pacc: add viewport

4 files changed, 21 insertions, 2 deletions

diff --git a/pacc/pacc-gl-procs.inc b/pacc/pacc-gl-procs.inc
index cd991e0..1984273 100644
--- a/pacc/pacc-gl-procs.inc
+++ b/pacc/pacc-gl-procs.inc
@@ -9,6 +9,7 @@ PROC(GENTEXTURES, GenTextures)
 PROC(TEXPARAMETERI, TexParameteri)
 PROC(PIXELSTOREI, PixelStorei)
 PROC(DRAWARRAYS, DrawArrays)
+PROC(VIEWPORT, Viewport)
 #endif // PROC_NO_GL_1_1
 PROC(ACTIVETEXTURE, ActiveTexture)
 #endif // PROC_NO_GL_1_3
diff --git a/pacc/pacc-gl.c b/pacc/pacc-gl.c
index e1463b8..ada045e 100644
--- a/pacc/pacc-gl.c
+++ b/pacc/pacc-gl.c
@@ -468,6 +468,10 @@ err:
   return 0;
 }
 
+static void pacc_viewport_scale(struct pacc_ctx *pc, int scale) {
+  glViewport(0, 0, pc->w*scale, pc->h*scale);
+}
+
 static struct pacc_vtable pacc_gl_vtable = {
   .pacc_delete = pacc_delete,
   .gen_buf = pacc_gen_buf,
@@ -485,6 +489,7 @@ static struct pacc_vtable pacc_gl_vtable = {
   .color = pacc_color,
   .begin_clear = pacc_begin_clear,
   .draw = pacc_draw,
+  .viewport_scale = pacc_viewport_scale,
 };
 
 struct pacc_ctx *pacc_init_gl(int w, int h, struct pacc_vtable *vt) {
diff --git a/pacc/pacc.h b/pacc/pacc.h
index b3387ac..30e7ab2 100644
--- a/pacc/pacc.h
+++ b/pacc/pacc.h
@@ -46,6 +46,7 @@ struct pacc_vtable {
   void (*color)(struct pacc_ctx *ctx, uint8_t pal);
   void (*begin_clear)(struct pacc_ctx *ctx);
   void (*draw)(struct pacc_ctx *ctx, struct pacc_buf *buf, enum pacc_mode mode);
+  void (*viewport_scale)(struct pacc_ctx *ctx, int scale);
 };
 
 struct pacc_ctx *pacc_init_gl(int w, int h, struct pacc_vtable *vt);
diff --git a/sdl/main.c b/sdl/main.c
index 39ead1b..e46a660 100644
--- a/sdl/main.c
+++ b/sdl/main.c
@@ -31,8 +31,10 @@ static struct {
   char adpcmram[OPNA_ADPCM_RAM_SIZE];
   struct fmdsp_pacc *fp;
   atomic_flag fftdata_flag;
+  int scale;
 } g = {
   .fftdata_flag = ATOMIC_FLAG_INIT,
+  .scale = 1,
 };
 
 static void audiocb(void *ptr, Uint8 *bufptr, int len) {
@@ -116,7 +118,7 @@ int main(int argc, char **argv) {
   g.win = SDL_CreateWindow(
       "FMPlayer SDL",
       SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
-      640*2, 400*2,
+      PC98_W, PC98_H,
       SDL_WINDOW_OPENGL);
   if (!g.win) {
     SDL_Log("Cannot create window\n");
@@ -170,7 +172,8 @@ int main(int argc, char **argv) {
         SDL_free(e.drop.file);
         break;
       case SDL_KEYDOWN:
-        if (e.key.keysym.scancode == SDL_SCANCODE_F11) {
+        switch (e.key.keysym.scancode) {
+        case SDL_SCANCODE_F11:
           if (e.key.keysym.mod & KMOD_SHIFT) {
             fmdsp_pacc_set_right_mode(
                 g.fp,
@@ -180,6 +183,15 @@ int main(int argc, char **argv) {
                 g.fp,
                 (fmdsp_pacc_left_mode(g.fp) + 1) % FMDSP_LEFT_MODE_CNT);
           }
+          break;
+        case SDL_SCANCODE_F12:
+          g.scale++;
+          if (g.scale > 3) g.scale = 1;
+          SDL_SetWindowSize(g.win, PC98_W*g.scale, PC98_H*g.scale);
+          pacc.viewport_scale(pc, g.scale);
+          break;
+        default:
+          break;
         }
         if (e.key.keysym.mod & KMOD_CTRL) {
           switch (e.key.keysym.scancode) {