* cleaning do_DMA

* factored some code in read/write_acl
* skeleton for 3D vertices

desmume/src/Makefile.am

@@ -11,6 +11,7 @@ libdesmume_a_SOURCES = \
 	Disassembler.c Disassembler.h \
 	dscard.h fat.h FIFO.c FIFO.h \
 	GPU.c GPU.h \
+	gl_vertex.c gl_vertex.h \
         mem.h mc.c mc.h \
 	wifi.c wifi.h \
         MMU.c MMU.h NDSSystem.c NDSSystem.h registers.h \

desmume/src/gl_vertex.c

@@ -0,0 +1,118 @@
+/* gl_vertex.c - this file is part of DeSmuME
+ *
+ * Copyright (C) 2007 Damien Nozay (damdoum)
+ * Author: damdoum at users.sourceforge.net
+ *
+ * based on http://nocash.emubase.de/gbatek.htm
+ *
+ * This file 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, or (at your option)
+ * any later version.
+ *
+ * This file 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "gl_vertex.h"
+
+static u16 vx=0,vy=0,vz=0;
+
+INLINE void gl_VTX_one() {
+	float vfx,vfy,vfz;
+	vfx = vx / 4096.;
+	vfy = vy / 4096.;
+	vfz = vz / 4096.;
+	printf ("\tVTX (x=%.12f,y=%.12f,z=%.12f)\n",vfx,vfy,vfz);
+}
+
+void gl_VTX_begin(u32 val) {
+//see 4000500h - Cmd 40h - BEGIN_VTXS - Start of Vertex List (W)
+	vx=vy=vz=0;
+	printf ("VTX_begin : ");
+	switch(val) {
+	case 0 : // separate triangles (3 vertices for each triangle)
+		printf ("GL_TRIANGLES\n");
+		break;
+	case 1 : // separate quads (4 vertices for each triangle)
+		printf ("GL_QUADS\n");
+		break;
+	// strips : 1st triangle or quad defined by all vertices
+	//          next ones share a segment (so 2 vertices less)
+	case 2 : // triangle strips (1st : 3, next : 1)
+		printf ("GL_TRIANGLE_STRIP\n");
+		break;
+	case 3 : // quad strips (1st : 4, next : 2)
+		printf ("GL_QUAD_STRIP\n");
+		break;
+	}
+}
+void gl_VTX_end() {
+//see 4000504h - Cmd 41h - END_VTXS - End of Vertex List (W)
+	printf ("VTX_end.\n");
+}
+
+
+void gl_VTX_16 (u32 xxyy, u32 zz__) {
+//see 400048Ch - Cmd 23h - VTX_16 - Set Vertex XYZ Coordinates (W)
+	_VTX_16 xy, z_;
+	xy.val = xxyy;
+	z_.val = zz__;
+	vx = xy.bits.low ;
+	vy = xy.bits.high;
+	vz = z_.bits.low ;
+	gl_VTX_one();
+}
+void gl_VTX_10 (u32 xyz) {
+//see 4000490h - Cmd 24h - VTX_10 - Set Vertex XYZ Coordinates (W)
+	_VTX_10 vt;
+	vt.val = xyz;
+	vx = vt.bits.low  << 6;
+	vy = vt.bits.mid  << 6;
+	vz = vt.bits.high << 6;
+	gl_VTX_one();
+}
+
+
+void gl_VTX_XY (u32 xy) {
+//see 4000494h - Cmd 25h - VTX_XY - Set Vertex XY Coordinates (W)
+	_VTX_16 vt;
+	vt.val = xy;
+	vx = vt.bits.low ;
+	vy = vt.bits.high;
+	gl_VTX_one();
+}
+void gl_VTX_XZ (u32 xz) {
+//see 4000498h - Cmd 26h - VTX_XZ - Set Vertex XZ Coordinates (W)
+	_VTX_16 vt;
+	vt.val = xz;
+	vx = vt.bits.low ;
+	vz = vt.bits.high;
+	gl_VTX_one();
+}
+void gl_VTX_YZ (u32 yz) {
+//see 400049Ch - Cmd 27h - VTX_YZ - Set Vertex YZ Coordinates (W)
+	_VTX_16 vt;
+	vt.val = yz;
+	vy = vt.bits.low ;
+	vz = vt.bits.high;
+	gl_VTX_one();
+}
+
+
+void gl_VTX_DIFF (u32 diff) {
+//see 40004A0h - Cmd 28h - VTX_DIFF - Set Relative Vertex Coordinates (W)
+	_VTX_10 vt;
+	vt.val = diff;
+	vx += vt.bits.low  << 3;
+	vy += vt.bits.mid  << 3;
+	vz += vt.bits.high << 3;
+	gl_VTX_one();
+}

desmume/src/gl_vertex.h

@@ -0,0 +1,69 @@
+/* gl_vertex.h - this file is part of DeSmuME
+ *
+ * Copyright (C) 2007 Damien Nozay (damdoum)
+ * Author: damdoum at users.sourceforge.net
+ *
+ * based on http://nocash.emubase.de/gbatek.htm
+ *
+ * This file 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, or (at your option)
+ * any later version.
+ *
+ * This file 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include "types.h"
+
+typedef union {
+	u32 val;
+	struct {
+	unsigned primitive:2;
+	unsigned :30;
+	} bits;
+} _VTX_BEGIN_cmd ;
+typedef union {
+	u32 val;
+	struct { // 12 bit fractionnal
+	signed low:16;
+	signed high:16;
+	} bits;
+} _VTX_16 ;
+typedef union {
+	u32 val;
+	struct { // 6 bit fractionnal
+	signed low:10;
+	signed mid:10;
+	signed high:10;
+	signed :2;
+	} bits;
+} _VTX_10 ;
+
+void gl_VTX_begin(u32 val);
+//see 4000500h - Cmd 40h - BEGIN_VTXS - Start of Vertex List (W)
+void gl_VTX_end();
+//see 4000504h - Cmd 41h - END_VTXS - End of Vertex List (W)
+
+void gl_VTX_16 (u32 xxyy, u32 zz__);
+//see 400048Ch - Cmd 23h - VTX_16 - Set Vertex XYZ Coordinates (W)
+void gl_VTX_10 (u32 xyz);
+//see 4000490h - Cmd 24h - VTX_10 - Set Vertex XYZ Coordinates (W)
+
+void gl_VTX_XY (u32 xy);
+//see 4000494h - Cmd 25h - VTX_XY - Set Vertex XY Coordinates (W)
+void gl_VTX_XZ (u32 xz);
+//see 4000498h - Cmd 26h - VTX_XZ - Set Vertex XZ Coordinates (W)
+void gl_VTX_YZ (u32 yz);
+//see 400049Ch - Cmd 27h - VTX_YZ - Set Vertex YZ Coordinates (W)
+
+void gl_VTX_DIFF (u32 diff);
+//see 40004A0h - Cmd 28h - VTX_DIFF - Set Relative Vertex Coordinates (W)