopperlist++) = *(currentSpriteCopperlist++);
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}
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} else {
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printf("Skipping render\n");
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2024-06-11 02:04:40 +00:00
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}
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2024-06-03 16:46:32 +00:00
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2024-06-11 02:04:40 +00:00
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for (i = 3; i < 8; ++i) {
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*(currentCopperlist++) = custom_color + (i * 2);
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*(currentCopperlist++) = *(currentCopperColors++);
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2024-06-03 16:46:32 +00:00
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}
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2024-06-02 20:03:16 +00:00
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2024-06-11 02:04:40 +00:00
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*(currentCopperlist++) = 1 + ((31 + (256 / 4)) << 1) + ((44 + y) << 8);
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2024-05-28 12:02:28 +00:00
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*(currentCopperlist++) = 0xFFFE;
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}
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2024-05-02 16:52:06 +00:00
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endCopperlist(currentCopperlist);
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2024-09-12 12:26:53 +00:00
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/*
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copperlist debugging
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for (i = 0; i < 20; ++i) {
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printf(
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"%x %x %x %x\n",
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*(copperlist + (i * 4)),
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*(copperlist + (i * 4) + 1),
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*(copperlist + (i * 4) + 2),
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*(copperlist + (i * 4) + 3)
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);
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}
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*/
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2024-06-14 13:16:01 +00:00
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takeOverSystem();
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setCopperlist(copperlist);
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2024-09-19 11:47:48 +00:00
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setUpDisplay((uint32_t)screenDefinition.bitplanes);
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2024-06-14 13:16:01 +00:00
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2024-06-11 02:04:40 +00:00
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i = 0;
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while (1) {
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2024-09-19 11:47:48 +00:00
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swapCurrentScreenBuffer(&screenDefinition, &activeScreenBufferDetails);
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2024-05-28 12:02:28 +00:00
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2024-06-13 09:55:29 +00:00
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clearCurrentBuns(&bunRenderer);
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2024-06-11 02:04:40 +00:00
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renderBunFrame(i, &bunRenderer);
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2024-06-13 13:01:22 +00:00
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renderTopaz();
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2024-06-01 11:42:11 +00:00
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updateDisplayInCopperList(
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2024-09-19 11:47:48 +00:00
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&screenDefinition,
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&activeScreenBufferDetails,
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2024-06-01 11:42:11 +00:00
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copperlistBitplanePointers
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);
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2024-06-11 02:04:40 +00:00
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2024-06-14 13:16:01 +00:00
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WaitBOF(250);
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2024-06-13 16:30:39 +00:00
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2024-06-11 02:04:40 +00:00
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if ((ciaa.ciapra >> 6) != 3) break;
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2024-09-19 11:47:48 +00:00
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//i++;
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2024-06-11 02:04:40 +00:00
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i %= FRAMES_FOR_SCREEN;
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2024-05-28 12:02:28 +00:00
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}
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2024-05-27 18:58:13 +00:00
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2024-05-02 16:52:06 +00:00
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giveBackSystem();
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2024-04-30 02:12:48 +00:00
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2024-09-19 11:47:48 +00:00
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teardownScreen(&screenDefinition);
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2024-06-11 02:04:40 +00:00
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2024-05-02 16:52:06 +00:00
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freeCopperlist(copperlist);
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2024-04-30 02:12:48 +00:00
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2024-06-02 18:42:36 +00:00
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teardownBunRenderer();
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2024-06-01 12:19:10 +00:00
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2024-04-30 02:12:48 +00:00
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return 0;
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}
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