--- /dev/null
+/***************************************************************************
+* Copyright (C) 2010 PCSX4ALL Team *
+* Copyright (C) 2010 Unai *
+* *
+* 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. *
+***************************************************************************/
+
+///////////////////////////////////////////////////////////////////////////////
+// GPU internal line drawing functions
+
+#define GPU_DIGITS 16
+#define GPU_DIGITSC (GPU_DIGITS+3)
+
+INLINE long GPU_DIV(long rs, long rt)
+{
+ return rt ? (rs / rt) : (0);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void gpuDrawLF(const PD gpuPixelDriver)
+{
+ s32 temp;
+ s32 xmin, xmax;
+ s32 ymin, ymax;
+ s32 x0, x1, dx;
+ s32 y0, y1, dy;
+
+ x0 = PacketBuffer.S2[2] + DrawingOffset[0]; GPU_TESTRANGE(x0);
+ y0 = PacketBuffer.S2[3] + DrawingOffset[1]; GPU_TESTRANGE(y0);
+ x1 = PacketBuffer.S2[4] + DrawingOffset[0]; GPU_TESTRANGE(x1);
+ y1 = PacketBuffer.S2[5] + DrawingOffset[1]; GPU_TESTRANGE(y1);
+
+ xmin = DrawingArea[0]; xmax = DrawingArea[2];
+ ymin = DrawingArea[1]; ymax = DrawingArea[3];
+ const u16 pixeldata = GPU_RGB16(PacketBuffer.U4[0]);
+
+ dy = (y1 - y0);
+ if (dy < 0) dy = -dy;
+ dx = (x1 - x0);
+ if (dx < 0) dx = -dx;
+ if (dx > dy) {
+ if (x0 > x1) {
+ GPU_SWAP(x0, x1, temp);
+ GPU_SWAP(y0, y1, temp);
+ }
+ y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx);
+ y0 <<= GPU_DIGITS;
+ temp = xmin - x0;
+ if (temp > 0) {
+ x0 = xmin;
+ y0 += (y1 * temp);
+ }
+ if (x1 > xmax) x1 = xmax;
+ x1 -= x0;
+ if (x1 < 0) x1 = 0;
+
+ const int li=linesInterlace;
+ for (; x1; x1--) {
+ temp = y0 >> GPU_DIGITS;
+ if( 0 == (temp&li) ) {
+ if ((u32) (temp - ymin) < (u32) (ymax - ymin)) {
+ gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)],pixeldata);
+ }
+ }
+ x0++;
+ y0 += y1;
+ }
+ } else if (dy) {
+ if (y0 > y1) {
+ GPU_SWAP(x0, x1, temp);
+ GPU_SWAP(y0, y1, temp);
+ }
+ x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy);
+ x0 <<= GPU_DIGITS;
+ temp = ymin - y0;
+ if (temp > 0) {
+ y0 = ymin;
+ x0 += (x1 * temp);
+ }
+ if (y1 > ymax) y1 = ymax;
+ y1 -= y0;
+ if (y1 < 0) y1 = 0;
+
+ const int li=linesInterlace;
+ for (; y1; y1--) {
+ if( 0 == (y0&li) ) {
+ temp = x0 >> GPU_DIGITS;
+ if ((u32) (temp - xmin) < (u32) (xmax - xmin)) {
+ gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)],pixeldata);
+ }
+ }
+ y0++;
+ x0 += x1;
+ }
+
+ } else {
+ if( 0 == (y0&linesInterlace) ) {
+ if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) {
+ if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) {
+ gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)],pixeldata);
+ }
+ }
+ }
+ }
+}
+
+/*----------------------------------------------------------------------
+GF
+----------------------------------------------------------------------*/
+
+///////////////////////////////////////////////////////////////////////////////
+void gpuDrawLG(const PD gpuPixelDriver)
+{
+ s32 temp;
+ s32 xmin, xmax;
+ s32 ymin, ymax;
+ s32 x0, x1, dx;
+ s32 y0, y1, dy;
+ s32 r0, r1;
+ s32 g0, g1;
+ s32 b0, b1;
+
+ x0 = PacketBuffer.S2[2] + DrawingOffset[0]; GPU_TESTRANGE(x0);
+ y0 = PacketBuffer.S2[3] + DrawingOffset[1]; GPU_TESTRANGE(y0);
+ x1 = PacketBuffer.S2[6] + DrawingOffset[0]; GPU_TESTRANGE(x1);
+ y1 = PacketBuffer.S2[7] + DrawingOffset[1]; GPU_TESTRANGE(y1);
+
+ r0 = PacketBuffer.U1[0]; g0 = PacketBuffer.U1[1]; b0 = PacketBuffer.U1[2];
+ r1 = PacketBuffer.U1[8]; g1 = PacketBuffer.U1[9]; b1 = PacketBuffer.U1[10];
+
+ xmin = DrawingArea[0]; xmax = DrawingArea[2];
+ ymin = DrawingArea[1]; ymax = DrawingArea[3];
+
+ dy = (y1 - y0);
+ if (dy < 0)
+ dy = -dy;
+ dx = (x1 - x0);
+ if (dx < 0)
+ dx = -dx;
+ if (dx > dy) {
+ if (x0 > x1) {
+ GPU_SWAP(x0, x1, temp);
+ GPU_SWAP(y0, y1, temp);
+ GPU_SWAP(r0, r1, temp);
+ GPU_SWAP(g0, g1, temp);
+ GPU_SWAP(b0, b1, temp);
+ }
+ y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx);
+ r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dx);
+ g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dx);
+ b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dx);
+ y0 <<= GPU_DIGITS;
+ r0 <<= GPU_DIGITS;
+ g0 <<= GPU_DIGITS;
+ b0 <<= GPU_DIGITS;
+ temp = xmin - x0;
+ if (temp > 0) {
+ x0 = xmin;
+ y0 += (y1 * temp);
+ r0 += (r1 * temp);
+ g0 += (g1 * temp);
+ b0 += (b1 * temp);
+ }
+ if (x1 > xmax) x1 = xmax;
+ x1 -= x0;
+ if (x1 < 0) x1 = 0;
+
+ const int li=linesInterlace;
+ for (; x1; x1--) {
+ temp = y0 >> GPU_DIGITS;
+ if( 0 == (temp&li) ) {
+ if ((u32) (temp - ymin) < (u32) (ymax - ymin)) {
+ gpuPixelDriver (
+ &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)],
+ (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+ );
+ }
+ }
+ x0++;
+ y0 += y1;
+ r0 += r1;
+ g0 += g1;
+ b0 += b1;
+ }
+ } else if (dy) {
+ if (y0 > y1) {
+ GPU_SWAP(x0, x1, temp);
+ GPU_SWAP(y0, y1, temp);
+ GPU_SWAP(r0, r1, temp);
+ GPU_SWAP(g0, g1, temp);
+ GPU_SWAP(b0, b1, temp);
+ }
+ x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy);
+ r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dy);
+ g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dy);
+ b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dy);
+ x0 <<= GPU_DIGITS;
+ r0 <<= GPU_DIGITS;
+ g0 <<= GPU_DIGITS;
+ b0 <<= GPU_DIGITS;
+ temp = ymin - y0;
+ if (temp > 0) {
+ y0 = ymin;
+ x0 += (x1 * temp);
+ r0 += (r1 * temp);
+ g0 += (g1 * temp);
+ b0 += (b1 * temp);
+ }
+ if (y1 > ymax) y1 = ymax;
+ y1 -= y0;
+ if (y1 < 0) y1 = 0;
+
+ const int li=linesInterlace;
+ for (; y1; y1--) {
+ if( 0 == (y0&li) ) {
+ temp = x0 >> GPU_DIGITS;
+ if ((u32) (temp - xmin) < (u32) (xmax - xmin)) {
+ gpuPixelDriver (
+ &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)],
+ (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+ );
+ }
+ }
+ y0++;
+ x0 += x1;
+ r0 += r1;
+ g0 += g1;
+ b0 += b1;
+ }
+ } else {
+ if( 0 == (y0&linesInterlace) ) {
+ if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) {
+ if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) {
+ gpuPixelDriver (
+ &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)],
+ (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+ );
+ }
+ }
+ }
+ }
+}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff