diff options
Diffstat (limited to 'src/devices/bus/nubus/pds30_cb264.cpp')
-rw-r--r-- | src/devices/bus/nubus/pds30_cb264.cpp | 55 |
1 files changed, 23 insertions, 32 deletions
diff --git a/src/devices/bus/nubus/pds30_cb264.cpp b/src/devices/bus/nubus/pds30_cb264.cpp index aa0ca1df648..388aa5f54d5 100644 --- a/src/devices/bus/nubus/pds30_cb264.cpp +++ b/src/devices/bus/nubus/pds30_cb264.cpp @@ -10,6 +10,9 @@ #include "pds30_cb264.h" #include "screen.h" +#include <algorithm> + + #define CB264SE30_SCREEN_NAME "cb264_screen" #define CB264SE30_ROM_REGION "cb264_rom" @@ -133,21 +136,17 @@ void nubus_cb264se30_device::device_timer(emu_timer &timer, device_timer_id tid, uint32_t nubus_cb264se30_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { - uint32_t *scanline; - int x, y; - uint8_t pixels, *vram; - - vram = &m_vram[8*1024]; + uint8_t const *const vram = &m_vram[8*1024]; switch (m_mode) { case 0: // 1 bpp? - for (y = 0; y < 480; y++) + for (int y = 0; y < 480; y++) { - scanline = &bitmap.pix32(y); - for (x = 0; x < 640/8; x++) + uint32_t *scanline = &bitmap.pix(y); + for (int x = 0; x < 640/8; x++) { - pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; + uint8_t const pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; *scanline++ = m_palette[(pixels&0x80)]; *scanline++ = m_palette[((pixels<<1)&0x80)]; @@ -162,12 +161,12 @@ uint32_t nubus_cb264se30_device::screen_update(screen_device &screen, bitmap_rgb break; case 1: // 2 bpp - for (y = 0; y < 480; y++) + for (int y = 0; y < 480; y++) { - scanline = &bitmap.pix32(y); - for (x = 0; x < 640/4; x++) + uint32_t *scanline = &bitmap.pix(y); + for (int x = 0; x < 640/4; x++) { - pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; + uint8_t const pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; *scanline++ = m_palette[(pixels&0xc0)]; *scanline++ = m_palette[((pixels<<2)&0xc0)]; @@ -178,13 +177,12 @@ uint32_t nubus_cb264se30_device::screen_update(screen_device &screen, bitmap_rgb break; case 2: // 4 bpp - for (y = 0; y < 480; y++) + for (int y = 0; y < 480; y++) { - scanline = &bitmap.pix32(y); - - for (x = 0; x < 640/2; x++) + uint32_t *scanline = &bitmap.pix(y); + for (int x = 0; x < 640/2; x++) { - pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; + uint8_t const pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; *scanline++ = m_palette[(pixels&0xf0)]; *scanline++ = m_palette[((pixels&0x0f)<<4)]; @@ -193,13 +191,12 @@ uint32_t nubus_cb264se30_device::screen_update(screen_device &screen, bitmap_rgb break; case 3: // 8 bpp - for (y = 0; y < 480; y++) + for (int y = 0; y < 480; y++) { - scanline = &bitmap.pix32(y); - - for (x = 0; x < 640; x++) + uint32_t *scanline = &bitmap.pix(y); + for (int x = 0; x < 640; x++) { - pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; + uint8_t const pixels = vram[(y * 1024) + (BYTE4_XOR_BE(x))]; *scanline++ = m_palette[pixels]; } } @@ -207,17 +204,11 @@ uint32_t nubus_cb264se30_device::screen_update(screen_device &screen, bitmap_rgb case 4: // 24 bpp { - uint32_t *vram32 = (uint32_t *)&m_vram[0]; - uint32_t *base; + uint32_t const *const vram32 = (uint32_t *)&m_vram[0]; - for (y = 0; y < 480; y++) + for (int y = 0; y < 480; y++) { - scanline = &bitmap.pix32(y); - base = &vram32[y * 1024]; - for (x = 0; x < 640; x++) - { - *scanline++ = *base++; - } + std::copy_n(&vram32[y * 1024], 640, &bitmap.pix(y)); } } break; |