X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=blobdiff_plain;f=plugins%2Fgpu_neon%2Fpsx_gpu%2Fpsx_gpu_parse.c;h=67da86ea289f759487393a8f62b5c1571b089042;hp=d3616bdad823f7821e0ed429cdb402f81fecbb46;hb=77e34391a6b3c8ae59768a941037451b7c81169f;hpb=f1359c5758c2e745b1cbec63e21445fa65f7cafe

diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu_parse.c b/plugins/gpu_neon/psx_gpu/psx_gpu_parse.c
index d3616bda..67da86ea 100644
--- a/plugins/gpu_neon/psx_gpu/psx_gpu_parse.c
+++ b/plugins/gpu_neon/psx_gpu/psx_gpu_parse.c
@@ -92,6 +92,7 @@ void update_texture_ptr(psx_gpu_struct *psx_gpu)
 
 void set_texture(psx_gpu_struct *psx_gpu, u32 texture_settings)
 {
+  texture_settings &= 0x1FF;
   if(psx_gpu->texture_settings != texture_settings)
   {
     u32 new_texture_page = texture_settings & 0x1F;
@@ -407,7 +408,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
         vertexes[1].x = list_s16[4] + psx_gpu->offset_x;
         vertexes[1].y = list_s16[5] + psx_gpu->offset_y;
 
-        render_line(psx_gpu, vertexes, current_command, list[0]);
+        render_line(psx_gpu, vertexes, current_command, list[0], 0);
   			break;
       }
   
@@ -428,7 +429,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
           vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
           vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
 
-          render_line(psx_gpu, vertexes, current_command, list[0]);
+          render_line(psx_gpu, vertexes, current_command, list[0], 0);
 
           list_position++;
           num_vertexes++;
@@ -459,7 +460,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
         vertexes[1].x = list_s16[6] + psx_gpu->offset_x;
         vertexes[1].y = list_s16[7] + psx_gpu->offset_y;
 
-        render_line(psx_gpu, vertexes, current_command, 0);
+        render_line(psx_gpu, vertexes, current_command, 0, 0);
   			break;
       }
  
@@ -489,7 +490,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
           vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
           vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
 
-          render_line(psx_gpu, vertexes, current_command, 0);
+          render_line(psx_gpu, vertexes, current_command, 0, 0);
 
           list_position += 2;
           num_vertexes++;
@@ -600,12 +601,22 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
   			break;
       }
   
-  		case 0x80:          //  vid -> vid
-        render_block_move(psx_gpu, list_s16[2] & 0x3FF, list_s16[3] & 0x1FF,
-         list_s16[4] & 0x3FF, list_s16[5] & 0x1FF,
-         ((list_s16[6] - 1) & 0x3FF) + 1, ((list_s16[7] - 1) & 0x1FF) + 1);
-  			break;
- 
+      case 0x80:          //  vid -> vid
+      {
+        u32 sx = list_s16[2] & 0x3FF;
+        u32 sy = list_s16[3] & 0x1FF;
+        u32 dx = list_s16[4] & 0x3FF;
+        u32 dy = list_s16[5] & 0x1FF;
+        u32 w = ((list_s16[6] - 1) & 0x3FF) + 1;
+        u32 h = ((list_s16[7] - 1) & 0x1FF) + 1;
+
+        if (sx == dx && sy == dy && psx_gpu->mask_msb == 0)
+          break;
+
+        render_block_move(psx_gpu, sx, sy, dx, dy, w, h);
+        break;
+      } 
+
 #ifdef PCSX
   		case 0xA0:          //  sys -> vid
   		case 0xC0:          //  vid -> sys
@@ -634,7 +645,7 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
 #endif
 
   		case 0xE1:
-        set_texture(psx_gpu, list[0] & 0x1FF);
+        set_texture(psx_gpu, list[0]);
 
         if(list[0] & (1 << 9))
           psx_gpu->render_state_base |= RENDER_STATE_DITHER;
@@ -677,11 +688,21 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
         }
         SET_Ex(2, list[0]);
         break;
-  		}
+      }
+
+      case 0xE3:
+      {
+        s16 viewport_start_x = list[0] & 0x3FF;
+        s16 viewport_start_y = (list[0] >> 10) & 0x1FF;
+
+        if(viewport_start_x == psx_gpu->viewport_start_x &&
+         viewport_start_y == psx_gpu->viewport_start_y)
+        {
+          break;
+        }
   
-  		case 0xE3:
-        psx_gpu->viewport_start_x = list[0] & 0x3FF;
-        psx_gpu->viewport_start_y = (list[0] >> 10) & 0x1FF;
+        psx_gpu->viewport_start_x = viewport_start_x;
+        psx_gpu->viewport_start_y = viewport_start_y;
 
 #ifdef TEXTURE_CACHE_4BPP
         psx_gpu->viewport_mask =
@@ -689,12 +710,23 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
          psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
          psx_gpu->viewport_end_y);
 #endif
-  			SET_Ex(3, list[0]);
-  			break;
-  
-  		case 0xE4:
-        psx_gpu->viewport_end_x = list[0] & 0x3FF;
-        psx_gpu->viewport_end_y = (list[0] >> 10) & 0x1FF;
+        SET_Ex(3, list[0]);
+        break;
+      }
+
+      case 0xE4:
+      {
+        s16 viewport_end_x = list[0] & 0x3FF;
+        s16 viewport_end_y = (list[0] >> 10) & 0x1FF;
+
+        if(viewport_end_x == psx_gpu->viewport_end_x &&
+         viewport_end_y == psx_gpu->viewport_end_y)
+        {
+          break;
+        }
+
+        psx_gpu->viewport_end_x = viewport_end_x;
+        psx_gpu->viewport_end_y = viewport_end_y;
 
 #ifdef TEXTURE_CACHE_4BPP
         psx_gpu->viewport_mask =
@@ -702,10 +734,11 @@ u32 gpu_parse(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
          psx_gpu->viewport_start_y, psx_gpu->viewport_end_x,
          psx_gpu->viewport_end_y);
 #endif
-  			SET_Ex(4, list[0]);
-  			break;
+        SET_Ex(4, list[0]);
+        break;
+      }
   
-  		case 0xE5:
+      case 0xE5:
       {
         s32 offset_x = list[0] << 21;
         s32 offset_y = list[0] << 10;
@@ -749,22 +782,61 @@ breakloop:
   return list - list_start;
 }
 
+#ifdef PCSX
+
+#define ENH_BUF_TABLE_STEP (1024 / sizeof(psx_gpu->enhancement_buf_by_x16))
+
+static void update_enhancement_buf_table_from_hres(psx_gpu_struct *psx_gpu)
+{
+  u32 b, x, s;
+
+  b = 0;
+  s = psx_gpu->enhancement_x_threshold;
+  for (x = 0; x < sizeof(psx_gpu->enhancement_buf_by_x16); x++)
+  {
+    if (b < 3 && x * ENH_BUF_TABLE_STEP >= s - ENH_BUF_TABLE_STEP - 1)
+    {
+      s += psx_gpu->enhancement_x_threshold;
+      b++;
+    }
+    psx_gpu->enhancement_buf_by_x16[x] = b;
+  }
+}
+
+static void update_enhancement_buf_table_from_x(psx_gpu_struct *psx_gpu,
+ u32 x0, u32 len)
+{
+  u32 x, b;
+
+  for (x = x0, b = 0; x >= len; b++)
+    x -= len;
+  if (b > 3)
+    b = 3;
+
+  memset(psx_gpu->enhancement_buf_by_x16 + x0 / ENH_BUF_TABLE_STEP,
+   b, (len + ENH_BUF_TABLE_STEP - 1) / ENH_BUF_TABLE_STEP);
+}
+
+#define select_enhancement_buf(psx_gpu) \
+  psx_gpu->enhancement_current_buf_ptr = \
+    select_enhancement_buf_ptr(psx_gpu, psx_gpu->saved_viewport_start_x)
+
 #define enhancement_disable() { \
   psx_gpu->vram_out_ptr = psx_gpu->vram_ptr; \
   psx_gpu->viewport_start_x = psx_gpu->saved_viewport_start_x; \
   psx_gpu->viewport_start_y = psx_gpu->saved_viewport_start_y; \
   psx_gpu->viewport_end_x = psx_gpu->saved_viewport_end_x; \
   psx_gpu->viewport_end_y = psx_gpu->saved_viewport_end_y; \
-  psx_gpu->render_mode &= ~RENDER_DOUBLE_MODE; \
+  psx_gpu->uvrgb_phase = 0x8000; \
 }
 
 #define enhancement_enable() { \
-  psx_gpu->vram_out_ptr = psx_gpu->enhancement_buf_ptr; \
+  psx_gpu->vram_out_ptr = psx_gpu->enhancement_current_buf_ptr; \
   psx_gpu->viewport_start_x = psx_gpu->saved_viewport_start_x * 2; \
   psx_gpu->viewport_start_y = psx_gpu->saved_viewport_start_y * 2; \
-  psx_gpu->viewport_end_x = psx_gpu->saved_viewport_end_x * 2; \
-  psx_gpu->viewport_end_y = psx_gpu->saved_viewport_end_y * 2; \
-  psx_gpu->render_mode |= RENDER_DOUBLE_MODE; \
+  psx_gpu->viewport_end_x = psx_gpu->saved_viewport_end_x * 2 + 1; \
+  psx_gpu->viewport_end_y = psx_gpu->saved_viewport_end_y * 2 + 1; \
+  psx_gpu->uvrgb_phase = 0x1000; \
 }
 
 #define shift_vertices3(v) { \
@@ -788,6 +860,13 @@ breakloop:
 #define shift_triangle_area() \
   psx_gpu->triangle_area *= 4
 
+extern void scale2x_tiles8(void *dst, const void *src, int w8, int h);
+
+#ifndef NEON_BUILD
+// TODO?
+void scale2x_tiles8(void *dst, const void *src, int w8, int h) {}
+#endif
+
 static int disable_main_render;
 
 static void do_triangle_enhanced(psx_gpu_struct *psx_gpu,
@@ -834,7 +913,85 @@ static void do_quad_enhanced(psx_gpu_struct *psx_gpu, vertex_struct *vertexes,
   }
 }
 
-u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_command)
+#if 0
+
+#define fill_vertex(i, x_, y_, u_, v_, rgb_) \
+  vertexes[i].x = x_; \
+  vertexes[i].y = y_; \
+  vertexes[i].u = u_; \
+  vertexes[i].v = v_; \
+  vertexes[i].r = rgb_; \
+  vertexes[i].g = (rgb_) >> 8; \
+  vertexes[i].b = (rgb_) >> 16
+
+static void do_sprite_enhanced(psx_gpu_struct *psx_gpu, int x, int y,
+ u32 u, u32 v, u32 w, u32 h, u32 cmd_rgb)
+{
+  vertex_struct *vertex_ptrs[3];
+  u32 flags = (cmd_rgb >> 24);
+  u32 color = cmd_rgb & 0xffffff;
+  u32 render_state_base_saved = psx_gpu->render_state_base;
+  int x1, y1;
+  u8 u1, v1;
+
+  flags &=
+   (RENDER_FLAGS_MODULATE_TEXELS | RENDER_FLAGS_BLEND |
+   RENDER_FLAGS_TEXTURE_MAP);
+
+  set_triangle_color(psx_gpu, color);
+  if(color == 0x808080)
+    flags |= RENDER_FLAGS_MODULATE_TEXELS;
+
+  psx_gpu->render_state_base &= ~RENDER_STATE_DITHER;
+  enhancement_enable();
+
+  x1 = x + w;
+  y1 = y + h;
+  u1 = u + w;
+  v1 = v + h;
+  // FIXME..
+  if (u1 < u) u1 = 0xff;
+  if (v1 < v) v1 = 0xff;
+
+  // 0-2
+  // |/
+  // 1
+  fill_vertex(0, x,  y,  u,  v,  color);
+  fill_vertex(1, x,  y1, u,  v1, color);
+  fill_vertex(2, x1, y,  u1, v,  color);
+  if (prepare_triangle(psx_gpu, vertexes, vertex_ptrs)) {
+    shift_vertices3(vertex_ptrs);
+    shift_triangle_area();
+    render_triangle_p(psx_gpu, vertex_ptrs, flags);
+  }
+
+  //   0
+  //  /|
+  // 1-2
+  fill_vertex(0, x1, y,  u1, v,  color);
+  fill_vertex(1, x,  y1, u,  v1, color);
+  fill_vertex(2, x1, y1, u1, v1, color);
+  if (prepare_triangle(psx_gpu, vertexes, vertex_ptrs)) {
+    shift_vertices3(vertex_ptrs);
+    shift_triangle_area();
+    render_triangle_p(psx_gpu, vertex_ptrs, flags);
+  }
+
+  psx_gpu->render_state_base = render_state_base_saved;
+}
+#else
+static void do_sprite_enhanced(psx_gpu_struct *psx_gpu, int x, int y,
+ u32 u, u32 v, u32 w, u32 h, u32 cmd_rgb)
+{
+  u32 flags = (cmd_rgb >> 24);
+  u32 color = cmd_rgb & 0xffffff;
+
+  render_sprite_4x(psx_gpu, x, y, u, v, w, h, flags, color);
+}
+#endif
+
+u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size,
+ u32 *last_command)
 {
   u32 current_command = 0, command_length;
 
@@ -845,6 +1002,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
   psx_gpu->saved_viewport_start_y = psx_gpu->viewport_start_y;
   psx_gpu->saved_viewport_end_x = psx_gpu->viewport_end_x;
   psx_gpu->saved_viewport_end_y = psx_gpu->viewport_end_y;
+  select_enhancement_buf(psx_gpu);
 
   for(; list < list_end; list += 1 + command_length)
   {
@@ -876,7 +1034,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
 
         do_fill(psx_gpu, x, y, width, height, color);
 
-        psx_gpu->vram_out_ptr = psx_gpu->enhancement_buf_ptr;
+        psx_gpu->vram_out_ptr = select_enhancement_buf_ptr(psx_gpu, x);
         x *= 2;
         y *= 2;
         width *= 2;
@@ -1003,7 +1161,9 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         vertexes[1].x = list_s16[4] + psx_gpu->offset_x;
         vertexes[1].y = list_s16[5] + psx_gpu->offset_y;
 
-        render_line(psx_gpu, vertexes, current_command, list[0]);
+        render_line(psx_gpu, vertexes, current_command, list[0], 0);
+        enhancement_enable();
+        render_line(psx_gpu, vertexes, current_command, list[0], 1);
         break;
       }
   
@@ -1024,7 +1184,10 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
           vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
           vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
 
-          render_line(psx_gpu, vertexes, current_command, list[0]);
+          enhancement_disable();
+          render_line(psx_gpu, vertexes, current_command, list[0], 0);
+          enhancement_enable();
+          render_line(psx_gpu, vertexes, current_command, list[0], 1);
 
           list_position++;
           num_vertexes++;
@@ -1055,7 +1218,9 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         vertexes[1].x = list_s16[6] + psx_gpu->offset_x;
         vertexes[1].y = list_s16[7] + psx_gpu->offset_y;
 
-        render_line(psx_gpu, vertexes, current_command, 0);
+        render_line(psx_gpu, vertexes, current_command, 0, 0);
+        enhancement_enable();
+        render_line(psx_gpu, vertexes, current_command, 0, 1);
         break;
       }
  
@@ -1085,7 +1250,10 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
           vertexes[1].x = (xy & 0xFFFF) + psx_gpu->offset_x;
           vertexes[1].y = (xy >> 16) + psx_gpu->offset_y;
 
-          render_line(psx_gpu, vertexes, current_command, 0);
+          enhancement_disable();
+          render_line(psx_gpu, vertexes, current_command, 0, 0);
+          enhancement_enable();
+          render_line(psx_gpu, vertexes, current_command, 0, 1);
 
           list_position += 2;
           num_vertexes++;
@@ -1110,6 +1278,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         u32 height = list_s16[5] & 0x1FF;
 
         render_sprite(psx_gpu, x, y, 0, 0, width, height, current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, 0, 0, width, height, list[0]);
         break;
       }
   
@@ -1117,14 +1286,16 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
       {        
         u32 x = sign_extend_11bit(list_s16[2] + psx_gpu->offset_x);
         u32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
-        u32 uv = list_s16[4];
+        u8 u = list_s16[4];
+        u8 v = list_s16[4] >> 8;
         u32 width = list_s16[6] & 0x3FF;
         u32 height = list_s16[7] & 0x1FF;
 
         set_clut(psx_gpu, list_s16[5]);
 
-        render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, width, height,
+        render_sprite(psx_gpu, x, y, u, v, width, height,
          current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, u, v, width, height, list[0]);
         break;
       }
   
@@ -1137,6 +1308,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         s32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
 
         render_sprite(psx_gpu, x, y, 0, 0, 1, 1, current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, 0, 0, 1, 1, list[0]);
         break;
       }
   
@@ -1149,6 +1321,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         s32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
 
         render_sprite(psx_gpu, x, y, 0, 0, 8, 8, current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, 0, 0, 8, 8, list[0]);
         break;
       }
   
@@ -1159,12 +1332,14 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
       {        
         s32 x = sign_extend_11bit(list_s16[2] + psx_gpu->offset_x);
         s32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
-        u32 uv = list_s16[4];
+        u8 u = list_s16[4];
+        u8 v = list_s16[4] >> 8;
 
         set_clut(psx_gpu, list_s16[5]);
 
-        render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 8, 8,
+        render_sprite(psx_gpu, x, y, u, v, 8, 8,
          current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, u, v, 8, 8, list[0]);
         break;
       }
   
@@ -1177,6 +1352,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
         s32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
 
         render_sprite(psx_gpu, x, y, 0, 0, 16, 16, current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, 0, 0, 16, 16, list[0]);
         break;
       }
   
@@ -1187,50 +1363,48 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
       {        
         s32 x = sign_extend_11bit(list_s16[2] + psx_gpu->offset_x);
         s32 y = sign_extend_11bit(list_s16[3] + psx_gpu->offset_y);
-        u32 uv = list_s16[4];
+        u8 u = list_s16[4];
+        u8 v = list_s16[4] >> 8;
 
         set_clut(psx_gpu, list_s16[5]);
 
-        render_sprite(psx_gpu, x, y, uv & 0xFF, (uv >> 8) & 0xFF, 16, 16,
-         current_command, list[0]);
+        render_sprite(psx_gpu, x, y, u, v, 16, 16, current_command, list[0]);
+        do_sprite_enhanced(psx_gpu, x, y, u, v, 16, 16, list[0]);
         break;
       }
   
       case 0x80:          //  vid -> vid
-        render_block_move(psx_gpu, list_s16[2] & 0x3FF, list_s16[3] & 0x1FF,
-         list_s16[4] & 0x3FF, list_s16[5] & 0x1FF,
-         ((list_s16[6] - 1) & 0x3FF) + 1, ((list_s16[7] - 1) & 0x1FF) + 1);
+      {
+        u32 sx = list_s16[2] & 0x3FF;
+        u32 sy = list_s16[3] & 0x1FF;
+        u32 dx = list_s16[4] & 0x3FF;
+        u32 dy = list_s16[5] & 0x1FF;
+        u32 w = ((list_s16[6] - 1) & 0x3FF) + 1;
+        u32 h = ((list_s16[7] - 1) & 0x1FF) + 1;
+        u16 *buf;
+
+        if (sx == dx && sy == dy && psx_gpu->mask_msb == 0)
+          break;
+
+        render_block_move(psx_gpu, sx, sy, dx, dy, w, h);
+        if (dy + h > 512)
+          h = 512 - dy;
+        sx = sx & ~7; // FIXME?
+        dx = dx * 2 & ~7;
+        dy *= 2;
+        w = (w + 7) / 8;
+        buf = select_enhancement_buf_ptr(psx_gpu, dx / 2);
+        scale2x_tiles8(buf + dy * 1024 + dx,
+          psx_gpu->vram_ptr + sy * 1024 + sx, w, h);
         break;
+      }
  
-#ifdef PCSX
       case 0xA0:          //  sys -> vid
       case 0xC0:          //  vid -> sys
         goto breakloop;
-#else
-      case 0xA0:          //  sys -> vid
-      {
-        u32 load_x = list_s16[2] & 0x3FF;
-        u32 load_y = list_s16[3] & 0x1FF;
-        u32 load_width = list_s16[4] & 0x3FF;
-        u32 load_height = list_s16[5] & 0x1FF;
-        u32 load_size = load_width * load_height;
-  
-        command_length += load_size / 2;
-
-        if(load_size & 1)
-          command_length++;
-
-        render_block_copy(psx_gpu, (u16 *)&(list_s16[6]), load_x, load_y,
-         load_width, load_height, load_width);
-        break;
-      }
-
-      case 0xC0:          //  vid -> sys
-        break;
-#endif
 
       case 0xE1:
-        set_texture(psx_gpu, list[0] & 0x1FF);
+        set_texture(psx_gpu, list[0]);
 
         if(list[0] & (1 << 9))
           psx_gpu->render_state_base |= RENDER_STATE_DITHER;
@@ -1276,10 +1450,28 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
       }
   
       case 0xE3:
-        psx_gpu->viewport_start_x = list[0] & 0x3FF;
-        psx_gpu->viewport_start_y = (list[0] >> 10) & 0x1FF;
-        psx_gpu->saved_viewport_start_x = psx_gpu->viewport_start_x;
-        psx_gpu->saved_viewport_start_y = psx_gpu->viewport_start_y;
+      {
+        s16 viewport_start_x = list[0] & 0x3FF;
+        s16 viewport_start_y = (list[0] >> 10) & 0x1FF;
+        u32 d;
+
+        if(viewport_start_x == psx_gpu->viewport_start_x &&
+         viewport_start_y == psx_gpu->viewport_start_y)
+        {
+          break;
+        }
+        psx_gpu->viewport_start_x = viewport_start_x;
+        psx_gpu->viewport_start_y = viewport_start_y;
+        psx_gpu->saved_viewport_start_x = viewport_start_x;
+        psx_gpu->saved_viewport_start_y = viewport_start_y;
+
+        d = (u32)psx_gpu->viewport_end_x - (u32)viewport_start_x + 1;
+        if((u32)psx_gpu->enhancement_x_threshold - d <= 16)
+        {
+          update_enhancement_buf_table_from_x(psx_gpu,
+           viewport_start_x, d);
+        }
+        select_enhancement_buf(psx_gpu);
 
 #ifdef TEXTURE_CACHE_4BPP
         psx_gpu->viewport_mask =
@@ -1289,12 +1481,32 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
 #endif
         SET_Ex(3, list[0]);
         break;
-  
+      }
+
       case 0xE4:
-        psx_gpu->viewport_end_x = list[0] & 0x3FF;
-        psx_gpu->viewport_end_y = (list[0] >> 10) & 0x1FF;
-        psx_gpu->saved_viewport_end_x = psx_gpu->viewport_end_x;
-        psx_gpu->saved_viewport_end_y = psx_gpu->viewport_end_y;
+      {
+        s16 viewport_end_x = list[0] & 0x3FF;
+        s16 viewport_end_y = (list[0] >> 10) & 0x1FF;
+        u32 d;
+
+        if(viewport_end_x == psx_gpu->viewport_end_x &&
+         viewport_end_y == psx_gpu->viewport_end_y)
+        {
+          break;
+        }
+
+        psx_gpu->viewport_end_x = viewport_end_x;
+        psx_gpu->viewport_end_y = viewport_end_y;
+        psx_gpu->saved_viewport_end_x = viewport_end_x;
+        psx_gpu->saved_viewport_end_y = viewport_end_y;
+
+        d = (u32)viewport_end_x - (u32)psx_gpu->viewport_start_x + 1;
+        if((u32)psx_gpu->enhancement_x_threshold - d <= 16)
+        {
+          update_enhancement_buf_table_from_x(psx_gpu,
+           psx_gpu->viewport_start_x, d);
+        }
+        select_enhancement_buf(psx_gpu);
 
 #ifdef TEXTURE_CACHE_4BPP
         psx_gpu->viewport_mask =
@@ -1304,6 +1516,7 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
 #endif
         SET_Ex(4, list[0]);
         break;
+      }
   
       case 0xE5:
       {
@@ -1341,13 +1554,14 @@ u32 gpu_parse_enhanced(psx_gpu_struct *psx_gpu, u32 *list, u32 size, u32 *last_c
     }
   }
 
-#ifdef PCSX
+  enhancement_disable();
+
 breakloop:
-#endif
-enhancement_disable();
   if (last_command != NULL)
     *last_command = current_command;
   return list - list_start;
 }
 
+#endif /* PCSX */
+
 // vim:shiftwidth=2:expandtab