shithub: psxe

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Add `get_vram` API, fix 368 resolution

--- a/frontend/screen.c

+++ b/frontend/screen.c

@@ -95,7 +95,8 @@

 }

 void psxe_screen_update(psxe_screen_t* screen) {

-    void* display_buf = psx_get_display_buffer(screen->psx);

+    void* display_buf = screen->debug_mode ?

+        psx_get_vram(screen->psx) : psx_get_display_buffer(screen->psx);

     SDL_UpdateTexture(screen->texture, NULL, display_buf, PSX_GPU_FB_STRIDE);

     SDL_RenderCopy(screen->renderer, screen->texture, NULL, NULL);

--- a/psx/dev/cdrom.c

+++ b/psx/dev/cdrom.c

@@ -297,8 +297,7 @@

                 return;

             }

-            PFIFO_POP;

-            PFIFO_POP;

+            cdrom->pfifo_index = 0;

             cdrom->irq_delay = DELAY_1MS;

             cdrom->delayed_command = CDL_SETFILTER;

--- a/psx/dev/gpu.c

+++ b/psx/dev/gpu.c

@@ -944,6 +944,14 @@

             switch (cmd) {

                 case 0x04: {

                 } break;

+                case 0x05: {

+                    gpu->disp_x = value & 0x3ff;

+                    gpu->disp_y = (value >> 10) & 0x1ff;

+                } break;

+                case 0x06: {

+                    gpu->disp_x1 = value & 0xfff;

+                    gpu->disp_x2 = (value >> 12) & 0xfff;

+                } break;

                 case 0x08:

                     gpu->display_mode = value & 0xffffff;

--- a/psx/dev/gpu.h

+++ b/psx/dev/gpu.h

@@ -107,6 +107,8 @@

     // Display area

     uint32_t disp_x, disp_y;

+    uint32_t disp_x1, disp_x2;

+    uint32_t disp_y1, disp_y2;

     // Timing and IRQs

     float cycles;

--- a/psx/psx.c

+++ b/psx/psx.c

@@ -48,12 +48,20 @@

     return psx_gpu_get_display_buffer(psx->gpu);

 }

+void* psx_get_vram(psx_t* psx) {

+    return psx->gpu->vram;

+}

+

 uint32_t psx_get_display_width(psx_t* psx) {

     static int dmode_hres_table[] = {

         256, 320, 512, 640

     };

-    return dmode_hres_table[psx->gpu->display_mode & 0x3];

+    if (psx->gpu->display_mode & 0x40) {

+        return 368;

+    } else {

+        return dmode_hres_table[psx->gpu->display_mode & 0x3];

+    }

 }

 uint32_t psx_get_display_height(psx_t* psx) {

--- a/psx/psx.h

+++ b/psx/psx.h

@@ -37,6 +37,7 @@

 void psx_update(psx_t*);

 void psx_run_frame(psx_t*);

 void* psx_get_display_buffer(psx_t*);

+void* psx_get_vram(psx_t*);

 uint32_t psx_get_display_width(psx_t*);

 uint32_t psx_get_display_height(psx_t*);

 uint32_t psx_get_display_format(psx_t*);

-- 

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