Renders on PSP identically.

cmake/targets/psp.cmake

@@ -12,6 +12,17 @@ target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   mbedcrypto
   lzma
   m
+  pspdebug
+  pspdisplay
+  pspge
+  pspctrl
+  pspgu
+  pspaudio
+  pspaudiolib
+  psputility
+  pspvfpu
+  pspvram
+  psphprm
 )
 
 target_include_directories(${DUSK_LIBRARY_TARGET_NAME} PRIVATE
@@ -24,6 +35,8 @@ target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_PSP
   DUSK_INPUT_GAMEPAD
   DUSK_PLATFORM_ENDIAN_LITTLE
+  DUSK_DISPLAY_WIDTH=480
+  DUSK_DISPLAY_HEIGHT=272
 )
 
 # Postbuild, create .pbp file for PSP.

docker/psp/Dockerfile

@@ -2,6 +2,6 @@ FROM pspdev/pspdev:latest
 WORKDIR /workdir
 RUN apk add --no-cache \
   python3 \
-  py3-pip
-VOLUME ["/workdir"]
-CMD [ "/bin/bash", "-c", "./scripts/build-psp.sh" ]
+  py3-pip \
+  py3-dotenv
+VOLUME ["/workdir"]

scripts/build-psp-docker.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 docker build -t dusk-psp -f docker/psp/Dockerfile .
-docker run --rm -v $(pwd):/workdir dusk-psp
+docker run --rm -v $(pwd):/workdir dusk-psp /bin/bash -c "./scripts/build-psp.sh"

scripts/build-psp.sh

@@ -6,5 +6,6 @@ fi
 
 mkdir -p build-psp
 cd build-psp
-cmake .. -DDUSK_TARGET_SYSTEM=psp -DCMAKE_TOOLCHAIN_FILE=$PSPDEV/psp/share/pspdev.cmake
-make -j$(nproc)
+psp-cmake -DDUSK_TARGET_SYSTEM=psp -DCMAKE_TOOLCHAIN_FILE=$PSPDEV/psp/share/pspdev.cmake -DBUILD_PRX=1 -DCMAKE_BUILD_TYPE=Debug ..
+make
+# make -j$(nproc)

src/dusk/display/display.h

@@ -17,8 +17,8 @@
   #ifndef DUSK_DISPLAY_HEIGHT
     #error "DUSK_DISPLAY_HEIGHT must be defined"
   #endif
-  #define DISPLAY_WINDOW_WIDTH_DEFAULT DUSK_DISPLAY_WIDTH
-  #define DISPLAY_WINDOW_HEIGHT_DEFAULT DUSK_DISPLAY_HEIGHT
+  #define DUSK_DISPLAY_WIDTH_DEFAULT DUSK_DISPLAY_WIDTH
+  #define DUSK_DISPLAY_HEIGHT_DEFAULT DUSK_DISPLAY_HEIGHT
 #else
   #ifndef DUSK_DISPLAY_WIDTH_DEFAULT
     #error "DUSK_DISPLAY_WIDTH_DEFAULT must be defined."

src/duskpsp/CMakeLists.txt

@@ -9,5 +9,13 @@ target_include_directories(${DUSK_LIBRARY_TARGET_NAME}
     ${CMAKE_CURRENT_LIST_DIR}
 )
 
+# Sources
+target_sources(${DUSK_BINARY_TARGET_NAME}
+  PUBLIC
+    # hello.c
+)
+
 # Subdirs
-add_subdirectory(debug)
+add_subdirectory(debug)
+add_subdirectory(asset)
+add_subdirectory(input)

src/duskpsp/asset/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (c) 2026 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    assetpbp.c
+    assetpsp.c
+)

src/duskpsp/asset/assetpbp.c

@@ -1,87 +1,113 @@
-assertTrue(ENGINE.argc >= 1, "PSP requires launch argument.");
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
 
-    // PSP is given either the prx OR the PBP file.
-    // In the format of "ms0:/PSP/GAME/DUSK/EBOOT.PBP" or "host0:/Dusk.prx"
-    // IF the file is the PBP file, we are loading directly on the PSP itself.
-    // IF the file is the .prx then we are debugging and fopen will return
-    // relative filepaths correctly, e.g. host0:/dusk.dsk will be on host.
-    if(
-      stringEndsWithCaseInsensitive(ENGINE.argv[0], ".pbp") ||
-      ASSET_PBP_READ_PBP_FROM_HOST
-    ) {
-      const char_t *pbpPath = (
-        ASSET_PBP_READ_PBP_FROM_HOST ? "./EBOOT.PBP" : ENGINE.argv[0]
-      );
-      ASSET.pbpFile = fopen(pbpPath, "rb");
-      if(ASSET.pbpFile == NULL) {
-        errorThrow("Failed to open PBP file: %s", pbpPath);
-      }
+#include "asset/asset.h"
+#include "assert/assert.h"
+#include "util/memory.h"
 
-      // Get size of PBP file.
-      if(fseek(ASSET.pbpFile, 0, SEEK_END) != 0) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to seek to end of PBP file : %s", pbpPath);
-      }
-      size_t pbpSize = ftell(ASSET.pbpFile);
+errorret_t assetInitPBP(const char_t *pbpPath) {
+  assertNotNull(pbpPath, "PBP path cannot be null.");
+  assertStrLenMin(pbpPath, 1, "PBP path cannot be empty.");
+  assertStrLenMax(pbpPath, FILENAME_MAX, "PBP path is too long.");
 
-      // Rewind to start
-      if(fseek(ASSET.pbpFile, 0, SEEK_SET) != 0) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to seek to start of PBP file : %s", pbpPath);
-      }
+  ASSET.platform.pbpFile = fopen(pbpPath, "rb");
+  if(ASSET.platform.pbpFile == NULL) {
+    errorThrow("Failed to open PBP file: %s", pbpPath);
+  }
 
-      // Read the PBP header
-      size_t read = fread(
-        &ASSET.pbpHeader,
-        1,
-        sizeof(assetpbp_t),
-        ASSET.pbpFile
-      );
-      if(read != sizeof(assetpbp_t)) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to read PBP header", pbpPath);
-      }
- if(memoryCompare(
-        ASSET.pbpHeader.signature,
-        ASSET_PBP_SIGNATURE,
-        sizeof(ASSET_PBP_SIGNATURE)
-      ) != 0) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Invalid PBP signature in file: %s", pbpPath);
-      }
+  // Get size of PBP file.
+  if(fseek(ASSET.platform.pbpFile, 0, SEEK_END) != 0) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to seek to end of PBP file : %s", pbpPath);
+  }
 
-      // If we seek to the PSAR offset, we can read the WAD file from there
-      if(fseek(ASSET.pbpFile, ASSET.pbpHeader.psarOffset, SEEK_SET) != 0) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to seek to PSAR offset in PBP file: %s", pbpPath);
-      }
+  size_t pbpSize = ftell(ASSET.platform.pbpFile);
+  if(pbpSize == -1L) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to get size of PBP file : %s", pbpPath);
+  }
 
-      zip_uint64_t zipPsarOffset = (zip_uint64_t)ASSET.pbpHeader.psarOffset;
-      zip_int64_t zipPsarSize = (zip_int64_t)(
-        pbpSize - ASSET.pbpHeader.psarOffset
-      );
+  if(pbpSize < sizeof(assetpbpheader_t)) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("PBP file is too small to be valid: %s", pbpPath);
+  }
 
-      zip_source_t *psarSource = zip_source_filep_create(
-        ASSET.pbpFile,
-        zipPsarOffset,
-        zipPsarSize,
-        NULL
-      );
-      if(psarSource == NULL) {
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to create zip source in PBP file: %s", pbpPath);
-      }
-      
-      ASSET.zip = zip_open_from_source(
-        psarSource,
-        ZIP_RDONLY,
-        NULL
-      );
-      if(ASSET.zip == NULL) {
-        zip_source_free(psarSource);
-        fclose(ASSET.pbpFile);
-        errorThrow("Failed to open zip from PBP file: %s", pbpPath);
-      }
+  // Rewind to start
+  if(fseek(ASSET.platform.pbpFile, 0, SEEK_SET) != 0) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to seek to start of PBP file : %s", pbpPath);
+  }
 
-      errorOk();
-    }
+  // Read the PBP header
+  size_t read = fread(
+    &ASSET.platform.pbpHeader,
+    1,
+    sizeof(assetpbpheader_t),
+    ASSET.platform.pbpFile
+  );
+  if(read != sizeof(assetpbpheader_t)) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to read PBP header", pbpPath);
+  }
+    
+  if(memoryCompare(
+    ASSET.platform.pbpHeader.signature,
+    ASSET_PBP_SIGNATURE,
+    sizeof(ASSET_PBP_SIGNATURE)
+  ) != 0) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Invalid PBP signature in file: %s", pbpPath);
+  }
+
+  // If we seek to the PSAR offset, we can read the WAD file from there.
+  // I'm not sure what PSAR was intended for, but it holds any user data we
+  // want, so I shoved the entire dusk wad there.
+  if(fseek(
+    ASSET.platform.pbpFile, ASSET.platform.pbpHeader.psarOffset, SEEK_SET
+  ) != 0) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to seek to PSAR offset in PBP file: %s", pbpPath);
+  }
+
+  zip_uint64_t zipPsarOffset = (zip_uint64_t)ASSET.platform.pbpHeader.psarOffset;
+  zip_int64_t zipPsarSize = (zip_int64_t)(
+    pbpSize - ASSET.platform.pbpHeader.psarOffset
+  );
+
+  zip_source_t *psarSource = zip_source_filep_create(
+    ASSET.platform.pbpFile,
+    zipPsarOffset,
+    zipPsarSize,
+    NULL
+  );
+  if(psarSource == NULL) {
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to create zip source in PBP file: %s", pbpPath);
+  }
+    
+  ASSET.zip = zip_open_from_source(
+    psarSource,
+    ZIP_RDONLY,
+    NULL
+  );
+  if(ASSET.zip == NULL) {
+    zip_source_free(psarSource);
+    fclose(ASSET.platform.pbpFile);
+    errorThrow("Failed to open zip from PBP file: %s", pbpPath);
+  }
+
+  errorOk();
+}
+
+errorret_t assetDisposePBP(void) {
+  if(ASSET.platform.pbpFile != NULL) {
+    fclose(ASSET.platform.pbpFile);
+    ASSET.platform.pbpFile = NULL;
+  }
+
+  errorOk();
+}

src/duskpsp/asset/assetpbp.h

@@ -6,9 +6,8 @@
  */
 
 #pragma once
-#include "dusk.h"
+#include "error/error.h"
 
-#define ASSET_PBP_READ_PBP_FROM_HOST 0
 #define ASSET_PBP_SIGNATURE_SIZE 4
 #define ASSET_PBP_SIGNATURE "\0PBP"
 
@@ -28,4 +27,19 @@ typedef struct {
 typedef struct {
   FILE *pbpFile;
   assetpbpheader_t pbpHeader;
-} assetpbp_t;
+} assetpbp_t;
+
+/**
+ * Initializes the PBP style asset system.
+ * 
+ * @param pbpPath The file path to the PBP file to read.
+ * @returns An errorret_t indicating success or failure of the operation.
+ */
+errorret_t assetInitPBP(const char_t *pbpPath);
+
+/**
+ * Disposes the PBP style asset system.
+ * 
+ * @returns An errorret_t indicating success or failure of the operation.
+ */
+errorret_t assetDisposePBP(void);

src/duskpsp/asset/assetplatform.h

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "assetpsp.h"
+
+typedef assetpsp_t assetplatform_t;
+#define assetInitPlatform assetInitPSP
+#define assetDisposePlatform assetDisposePSP

src/duskpsp/asset/assetpsp.c

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "asset/asset.h"
+#include "engine/engine.h"
+#include "assert/assert.h"
+#include "util/string.h"
+
+errorret_t assetInitPSP(void) {
+  assertTrue(ENGINE.argc >= 1, "PSP requires launch argument.");
+
+  // PSP is given either the prx OR the PBP file.
+  // In the format of "ms0:/PSP/GAME/DUSK/EBOOT.PBP" or "host0:/Dusk.prx"
+  // IF the file is the PBP file, we are loading directly on the PSP itself.
+  // IF the file is the .prx then we are debugging and fopen will return
+  // relative filepaths correctly, e.g. host0:/dusk.dsk will be on host.
+
+  // Originally I was going to allow host to read the .dsk directly but then
+  // I'd have to maintain two file implementations.
+
+  const char_t *pbpPath;
+  if(stringEndsWithCaseInsensitive(ENGINE.argv[0], ASSET_PSP_EXTENSION_PBP)) {
+    pbpPath = ENGINE.argv[0];
+  } else {
+    // In Debugging this would be next to host0:/Dusk.prx
+    pbpPath = "./EBOOT.PBP";
+  }
+
+  errorChain(assetInitPBP(pbpPath));
+  errorOk();
+}
+
+errorret_t assetDisposePSP(void) {
+  errorChain(assetDisposePBP());
+  errorOk();
+}

src/duskpsp/asset/assetpsp.h

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "assetpbp.h"
+
+#define ASSET_PSP_EXTENSION_PBP ".pbp"
+
+typedef assetpbp_t assetpsp_t;
+
+/**
+ * Initializes the PSP style asset system.
+ * 
+ * @returns An errorret_t indicating success or failure of the operation.
+ */
+errorret_t assetInitPSP(void);
+
+/**
+ * Disposes the PSP style asset system.
+ * 
+ * @returns An errorret_t indicating success or failure of the operation.
+ */
+errorret_t assetDisposePSP(void);

src/duskpsp/debug/debug.c

@@ -5,7 +5,7 @@
  * https://opensource.org/licenses/MIT
  */
 
-#include "psp.h"
+#include "debug/debug.h"
 
 void debugPrint(const char_t *message, ...) {
   FILE *file = fopen("ms0:/PSP/GAME/Dusk/debug.log", "a");

src/duskpsp/display/displayplatform.h

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "display/displaysdl2.h"
+
+typedef displaysdl2_t displayplatform_t;
+
+#define displayPlatformInit displaySDL2Init
+#define displayPlatformUpdate displaySDL2Update
+#define displayPlatformSwap displaySDL2Swap
+#define displayPlatformDispose displaySDL2Dispose

src/duskpsp/duskplatform.h

@@ -10,4 +10,5 @@
 #include <pspdebug.h>
 #include <pspdisplay.h>
 #include <pspctrl.h>
-#include <psphprm.h>
+#include <psphprm.h>
+#include "dusksdl2.h"

src/duskpsp/hello.c

@@ -0,0 +1,41 @@
+#include <pspuser.h>
+#include <pspdebug.h>
+#include <pspdisplay.h>
+
+// PSP_MODULE_INFO is required
+PSP_MODULE_INFO("Hello World", 0, 1, 0);
+PSP_MAIN_THREAD_ATTR(PSP_THREAD_ATTR_USER);
+
+int exit_callback(int arg1, int arg2, void *common) {
+    sceKernelExitGame();
+    return 0;
+}
+
+int callback_thread(SceSize args, void *argp) {
+    int cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
+    sceKernelRegisterExitCallback(cbid);
+    sceKernelSleepThreadCB();
+    return 0;
+}
+
+int setup_callbacks(void) {
+    int thid = sceKernelCreateThread("update_thread", callback_thread, 0x11, 0xFA0, 0, 0);
+    if(thid >= 0)
+        sceKernelStartThread(thid, 0, 0);
+    return thid;
+}
+
+int main(void)  {
+    // Use above functions to make exiting possible
+    setup_callbacks();
+    
+    // Print Hello World! on a debug screen on a loop
+    pspDebugScreenInit();
+    while(1) {
+        pspDebugScreenSetXY(0, 0);
+        pspDebugScreenPrintf("Hello World!");
+        sceDisplayWaitVblankStart();
+    }
+
+    return 0;
+}

src/duskpsp/input/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2026 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_LIBRARY_TARGET_NAME}
+  PUBLIC
+    inputpsp.c
+)

src/duskpsp/input/inputpsp.c

@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "input/input.h"
+
+inputbuttondata_t INPUT_BUTTON_DATA[] = {
+  { .name = "triangle", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_Y } },
+  { .name = "cross", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_A } },
+  { .name = "circle", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_B } },
+  { .name = "square", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_X } },
+  { .name = "start", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_START } },
+  { .name = "select", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_BACK } },
+  { .name = "up", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_DPAD_UP } },
+  { .name = "down", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_DPAD_DOWN } },
+  { .name = "left", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_DPAD_LEFT } },
+  { .name = "right", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_DPAD_RIGHT } },
+  { .name = "l", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_LEFTSHOULDER } },
+  { .name = "r", { .type = INPUT_BUTTON_TYPE_GAMEPAD, .gpButton = SDL_CONTROLLER_BUTTON_RIGHTSHOULDER } },
+
+  { .name = "lstick_down", { .type = INPUT_BUTTON_TYPE_GAMEPAD_AXIS, .gpAxis =  { .axis = SDL_CONTROLLER_AXIS_LEFTX, .positive = true } } },
+  { .name = "lstick_up", { .type = INPUT_BUTTON_TYPE_GAMEPAD_AXIS, .gpAxis =  { .axis = SDL_CONTROLLER_AXIS_LEFTX, .positive = false } } },
+  { .name = "lstick_right", { .type = INPUT_BUTTON_TYPE_GAMEPAD_AXIS, .gpAxis =  { .axis = SDL_CONTROLLER_AXIS_LEFTY, .positive = true } } },
+  { .name = "lstick_left", { .type = INPUT_BUTTON_TYPE_GAMEPAD_AXIS, .gpAxis =  { .axis = SDL_CONTROLLER_AXIS_LEFTY, .positive = false } } },
+
+  { .name = NULL }
+};