Fix displaying the region free splash screen in 576i and 480i

src/utils/ConfigUtils.cpp

@@ -190,9 +190,6 @@ void ConfigUtils::displayMenu() {
     int32_t curRegionIndex = region_map_to_index[curSelectedRegion];
     int32_t curLangIndex   = lang_map_to_index[curSelectedLanguage];
 
-    KPADInit();
-    WPADEnableURCC(true);
-
     while (true) {
         buttonsTriggered = 0;
         buttonsReleased  = 0;
@@ -325,9 +322,6 @@ void ConfigUtils::displayMenu() {
             redraw = false;
         }
     }
-    KPADShutdown();
-    // This disconnects any Pro Controllers...
-    //WPADEnableURCC(false);
 
     DrawUtils::beginDraw();
     DrawUtils::clear(COLOR_BLACK);
@@ -341,6 +335,7 @@ void ConfigUtils::openConfigMenu() {
     uint32_t screen_buf1_size = OSScreenGetBufferSizeEx(SCREEN_DRC);
     void *screenbuffer0       = MEMAllocFromMappedMemoryForGX2Ex(screen_buf0_size, 0x100);
     void *screenbuffer1       = MEMAllocFromMappedMemoryForGX2Ex(screen_buf1_size, 0x100);
+    bool doShutdownKPAD       = false;
 
     if (!screenbuffer0 || !screenbuffer1) {
         DEBUG_FUNCTION_LINE_ERR("Failed to alloc buffers");
@@ -367,8 +362,23 @@ void ConfigUtils::openConfigMenu() {
         goto error_exit;
     }
 
+
+    KPADStatus status;
+    KPADError err;
+    if (KPADReadEx(WPAD_CHAN_0, &status, 0, &err) == 0 && err == KPAD_ERROR_UNINITIALIZED) {
+        doShutdownKPAD = true;
+        KPADInit();
+        WPADEnableURCC(true);
+    }
+
     displayMenu();
 
+    if (doShutdownKPAD) {
+        // This disconnects any Pro Controllers...
+        //WPADEnableURCC(false);
+        KPADShutdown();
+    }
+
     DrawUtils::deinitFont();
 
 error_exit:

src/utils/DrawUtils.cpp

@@ -1,6 +1,8 @@
 #include "DrawUtils.h"
+#include "dc.h"
 #include "logger.h"
 #include "utils.h"
+#include <avm/config.h>
 #include <coreinit/cache.h>
 #include <coreinit/memory.h>
 #include <coreinit/screen.h>
@@ -8,16 +10,17 @@
 #include <png.h>
 
 // buffer width
-#define TV_WIDTH  0x500
 #define DRC_WIDTH 0x380
 
 bool DrawUtils::isBackBuffer;
 
-uint8_t *DrawUtils::tvBuffer  = nullptr;
-uint32_t DrawUtils::tvSize    = 0;
-uint8_t *DrawUtils::drcBuffer = nullptr;
-uint32_t DrawUtils::drcSize   = 0;
-static SFT pFont              = {};
+uint8_t *DrawUtils::tvBuffer    = nullptr;
+uint32_t DrawUtils::tvSize      = 0;
+uint8_t *DrawUtils::drcBuffer   = nullptr;
+uint32_t DrawUtils::drcSize     = 0;
+uint32_t DrawUtils::usedTVWidth = 0;
+float DrawUtils::usedTVScale    = 1.5f;
+static SFT pFont                = {};
 
 static Color font_col(0xFFFFFFFF);
 
@@ -26,6 +29,75 @@ void DrawUtils::initBuffers(void *tvBuffer_, uint32_t tvSize_, void *drcBuffer_,
     DrawUtils::tvSize    = tvSize_;
     DrawUtils::drcBuffer = (uint8_t *) drcBuffer_;
     DrawUtils::drcSize   = drcSize_;
+
+    bool bigScale = true;
+    switch (TVEGetCurrentPort()) {
+        case TVE_PORT_HDMI:
+            bigScale = true;
+            break;
+        case TVE_PORT_COMPONENT:
+        case TVE_PORT_COMPOSITE:
+        case TVE_PORT_SCART:
+            bigScale = false;
+            break;
+    }
+
+    AVMTvResolution tvResolution = AVM_TV_RESOLUTION_720P;
+    if (AVMGetTVScanMode(&tvResolution)) {
+        switch (tvResolution) {
+            case AVM_TV_RESOLUTION_480P:
+            case AVM_TV_RESOLUTION_720P:
+            case AVM_TV_RESOLUTION_720P_3D:
+            case AVM_TV_RESOLUTION_1080I:
+            case AVM_TV_RESOLUTION_1080P:
+            case AVM_TV_RESOLUTION_576P:
+            case AVM_TV_RESOLUTION_720P_50HZ:
+            case AVM_TV_RESOLUTION_1080I_50HZ:
+            case AVM_TV_RESOLUTION_1080P_50HZ:
+                bigScale = true;
+                break;
+            case AVM_TV_RESOLUTION_576I:
+            case AVM_TV_RESOLUTION_480I:
+            case AVM_TV_RESOLUTION_480I_PAL60:
+                break;
+        }
+    }
+
+    auto tvScanBufferWidth = DCReadReg32(SCREEN_TV, D1GRPH_X_END_REG);
+
+    if (tvScanBufferWidth == 640) { // 480i/480p/576i 4:3
+        DrawUtils::usedTVWidth = 640;
+        SetDCPitchReg(SCREEN_TV, 640);
+        DrawUtils::usedTVScale = bigScale ? 0.75 : 0.75f;
+    } else if (tvScanBufferWidth == 854) { // 480i/480p/576i 16:9
+        DrawUtils::usedTVWidth = 896;
+        SetDCPitchReg(SCREEN_TV, 896);
+        DrawUtils::usedTVScale = bigScale ? 1.0 : 1.0f;
+    } else if (tvScanBufferWidth == 1280) { // 720p 16:9
+        DrawUtils::usedTVWidth = 1280;
+        SetDCPitchReg(SCREEN_TV, 1280);
+        if (bigScale) {
+            DrawUtils::usedTVScale = 1.5;
+        } else {
+            DrawUtils::usedTVScale = 0.75f;
+            if (tvResolution == AVM_TV_RESOLUTION_480I_PAL60 || tvResolution == AVM_TV_RESOLUTION_480I) {
+                AVMTvAspectRatio tvAspectRatio;
+                if (AVMGetTVAspectRatio(&tvAspectRatio) && tvAspectRatio == AVM_TV_ASPECT_RATIO_16_9) {
+                    DEBUG_FUNCTION_LINE_WARN("force big scaling for 480i + 16:9");
+                    DrawUtils::usedTVScale = 1.5;
+                }
+            }
+        }
+    } else if (tvScanBufferWidth == 1920) { // 1080i/1080p 16:9
+        DrawUtils::usedTVWidth = 1920;
+        SetDCPitchReg(SCREEN_TV, 1920);
+        DrawUtils::usedTVScale = bigScale ? 2.25 : 1.125f;
+    } else {
+        DrawUtils::usedTVWidth = tvScanBufferWidth;
+        SetDCPitchReg(SCREEN_TV, tvScanBufferWidth);
+        DrawUtils::usedTVScale = 1.0f;
+        DEBUG_FUNCTION_LINE_WARN("Unknown tv width detected, config menu might not show properly");
+    }
 }
 
 void DrawUtils::beginDraw() {
@@ -77,17 +149,10 @@ void DrawUtils::drawPixel(uint32_t x, uint32_t y, uint8_t r, uint8_t g, uint8_t
         }
     }
 
-    uint32_t USED_TV_WIDTH = TV_WIDTH;
-    float scale            = 1.5f;
-    if (DrawUtils::tvSize == 0x00FD2000) {
-        USED_TV_WIDTH = 1920;
-        scale         = 2.25f;
-    }
-
     // scale and put pixel in the tv buffer
-    for (uint32_t yy = (y * scale); yy < ((y * scale) + (uint32_t) scale); yy++) {
-        for (uint32_t xx = (x * scale); xx < ((x * scale) + (uint32_t) scale); xx++) {
-            uint32_t i = (xx + yy * USED_TV_WIDTH) * 4;
+    for (uint32_t yy = (y * DrawUtils::usedTVScale); yy < ((y * DrawUtils::usedTVScale) + (uint32_t) DrawUtils::usedTVScale); yy++) {
+        for (uint32_t xx = (x * DrawUtils::usedTVScale); xx < ((x * DrawUtils::usedTVScale) + (uint32_t) DrawUtils::usedTVScale); xx++) {
+            uint32_t i = (xx + yy * DrawUtils::usedTVWidth) * 4;
             if (i + 3 < tvSize / 2) {
                 if (isBackBuffer) {
                     i += tvSize / 2;

src/utils/DrawUtils.h

@@ -73,4 +73,6 @@ private:
     static uint32_t tvSize;
     static uint8_t *drcBuffer;
     static uint32_t drcSize;
+    static uint32_t usedTVWidth;
+    static float usedTVScale;
 };

src/utils/dc.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <coreinit/debug.h>
+#include <coreinit/screen.h>
+
+extern "C" uint32_t __OSPhysicalToEffectiveUncached(uint32_t);
+
+static inline uint32_t DCReadReg32(OSScreenID screen, uint32_t index) {
+    if (OSIsECOMode()) {
+        return 0;
+    }
+    auto regs = (uint32_t *) __OSPhysicalToEffectiveUncached(0xc200000);
+    return regs[index + (screen * 0x200)];
+}
+
+static inline void DCWriteReg32(OSScreenID screen, uint32_t index, uint32_t val) {
+    if (OSIsECOMode()) {
+        return;
+    }
+    auto regs                      = (uint32_t *) __OSPhysicalToEffectiveUncached(0xc200000);
+    regs[index + (screen * 0x200)] = val;
+}
+
+//  https://www.x.org/docs/AMD/old/42589_rv630_rrg_1.01o.pdf (reg id in document / 4)
+#define D1GRPH_ENABLE_REG  0x1840
+#define D1GRPH_CONTROL_REG 0x1841
+#define D1GRPH_PITCH_REG   0x1848
+#define D1OVL_PITCH_REG    0x1866
+#define D1GRPH_X_END_REG   0x184d
+#define D1GRPH_Y_END_REG   0x184e
+
+static inline void SetDCPitchReg(OSScreenID screen, uint16_t pitch) {
+    DCWriteReg32(screen, D1GRPH_PITCH_REG, pitch);
+    DCWriteReg32(screen, D1OVL_PITCH_REG, pitch);
+}