gpu_neon: support unai as rendering backend

1 files changed, 252 insertions, 0 deletions

diff --git a/plugins/gpu_neon/unai_if.cpp b/plugins/gpu_neon/unai_if.cpp
new file mode 100644
index 0000000..2b524d9
--- /dev/null
+++ b/plugins/gpu_neon/unai_if.cpp
@@ -0,0 +1,252 @@
+/***************************************************************************
+*   Copyright (C) 2010 PCSX4ALL Team                                      *
+*   Copyright (C) 2010 Unai                                               *
+*   Copyright (C) 2011 notaz                                              *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+*   This program is distributed in the hope that it will be useful,       *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+*   GNU General Public License for more details.                          *
+*                                                                         *
+*   You should have received a copy of the GNU General Public License     *
+*   along with this program; if not, write to the                         *
+*   Free Software Foundation, Inc.,                                       *
+*   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
+***************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "gpu.h"
+
+#define u8 uint8_t
+#define s8 int8_t
+#define u16 uint16_t
+#define s16 int16_t
+#define u32 uint32_t
+#define s32 int32_t
+#define s64 int64_t
+
+#define INLINE
+
+#define	FRAME_BUFFER_SIZE  (1024*512*2)
+#define	FRAME_WIDTH        1024
+#define	FRAME_HEIGHT       512
+#define	FRAME_OFFSET(x,y)  (((y)<<10)+(x))
+
+//#define VIDEO_WIDTH 320
+
+static bool isSkip = false; /* skip frame (info coming from GPU) */
+static int linesInterlace = 0;  /* internal lines interlace */
+
+#define alt_fps 0
+
+static bool light = true; /* lighting */
+static bool blend = true; /* blending */
+static bool FrameToRead = false; /* load image in progress */
+static bool FrameToWrite = false; /* store image in progress */
+
+static bool enableAbbeyHack = false; /* Abe's Odyssey hack */
+
+static u8 BLEND_MODE;
+static u8 TEXT_MODE;
+static u8 Masking;
+
+static u16 PixelMSB;
+static u16 PixelData;
+
+///////////////////////////////////////////////////////////////////////////////
+//  GPU Global data
+///////////////////////////////////////////////////////////////////////////////
+
+//  Dma Transfers info
+static s32		px,py;
+static s32		x_end,y_end;
+static u16*  pvram;
+
+static s32 PacketCount;
+static s32 PacketIndex;
+
+//  Rasterizer status
+static u32 TextureWindow [4];
+static u32 DrawingArea   [4];
+static u32 DrawingOffset [2];
+
+static u16* TBA;
+static u16* CBA;
+
+//  Inner Loops
+static s32   u4, du4;
+static s32   v4, dv4;
+static s32   r4, dr4;
+static s32   g4, dg4;
+static s32   b4, db4;
+static u32   lInc;
+static u32   tInc, tMsk;
+
+union GPUPacket
+{
+	u32 *U4;
+	s32 *S4;
+	u16 *U2;
+	s16 *S2;
+	u8  *U1;
+	s8  *S1;
+};
+
+static GPUPacket PacketBuffer;
+static u16  *GPU_FrameBuffer;
+static u32   GPU_GP1;
+
+///////////////////////////////////////////////////////////////////////////////
+
+#include "../gpu_unai/gpu_fixedpoint.h"
+
+//  Inner loop driver instanciation file
+#include "../gpu_unai/gpu_inner.h"
+
+//  GPU Raster Macros
+#define	GPU_RGB16(rgb)        ((((rgb)&0xF80000)>>9)|(((rgb)&0xF800)>>6)|(((rgb)&0xF8)>>3))
+
+#define GPU_EXPANDSIGN_POLY(x)  (((s32)(x)<<20)>>20)
+//#define GPU_EXPANDSIGN_POLY(x)  (((s32)(x)<<21)>>21)
+#define GPU_EXPANDSIGN_SPRT(x)  (((s32)(x)<<21)>>21)
+
+//#define	GPU_TESTRANGE(x)      { if((u32)(x+1024) > 2047) return; }
+#define	GPU_TESTRANGE(x)      { if ((x<-1023) || (x>1023)) return; }
+
+#define	GPU_SWAP(a,b,t)	{(t)=(a);(a)=(b);(b)=(t);}
+
+// GPU internal image drawing functions
+#include "../gpu_unai/gpu_raster_image.h"
+
+// GPU internal line drawing functions
+#include "../gpu_unai/gpu_raster_line.h"
+
+// GPU internal polygon drawing functions
+#include "../gpu_unai/gpu_raster_polygon.h"
+
+// GPU internal sprite drawing functions
+#include "../gpu_unai/gpu_raster_sprite.h"
+
+// GPU command buffer execution/store
+#include "../gpu_unai/gpu_command.h"
+
+#define unai_do_prim(cmd, list) \
+  PacketBuffer.U4 = list; \
+  gpuSendPacketFunction(cmd)
+
+/////////////////////////////////////////////////////////////////////////////
+
+int renderer_init(void)
+{
+	GPU_FrameBuffer = (u16 *)gpu.vram;
+
+	// s_invTable
+	for(int i=1;i<=(1<<TABLE_BITS);++i)
+	{
+		double v = 1.0 / double(i);
+		#ifdef GPU_TABLE_10_BITS
+		v *= double(0xffffffff>>1);
+		#else
+		v *= double(0x80000000);
+		#endif
+		s_invTable[i-1]=s32(v);
+	}
+
+	return 0;
+}
+
+extern const unsigned char cmd_lengths[256];
+
+void do_cmd_list(unsigned int *list, int list_len)
+{
+  unsigned int cmd, len;
+
+  unsigned int *list_end = list + list_len;
+
+  for (; list < list_end; list += 1 + len)
+  {
+    short *slist = (short *)list;
+    cmd = *list >> 24;
+    len = cmd_lengths[cmd];
+
+    unai_do_prim(cmd, list);
+
+    switch(cmd)
+    {
+      case 0x48 ... 0x4F:
+      {
+        u32 num_vertexes = 1;
+        u32 *list_position = &(list[2]);
+
+        while(1)
+        {
+          if((*list_position & 0xf000f000) == 0x50005000 || list_position >= list_end)
+            break;
+
+          list_position++;
+          num_vertexes++;
+        }
+
+        if(num_vertexes > 2)
+          len += (num_vertexes - 2);
+
+        break;
+      }
+
+      case 0x58 ... 0x5F:
+      {
+        u32 num_vertexes = 1;
+        u32 *list_position = &(list[2]);
+
+        while(1)
+        {
+          if((*list_position & 0xf000f000) == 0x50005000 || list_position >= list_end)
+            break;
+
+          list_position += 2;
+          num_vertexes++;
+        }
+
+        if(num_vertexes > 2)
+          len += ((num_vertexes * 2) - 2);
+
+        break;
+      }
+
+      case 0xA0:          //  sys -> vid
+      {
+        u32 load_width = slist[4];
+        u32 load_height = slist[5];
+        u32 load_size = load_width * load_height;
+
+        len += load_size / 2;
+        break;
+      }
+    }
+  }
+}
+
+void renderer_sync_ecmds(uint32_t *ecmds)
+{
+  unai_do_prim(0xe1, &ecmds[1]);
+  unai_do_prim(0xe2, &ecmds[2]);
+  unai_do_prim(0xe3, &ecmds[3]);
+  unai_do_prim(0xe4, &ecmds[4]);
+  unai_do_prim(0xe5, &ecmds[5]);
+  unai_do_prim(0xe6, &ecmds[6]);
+}
+
+void renderer_invalidate_caches(int x, int y, int w, int h)
+{
+}
+
+void renderer_flush_queues(void)
+{
+}