//
-// VIDEO.CPP: SDL/local hardware specific video routines
+// Apple 2 video support
+//
+// All the video modes that a real Apple 2 supports are handled here
//
// by James Hammons
+// (c) 2005-2018 Underground Software
//
// JLH = James Hammons <jlhamm@acm.org>
//
// WHO WHEN WHAT
-// --- ---------- ------------------------------------------------------------
-// JLH 01/04/2006 Added changelog ;-)
-// JLH 01/20/2006 Cut out unnecessary buffering
+// --- ---------- -----------------------------------------------------------
+// JLH 12/01/2005 Added color TV/monochrome emulation to hi-res code
+// JLH 12/09/2005 Cleaned up color TV emulation code
+// JLH 12/09/2005 Fixed lo-res color TV/mono emulation modes
+//
+// STILL TO DO:
+//
+// - Fix LoRes mode green mono to skip every other scanline instead of fill
+// like white mono does [DONE]
+// - Double HiRes [DONE]
+// - 80 column text [DONE]
+// - Fix OSD text display so that it's visible no matter what background is
+// there [DONE]
//
#include "video.h"
-#include <SDL2/SDL.h>
-#include <string.h> // Why??? (for memset, etc... Lazy!) Dunno why, but this just strikes me as wrong...
-#include <malloc.h>
+
+#include <string.h> // for memset()
+#include <stdio.h>
+#include <stdarg.h> // for va_* stuff
+#include "apple2.h"
+#include "apple2-icon-64x64.h"
+#include "charset.h"
#include "log.h"
#include "settings.h"
+#include "gui/font14pt.h"
+#include "gui/gui.h"
+
+/* Reference: Technote tn-iigs-063 "Master Color Values"
+
+ Color Color Register LR HR DHR Master Color R,G,B
+ Name Value # # # Value
+ ----------------------------------------------------
+ Black 0 0 0,4 0 $0000 (0,0,0)
+(Magenta) Deep Red 1 1 1 $0D03 (D,0,3)
+ Dark Blue 2 2 8 $0009 (0,0,9)
+ (Violet) Purple 3 3 2 9 $0D2D (D,2,D)
+ Dark Green 4 4 4 $0072 (0,7,2)
+ (Gray 1) Dark Gray 5 5 5 $0555 (5,5,5)
+ (Blue) Medium Blue 6 6 6 C $022F (2,2,F)
+ (Cyan) Light Blue 7 7 D $06AF (6,A,F)
+ Brown 8 8 2 $0850 (8,5,0)
+ Orange 9 9 5 3 $0F60 (F,6,0)
+ (Gray 2) Light Gray A A A $0AAA (A,A,A)
+ Pink B B B $0F98 (F,9,8)
+ (Green) Light Green C C 1 6 $01D0 (1,D,0)
+ Yellow D D 7 $0FF0 (F,F,0)
+ (Aqua) Aquamarine E E E $04F9 (4,F,9)
+ White F F 3,7 F $0FFF (F,F,F)
+
+ LR: Lo-Res HR: Hi-Res DHR: Double Hi-Res
+
+ N.B.: These colors look like shit */
+
+// Global variables
+bool flash = false;
+bool textMode = true;
+bool mixedMode = false;
+bool displayPage2 = false;
+bool hiRes = false;
+bool alternateCharset = false;
+bool col80Mode = false;
+SDL_Renderer * sdlRenderer = NULL;
+SDL_Window * sdlWindow = NULL;
-// Exported global variables (actually, these are LOCAL global variables, EXPORTED...)
+// Local variables
-static SDL_Window * sdlWindow = NULL;
-static SDL_Renderer * sdlRenderer = NULL;
static SDL_Texture * sdlTexture = NULL;
-uint32_t scrBuffer[VIRTUAL_SCREEN_WIDTH * VIRTUAL_SCREEN_HEIGHT * sizeof(uint32_t)];
+static uint32_t * scrBuffer;
+static int scrPitch;
+static bool showFrameTicks = false;
+
+// We set up the colors this way so that they'll be endian safe
+// when we cast them to a uint32_t. Note that the format is RGBA.
+
+// "Master Color Values" palette (ugly, Apple engineer hand-picked colors)
+
+static uint8_t colors[16 * 4] = {
+ 0x00, 0x00, 0x00, 0xFF, // Black
+ 0xDD, 0x00, 0x33, 0xFF, // Deep Red (Magenta)
+ 0x00, 0x00, 0x99, 0xFF, // Dark Blue
+ 0xDD, 0x22, 0xDD, 0xFF, // Purple (Violet)
+ 0x00, 0x77, 0x22, 0xFF, // Dark Green
+ 0x55, 0x55, 0x55, 0xFF, // Dark Gray (Gray 1)
+ 0x22, 0x22, 0xFF, 0xFF, // Medium Blue (Blue)
+ 0x66, 0xAA, 0xFF, 0xFF, // Light Blue (Cyan)
+ 0x88, 0x55, 0x00, 0xFF, // Brown
+ 0xFF, 0x66, 0x00, 0xFF, // Orange
+ 0xAA, 0xAA, 0xAA, 0xFF, // Light Gray (Gray 2)
+ 0xFF, 0x99, 0x88, 0xFF, // Pink
+ 0x11, 0xDD, 0x00, 0xFF, // Light Green (Green)
+ 0xFF, 0xFF, 0x00, 0xFF, // Yellow
+ 0x44, 0xFF, 0x99, 0xFF, // Aquamarine (Aqua)
+ 0xFF, 0xFF, 0xFF, 0xFF // White
+};
+
+// This palette comes from ApplePC's colors (more realistic to my eye ;-)
+
+static uint8_t altColors[16 * 4] = {
+ 0x00, 0x00, 0x00, 0xFF,
+ 0x7D, 0x20, 0x41, 0xFF,
+ 0x41, 0x30, 0x7D, 0xFF,
+ 0xBE, 0x51, 0xBE, 0xFF,
+ 0x00, 0x5D, 0x3C, 0xFF,
+ 0x7D, 0x7D, 0x7D, 0xFF,
+ 0x41, 0x8E, 0xBA, 0xFF,
+ 0xBE, 0xAE, 0xFB, 0xFF,
+ 0x3C, 0x4D, 0x00, 0xFF,
+ 0xBA, 0x6D, 0x41, 0xFF,
+ 0x7D, 0x7D, 0x7D, 0xFF,
+ 0xFB, 0x9E, 0xBE, 0xFF,
+ 0x3C, 0xAA, 0x3C, 0xFF,
+ 0xBA, 0xCB, 0x7D, 0xFF,
+ 0x7D, 0xDB, 0xBA, 0xFF,
+ 0xFB, 0xFB, 0xFB, 0xFF };
+
+// This color palette comes from xapple2 (looks a bit shit to me :-)
+// I've included it to have yet another point of comparison to the execrable
+// "Master Color Values" palette.
+/*
+ * https://mrob.com/pub/xapple2/colors.html
+ * detailed research into accurate colors
+ --chroma--
+ Color name phase ampl luma -R- -G- -B-
+ black COLOR=0 0 0 0 0 0 0
+ gray COLOR=5 0 0 50 156 156 156
+ grey COLOR=10 0 0 50 156 156 156
+ white COLOR=15 0 0 100 255 255 255
+ dk blue COLOR=2 0 60 25 96 78 189
+ lt blue COLOR=7 0 60 75 208 195 255
+ purple COLOR=3 45 100 50 255 68 253
+ purple HCOLOR=2 45 100 50 255 68 253
+ red COLOR=1 90 60 25 227 30 96
+ pink COLOR=11 90 60 75 255 160 208
+ orange COLOR=9 135 100 50 255 106 60
+ orange HCOLOR=5 135 100 50 255 106 60
+ brown COLOR=8 180 60 25 96 114 3
+ yellow COLOR=13 180 60 75 208 221 141
+ lt green COLOR=12 225 100 50 20 245 60
+ green HCOLOR=1 225 100 50 20 245 60
+ dk green COLOR=4 270 60 25 0 163 96
+ aqua COLOR=14 270 60 75 114 255 208
+ med blue COLOR=6 315 100 50 20 207 253
+ blue HCOLOR=6 315 100 50 20 207 253
+ NTSC Hsync 0 0 -40 0 0 0
+ NTSC black 0 0 7.5 41 41 41
+ NTSC Gray75 0 0 77 212 212 212
+ YIQ +Q 33 100 50 255 81 255
+ NTSC magenta 61 82 36 255 40 181
+ NTSC red 104 88 28 255 28 76
+ YIQ +I 123 100 50 255 89 82
+ NTSC yellow 167 62 69 221 198 121
+ Color burst 180 40 0 0 4 0
+ YIQ -Q 213 100 50 51 232 41
+ NTSC green 241 82 48 12 234 97
+ NTSC cyan 284 88 56 10 245 198
+ YIQ -I 303 100 50 0 224 231
+ NTSC blue 347 62 15 38 65 155
+*/
+
+static uint8_t robColors[16 * 4] = {
+ 0x00, 0x00, 0x00, 0xFF, // Black
+ 0xE3, 0x1E, 0x60, 0xFF, // Deep Red (Magenta) 227 30 96
+ 0x60, 0x4E, 0xBD, 0xFF, // Dark Blue 96 78 189
+ 0xFF, 0x44, 0xFD, 0xFF, // Purple (Violet) 255 68 253
+ 0x00, 0xA3, 0x60, 0xFF, // Dark Green 0 163 96
+ 0x9C, 0x9C, 0x9C, 0xFF, // Dark Gray (Gray 1) 156 156 156
+ 0x14, 0xCF, 0xFD, 0xFF, // Medium Blue (Blue) 20 207 253
+ 0xD0, 0xC3, 0xFF, 0xFF, // Light Blue (Cyan) 208 195 255
+ 0x60, 0x72, 0x03, 0xFF, // Brown 96 114 3
+ 0xFF, 0x6A, 0x3C, 0xFF, // Orange 255 106 60
+ 0xD4, 0xD4, 0xD4, 0xFF, // Light Gray (Gray 2) 212 212 212
+ 0xFF, 0xA0, 0xD0, 0xFF, // Pink 255 160 208
+ 0x14, 0xF5, 0x3C, 0xFF, // Light Green (Green) 20 245 60
+ 0xD0, 0xDD, 0x8D, 0xFF, // Yellow 208 221 141
+ 0x72, 0xFF, 0xD0, 0xFF, // Aquamarine (Aqua) 114 255 208
+ 0xFF, 0xFF, 0xFF, 0xFF // White
+};
+
+// Lo-res starting line addresses
+
+static uint16_t lineAddrLoRes[24] = {
+ 0x0400, 0x0480, 0x0500, 0x0580, 0x0600, 0x0680, 0x0700, 0x0780,
+ 0x0428, 0x04A8, 0x0528, 0x05A8, 0x0628, 0x06A8, 0x0728, 0x07A8,
+ 0x0450, 0x04D0, 0x0550, 0x05D0, 0x0650, 0x06D0, 0x0750, 0x07D0 };
+
+// Hi-res starting line addresses
+
+static uint16_t lineAddrHiRes[192] = {
+ 0x2000, 0x2400, 0x2800, 0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00,
+ 0x2080, 0x2480, 0x2880, 0x2C80, 0x3080, 0x3480, 0x3880, 0x3C80,
+ 0x2100, 0x2500, 0x2900, 0x2D00, 0x3100, 0x3500, 0x3900, 0x3D00,
+ 0x2180, 0x2580, 0x2980, 0x2D80, 0x3180, 0x3580, 0x3980, 0x3D80,
+
+ 0x2200, 0x2600, 0x2A00, 0x2E00, 0x3200, 0x3600, 0x3A00, 0x3E00,
+ 0x2280, 0x2680, 0x2A80, 0x2E80, 0x3280, 0x3680, 0x3A80, 0x3E80,
+ 0x2300, 0x2700, 0x2B00, 0x2F00, 0x3300, 0x3700, 0x3B00, 0x3F00,
+ 0x2380, 0x2780, 0x2B80, 0x2F80, 0x3380, 0x3780, 0x3B80, 0x3F80,
+
+ 0x2028, 0x2428, 0x2828, 0x2C28, 0x3028, 0x3428, 0x3828, 0x3C28,
+ 0x20A8, 0x24A8, 0x28A8, 0x2CA8, 0x30A8, 0x34A8, 0x38A8, 0x3CA8,
+ 0x2128, 0x2528, 0x2928, 0x2D28, 0x3128, 0x3528, 0x3928, 0x3D28,
+ 0x21A8, 0x25A8, 0x29A8, 0x2DA8, 0x31A8, 0x35A8, 0x39A8, 0x3DA8,
+
+ 0x2228, 0x2628, 0x2A28, 0x2E28, 0x3228, 0x3628, 0x3A28, 0x3E28,
+ 0x22A8, 0x26A8, 0x2AA8, 0x2EA8, 0x32A8, 0x36A8, 0x3AA8, 0x3EA8,
+ 0x2328, 0x2728, 0x2B28, 0x2F28, 0x3328, 0x3728, 0x3B28, 0x3F28,
+ 0x23A8, 0x27A8, 0x2BA8, 0x2FA8, 0x33A8, 0x37A8, 0x3BA8, 0x3FA8,
+
+ 0x2050, 0x2450, 0x2850, 0x2C50, 0x3050, 0x3450, 0x3850, 0x3C50,
+ 0x20D0, 0x24D0, 0x28D0, 0x2CD0, 0x30D0, 0x34D0, 0x38D0, 0x3CD0,
+ 0x2150, 0x2550, 0x2950, 0x2D50, 0x3150, 0x3550, 0x3950, 0x3D50,
+ 0x21D0, 0x25D0, 0x29D0, 0x2DD0, 0x31D0, 0x35D0, 0x39D0, 0x3DD0,
+
+ 0x2250, 0x2650, 0x2A50, 0x2E50, 0x3250, 0x3650, 0x3A50, 0x3E50,
+ 0x22D0, 0x26D0, 0x2AD0, 0x2ED0, 0x32D0, 0x36D0, 0x3AD0, 0x3ED0,
+ 0x2350, 0x2750, 0x2B50, 0x2F50, 0x3350, 0x3750, 0x3B50, 0x3F50,
+ 0x23D0, 0x27D0, 0x2BD0, 0x2FD0, 0x33D0, 0x37D0, 0x3BD0, 0x3FD0 };
+
+uint16_t appleHiresToMono[0x200] = {
+ 0x0000, 0x3000, 0x0C00, 0x3C00, 0x0300, 0x3300, 0x0F00, 0x3F00,
+ 0x00C0, 0x30C0, 0x0CC0, 0x3CC0, 0x03C0, 0x33C0, 0x0FC0, 0x3FC0, // $0x
+ 0x0030, 0x3030, 0x0C30, 0x3C30, 0x0330, 0x3330, 0x0F30, 0x3F30,
+ 0x00F0, 0x30F0, 0x0CF0, 0x3CF0, 0x03F0, 0x33F0, 0x0FF0, 0x3FF0, // $1x
+ 0x000C, 0x300C, 0x0C0C, 0x3C0C, 0x030C, 0x330C, 0x0F0C, 0x3F0C,
+ 0x00CC, 0x30CC, 0x0CCC, 0x3CCC, 0x03CC, 0x33CC, 0x0FCC, 0x3FCC, // $2x
+ 0x003C, 0x303C, 0x0C3C, 0x3C3C, 0x033C, 0x333C, 0x0F3C, 0x3F3C,
+ 0x00FC, 0x30FC, 0x0CFC, 0x3CFC, 0x03FC, 0x33FC, 0x0FFC, 0x3FFC, // $3x
+ 0x0003, 0x3003, 0x0C03, 0x3C03, 0x0303, 0x3303, 0x0F03, 0x3F03,
+ 0x00C3, 0x30C3, 0x0CC3, 0x3CC3, 0x03C3, 0x33C3, 0x0FC3, 0x3FC3, // $4x
+ 0x0033, 0x3033, 0x0C33, 0x3C33, 0x0333, 0x3333, 0x0F33, 0x3F33,
+ 0x00F3, 0x30F3, 0x0CF3, 0x3CF3, 0x03F3, 0x33F3, 0x0FF3, 0x3FF3, // $5x
+ 0x000F, 0x300F, 0x0C0F, 0x3C0F, 0x030F, 0x330F, 0x0F0F, 0x3F0F,
+ 0x00CF, 0x30CF, 0x0CCF, 0x3CCF, 0x03CF, 0x33CF, 0x0FCF, 0x3FCF, // $6x
+ 0x003F, 0x303F, 0x0C3F, 0x3C3F, 0x033F, 0x333F, 0x0F3F, 0x3F3F,
+ 0x00FF, 0x30FF, 0x0CFF, 0x3CFF, 0x03FF, 0x33FF, 0x0FFF, 0x3FFF, // $7x
+ 0x0000, 0x1800, 0x0600, 0x1E00, 0x0180, 0x1980, 0x0780, 0x1F80,
+ 0x0060, 0x1860, 0x0660, 0x1E60, 0x01E0, 0x19E0, 0x07E0, 0x1FE0, // $8x
+ 0x0018, 0x1818, 0x0618, 0x1E18, 0x0198, 0x1998, 0x0798, 0x1F98,
+ 0x0078, 0x1878, 0x0678, 0x1E78, 0x01F8, 0x19F8, 0x07F8, 0x1FF8, // $9x
+ 0x0006, 0x1806, 0x0606, 0x1E06, 0x0186, 0x1986, 0x0786, 0x1F86,
+ 0x0066, 0x1866, 0x0666, 0x1E66, 0x01E6, 0x19E6, 0x07E6, 0x1FE6, // $Ax
+ 0x001E, 0x181E, 0x061E, 0x1E1E, 0x019E, 0x199E, 0x079E, 0x1F9E,
+ 0x007E, 0x187E, 0x067E, 0x1E7E, 0x01FE, 0x19FE, 0x07FE, 0x1FFE, // $Bx
+ 0x0001, 0x1801, 0x0601, 0x1E01, 0x0181, 0x1981, 0x0781, 0x1F81,
+ 0x0061, 0x1861, 0x0661, 0x1E61, 0x01E1, 0x19E1, 0x07E1, 0x1FE1, // $Cx
+ 0x0019, 0x1819, 0x0619, 0x1E19, 0x0199, 0x1999, 0x0799, 0x1F99,
+ 0x0079, 0x1879, 0x0679, 0x1E79, 0x01F9, 0x19F9, 0x07F9, 0x1FF9, // $Dx
+ 0x0007, 0x1807, 0x0607, 0x1E07, 0x0187, 0x1987, 0x0787, 0x1F87,
+ 0x0067, 0x1867, 0x0667, 0x1E67, 0x01E7, 0x19E7, 0x07E7, 0x1FE7, // $Ex
+ 0x001F, 0x181F, 0x061F, 0x1E1F, 0x019F, 0x199F, 0x079F, 0x1F9F,
+ 0x007F, 0x187F, 0x067F, 0x1E7F, 0x01FF, 0x19FF, 0x07FF, 0x1FFF, // $Fx
+
+ // Second half adds in the previous byte's lo pixel
+
+ 0x0000, 0x3000, 0x0C00, 0x3C00, 0x0300, 0x3300, 0x0F00, 0x3F00,
+ 0x00C0, 0x30C0, 0x0CC0, 0x3CC0, 0x03C0, 0x33C0, 0x0FC0, 0x3FC0, // $0x
+ 0x0030, 0x3030, 0x0C30, 0x3C30, 0x0330, 0x3330, 0x0F30, 0x3F30,
+ 0x00F0, 0x30F0, 0x0CF0, 0x3CF0, 0x03F0, 0x33F0, 0x0FF0, 0x3FF0, // $1x
+ 0x000C, 0x300C, 0x0C0C, 0x3C0C, 0x030C, 0x330C, 0x0F0C, 0x3F0C,
+ 0x00CC, 0x30CC, 0x0CCC, 0x3CCC, 0x03CC, 0x33CC, 0x0FCC, 0x3FCC, // $2x
+ 0x003C, 0x303C, 0x0C3C, 0x3C3C, 0x033C, 0x333C, 0x0F3C, 0x3F3C,
+ 0x00FC, 0x30FC, 0x0CFC, 0x3CFC, 0x03FC, 0x33FC, 0x0FFC, 0x3FFC, // $3x
+ 0x0003, 0x3003, 0x0C03, 0x3C03, 0x0303, 0x3303, 0x0F03, 0x3F03,
+ 0x00C3, 0x30C3, 0x0CC3, 0x3CC3, 0x03C3, 0x33C3, 0x0FC3, 0x3FC3, // $4x
+ 0x0033, 0x3033, 0x0C33, 0x3C33, 0x0333, 0x3333, 0x0F33, 0x3F33,
+ 0x00F3, 0x30F3, 0x0CF3, 0x3CF3, 0x03F3, 0x33F3, 0x0FF3, 0x3FF3, // $5x
+ 0x000F, 0x300F, 0x0C0F, 0x3C0F, 0x030F, 0x330F, 0x0F0F, 0x3F0F,
+ 0x00CF, 0x30CF, 0x0CCF, 0x3CCF, 0x03CF, 0x33CF, 0x0FCF, 0x3FCF, // $6x
+ 0x003F, 0x303F, 0x0C3F, 0x3C3F, 0x033F, 0x333F, 0x0F3F, 0x3F3F,
+ 0x00FF, 0x30FF, 0x0CFF, 0x3CFF, 0x03FF, 0x33FF, 0x0FFF, 0x3FFF, // $7x
+ 0x2000, 0x3800, 0x2600, 0x3E00, 0x2180, 0x3980, 0x2780, 0x3F80,
+ 0x2060, 0x3860, 0x2660, 0x3E60, 0x21E0, 0x39E0, 0x27E0, 0x3FE0, // $8x
+ 0x2018, 0x3818, 0x2618, 0x3E18, 0x2198, 0x3998, 0x2798, 0x3F98,
+ 0x2078, 0x3878, 0x2678, 0x3E78, 0x21F8, 0x39F8, 0x27F8, 0x3FF8, // $9x
+ 0x2006, 0x3806, 0x2606, 0x3E06, 0x2186, 0x3986, 0x2786, 0x3F86,
+ 0x2066, 0x3866, 0x2666, 0x3E66, 0x21E6, 0x39E6, 0x27E6, 0x3FE6, // $Ax
+ 0x201E, 0x381E, 0x261E, 0x3E1E, 0x219E, 0x399E, 0x279E, 0x3F9E,
+ 0x207E, 0x387E, 0x267E, 0x3E7E, 0x21FE, 0x39FE, 0x27FE, 0x3FFE, // $Bx
+ 0x2001, 0x3801, 0x2601, 0x3E01, 0x2181, 0x3981, 0x2781, 0x3F81,
+ 0x2061, 0x3861, 0x2661, 0x3E61, 0x21E1, 0x39E1, 0x27E1, 0x3FE1, // $Cx
+ 0x2019, 0x3819, 0x2619, 0x3E19, 0x2199, 0x3999, 0x2799, 0x3F99,
+ 0x2079, 0x3879, 0x2679, 0x3E79, 0x21F9, 0x39F9, 0x27F9, 0x3FF9, // $Dx
+ 0x2007, 0x3807, 0x2607, 0x3E07, 0x2187, 0x3987, 0x2787, 0x3F87,
+ 0x2067, 0x3867, 0x2667, 0x3E67, 0x21E7, 0x39E7, 0x27E7, 0x3FE7, // $Ex
+ 0x201F, 0x381F, 0x261F, 0x3E1F, 0x219F, 0x399F, 0x279F, 0x3F9F,
+ 0x207F, 0x387F, 0x267F, 0x3E7F, 0x21FF, 0x39FF, 0x27FF, 0x3FFF // $Fx
+};
+
+static uint8_t blurTable[0x80][8]; // Color TV blur table
+static uint8_t mirrorTable[0x100];
+static uint32_t * palette = (uint32_t *)altColors;
+enum { ST_FIRST_ENTRY = 0, ST_COLOR_TV = 0, ST_WHITE_MONO, ST_GREEN_MONO, ST_LAST_ENTRY };
+static uint8_t screenType = ST_COLOR_TV;
+
+// Local functions
+
+static void Render40ColumnTextLine(uint8_t line);
+static void Render80ColumnTextLine(uint8_t line);
+static void Render40ColumnText(void);
+static void Render80ColumnText(void);
+static void RenderLoRes(uint16_t toLine = 24);
+static void RenderDLoRes(uint16_t toLine = 24);
+static void RenderHiRes(uint16_t toLine = 192);
+static void RenderDHiRes(uint16_t toLine = 192);
+static void RenderVideoFrame(/*uint32_t *, int*/);
+
+
+void SetupBlurTable(void)
+{
+ // NOTE: This table only needs to be 7 bits wide instead of 11, since the
+ // last four bits are copies of the previous four...
+ // Odd. Doing the bit patterns from 0-$7F doesn't work, but going
+ // from 0-$7FF stepping by 16 does. Hm.
+ // Well, it seems that going from 0-$7F doesn't have enough precision to do the job.
+ for(uint16_t bitPat=0; bitPat<0x800; bitPat+=0x10)
+ {
+ uint16_t w0 = bitPat & 0x111, w1 = bitPat & 0x222, w2 = bitPat & 0x444, w3 = bitPat & 0x888;
+
+ uint16_t blurred0 = (w0 | (w0 >> 1) | (w0 >> 2) | (w0 >> 3)) & 0x00FF;
+ uint16_t blurred1 = (w1 | (w1 >> 1) | (w1 >> 2) | (w1 >> 3)) & 0x00FF;
+ uint16_t blurred2 = (w2 | (w2 >> 1) | (w2 >> 2) | (w2 >> 3)) & 0x00FF;
+ uint16_t blurred3 = (w3 | (w3 >> 1) | (w3 >> 2) | (w3 >> 3)) & 0x00FF;
+
+ for(int8_t i=7; i>=0; i--)
+ {
+ uint8_t color = (((blurred0 >> i) & 0x01) << 3)
+ | (((blurred1 >> i) & 0x01) << 2)
+ | (((blurred2 >> i) & 0x01) << 1)
+ | ((blurred3 >> i) & 0x01);
+ blurTable[bitPat >> 4][7 - i] = color;
+ }
+ }
+
+ for(int i=0; i<256; i++)
+ {
+ mirrorTable[i] = ((i & 0x01) << 7)
+ | ((i & 0x02) << 5)
+ | ((i & 0x04) << 3)
+ | ((i & 0x08) << 1)
+ | ((i & 0x10) >> 1)
+ | ((i & 0x20) >> 3)
+ | ((i & 0x40) >> 5)
+ | ((i & 0x80) >> 7);
+ }
+}
+
+
+void TogglePalette(void)
+{
+ if (palette == (uint32_t *)colors)
+ {
+ palette = (uint32_t *)altColors;
+ SpawnMessage("ApplePC Color TV palette");
+ }
+ else if (palette == (uint32_t *)altColors)
+ {
+ palette = (uint32_t *)robColors;
+ SpawnMessage("Rob's Color TV palette");
+ }
+ else
+ {
+ palette = (uint32_t *)colors;
+ SpawnMessage("\"Master Color Values\" palette");
+ }
+}
+
+
+void CycleScreenTypes(void)
+{
+ char scrTypeStr[3][40] = { "Color TV", "White monochrome", "Green monochrome" };
+
+ screenType++;
+
+ if (screenType == ST_LAST_ENTRY)
+ screenType = ST_FIRST_ENTRY;
+
+ SpawnMessage("%s", scrTypeStr[screenType]);
+}
+
+
+void ToggleTickDisplay(void)
+{
+ showFrameTicks = !showFrameTicks;
+}
+
+
+static uint32_t msgTicks = 0;
+static char message[4096];
+
+void SpawnMessage(const char * text, ...)
+{
+ va_list arg;
+
+ va_start(arg, text);
+ vsprintf(message, text, arg);
+ va_end(arg);
+
+ msgTicks = 120;
+//WriteLog("\n%s\n", message);
+}
+
+
+static void DrawString2(uint32_t x, uint32_t y, uint32_t color, char * msg);
+static void DrawString(void)
+{
+//This approach works, and seems to be fast enough... Though it probably would
+//be better to make the oversized font to match this one...
+ for(uint32_t x=7; x<=9; x++)
+ for(uint32_t y=7; y<=9; y++)
+ DrawString2(x, y, 0x00000000, message);
+
+ DrawString2(8, 8, 0x0020FF20, message);
+}
+
+
+static void DrawString(uint32_t x, uint32_t y, uint32_t color, char * msg)
+{
+//This approach works, and seems to be fast enough... Though it probably would
+//be better to make the oversized font to match this one...
+ for(uint32_t xx=x-1; xx<=x+1; xx++)
+ for(uint32_t yy=y-1; yy<=y+1; yy++)
+ DrawString2(xx, yy, 0x00000000, msg);
+
+ DrawString2(x, y, color, msg);
+}
+
+
+static void DrawString2(uint32_t x, uint32_t y, uint32_t color, char * msg)
+{
+ uint32_t length = strlen(msg), address = x + (y * VIRTUAL_SCREEN_WIDTH);
+ uint8_t nBlue = (color >> 16) & 0xFF, nGreen = (color >> 8) & 0xFF, nRed = color & 0xFF;
+
+ for(uint32_t i=0; i<length; i++)
+ {
+ uint8_t c = msg[i];
+ c = (c < 32 ? 0 : c - 32);
+ uint32_t fontAddr = (uint32_t)c * FONT_WIDTH * FONT_HEIGHT;
+
+ for(uint32_t yy=0; yy<FONT_HEIGHT; yy++)
+ {
+ for(uint32_t xx=0; xx<FONT_WIDTH; xx++)
+ {
+ uint8_t trans = font2[fontAddr++];
+
+ if (trans)
+ {
+ uint32_t existingColor = *(scrBuffer + address + xx + (yy * VIRTUAL_SCREEN_WIDTH));
+
+ uint8_t eBlue = (existingColor >> 16) & 0xFF,
+ eGreen = (existingColor >> 8) & 0xFF,
+ eRed = existingColor & 0xFF;
+
+//This could be sped up by using a table of 5 + 5 + 5 bits (32 levels transparency -> 32768 entries)
+//Here we've modified it to have 33 levels of transparency (could have any # we want!)
+//because dividing by 32 is faster than dividing by 31...!
+ uint8_t invTrans = 255 - trans;
+
+ uint32_t bRed = (eRed * invTrans + nRed * trans) / 255;
+ uint32_t bGreen = (eGreen * invTrans + nGreen * trans) / 255;
+ uint32_t bBlue = (eBlue * invTrans + nBlue * trans) / 255;
+
+//THIS IS NOT ENDIAN SAFE
+//NB: Setting the alpha channel here does nothing.
+ *(scrBuffer + address + xx + (yy * VIRTUAL_SCREEN_WIDTH)) = 0x7F000000 | (bBlue << 16) | (bGreen << 8) | bRed;
+ }
+ }
+ }
+
+ address += FONT_WIDTH;
+ }
+}
+
+
+static void DrawFrameTicks(void)
+{
+ uint32_t color = 0x00FF2020;
+ uint32_t address = 8 + (24 * VIRTUAL_SCREEN_WIDTH);
+
+ for(uint32_t i=0; i<17; i++)
+ {
+ for(uint32_t yy=0; yy<5; yy++)
+ {
+ for(uint32_t xx=0; xx<9; xx++)
+ {
+//THIS IS NOT ENDIAN SAFE
+//NB: Setting the alpha channel here does nothing.
+ *(scrBuffer + address + xx + (yy * VIRTUAL_SCREEN_WIDTH)) = 0x7F000000;
+ }
+ }
+
+ address += (5 * VIRTUAL_SCREEN_WIDTH);
+ }
+
+ address = 8 + (24 * VIRTUAL_SCREEN_WIDTH);
+
+ // frameTicks is the amount of time remaining; so to show the amount
+ // consumed, we subtract it from 17.
+ uint32_t bars = 17 - frameTicks;
+
+ if (bars & 0x80000000)
+ bars = 0;
+
+ for(uint32_t i=0; i<17; i++)
+ {
+ for(uint32_t yy=1; yy<4; yy++)
+ {
+ for(uint32_t xx=1; xx<8; xx++)
+ {
+//THIS IS NOT ENDIAN SAFE
+//NB: Setting the alpha channel here does nothing.
+ *(scrBuffer + address + xx + (yy * VIRTUAL_SCREEN_WIDTH)) = (i < bars ? color : 0x003F0000);
+ }
+ }
+
+ address += (5 * VIRTUAL_SCREEN_WIDTH);
+ }
+
+ static char msg[32];
+
+ if ((frameTimePtr % 15) == 0)
+ {
+// uint32_t prevClock = (frameTimePtr + 1) % 60;
+ uint64_t prevClock = (frameTimePtr + 1) % 60;
+// float fps = 59.0f / (((float)frameTime[frameTimePtr] - (float)frameTime[prevClock]) / 1000.0f);
+ double fps = 59.0 / ((double)(frameTime[frameTimePtr] - frameTime[prevClock]) / (double)SDL_GetPerformanceFrequency());
+ sprintf(msg, "%.1lf FPS", fps);
+ }
+
+ DrawString(20, 24, color, msg);
+}
+
+
+static void Render40ColumnTextLine(uint8_t line)
+{
+ uint32_t pixelOn = (screenType == ST_GREEN_MONO ? 0xFF61FF61 : 0xFFFFFFFF);
+
+ for(int x=0; x<40; x++)
+ {
+ uint8_t chr = ram[lineAddrLoRes[line] + (displayPage2 ? 0x0400 : 0x0000) + x];
+
+ // Render character at (x, y)
+
+ for(int cy=0; cy<8; cy++)
+ {
+ for(int cx=0; cx<7; cx++)
+ {
+ uint32_t pixel = 0xFF000000;
+
+ if (alternateCharset)
+ {
+ if (textChar2e[(chr * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+ }
+ else
+ {
+ if ((chr & 0xC0) == 0x40)
+ {
+ if (textChar2e[((chr & 0x3F) * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+
+ if (flash)
+ pixel = pixel ^ (screenType == ST_GREEN_MONO ? 0x0061FF61 : 0x00FFFFFF);
+ }
+ else
+ {
+ if (textChar2e[(chr * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+ }
+ }
+
+ scrBuffer[(x * 7 * 2) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + (cx * 2) + 0 + (cy * VIRTUAL_SCREEN_WIDTH * 2)] = pixel;
+ scrBuffer[(x * 7 * 2) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + (cx * 2) + 1 + (cy * VIRTUAL_SCREEN_WIDTH * 2)] = pixel;
+
+ // QnD method to get blank alternate lines in text mode
+ if (screenType == ST_GREEN_MONO)
+ pixel = 0xFF000000;
+
+ {
+ scrBuffer[(x * 7 * 2) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + (cx * 2) + 0 + (((cy * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = pixel;
+ scrBuffer[(x * 7 * 2) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + (cx * 2) + 1 + (((cy * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = pixel;
+ }
+ }
+ }
+ }
+}
+
+
+static void Render80ColumnTextLine(uint8_t line)
+{
+ uint32_t pixelOn = (screenType == ST_GREEN_MONO ? 0xFF61FF61 : 0xFFFFFFFF);
+
+ for(int x=0; x<80; x++)
+ {
+ uint8_t chr;
+
+ if (x & 0x01)
+ chr = ram[lineAddrLoRes[line] + (x >> 1)];
+ else
+ chr = ram2[lineAddrLoRes[line] + (x >> 1)];
+
+ // Render character at (x, y)
+
+ for(int cy=0; cy<8; cy++)
+ {
+ for(int cx=0; cx<7; cx++)
+ {
+ uint32_t pixel = 0xFF000000;
+
+ if (alternateCharset)
+ {
+ if (textChar2e[(chr * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+ }
+ else
+ {
+ if ((chr & 0xC0) == 0x40)
+ {
+ if (textChar2e[((chr & 0x3F) * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+
+ if (flash)
+ pixel = pixel ^ (screenType == ST_GREEN_MONO ? 0x0061FF61 : 0x00FFFFFF);
+ }
+ else
+ {
+ if (textChar2e[(chr * 56) + cx + (cy * 7)])
+ pixel = pixelOn;
+ }
+ }
+
+ scrBuffer[(x * 7) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + cx + (cy * 2 * VIRTUAL_SCREEN_WIDTH)] = pixel;
+
+ // QnD method to get blank alternate lines in text mode
+ if (screenType == ST_GREEN_MONO)
+ pixel = 0xFF000000;
+
+ scrBuffer[(x * 7) + (line * VIRTUAL_SCREEN_WIDTH * 8 * 2) + cx + (((cy * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = pixel;
+ }
+ }
+ }
+}
+
+
+static void Render40ColumnText(void)
+{
+ for(uint8_t line=0; line<24; line++)
+ Render40ColumnTextLine(line);
+}
+
+
+static void Render80ColumnText(void)
+{
+ for(uint8_t line=0; line<24; line++)
+ Render80ColumnTextLine(line);
+}
+
+
+static void RenderLoRes(uint16_t toLine/*= 24*/)
+{
+// NOTE: The green mono rendering doesn't skip every other line... !!! FIX !!!
+// Also, we could set up three different Render functions depending on
+// which render type was set and call it with a function pointer. Would
+// be faster than the nested ifs we have now.
+/*
+Note that these colors correspond to the bit patterns generated by the numbers 0-F in order:
+Color #s correspond to the bit patterns in reverse... Interesting!
+
+00 00 00 -> 0 [0000] -> 0 (lores color #)
+3c 4d 00 -> 8 [0001] -> 8? BROWN
+00 5d 3c -> 4 [0010] -> 4? DARK GREEN
+3c aa 3c -> 12 [0011] -> 12? LIGHT GREEN (GREEN)
+41 30 7d -> 2 [0100] -> 2? DARK BLUE
+7d 7d 7d -> 10 [0101] -> 10? LIGHT GRAY
+41 8e ba -> 6 [0110] -> 6? MEDIUM BLUE (BLUE)
+7d db ba -> 14 [0111] -> 14? AQUAMARINE (AQUA)
+7d 20 41 -> 1 [1000] -> 1? DEEP RED (MAGENTA)
+ba 6d 41 -> 9 [1001] -> 9? ORANGE
+7d 7d 7d -> 5 [1010] -> 5? DARK GRAY
+ba cb 7d -> 13 [1011] -> 13? YELLOW
+be 51 be -> 3 [1100] -> 3 PURPLE (VIOLET)
+fb 9e be -> 11 [1101] -> 11? PINK
+be ae fb -> 7 [1110] -> 7? LIGHT BLUE (CYAN)
+fb fb fb -> 15 [1111] -> 15 WHITE
+*/
+ uint8_t mirrorNybble[16] = { 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 };
+
+ uint32_t pixelOn = (screenType == ST_WHITE_MONO ? 0xFFFFFFFF : 0xFF61FF61);
+
+ for(uint16_t y=0; y<toLine; y++)
+ {
+ // Do top half of lores screen bytes...
+
+ uint32_t previous3Bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t scrByte1 = ram[lineAddrLoRes[y] + (displayPage2 ? 0x0400 : 0x0000) + x + 0] & 0x0F;
+ uint8_t scrByte2 = ram[lineAddrLoRes[y] + (displayPage2 ? 0x0400 : 0x0000) + x + 1] & 0x0F;
+ scrByte1 = mirrorNybble[scrByte1];
+ scrByte2 = mirrorNybble[scrByte2];
+ // This is just a guess, but it'll have to do for now...
+ uint32_t pixels = previous3Bits | (scrByte1 << 24) | (scrByte1 << 20) | (scrByte1 << 16)
+ | ((scrByte1 & 0x0C) << 12) | ((scrByte2 & 0x03) << 12)
+ | (scrByte2 << 8) | (scrByte2 << 4) | scrByte2;
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 11|11 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0x7F000000) >> 24;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint8_t color = blurTable[bitPat][j];
+
+ for(uint32_t cy=0; cy<8; cy++)
+ {
+ scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+// scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+ }
+ }
+ }
+
+ previous3Bits = pixels & 0x70000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ for(uint32_t cy=0; cy<8; cy++)
+ {
+ scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+// scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ }
+
+ pixels <<= 1;
+ }
+ }
+ }
+
+ // Now do bottom half...
+
+ previous3Bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t scrByte1 = ram[lineAddrLoRes[y] + (displayPage2 ? 0x0400 : 0x0000) + x + 0] >> 4;
+ uint8_t scrByte2 = ram[lineAddrLoRes[y] + (displayPage2 ? 0x0400 : 0x0000) + x + 1] >> 4;
+ scrByte1 = mirrorNybble[scrByte1];
+ scrByte2 = mirrorNybble[scrByte2];
+ // This is just a guess, but it'll have to do for now...
+ uint32_t pixels = previous3Bits | (scrByte1 << 24) | (scrByte1 << 20) | (scrByte1 << 16)
+ | ((scrByte1 & 0x0C) << 12) | ((scrByte2 & 0x03) << 12)
+ | (scrByte2 << 8) | (scrByte2 << 4) | scrByte2;
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 11|11 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0x7F000000) >> 24;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint8_t color = blurTable[bitPat][j];
+
+ for(uint32_t cy=8; cy<16; cy++)
+ {
+ scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+// scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+ }
+ }
+ }
+
+ previous3Bits = pixels & 0x70000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ for(uint32_t cy=8; cy<16; cy++)
+ {
+ scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+// scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ }
+
+ pixels <<= 1;
+ }
+ }
+ }
+ }
+}
+
+
+//
+// Render the Double Lo Res screen (HIRES off, DHIRES on)
+//
+static void RenderDLoRes(uint16_t toLine/*= 24*/)
+{
+// NOTE: The green mono rendering doesn't skip every other line... !!! FIX !!!
+// Also, we could set up three different Render functions depending on
+// which render type was set and call it with a function pointer. Would be
+// faster then the nested ifs we have now.
+/*
+Note that these colors correspond to the bit patterns generated by the numbers 0-F in order:
+Color #s correspond to the bit patterns in reverse... Interesting! [It's because
+the video generator reads the bit patters from bit 0--which makes them backwards
+from the normal POV.]
+
+00 00 00 -> 0 [0000] -> 0 (lores color #)
+3C 4D 00 -> 8 [0001] -> 8? BROWN
+00 5D 3C -> 4 [0010] -> 4? DARK GREEN
+3C AA 3C -> 12 [0011] -> 12? LIGHT GREEN (GREEN)
+41 30 7D -> 2 [0100] -> 2? DARK BLUE
+7D 7D 7D -> 10 [0101] -> 10? LIGHT GRAY (Grays are identical)
+41 8E BA -> 6 [0110] -> 6? MEDIUM BLUE (BLUE)
+7D DB BA -> 14 [0111] -> 14? AQUAMARINE (AQUA)
+7D 20 41 -> 1 [1000] -> 1? DEEP RED (MAGENTA)
+BA 6D 41 -> 9 [1001] -> 9? ORANGE
+7D 7D 7D -> 5 [1010] -> 5? DARK GRAY (Grays are identical)
+BA CB 7D -> 13 [1011] -> 13? YELLOW
+BE 51 BE -> 3 [1100] -> 3 PURPLE (VIOLET)
+FB 9E BE -> 11 [1101] -> 11? PINK
+BE AE FB -> 7 [1110] -> 7? LIGHT BLUE (CYAN)
+FB FB FB -> 15 [1111] -> 15 WHITE
+*/
+ uint8_t mirrorNybble[16] = { 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 };
+ // Rotated one bit right (in the nybble)--right instead of left because
+ // these are backwards after all :-P
+ uint8_t mirrorNybble2[16] = { 0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15 };
+ uint32_t pixelOn = (screenType == ST_WHITE_MONO ? 0xFFFFFFFF : 0xFF61FF61);
+
+ for(uint16_t y=0; y<toLine; y++)
+ {
+ // Do top half of double lores screen bytes...
+
+ uint32_t previous3Bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t scrByte3 = ram2[lineAddrLoRes[y] + x + 0] & 0x0F;
+ uint8_t scrByte4 = ram2[lineAddrLoRes[y] + x + 1] & 0x0F;
+ uint8_t scrByte1 = ram[lineAddrLoRes[y] + x + 0] & 0x0F;
+ uint8_t scrByte2 = ram[lineAddrLoRes[y] + x + 1] & 0x0F;
+ scrByte1 = mirrorNybble[scrByte1];
+ scrByte2 = mirrorNybble[scrByte2];
+ scrByte3 = mirrorNybble2[scrByte3];
+ scrByte4 = mirrorNybble2[scrByte4];
+ // This is just a guess, but it'll have to do for now...
+ uint32_t pixels = previous3Bits | (scrByte3 << 24)
+ | (scrByte3 << 20) | (scrByte1 << 16)
+ | ((scrByte1 & 0x0C) << 12) | ((scrByte4 & 0x03) << 12)
+ | (scrByte4 << 8) | (scrByte2 << 4) | scrByte2;
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 11|11 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0x7F000000) >> 24;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint8_t color = blurTable[bitPat][j];
+
+ for(uint32_t cy=0; cy<8; cy++)
+ {
+ scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+// scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+ }
+ }
+ }
+
+ previous3Bits = pixels & 0x70000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ for(uint32_t cy=0; cy<8; cy++)
+ {
+ scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ }
+
+ pixels <<= 1;
+ }
+ }
+ }
+
+ // Now do bottom half...
+
+ previous3Bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t scrByte3 = ram2[lineAddrLoRes[y] + x + 0] >> 4;
+ uint8_t scrByte4 = ram2[lineAddrLoRes[y] + x + 1] >> 4;
+ uint8_t scrByte1 = ram[lineAddrLoRes[y] + x + 0] >> 4;
+ uint8_t scrByte2 = ram[lineAddrLoRes[y] + x + 1] >> 4;
+ scrByte1 = mirrorNybble[scrByte1];
+ scrByte2 = mirrorNybble[scrByte2];
+ scrByte3 = mirrorNybble2[scrByte3];
+ scrByte4 = mirrorNybble2[scrByte4];
+ // This is just a guess, but it'll have to do for now...
+// uint32_t pixels = previous3Bits | (scrByte1 << 24) | (scrByte1 << 20) | (scrByte1 << 16)
+// | ((scrByte1 & 0x0C) << 12) | ((scrByte2 & 0x03) << 12)
+// | (scrByte2 << 8) | (scrByte2 << 4) | scrByte2;
+ uint32_t pixels = previous3Bits | (scrByte3 << 24)
+ | (scrByte3 << 20) | (scrByte1 << 16)
+ | ((scrByte1 & 0x0C) << 12) | ((scrByte4 & 0x03) << 12)
+ | (scrByte4 << 8) | (scrByte2 << 4) | scrByte2;
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 11|11 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0x7F000000) >> 24;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint8_t color = blurTable[bitPat][j];
+
+ for(uint32_t cy=8; cy<16; cy++)
+ {
+ scrBuffer[((x * 14) + (i * 4) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+ }
+ }
+ }
+
+ previous3Bits = pixels & 0x70000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ for(uint32_t cy=8; cy<16; cy++)
+ {
+ scrBuffer[((x * 14) + j) + (((y * 16) + cy) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ }
+
+ pixels <<= 1;
+ }
+ }
+ }
+ }
+}
+
+
+static void RenderHiRes(uint16_t toLine/*= 192*/)
+{
+#if 0
+ uint32_t pixelOn = (screenType == ST_WHITE_MONO ? 0xFFFFFFFF : 0xFF61FF61);
+#else
+// Now it is. Now roll this fix into all the other places... !!! FIX !!!
+// The colors are set in the 8-bit array as R G B A
+ uint8_t monoColors[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x61, 0xFF, 0x61, 0xFF };
+ uint32_t * colorPtr = (uint32_t *)monoColors;
+ uint32_t pixelOn = (screenType == ST_WHITE_MONO ? colorPtr[0] : colorPtr[1]);
+#endif
+
+ for(uint16_t y=0; y<toLine; y++)
+ {
+ uint16_t previousLoPixel = 0;
+ uint32_t previous3bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t screenByte = ram[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x];
+ uint32_t pixels = appleHiresToMono[previousLoPixel | screenByte];
+ previousLoPixel = (screenByte << 2) & 0x0100;
+
+ screenByte = ram[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x + 1];
+ uint32_t pixels2 = appleHiresToMono[previousLoPixel | screenByte];
+ previousLoPixel = (screenByte << 2) & 0x0100;
+
+ pixels = previous3bits | (pixels << 14) | pixels2;
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 1111 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0x7F000000) >> 24;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint8_t color = blurTable[bitPat][j];
+#if 0
+//This doesn't seem to make things go any faster...
+//It's the OpenGL render that's faster... Hmm...
+ scrBuffer[(x * 14) + (i * 4) + j + (y * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+#else
+ scrBuffer[(x * 14) + (i * 4) + j + (((y * 2) + 0) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+ scrBuffer[(x * 14) + (i * 4) + j + (((y * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = palette[color];
+#endif
+ }
+ }
+
+ previous3bits = pixels & 0x70000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ scrBuffer[(x * 14) + j + (((y * 2) + 0) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+
+ if (screenType == ST_GREEN_MONO)
+ pixels &= 0x07FFFFFF;
+
+ scrBuffer[(x * 14) + j + (((y * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ pixels <<= 1;
+ }
+ }
+ }
+ }
+}
+
+
+static void RenderDHiRes(uint16_t toLine/*= 192*/)
+{
+// Now it is. Now roll this fix into all the other places... !!! FIX !!!
+// The colors are set in the 8-bit array as R G B A
+ uint8_t monoColors[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x61, 0xFF, 0x61, 0xFF };
+ uint32_t * colorPtr = (uint32_t *)monoColors;
+ uint32_t pixelOn = (screenType == ST_WHITE_MONO ? colorPtr[0] : colorPtr[1]);
+
+ for(uint16_t y=0; y<toLine; y++)
+ {
+ uint32_t previous4bits = 0;
+
+ for(uint16_t x=0; x<40; x+=2)
+ {
+ uint8_t screenByte = ram[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x];
+ uint32_t pixels = (mirrorTable[screenByte & 0x7F]) << 14;
+ screenByte = ram[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x + 1];
+ pixels = pixels | (mirrorTable[screenByte & 0x7F]);
+ screenByte = ram2[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x];
+ pixels = pixels | ((mirrorTable[screenByte & 0x7F]) << 21);
+ screenByte = ram2[lineAddrHiRes[y] + (displayPage2 ? 0x2000 : 0x0000) + x + 1];
+ pixels = pixels | ((mirrorTable[screenByte & 0x7F]) << 7);
+ pixels = previous4bits | (pixels >> 1);
+
+ // We now have 28 pixels (expanded from 14) in word: mask is $0F FF FF FF
+ // 0ppp 1111 1111 1111 1111 1111 1111 1111
+ // 31 27 23 19 15 11 7 3 0
+
+ if (screenType == ST_COLOR_TV)
+ {
+ for(uint8_t i=0; i<7; i++)
+ {
+ uint8_t bitPat = (pixels & 0xFE000000) >> 25;
+ pixels <<= 4;
+
+ for(uint8_t j=0; j<4; j++)
+ {
+ uint32_t color = palette[blurTable[bitPat][j]];
+ scrBuffer[(x * 14) + (i * 4) + j + (((y * 2) + 0) * VIRTUAL_SCREEN_WIDTH)] = color;
+ scrBuffer[(x * 14) + (i * 4) + j + (((y * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = color;
+ }
+ }
+
+ previous4bits = pixels & 0xF0000000;
+ }
+ else
+ {
+ for(int j=0; j<28; j++)
+ {
+ scrBuffer[(x * 14) + j + (((y * 2) + 0) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+
+ if (screenType == ST_GREEN_MONO)
+ pixels &= 0x07FFFFFF;
+
+ scrBuffer[(x * 14) + j + (((y * 2) + 1) * VIRTUAL_SCREEN_WIDTH)] = (pixels & 0x08000000 ? pixelOn : 0xFF000000);
+ pixels <<= 1;
+ }
+ }
+ }
+ }
+}
+
+
+void RenderVideoFrame(void)
+{
+ if (GUI::powerOnState == true)
+ {
+ if (textMode)
+ {
+ if (!col80Mode)
+ Render40ColumnText();
+ else
+ Render80ColumnText();
+ }
+ else
+ {
+ if (mixedMode)
+ {
+ if (dhires)
+ {
+ if (hiRes)
+ RenderDHiRes(160);
+ else
+ RenderDLoRes(20);
+ }
+ else if (hiRes)
+ RenderHiRes(160);
+ else
+ RenderLoRes(20);
+
+ Render40ColumnTextLine(20);
+ Render40ColumnTextLine(21);
+ Render40ColumnTextLine(22);
+ Render40ColumnTextLine(23);
+ }
+ else
+ {
+ if (dhires)
+ {
+ if (hiRes)
+ RenderDHiRes();
+ else
+ RenderDLoRes();
+ }
+ else if (hiRes)
+ RenderHiRes();
+ else
+ RenderLoRes();
+ }
+ }
+ }
+ else
+ {
+ memset(scrBuffer, 0, VIRTUAL_SCREEN_WIDTH * VIRTUAL_SCREEN_HEIGHT * sizeof(uint32_t));
+ }
+
+ if (msgTicks)
+ {
+ DrawString();
+ msgTicks--;
+ }
+
+ if (showFrameTicks)
+ DrawFrameTicks();
+}
//
return false;
}
- int retVal = SDL_CreateWindowAndRenderer(VIRTUAL_SCREEN_WIDTH * 2, VIRTUAL_SCREEN_HEIGHT * 2, SDL_WINDOW_OPENGL, &sdlWindow, &sdlRenderer);
+ sdlWindow = SDL_CreateWindow("Apple2", settings.winX, settings.winY, VIRTUAL_SCREEN_WIDTH * 2, VIRTUAL_SCREEN_HEIGHT * 2, 0);
- if (retVal != 0)
+ if (sdlWindow == NULL)
+ {
+ WriteLog("Video: Could not create window: %s\n", SDL_GetError());
+ return false;
+ }
+
+ sdlRenderer = SDL_CreateRenderer(sdlWindow, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+
+ if (sdlRenderer == NULL)
{
- WriteLog("Video: Could not window and/or renderer: %s\n", SDL_GetError());
+ WriteLog("Video: Could not create renderer: %s\n", SDL_GetError());
return false;
}
- // Make the scaled rendering look smoother.
+ // Make sure what we put there is what we get:
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
-// SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "nearest");
SDL_RenderSetLogicalSize(sdlRenderer, VIRTUAL_SCREEN_WIDTH, VIRTUAL_SCREEN_HEIGHT);
+ // Set the application's icon & title...
+ SDL_Surface * iconSurface = SDL_CreateRGBSurfaceFrom(icon, 64, 64, 32, 64*4, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
+ SDL_SetWindowIcon(sdlWindow, iconSurface);
+ SDL_FreeSurface(iconSurface);
+ SDL_SetWindowTitle(sdlWindow, "Apple2 Emulator");
+
sdlTexture = SDL_CreateTexture(sdlRenderer,
SDL_PIXELFORMAT_ABGR8888, SDL_TEXTUREACCESS_STREAMING,
VIRTUAL_SCREEN_WIDTH, VIRTUAL_SCREEN_HEIGHT);
+ // Start in fullscreen, if user requested it via config file
+ int response = SDL_SetWindowFullscreen(sdlWindow, (settings.fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0));
+
+ if (response != 0)
+ WriteLog("Video::FullScreen: SDL error = %s\n", SDL_GetError());
+
+ SetupBlurTable();
+
WriteLog("Video: Successfully initialized.\n");
return true;
}
void VideoDone(void)
{
WriteLog("Video: Shutting down SDL...\n");
+ SDL_DestroyTexture(sdlTexture);
+ SDL_DestroyRenderer(sdlRenderer);
+ SDL_DestroyWindow(sdlWindow);
SDL_Quit();
WriteLog("Video: Done.\n");
}
//
-// Render the screen buffer to the primary screen surface
+// Render the Apple video screen to the primary texture
//
-void RenderScreenBuffer(void)
+void RenderAppleScreen(SDL_Renderer * renderer)
{
- SDL_UpdateTexture(sdlTexture, NULL, scrBuffer, VIRTUAL_SCREEN_WIDTH * sizeof(Uint32));
- SDL_RenderClear(sdlRenderer);
- SDL_RenderCopy(sdlRenderer, sdlTexture, NULL, NULL);
- SDL_RenderPresent(sdlRenderer);
+ SDL_LockTexture(sdlTexture, NULL, (void **)&scrBuffer, &scrPitch);
+ RenderVideoFrame();
+ SDL_UnlockTexture(sdlTexture);
+ SDL_RenderClear(renderer); // Without this, full screen has trash on the sides
+ SDL_RenderCopy(renderer, sdlTexture, NULL, NULL);
}
settings.fullscreen = !settings.fullscreen;
int retVal = SDL_SetWindowFullscreen(sdlWindow, (settings.fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0));
- SDL_ShowCursor(settings.fullscreen ? 0 : 1);
if (retVal != 0)
WriteLog("Video::ToggleFullScreen: SDL error = %s\n", SDL_GetError());
projects / apple2 / blobdiff