222 lines
9.6 KiB
C++
222 lines
9.6 KiB
C++
#ifndef __JABYENGINE_GPU_IO_HPP__
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#define __JABYENGINE_GPU_IO_HPP__
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#include "ioport.hpp"
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#include "../../GPU/gpu_types.hpp"
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#include <stdio.h>
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namespace JabyEngine {
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namespace GPU_IO {
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enum struct DisplayAreaColorDepth {
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$15bit = 0,
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$24bit = 1,
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};
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enum struct HorizontalResolution {
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$256 = 0,
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$320 = 1,
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$512 = 2,
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$640 = 3,
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};
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enum struct VerticalResolution {
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$240 = 0,
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$480 = 1
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};
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enum struct DMADirection {
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Off = 0,
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Fifo = 1,
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CPU2GPU = 2,
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GPU2CPU = 3,
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};
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enum struct DisplayState {
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On = 0,
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Off = 1
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};
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__declare_io_type(DisplayMode, uint32_t,
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enum struct TVEncoding {
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NTSC = 0,
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PAL = 1,
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};
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static constexpr auto HorizontalResolution368 = Bit(6);
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static constexpr auto VerticalInterlace = Bit(5);
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static constexpr auto DisplayAreaColorDepth = BitRange::from_to(4, 4);
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static constexpr auto VideoMode = BitRange::from_to(3, 3);
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static constexpr auto VerticalResolution = BitRange::from_to(2, 2);
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static constexpr auto HorizontalResolution = BitRange::from_to(0, 1);
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static constexpr Self PAL() {
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return Self::from(
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HorizontalResolution.with(GPU_IO::HorizontalResolution::$320),
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VerticalResolution.with(GPU_IO::VerticalResolution::$240),
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VideoMode.with(TVEncoding::PAL),
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DisplayAreaColorDepth.with(GPU_IO::DisplayAreaColorDepth::$15bit)
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);
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}
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static constexpr Self NTSC() {
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return Self::from(
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HorizontalResolution.with(GPU_IO::HorizontalResolution::$320),
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VerticalResolution.with(GPU_IO::VerticalResolution::$240),
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VideoMode.with(TVEncoding::NTSC),
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DisplayAreaColorDepth.with(GPU_IO::DisplayAreaColorDepth::$15bit)
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);
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}
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);
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__declare_io_type(GP0, uint32_t,
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);
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__declare_io_type(GP1, uint32_t,
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);
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struct Command {
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struct Helper {
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static constexpr uint32_t construct_cmd(uint8_t cmd, uint32_t value) {
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return ((cmd << 24) | value);
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}
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static constexpr GP0_t DrawAreaTemplate(uint8_t code, uint16_t x, uint16_t y) {
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constexpr auto Command = BitRange::from_to(24, 31);
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constexpr auto Y = BitRange::from_to(10, 18);
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constexpr auto X = BitRange::from_to(0, 9);
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return {construct_cmd(code, Y.as_value(static_cast<uint32_t>(y)) | X.as_value(static_cast<uint32_t>(x)))};
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}
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};
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static constexpr GP0_t QuickFill(GPU::Color24 color) {
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return {(0x02 << 24) | color.raw()};
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}
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static constexpr GP0_t VRAM2VRAM_Blitting() {
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return {(0b100u << 29)};
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}
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static constexpr GP0_t CPU2VRAM_Blitting() {
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return {(0b101u << 29)};
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}
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static constexpr GP0_t TexPage(const GPU::PositionU16& page_pos, GPU::SemiTransparency transparency, GPU::TexturePageColor tex_color, bool dither, bool draw_on_display_area) {
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constexpr auto TexXRange = BitRange::from_to(0, 3);
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constexpr auto TexYRange = BitRange::from_to(4, 4);
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constexpr auto TransparencyRange = BitRange::from_to(5, 6);
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constexpr auto TextureColorRange = BitRange::from_to(7, 8);
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constexpr auto DitherBit = BitRange::from_to(9, 9);
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constexpr auto DrawOnDisplayAreaBit = BitRange::from_to(10, 10);
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return {Helper::construct_cmd(0xE1,
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TexXRange.as_value(page_pos.x >> 6) | TexYRange.as_value(page_pos.y >> 7) |
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TransparencyRange.as_value(static_cast<uint32_t>(transparency)) | TextureColorRange.as_value(static_cast<uint32_t>(tex_color)) |
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DitherBit.as_value(static_cast<uint32_t>(dither)) | DrawOnDisplayAreaBit.as_value(static_cast<uint32_t>(draw_on_display_area))
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)};
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}
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static constexpr GP0_t DrawAreaTopLeft(const GPU::PositionU16& position) {
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return Helper::DrawAreaTemplate(0xE3, position.x, position.y);
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}
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static constexpr GP0_t DrawAreaBottomRight(const GPU::PositionU16& position) {
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return Helper::DrawAreaTemplate(0xE4, position.x, position.y);
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}
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static constexpr GP0_t SetDrawOffset(const GPU::PositionI16& offset) {
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constexpr auto X = BitRange::from_to(0, 10);
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constexpr auto Y = BitRange::from_to(11, 21);
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return {Helper::construct_cmd(0xE5, X.as_value(static_cast<int32_t>(offset.x)) | Y.as_value(static_cast<int32_t>(offset.y)))};
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}
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static constexpr GP0_t TopLeftPosition(const GPU::PositionU16& position) {
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return {(static_cast<uint32_t>(position.y) << 16u) | position.x};
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}
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static constexpr GP0_t WidthHeight(const GPU::SizeU16& size) {
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return {(static_cast<uint32_t>(size.height) << 16u) | size.width};
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}
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static constexpr GP1_t Reset() {
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return {0};
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}
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static constexpr GP1_t ResetCMDBufer() {
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return {Helper::construct_cmd(0x01, 0)};
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}
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static constexpr GP1_t SetDisplayState(DisplayState state) {
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return {Helper::construct_cmd(0x03, static_cast<uint32_t>(state))};
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}
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static constexpr GP1_t DMADirection(DMADirection dir) {
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return {Helper::construct_cmd(0x04, static_cast<uint32_t>(dir))};
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}
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static constexpr GP1_t DisplayArea(const GPU::PositionU16& position) {
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constexpr auto X = BitRange::from_to(0, 9);
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constexpr auto Y = BitRange::from_to(10, 18);
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return {Helper::construct_cmd(0x05, X.as_value(static_cast<uint32_t>(position.x)) | Y.as_value(static_cast<uint32_t>(position.y)))};
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}
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static constexpr GP1_t HorizontalDisplayRange(uint16_t x1, uint16_t x2) {
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constexpr auto X1 = BitRange::from_to(0, 11);
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constexpr auto X2 = BitRange::from_to(12, 23);
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return {Helper::construct_cmd(0x06, X1.as_value(static_cast<uint32_t>(x1)) | X2.as_value(static_cast<uint32_t>(x2)))};
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}
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static constexpr GP1_t VerticalDisplayRange(uint16_t y1, uint16_t y2) {
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constexpr auto Y1 = BitRange::from_to(0, 9);
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constexpr auto Y2 = BitRange::from_to(10, 19);
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return {Helper::construct_cmd(0x07, Y1.as_value(static_cast<uint32_t>(y1)) | Y2.as_value(static_cast<uint32_t>(y2)))};
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}
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static constexpr GP1_t DisplayMode(DisplayMode_t mode) {
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return {Helper::construct_cmd(0x08, mode)};
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}
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};
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__declare_io_type(GPUSTAT, uint32_t,
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static constexpr auto DrawingOddLinesInterlaced = Bit(31);
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static constexpr auto DMADirectionValue = BitRange::from_to(29, 30);
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static constexpr auto DMAReady = Bit(28);
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static constexpr auto VRAMtoCPUtransferReay = Bit(27);
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static constexpr auto GP0ReadyForCMD = Bit(26);
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static constexpr auto FifoNotFull = Bit(25); // Only for Fifo
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static constexpr auto InterruptRequest = Bit(24);
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static constexpr auto DisplayDisabled = Bit(23);
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static constexpr auto VerticalInterlaceOn = Bit(22);
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static constexpr auto DisplayAreaColorDepth = BitRange::from_to(21, 21);
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static constexpr auto VideoModePal = Bit(20);
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static constexpr auto VerticalResolutionValue = BitRange::from_to(19, 19);
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static constexpr auto HorizontalResolutionValue = BitRange::from_to(17, 18);
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static constexpr auto HorizontalResolution368 = Bit(16);
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static constexpr auto TexturesDisabled = Bit(15);
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static constexpr auto NotDrawingMaskedPixels = Bit(12);
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static constexpr auto MaskBitSetDuringDrawEnabled = Bit(11);
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static constexpr auto DrawingToDisplayAreadAllowed = Bit(10);
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static constexpr auto DitherEnabled = Bit(9);
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static constexpr auto TexturePageColorValue = BitRange::from_to(7, 8);
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static constexpr auto SemiTransparencyValue = BitRange::from_to(5, 6);
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static constexpr auto TexturePageY = BitRange::from_to(4, 4); // N*256
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static constexpr auto TexturePageX = BitRange::from_to(0, 3); // N*64
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static constexpr auto VerticalResolution480 = Bit(19);
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static constexpr auto TexturePageY256 = Bit(4);
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);
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typedef volatile uint32_t GPUREAD_v;
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__declare_new_io_port(GP0, 0x1F801810);
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__declare_new_io_port(GP1, 0x1F801814);
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__declare_new_const_io_port(GPUREAD, 0x1F801810);
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__declare_new_const_io_port(GPUSTAT, 0x1F801814);
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}
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}
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#endif //!__JABYENGINE_GPU_IO_HPP__
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