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mgba
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3DS: Working main loop

This commit is contained in:
Jeffrey Pfau 2014-12-10 01:43:32 -08:00
parent 13a6f4b924
commit 82cccd74eb
2 changed files with 30 additions and 22 deletions
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2
CMakeLists.txt
View File

@ -113,6 +113,8 @@ elseif(UNIX)
file(GLOB OS_SRC ${CMAKE_SOURCE_DIR}/src/platform/posix/*.c)
source_group("POSIX-specific code" FILES ${OS_SRC})
elseif(3DS)
enable_language(ASM)
add_definitions(-DCOLOR_16_BIT -DCOLOR_5_6_5)
list(APPEND OS_LIB ctru)
file(GLOB OS_SRC ${CMAKE_SOURCE_DIR}/src/platform/3ds/3ds-*.c)
source_group("3DS-specific code" FILES ${OS_SRC})

50
src/platform/3ds/main.c
View File

@ -7,6 +7,7 @@
#include "gba-video.h"
#include "renderers/video-software.h"
#include "util/memory.h"
#include "3ds-vfs.h"
@ -19,19 +20,28 @@ int main() {
gfxInit();
fsInit();
#ifdef COLOR_16_BIT
#ifdef COLOR_5_6_5
gfxSetScreenFormat(GFX_BOTTOM, GSP_RGB565_OES);
#else
gfxSetScreenFormat(GFX_BOTTOM, GSP_RGB5_A1_OES);
#endif
#else
gfxSetScreenFormat(GFX_BOTTOM, GSP_RGBA8_OES);
#endif
struct GBAVideoSoftwareRenderer renderer;
GBAVideoSoftwareRendererCreate(&renderer);
size_t stride = sizeof(color_t) * VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL;
color_t* videoBuffer = malloc(stride * VIDEO_VERTICAL_PIXELS);
struct GBA* gba = malloc(sizeof(struct GBA));
struct ARMCore* cpu = malloc(sizeof(struct ARMCore));
size_t stride = VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL;
color_t* videoBuffer = anonymousMemoryMap(stride * VIDEO_VERTICAL_PIXELS);
memset(videoBuffer, 0xFF, stride * VIDEO_VERTICAL_PIXELS);
struct GBA* gba = anonymousMemoryMap(sizeof(struct GBA));
struct ARMCore* cpu = anonymousMemoryMap(sizeof(struct ARMCore));
int activeKeys = 0;
renderer.outputBuffer = videoBuffer;
renderer.outputBufferStride = stride;
renderer.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
gba->keySource = &activeKeys;
gba->sync = 0;
@ -44,6 +54,7 @@ int main() {
FSUSER_OpenArchive(0, &sdmcArchive);
struct VFile* rom = VFileOpen3DS(sdmcArchive, "/rom.gba", FS_OPEN_READ);
struct VFile* save = VFileOpen3DS(sdmcArchive, "/rom.sav", FS_OPEN_WRITE | FS_OPEN_CREATE);
GBACreate(gba);
@ -52,44 +63,39 @@ int main() {
GBAVideoAssociateRenderer(&gba->video, &renderer.d);
GBALoadROM(gba, rom, save, "rom.gba");
GBALoadROM(gba, rom, save, 0);
ARMReset(cpu);
bool seenVblank = false;
bool inVblank = false;
while (aptMainLoop()) {
hidScanInput();
ARMRunLoop(cpu);
if (!seenVblank) {
if (!inVblank) {
if (GBARegisterDISPSTATIsInVblank(gba->video.dispstat)) {
u16 width, height;
u8* screen = gfxGetFramebuffer(GFX_BOTTOM, GFX_BOTTOM, &width, &height);
int y;
for (y = 0; y < VIDEO_VERTICAL_PIXELS; ++y) {
u8* row = &screen[(width - VIDEO_HORIZONTAL_PIXELS) * BYTES_PER_PIXEL / 2];
row = &row[width * BYTES_PER_PIXEL * (((height - VIDEO_VERTICAL_PIXELS) / 2) + y)];
memcpy(row, &videoBuffer[stride * y], stride);
}
memcpy(screen, videoBuffer, stride * VIDEO_VERTICAL_PIXELS);
gfxFlushBuffers();
gfxSwapBuffersGpu();
gspWaitForEvent(GSPEVENT_VBlank0, false);
hidScanInput();
}
}
seenVblank = GBARegisterDISPSTATIsInVblank(gba->video.dispstat);
inVblank = GBARegisterDISPSTATGetInVblank(gba->video.dispstat);
}
ARMDeinit(cpu);
GBADestroy(gba);
free(gba);
free(cpu);
rom->close(rom);
save->close(save);
mappedMemoryFree(gba, 0);
mappedMemoryFree(cpu, 0);
mappedMemoryFree(videoBuffer, 0);
fsExit();
gfxExit();
hidExit();