* cleaning do_DMA

* factored some code in read/write_acl
* skeleton for 3D vertices
This commit is contained in:
damdoum 2007-02-15 15:49:51 +00:00
parent 8b44d9fade
commit 0013777236
4 changed files with 546 additions and 568 deletions

View File

@ -27,12 +27,13 @@
#include <math.h>
#include <string.h>
#include "gl_vertex.h"
#include "debug.h"
#include "NDSSystem.h"
#include "cflash.h"
#include "cp15.h"
#include "wifi.h"
#include "registers.h"
#define ROM_MASK 3
@ -225,21 +226,21 @@ void MMU_clearMem()
{
int i;
memset(ARM9Mem.ARM9_ABG, 0, 0x80000);
memset(ARM9Mem.ARM9_AOBJ, 0, 0x40000);
memset(ARM9Mem.ARM9_BBG, 0, 0x20000);
memset(ARM9Mem.ARM9_BOBJ, 0, 0x20000);
memset(ARM9Mem.ARM9_ABG, 0, 0x080000);
memset(ARM9Mem.ARM9_AOBJ, 0, 0x040000);
memset(ARM9Mem.ARM9_BBG, 0, 0x020000);
memset(ARM9Mem.ARM9_BOBJ, 0, 0x020000);
memset(ARM9Mem.ARM9_DTCM, 0, 0x4000);
memset(ARM9Mem.ARM9_ITCM, 0, 0x8000);
memset(ARM9Mem.ARM9_LCD, 0, 0xA4000);
memset(ARM9Mem.ARM9_OAM, 0, 0x800);
memset(ARM9Mem.ARM9_REG, 0, 0x1000000);
memset(ARM9Mem.ARM9_VMEM, 0, 0x800);
memset(ARM9Mem.ARM9_WRAM, 0, 0x1000000);
memset(ARM9Mem.ARM9_LCD, 0, 0x0A4000);
memset(ARM9Mem.ARM9_OAM, 0, 0x0800);
memset(ARM9Mem.ARM9_REG, 0, 0x01000000);
memset(ARM9Mem.ARM9_VMEM, 0, 0x0800);
memset(ARM9Mem.ARM9_WRAM, 0, 0x01000000);
memset(ARM9Mem.MAIN_MEM, 0, 0x400000);
memset(MMU.ARM7_ERAM, 0, 0x10000);
memset(MMU.ARM7_REG, 0, 0x10000);
memset(MMU.ARM7_ERAM, 0, 0x010000);
memset(MMU.ARM7_REG, 0, 0x010000);
for(i = 0;i < 16;i++)
FIFOInit(MMU.fifos + i);
@ -1853,55 +1854,10 @@ void FASTCALL MMU_write32(u32 proc, u32 adr, u32 val)
switch(adr)
{
#ifdef RENDER3D
case 0x040004AC :
T1WriteLong(MMU.MMU_MEM[proc][0x40], 0x4AC, val);
if(proc==ARMCPU_ARM9)
OGLRender::glTexImage2D(testval, TRUE);
//execute = FALSE;
return;
case 0x040004A8 :
case 0x04000350 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glTexImage2D(val, FALSE);
//execute = FALSE;
testval = val;
}
return;
case 0x04000488 :
if(proc==ARMCPU_ARM9)
{
OGLRender::glTexCoord(val);
//execute = FALSE;
}
return;
case 0x0400046C :
if(proc==ARMCPU_ARM9)
{
OGLRender::glScale(val);
}
return;
case 0x04000490 :
if(proc==ARMCPU_ARM9)
{
//GPULOG("VERTEX 10 %d\r\n",val);
}
return;
case 0x04000494 :
if(proc==ARMCPU_ARM9)
{
//GPULOG(printf(txt, "VERTEXY %d\r\n",val);
}
return;
case 0x04000498 :
if(proc==ARMCPU_ARM9)
{
//GPULOG("VERTEXZ %d\r\n",val);
}
return;
case 0x0400049C :
if(proc==ARMCPU_ARM9)
{
//GPULOG("VERTEYZ %d\r\n",val);
OGLRender::glClearColor(val);
}
return;
case 0x04000400 :
@ -1910,48 +1866,12 @@ void FASTCALL MMU_write32(u32 proc, u32 adr, u32 val)
OGLRender::glCallList(val);
}
return;
case 0x04000450 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glRestore();
}
return;
case 0x04000580 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glViewPort(val);
}
return;
case 0x04000350 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glClearColor(val);
}
return;
case 0x04000440 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glMatrixMode(val);
}
return;
case 0x04000458 :
if(proc == ARMCPU_ARM9)
{
OGLRender::ML4x4ajouter(val);
}
return;
case 0x0400044C :
if(proc == ARMCPU_ARM9)
{
OGLRender::glStoreMatrix(val);
}
return;
case 0x0400045C :
if(proc == ARMCPU_ARM9)
{
OGLRender::ML4x3ajouter(val);
}
return;
case 0x04000444 :
if(proc == ARMCPU_ARM9)
{
@ -1964,10 +1884,34 @@ void FASTCALL MMU_write32(u32 proc, u32 adr, u32 val)
OGLRender::glPopMatrix(val);
}
return;
case 0x04000470 :
case 0x0400044C :
if(proc == ARMCPU_ARM9)
{
OGLRender::addTrans(val);
OGLRender::glStoreMatrix(val);
}
return;
case 0x04000450 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glRestore();
}
return;
case 0x04000454 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glLoadIdentity();
}
return;
case 0x04000458 :
if(proc == ARMCPU_ARM9)
{
OGLRender::ML4x4ajouter(val);
}
return;
case 0x0400045C :
if(proc == ARMCPU_ARM9)
{
OGLRender::ML4x3ajouter(val);
}
return;
case 0x04000460 :
@ -1988,16 +1932,16 @@ void FASTCALL MMU_write32(u32 proc, u32 adr, u32 val)
OGLRender::glMultMatrix3x3(val);
}
return;
case 0x04000500 :
case 0x0400046C :
if(proc==ARMCPU_ARM9)
{
OGLRender::glBegin(val);
OGLRender::glScale(val);
}
return;
case 0x04000504 :
case 0x04000470 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glEnd();
OGLRender::addTrans(val);
}
return;
case 0x04000480 :
@ -2006,22 +1950,89 @@ void FASTCALL MMU_write32(u32 proc, u32 adr, u32 val)
OGLRender::glColor3b(val);
}
return;
case 0x0400048C :
case 0x04000488 :
if(proc==ARMCPU_ARM9)
{
OGLRender::glVertex3(val);
OGLRender::glTexCoord(val);
//execute = FALSE;
}
return;
#endif
case 0x0400048C :
if(proc == ARMCPU_ARM9) {
//OGLRender::glVertex3(val);
}
return;
case 0x04000490 :
if(proc==ARMCPU_ARM9) {
//GPULOG("VERTEX 10 %d\r\n",val);
gl_VTX_10(val);
}
return;
case 0x04000494 :
if(proc==ARMCPU_ARM9) {
//GPULOG(printf(txt, "VERTEXY %d\r\n",val);
gl_VTX_XY(val);
}
return;
case 0x04000498 :
if(proc==ARMCPU_ARM9) {
//GPULOG("VERTEXZ %d\r\n",val);
gl_VTX_XZ(val);
}
return;
case 0x0400049C :
if(proc==ARMCPU_ARM9) {
//GPULOG("VERTEYZ %d\r\n",val);
gl_VTX_YZ(val);
}
return;
case 0x040004A0 :
if(proc==ARMCPU_ARM9) {
gl_VTX_DIFF(val);
}
return;
#ifdef RENDER3D
case 0x040004A8 :
if(proc==ARMCPU_ARM9)
{
OGLRender::glTexImage2D(val, FALSE);
//execute = FALSE;
testval = val;
}
return;
case 0x040004AC :
T1WriteLong(MMU.MMU_MEM[proc][0x40], 0x4AC, val);
if(proc==ARMCPU_ARM9)
OGLRender::glTexImage2D(testval, TRUE);
//execute = FALSE;
return;
#endif
case 0x04000500 :
if(proc == ARMCPU_ARM9)
{
// OGLRender::glBegin(val);
gl_VTX_begin(val);
}
return;
case 0x04000504 :
if(proc == ARMCPU_ARM9)
{
// OGLRender::glEnd();
gl_VTX_end();
}
return;
#ifdef RENDER3D
case 0x04000540 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glFlush();
}
return;
case 0x04000454 :
case 0x04000580 :
if(proc == ARMCPU_ARM9)
{
OGLRender::glLoadIdentity();
OGLRender::glViewPort(val);
}
return;
#endif
@ -2615,336 +2626,115 @@ void FASTCALL MMU_doDMA(u32 proc, u32 num)
(((MMU.DMACrt[proc][num]>>26)&1) == 1)) // Transfer mode must be 32bit wide
taille = 256*192/2;
if(MMU.DMAStartTime[proc][num] == 5) taille *= 0x80;
if(MMU.DMAStartTime[proc][num] == 5)
taille *= 0x80;
MMU.DMACycle[proc][num] = taille + nds.cycles;
MMU.DMAing[proc][num] = TRUE;
DMALOG("proc %d, dma %d src %08X dst %08X start %d taille %d repeat %s %08X\r\n", proc, num, src, dst, MMU.DMAStartTime[proc][num], taille, (MMU.DMACrt[proc][num]&(1<<25))?"on":"off",MMU.DMACrt[proc][num]);
DMALOG("proc %d, dma %d src %08X dst %08X start %d taille %d repeat %s %08X\r\n",
proc, num, src, dst, MMU.DMAStartTime[proc][num], taille,
(MMU.DMACrt[proc][num]&(1<<25))?"on":"off",MMU.DMACrt[proc][num]);
if(!(MMU.DMACrt[proc][num]&(1<<25))) MMU.DMAStartTime[proc][num] = 0;
if(!(MMU.DMACrt[proc][num]&(1<<25)))
MMU.DMAStartTime[proc][num] = 0;
switch((MMU.DMACrt[proc][num]>>26)&1)
// transfer
{
case 1 : /* 32 bit DMA transfers */
switch(((MMU.DMACrt[proc][num]>>21)&0xF))
{
u32 i;
case 0 : /* dst and src increment */
for(i = 0; i < taille; ++i)
u32 i=0;
// 32 bit or 16 bit transfer ?
int sz = ((MMU.DMACrt[proc][num]>>26)&1)? 4 : 2;
int dstinc,srcinc;
int u=(MMU.DMACrt[proc][num]>>21);
switch(u & 0x3) {
case 0 : dstinc = sz; break;
case 1 : dstinc = 0; break;
case 2 : dstinc = -sz; break;
case 3 : dstinc = sz; break; //reload
}
switch(u >> 2) {
case 0 : srcinc = sz; break;
case 1 : srcinc = 0; break;
case 2 : srcinc = -sz; break;
case 3 : // reserved
return;
}
if ((MMU.DMACrt[proc][num]>>26)&1)
for(; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
src += 4;
dst += dstinc;
src += srcinc;
}
break;
case 1 : /* dst decrement, src increment */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst -= 4;
src += 4;
}
break;
case 2 : /* dst fixed, src increment */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
src += 4;
}
break;
case 3 : /*dst increment/reload, src increment */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
src += 4;
}
break;
case 4 : /* dst increment, src decrement */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
src -= 4;
}
break;
case 5 : /* dst decrement, src decrement */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst -= 4;
src -= 4;
}
break;
case 6 : /* dst fixed, src decrement */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
src -= 4;
}
break;
case 7 : /* dst increment/reload, src decrement */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
src -= 4;
}
break;
case 8 : /* dst increment, src fixed */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
}
break;
case 9 : /* dst decrement, src fixed */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst -= 4;
}
break;
case 10 : /* dst fixed, src fixed */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
}
break;
case 11 : /* dst increment/reload, src fixed */
for(i = 0; i < taille; ++i)
{
MMU_writeWord(proc, dst, MMU_readWord(proc, src));
dst += 4;
}
break;
default : /* reserved */
break;
}
break;
case 0 : /* 16 bit transfers */
switch(((MMU.DMACrt[proc][num]>>21)&0xF))
{
u32 i;
case 0 :
for(i = 0; i < taille; ++i)
else
for(; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
src += 2;
dst += dstinc;
src += srcinc;
}
break;
case 1 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst -= 2;
src += 2;
}
break;
case 2 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
src += 2;
}
break;
case 3 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
src += 2;
}
break;
case 4 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
src -= 2;
}
break;
case 5 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst -= 2;
src -= 2;
}
break;
case 6 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
src -= 2;
}
break;
case 7 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
src -= 2;
}
break;
case 8 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
}
break;
case 9 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst -= 2;
}
break;
case 10 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
}
break;
case 11 :
for(i = 0; i < taille; ++i)
{
MMU_write16(proc, dst, MMU_readHWord(proc, src));
dst += 2;
}
break;
default :
break;
}
break;
}
}
#ifdef MMU_ENABLE_ACL
INLINE void check_access(u32 adr, u32 access) {
/* every other mode: sys */
access |= 1;
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10) {
/* is user mode access */
access ^= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE) {
execute = FALSE ;
}
}
INLINE void check_access_write(u32 adr) {
u32 access = CP15_ACCESS_WRITE;
check_access(adr, access)
}
u8 FASTCALL MMU_read8_acl(u32 proc, u32 adr, u32 access)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* on arm9 we need to check the MPU regions */
if (proc == ARMCPU_ARM9)
check_access(u32 adr, u32 access);
return MMU_read8(proc,adr);
}
u16 FASTCALL MMU_read16_acl(u32 proc, u32 adr, u32 access)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* on arm9 we need to check the MPU regions */
if (proc == ARMCPU_ARM9)
check_access(u32 adr, u32 access);
return MMU_read16(proc,adr);
}
u32 FASTCALL MMU_read32_acl(u32 proc, u32 adr, u32 access)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* on arm9 we need to check the MPU regions */
if (proc == ARMCPU_ARM9)
check_access(u32 adr, u32 access);
return MMU_read32(proc,adr);
}
void FASTCALL MMU_write8_acl(u32 proc, u32 adr, u8 val)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
u32 access = CP15_ACCESS_WRITE ;
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* check MPU region on ARM9 */
if (proc == ARMCPU_ARM9)
check_access_write(adr);
MMU_write8(proc,adr,val);
}
void FASTCALL MMU_write16_acl(u32 proc, u32 adr, u16 val)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
u32 access = CP15_ACCESS_WRITE ;
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* check MPU region on ARM9 */
if (proc == ARMCPU_ARM9)
check_access_write(adr);
MMU_write16(proc,adr,val) ;
}
void FASTCALL MMU_write32_acl(u32 proc, u32 adr, u32 val)
{
if (proc == ARMCPU_ARM9) /* on arm9 we need to check the MPU regions */
{
u32 access = CP15_ACCESS_WRITE ;
if ((NDS_ARM9.CPSR.val & 0x1F) == 0x10)
{
/* is user mode access */
access &= ~1 ;
} else {
/* every other mode: sys */
access |= 1 ;
}
if (armcp15_isAccessAllowed((armcp15_t *)NDS_ARM9.coproc[15],adr,access)==FALSE)
{
execute = FALSE ;
}
}
/* check MPU region on ARM9 */
if (proc == ARMCPU_ARM9)
check_access_write(adr);
MMU_write32(proc,adr,val) ;
}
#endif

View File

@ -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 \

118
desmume/src/gl_vertex.c Executable file
View File

@ -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();
}

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desmume/src/gl_vertex.h Executable file
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/* 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)