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authorBrian Paul <[email protected]>2003-02-20 15:43:52 +0000
committerBrian Paul <[email protected]>2003-02-20 15:43:52 +0000
commit60f84fcc91c5fb86843c528416399303da113a2f (patch)
tree698d04b625c6efac205d76ae7d68b074102090f2 /src/mesa/drivers/dos/mga
parent449e47f06a46c42fb9895d13f37b599600225e56 (diff)
latest DOS updates (Daniel Borca)
Diffstat (limited to 'src/mesa/drivers/dos/mga')
-rw-r--r--src/mesa/drivers/dos/mga/m_ttemp.h377
-rw-r--r--src/mesa/drivers/dos/mga/m_ttemp2.h375
-rw-r--r--src/mesa/drivers/dos/mga/mga.c1536
-rw-r--r--src/mesa/drivers/dos/mga/mga.h91
-rw-r--r--src/mesa/drivers/dos/mga/mga_hw.c416
-rw-r--r--src/mesa/drivers/dos/mga/mga_hw.h113
-rw-r--r--src/mesa/drivers/dos/mga/mga_mode.c231
-rw-r--r--src/mesa/drivers/dos/mga/mga_mode.h47
-rw-r--r--src/mesa/drivers/dos/mga/mga_reg.h207
9 files changed, 3393 insertions, 0 deletions
diff --git a/src/mesa/drivers/dos/mga/m_ttemp.h b/src/mesa/drivers/dos/mga/m_ttemp.h
new file mode 100644
index 00000000000..d3de69a825a
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/m_ttemp.h
@@ -0,0 +1,377 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W triangle template
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+/*
+ * Triangle Rasterizer Template
+ *
+ * This file is #include'd to generate custom triangle rasterizers.
+ *
+ * The following macros may be defined to indicate what auxillary information
+ * must be interplated across the triangle:
+ * INTERP_Z - if defined, interpolate Z values
+ * INTERP_RGB - if defined, interpolate RGB values
+ *
+ * TAG - function name
+ * CULL - enable culling for: 0=no, 1=back, -1=front
+ *
+ * SETUP_CODE - to be executed once per triangle (usually HW init)
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
+ * This code was designed for the origin to be in the upper-left corner.
+ *
+ * Inspired by triangle rasterizer code written by Brian Paul.
+ */
+
+
+
+#define TRI_SWAP(a, b) \
+do { \
+ const MGAvertex *tmp = a; \
+ a = b; \
+ b = tmp; \
+} while (0)
+
+void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)
+{
+ int area;
+ int x1, y1, x2, y2, x3, y3;
+ int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;
+#ifdef INTERP_RGB
+#define FIFO_CNT_RGB 3
+ int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;
+ int drdx, drdy, dgdx, dgdy, dbdx, dbdy;
+#else
+#define FIFO_CNT_RGB 0
+#endif
+#ifdef INTERP_Z
+#define FIFO_CNT_Z 1
+ int dzdx, dzdy;
+ int eMaj_dz, eBot_dz;
+ int z1, z2, z3;
+#else
+#define FIFO_CNT_Z 0
+#endif
+
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ double one_area;
+#ifndef INTERP_RGB
+ int red = v3->color[0];
+ int green = v3->color[1];
+ int blue = v3->color[2];
+#endif
+#else
+ unsigned long color = mga_mixrgb_full(v3->color);
+#endif
+
+ int sgn = 0;
+
+ /* sort along the vertical axis */
+ if (v2->win[1] < v1->win[1]) {
+ TRI_SWAP(v1, v2);
+#ifdef CULL
+ cull = -cull;
+#endif
+ }
+
+ if (v3->win[1] < v1->win[1]) {
+ TRI_SWAP(v1, v3);
+ TRI_SWAP(v2, v3);
+ } else if (v3->win[1] < v2->win[1]) {
+ TRI_SWAP(v2, v3);
+#ifdef CULL
+ cull = -cull;
+#endif
+ }
+
+ x1 = v1->win[0];
+ y1 = v1->win[1];
+ x2 = v2->win[0];
+ y2 = v2->win[1];
+ x3 = v3->win[0];
+ y3 = v3->win[1];
+
+ /* compute deltas for each edge */
+ eMaj_dx = x3 - x1;
+ eMaj_dy = y3 - y1;
+ eBot_dx = x2 - x1;
+ eBot_dy = y2 - y1;
+ eTop_dx = x3 - x2;
+ eTop_dy = y3 - y2;
+
+ /* compute area */
+ if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {
+ return;
+ }
+#ifdef CULL
+ if ((area * cull) > 0) {
+ return;
+ }
+#endif
+
+ mga_select();
+
+ /* set engine state */
+#ifdef SETUP_CODE
+ SETUP_CODE
+#endif
+
+ /* draw lower triangle */
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ one_area = (double)(1<<15) / (double)area;
+ mga_fifo(1);
+#else
+ mga_fifo(2);
+ mga_outl(M_FCOL, color);
+#endif
+ mga_outl(M_YDST, y1);
+
+#ifdef INTERP_Z
+ z1 = v1->win[2];
+ z2 = v2->win[2];
+ z3 = v3->win[2];
+
+ /* compute d?/dx and d?/dy derivatives */
+ eMaj_dz = z3 - z1;
+ eBot_dz = z2 - z1;
+ dzdx = (eMaj_dz * eBot_dy - eMaj_dy * eBot_dz) * one_area;
+ dzdy = (eMaj_dx * eBot_dz - eMaj_dz * eBot_dx) * one_area;
+
+#ifndef INTERP_RGB
+ mga_fifo(11);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+ mga_outl(M_DR4, red<<15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, green<<15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, blue<<15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+#else
+ mga_fifo(2);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+#endif
+#endif
+
+#ifdef INTERP_RGB
+ /* compute color deltas */
+ eMaj_dr = v3->color[0] - v1->color[0];
+ eBot_dr = v2->color[0] - v1->color[0];
+ eMaj_dg = v3->color[1] - v1->color[1];
+ eBot_dg = v2->color[1] - v1->color[1];
+ eMaj_db = v3->color[2] - v1->color[2];
+ eBot_db = v2->color[2] - v1->color[2];
+
+ /* compute color increments */
+ drdx = (eMaj_dr * eBot_dy - eMaj_dy * eBot_dr) * one_area;
+ drdy = (eMaj_dx * eBot_dr - eMaj_dr * eBot_dx) * one_area;
+ dgdx = (eMaj_dg * eBot_dy - eMaj_dy * eBot_dg) * one_area;
+ dgdy = (eMaj_dx * eBot_dg - eMaj_dg * eBot_dx) * one_area;
+ dbdx = (eMaj_db * eBot_dy - eMaj_dy * eBot_db) * one_area;
+ dbdy = (eMaj_dx * eBot_db - eMaj_db * eBot_dx) * one_area;
+
+ mga_fifo(6);
+ mga_outl(M_DR6, drdx);
+ mga_outl(M_DR7, drdy);
+ mga_outl(M_DR10, dgdx);
+ mga_outl(M_DR11, dgdy);
+ mga_outl(M_DR14, dbdx);
+ mga_outl(M_DR15, dbdy);
+#endif
+
+ if (area > 0) { /* major edge on the right */
+ if (eBot_dy) { /* have lower triangle */
+ mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eBot_dy);
+ if (x2 < x1) {
+ mga_outl(M_AR1, eBot_dx + eBot_dy - 1);
+ mga_outl(M_AR2, eBot_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eBot_dx);
+ mga_outl(M_AR2, -eBot_dx);
+ }
+
+ mga_outl(M_AR6, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR5, eMaj_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eMaj_dx);
+ mga_outl(M_AR5, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eBot_dy);
+ } else { /* no lower triangle */
+ mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR6, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR5, eMaj_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eMaj_dx);
+ mga_outl(M_AR5, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x2);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z2<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v2->color[0]<<15);
+ mga_outl(M_DR8, v2->color[1]<<15);
+ mga_outl(M_DR12, v2->color[2]<<15);
+#endif
+ }
+
+ /* draw upper triangle */
+ if (eTop_dy) {
+ mga_fifo(5);
+ mga_outl(M_AR0, eTop_dy);
+ if (x3 < x2) {
+ mga_outl(M_AR1, eTop_dx + eTop_dy - 1);
+ mga_outl(M_AR2, eTop_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eTop_dx);
+ mga_outl(M_AR2, -eTop_dx);
+ sgn &= ~M_SDXL;
+ }
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eTop_dy);
+ }
+ } else { /* major edge on the left */
+ if (eBot_dy) { /* have lower triangle */
+ mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR2, eMaj_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eMaj_dx);
+ mga_outl(M_AR2, -eMaj_dx);
+ }
+
+ mga_outl(M_AR6, eBot_dy);
+ if (x2 < x1) {
+ mga_outl(M_AR4, eBot_dx + eBot_dy - 1);
+ mga_outl(M_AR5, eBot_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eBot_dx);
+ mga_outl(M_AR5, -eBot_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eBot_dy);
+ } else { /* no lower triangle */
+ mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR2, eMaj_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eMaj_dx);
+ mga_outl(M_AR2, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x2<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ }
+
+ /* draw upper triangle */
+ if (eTop_dy) {
+ mga_fifo(5);
+ mga_outl(M_AR6, eTop_dy);
+ if (x3 < x2) {
+ mga_outl(M_AR4, eTop_dx + eTop_dy - 1);
+ mga_outl(M_AR5, eTop_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eTop_dx);
+ mga_outl(M_AR5, -eTop_dx);
+ sgn &= ~M_SDXR;
+ }
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eTop_dy);
+ }
+ }
+}
+
+#undef FIFO_CNT_RGB
+#undef FIFO_CNT_Z
+
+#undef TRI_SWAP
+
+#undef SETUP_CODE
+#undef INTERP_RGB
+#undef INTERP_Z
+#undef CULL
+#undef TAG
diff --git a/src/mesa/drivers/dos/mga/m_ttemp2.h b/src/mesa/drivers/dos/mga/m_ttemp2.h
new file mode 100644
index 00000000000..27a1c8ba037
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/m_ttemp2.h
@@ -0,0 +1,375 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W triangle template
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+/*
+ * Triangle Rasterizer Template
+ *
+ * This file is #include'd to generate custom triangle rasterizers.
+ *
+ * The following macros may be defined to indicate what auxillary information
+ * must be interplated across the triangle:
+ * INTERP_Z - if defined, interpolate Z values
+ * INTERP_RGB - if defined, interpolate RGB values
+ *
+ * TAG - function name
+ * CULL - enable culling for: 0=no, 1=back, -1=front
+ *
+ * SETUP_CODE - to be executed once per triangle (usually HW init)
+ *
+ * For flatshaded primitives, the provoking vertex is the final one.
+ * This code was designed for the origin to be in the upper-left corner.
+ *
+ * Inspired by triangle rasterizer code written by Brian Paul.
+ */
+
+
+
+#define TRI_SWAP(a, b) \
+do { \
+ const MGAvertex *tmp = a; \
+ a = b; \
+ b = tmp; \
+} while (0)
+
+void TAG (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3)
+{
+ int area;
+ int x1, y1, x2, y2, x3, y3;
+ int eMaj_dx, eMaj_dy, eBot_dx, eBot_dy, eTop_dx, eTop_dy;
+#ifdef INTERP_RGB
+#define FIFO_CNT_RGB 3
+ int eMaj_dr, eBot_dr, eMaj_dg, eBot_dg, eMaj_db, eBot_db;
+ int drdx, drdy, dgdx, dgdy, dbdx, dbdy;
+#else
+#define FIFO_CNT_RGB 0
+#endif
+#ifdef INTERP_Z
+#define FIFO_CNT_Z 1
+ int dzdx, dzdy;
+ int eMaj_dz, eBot_dz;
+ int z1, z2, z3;
+#else
+#define FIFO_CNT_Z 0
+#endif
+
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+#ifndef INTERP_RGB
+ int red = v3->color[0];
+ int green = v3->color[1];
+ int blue = v3->color[2];
+#endif
+#else
+ unsigned long color = mga_mixrgb_full(v3->color);
+#endif
+
+ int sgn = 0;
+
+ /* sort along the vertical axis */
+ if (v2->win[1] < v1->win[1]) {
+ TRI_SWAP(v1, v2);
+#ifdef CULL
+ cull = -cull;
+#endif
+ }
+
+ if (v3->win[1] < v1->win[1]) {
+ TRI_SWAP(v1, v3);
+ TRI_SWAP(v2, v3);
+ } else if (v3->win[1] < v2->win[1]) {
+ TRI_SWAP(v2, v3);
+#ifdef CULL
+ cull = -cull;
+#endif
+ }
+
+ x1 = v1->win[0];
+ y1 = v1->win[1];
+ x2 = v2->win[0];
+ y2 = v2->win[1];
+ x3 = v3->win[0];
+ y3 = v3->win[1];
+
+ /* compute deltas for each edge */
+ eMaj_dx = x3 - x1;
+ eMaj_dy = y3 - y1;
+ eBot_dx = x2 - x1;
+ eBot_dy = y2 - y1;
+ eTop_dx = x3 - x2;
+ eTop_dy = y3 - y2;
+
+ /* compute area */
+ if ((area = eMaj_dx * eBot_dy - eBot_dx * eMaj_dy) == 0) {
+ return;
+ }
+#ifdef CULL
+ if ((area * cull) > 0) {
+ return;
+ }
+#endif
+
+ mga_select();
+
+ /* set engine state */
+#ifdef SETUP_CODE
+ SETUP_CODE
+#endif
+
+ /* draw lower triangle */
+#if defined(INTERP_Z) || defined(INTERP_RGB)
+ mga_fifo(1);
+#else
+ mga_fifo(2);
+ mga_outl(M_FCOL, color);
+#endif
+ mga_outl(M_YDST, y1);
+
+#ifdef INTERP_Z
+ z1 = v1->win[2];
+ z2 = v2->win[2];
+ z3 = v3->win[2];
+
+ /* compute d?/dx and d?/dy derivatives */
+ eMaj_dz = z3 - z1;
+ eBot_dz = z2 - z1;
+ dzdx = ((long long)(eMaj_dz * eBot_dy - eMaj_dy * eBot_dz)<<15) / area;
+ dzdy = ((long long)(eMaj_dx * eBot_dz - eMaj_dz * eBot_dx)<<15) / area;
+
+#ifndef INTERP_RGB
+ mga_fifo(11);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+ mga_outl(M_DR4, red<<15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, green<<15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, blue<<15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+#else
+ mga_fifo(2);
+ mga_outl(M_DR2, dzdx);
+ mga_outl(M_DR3, dzdy);
+#endif
+#endif
+
+#ifdef INTERP_RGB
+ /* compute color deltas */
+ eMaj_dr = v3->color[0] - v1->color[0];
+ eBot_dr = v2->color[0] - v1->color[0];
+ eMaj_dg = v3->color[1] - v1->color[1];
+ eBot_dg = v2->color[1] - v1->color[1];
+ eMaj_db = v3->color[2] - v1->color[2];
+ eBot_db = v2->color[2] - v1->color[2];
+
+ /* compute color increments */
+ drdx = ((long long)(eMaj_dr * eBot_dy - eMaj_dy * eBot_dr)<<15) / area;
+ drdy = ((long long)(eMaj_dx * eBot_dr - eMaj_dr * eBot_dx)<<15) / area;
+ dgdx = ((long long)(eMaj_dg * eBot_dy - eMaj_dy * eBot_dg)<<15) / area;
+ dgdy = ((long long)(eMaj_dx * eBot_dg - eMaj_dg * eBot_dx)<<15) / area;
+ dbdx = ((long long)(eMaj_db * eBot_dy - eMaj_dy * eBot_db)<<15) / area;
+ dbdy = ((long long)(eMaj_dx * eBot_db - eMaj_db * eBot_dx)<<15) / area;
+
+ mga_fifo(6);
+ mga_outl(M_DR6, drdx);
+ mga_outl(M_DR7, drdy);
+ mga_outl(M_DR10, dgdx);
+ mga_outl(M_DR11, dgdy);
+ mga_outl(M_DR14, dbdx);
+ mga_outl(M_DR15, dbdy);
+#endif
+
+ if (area > 0) { /* major edge on the right */
+ if (eBot_dy) { /* have lower triangle */
+ mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eBot_dy);
+ if (x2 < x1) {
+ mga_outl(M_AR1, eBot_dx + eBot_dy - 1);
+ mga_outl(M_AR2, eBot_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eBot_dx);
+ mga_outl(M_AR2, -eBot_dx);
+ }
+
+ mga_outl(M_AR6, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR5, eMaj_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eMaj_dx);
+ mga_outl(M_AR5, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eBot_dy);
+ } else { /* no lower triangle */
+ mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR6, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR4, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR5, eMaj_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eMaj_dx);
+ mga_outl(M_AR5, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x2);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z2<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v2->color[0]<<15);
+ mga_outl(M_DR8, v2->color[1]<<15);
+ mga_outl(M_DR12, v2->color[2]<<15);
+#endif
+ }
+
+ /* draw upper triangle */
+ if (eTop_dy) {
+ mga_fifo(5);
+ mga_outl(M_AR0, eTop_dy);
+ if (x3 < x2) {
+ mga_outl(M_AR1, eTop_dx + eTop_dy - 1);
+ mga_outl(M_AR2, eTop_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eTop_dx);
+ mga_outl(M_AR2, -eTop_dx);
+ sgn &= ~M_SDXL;
+ }
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eTop_dy);
+ }
+ } else { /* major edge on the left */
+ if (eBot_dy) { /* have lower triangle */
+ mga_fifo(9 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR2, eMaj_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eMaj_dx);
+ mga_outl(M_AR2, -eMaj_dx);
+ }
+
+ mga_outl(M_AR6, eBot_dy);
+ if (x2 < x1) {
+ mga_outl(M_AR4, eBot_dx + eBot_dy - 1);
+ mga_outl(M_AR5, eBot_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eBot_dx);
+ mga_outl(M_AR5, -eBot_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x1<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eBot_dy);
+ } else { /* no lower triangle */
+ mga_fifo(4 + FIFO_CNT_Z + FIFO_CNT_RGB);
+
+ mga_outl(M_AR0, eMaj_dy);
+ if (x3 < x1) {
+ mga_outl(M_AR1, eMaj_dx + eMaj_dy - 1);
+ mga_outl(M_AR2, eMaj_dx);
+ sgn |= M_SDXL;
+ } else {
+ mga_outl(M_AR1, -eMaj_dx);
+ mga_outl(M_AR2, -eMaj_dx);
+ }
+
+ mga_outl(M_FXBNDRY, (x2<<16) | x1);
+#ifdef INTERP_Z
+ mga_outl(M_DR0, z1<<15);
+#endif
+#ifdef INTERP_RGB
+ mga_outl(M_DR4, v1->color[0]<<15);
+ mga_outl(M_DR8, v1->color[1]<<15);
+ mga_outl(M_DR12, v1->color[2]<<15);
+#endif
+ }
+
+ /* draw upper triangle */
+ if (eTop_dy) {
+ mga_fifo(5);
+ mga_outl(M_AR6, eTop_dy);
+ if (x3 < x2) {
+ mga_outl(M_AR4, eTop_dx + eTop_dy - 1);
+ mga_outl(M_AR5, eTop_dx);
+ sgn |= M_SDXR;
+ } else {
+ mga_outl(M_AR4, -eTop_dx);
+ mga_outl(M_AR5, -eTop_dx);
+ sgn &= ~M_SDXR;
+ }
+ mga_outl(M_SGN, sgn);
+ mga_outl(M_LEN | M_EXEC, eTop_dy);
+ }
+ }
+}
+
+#undef FIFO_CNT_RGB
+#undef FIFO_CNT_Z
+
+#undef TRI_SWAP
+
+#undef SETUP_CODE
+#undef INTERP_RGB
+#undef INTERP_Z
+#undef CULL
+#undef TAG
diff --git a/src/mesa/drivers/dos/mga/mga.c b/src/mesa/drivers/dos/mga/mga.c
new file mode 100644
index 00000000000..59bb09c9d3d
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga.c
@@ -0,0 +1,1536 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ *
+ * Thanks to Shawn Hargreaves for FreeBE/AF
+ */
+
+
+#include <dpmi.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../internal.h"
+#include "mga_reg.h"
+#include "mga_hw.h"
+#include "mga_mode.h"
+#include "mga.h"
+
+
+
+/* cached drawing engine state */
+#define OP_NONE 0
+
+#define OP_DRAWRECT (\
+ M_DWG_TRAP | /* opcod */ \
+ M_DWG_BLK | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ M_DWG_SOLID | /* solid */ \
+ M_DWG_ARZERO | /* arzero */ \
+ M_DWG_SGNZERO | /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC /* bop */ \
+ /* trans */ \
+ /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWRECT_TX32BGR (\
+ M_DWG_TEXTURE_TRAP | /* opcod */ \
+ M_DWG_I | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ /* solid */ \
+ M_DWG_ARZERO | /* arzero */ \
+ M_DWG_SGNZERO | /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BU32BGR /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWRECT_TX24BGR (\
+ M_DWG_TEXTURE_TRAP | /* opcod */ \
+ M_DWG_I | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ /* solid */ \
+ M_DWG_ARZERO | /* arzero */ \
+ M_DWG_SGNZERO | /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BU24BGR /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWLINE (\
+ M_DWG_AUTOLINE_CLOSE | /* opcod */ \
+ M_DWG_RPL | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ M_DWG_SOLID | /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BFCOL /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWLINE_I (\
+ M_DWG_AUTOLINE_CLOSE | /* opcod */ \
+ M_DWG_I | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BFCOL /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWLINE_ZI (\
+ M_DWG_AUTOLINE_CLOSE | /* opcod */ \
+ M_DWG_ZI | /* atype */ \
+ /* linear */ \
+ M_DWG_ZLT | /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BFCOL /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWTRAP (\
+ M_DWG_TRAP | /* opcod */ \
+ M_DWG_BLK | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ M_DWG_SOLID | /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC /* bop */ \
+ /* trans */ \
+ /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWTRAP_I (\
+ M_DWG_TRAP | /* opcod */ \
+ M_DWG_I | /* atype */ \
+ /* linear */ \
+ M_DWG_NOZCMP | /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC /* bop */ \
+ /* trans */ \
+ /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_DRAWTRAP_ZI (\
+ M_DWG_TRAP | /* opcod */ \
+ M_DWG_ZI | /* atype */ \
+ /* linear */ \
+ M_DWG_ZLT | /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC /* bop */ \
+ /* trans */ \
+ /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_ILOAD_32BGR (\
+ M_DWG_ILOAD | /* opcod */ \
+ M_DWG_RPL | /* atype */ \
+ /* linear */ \
+ /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ M_DWG_SGNZERO | /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BU32BGR /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+#define OP_ILOAD_24BGR (\
+ M_DWG_ILOAD | /* opcod */ \
+ M_DWG_RPL | /* atype */ \
+ /* linear */ \
+ /* zmode */ \
+ /* solid */ \
+ /* arzero */ \
+ M_DWG_SGNZERO | /* sgnzero */ \
+ M_DWG_SHFTZERO | /* shftzero */ \
+ M_DWG_BOP_SRC | /* bop */ \
+ /* trans */ \
+ M_DWG_BU24BGR /* bltmod */ \
+ /* pattern */ \
+ /* transc */ )
+
+
+
+/* internal hardware data structures */
+static int interleave;
+static unsigned long zorg;
+static unsigned long vram;
+static char card_name[80];
+
+
+
+/* some info about current mode */
+static int __bpp, __bypp;
+static int __pixwidth, __bytwidth, __pagewidth, __width, __height, __zheight;
+static int __operation;
+static int __scrollx, __scrolly;
+
+
+
+/* buffers */
+static int mga_readbuffer, mga_writebuffer;
+static long mga_readbuffer_ptr, mga_writebuffer_ptr;
+static long mga_backbuffer_ptr, mga_frontbuffer_ptr;
+
+
+
+/* lookup table for scaling 2 bit colors up to 8 bits */
+static int _rgb_scale_2[4] = {
+ 0, 85, 170, 255
+};
+
+/* lookup table for scaling 3 bit colors up to 8 bits */
+static int _rgb_scale_3[8] = {
+ 0, 36, 73, 109, 146, 182, 219, 255
+};
+
+/* lookup table for scaling 5 bit colors up to 8 bits */
+static int _rgb_scale_5[32] = {
+ 0, 8, 16, 25, 33, 41, 49, 58,
+ 66, 74, 82, 90, 99, 107, 115, 123,
+ 132, 140, 148, 156, 165, 173, 181, 189,
+ 197, 206, 214, 222, 230, 239, 247, 255
+};
+
+/* lookup table for scaling 6 bit colors up to 8 bits */
+static int _rgb_scale_6[64] = {
+ 0, 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 45, 49, 53, 57, 61,
+ 65, 69, 73, 77, 81, 85, 89, 93,
+ 97, 101, 105, 109, 113, 117, 121, 125,
+ 130, 134, 138, 142, 146, 150, 154, 158,
+ 162, 166, 170, 174, 178, 182, 186, 190,
+ 194, 198, 202, 206, 210, 215, 219, 223,
+ 227, 231, 235, 239, 243, 247, 251, 255
+};
+
+
+
+/*
+ * pixel/color routines
+ */
+void (*mga_putpixel) (unsigned int offset, int color);
+int (*mga_getpixel) (unsigned int offset);
+void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);
+int (*mga_mixrgb) (const unsigned char rgb[]);
+static int (*mga_mixrgb_full) (const unsigned char rgb[]);
+
+
+
+/* mga_fifo:
+ * Waits until there are at least <n> free slots in the FIFO buffer.
+ */
+#define mga_fifo(n) do { } while (mga_inb(M_FIFOSTATUS) < (n))
+
+
+
+static int _mga_rread (int port, int index)
+{
+ mga_select();
+ mga_outb(port, index);
+ return mga_inb(port+1);
+}
+
+
+
+static void _mga_rwrite (int port, int index, int v)
+{
+ mga_select();
+ mga_outb(port, index);
+ mga_outb(port+1, v);
+}
+
+
+
+static void _mga_ralter (int port, int index, int mask, int v)
+{
+ int temp;
+ temp = _mga_rread(port, index);
+ temp &= (~mask);
+ temp |= (v & mask);
+ _mga_rwrite(port, index, temp);
+}
+
+
+
+/* WaitTillIdle:
+ * Delay until the hardware controller has finished drawing.
+ */
+void mga_wait_idle (void)
+{
+ int tries = 2;
+
+ /*hwptr_unselect(oldptr);*/
+
+ mga_select();
+
+ while (tries--) {
+ do {
+ } while (!(mga_inl(M_FIFOSTATUS) & 0x200));
+
+ do {
+ } while (mga_inl(M_STATUS) & 0x10000);
+
+ mga_outb(M_CRTC_INDEX, 0);
+ }
+
+ /*hwptr_select(oldptr);*/
+}
+
+
+
+/* Desc: Waits for the next vertical sync period.
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static void _mga_wait_retrace (void)
+{
+ int t1 = 0;
+ int t2 = 0;
+
+ do {
+ t1 = t2;
+ t2 = mga_inl(M_VCOUNT);
+ } while (t2 >= t1);
+}
+
+
+
+/* Desc: fix scan lines
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static unsigned long _mga_fix_scans (unsigned long l)
+{
+ unsigned long m = 0;
+
+ switch (__bpp) {
+ case 8:
+ m = interleave?128:64;
+ break;
+ case 15:
+ case 16:
+ m = interleave?64:32;
+ break;
+ case 24:
+ m = interleave?128:64;
+ break;
+ case 32:
+ m = 32;
+ break;
+ }
+
+ m -= 1;
+ return (l + m) & ~m;
+}
+
+
+
+/* Desc: HW scrolling function
+ *
+ * In :
+ * Out :
+ *
+ * Note: view Z-buffer in 16bit modes: _mga_display_start(0, 0, __height, 1)
+ */
+void mga_display_start (long boffset, long x, long y, long waitVRT)
+{
+ long addr;
+
+ mga_select();
+
+ if (waitVRT >= 0) {
+
+ addr = __bytwidth * y + (boffset + x) * __bypp;
+
+ if (interleave) {
+ addr /= 8;
+ } else {
+ addr /= 4;
+ }
+
+ _mga_rwrite(M_CRTC_INDEX, 0x0D, (addr)&0xFF);
+ _mga_rwrite(M_CRTC_INDEX, 0x0C, (addr>>8)&0xFF);
+ _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x0F, (addr>>16)&0x0F);
+
+ while (waitVRT--) {
+ _mga_wait_retrace();
+ }
+ }
+
+ __scrollx = x;
+ __scrolly = y;
+}
+
+
+
+/* Desc: set READ buffer
+ *
+ * In : either FRONT or BACK buffer
+ * Out :
+ *
+ * Note:
+ */
+void mga_set_readbuffer (int buffer)
+{
+ mga_readbuffer = buffer;
+
+ mga_readbuffer_ptr = (mga_readbuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;
+}
+
+
+
+/* Desc: set WRITE buffer
+ *
+ * In : either FRONT or BACK buffer
+ * Out :
+ *
+ * Note:
+ */
+void mga_set_writebuffer (int buffer)
+{
+ mga_writebuffer = buffer;
+
+ mga_writebuffer_ptr = (mga_writebuffer == MGA_FRONTBUFFER) ? mga_frontbuffer_ptr : mga_backbuffer_ptr;
+
+ mga_select();
+ mga_fifo(1);
+ mga_outl(M_YDSTORG, mga_writebuffer_ptr);
+
+ __operation = OP_NONE;
+}
+
+
+
+/* Desc: swap buffers
+ *
+ * In : number of vertical retraces to wait
+ * Out :
+ *
+ * Note:
+ */
+void mga_swapbuffers (int swapinterval)
+{
+ /* flip the buffers */
+ mga_backbuffer_ptr ^= __pagewidth;
+ mga_frontbuffer_ptr ^= __pagewidth;
+
+ /* update READ/WRITE pointers */
+ mga_set_readbuffer(mga_readbuffer);
+ mga_set_writebuffer(mga_writebuffer);
+
+ /* make sure we always see the FRONT buffer */
+ mga_display_start(mga_frontbuffer_ptr, __scrollx, __scrolly, swapinterval);
+}
+
+
+
+/* Desc: color composition (w/o ALPHA)
+ *
+ * In : array of integers (R, G, B)
+ * Out : color
+ *
+ * Note: -
+ */
+static __inline int _mga_mixrgb8 (const unsigned char rgb[])
+{
+ return (rgb[0]&0xe0)|((rgb[1]>>5)<<2)|(rgb[2]>>6);
+}
+static __inline int _mga_mixrgb15 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);
+}
+static __inline int _mga_mixrgb16 (const unsigned char rgb[])
+{
+ return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);
+}
+static __inline int _mga_mixrgb32 (const unsigned char rgb[])
+{
+ return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);
+}
+
+
+
+/* Desc: color composition (w/o ALPHA) + replication
+ *
+ * In : array of integers (R, G, B)
+ * Out : color
+ *
+ * Note: -
+ */
+static int _mga_mixrgb8_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb8(rgb);
+ color |= color<<8;
+ return (color<<16) | color;
+}
+static int _mga_mixrgb15_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb15(rgb);
+ return (color<<16) | color;
+}
+static int _mga_mixrgb16_full (const unsigned char rgb[])
+{
+ int color = _mga_mixrgb16(rgb);
+ return (color<<16) | color;
+}
+#define _mga_mixrgb32_full _mga_mixrgb32
+
+
+
+/* Desc: putpixel
+ *
+ * In : pixel offset, pixel value
+ * Out : -
+ *
+ * Note: uses current write buffer
+ */
+static void _mga_putpixel8 (unsigned int offset, int color)
+{
+ hwptr_pokeb(mgaptr.linear_map, mga_writebuffer_ptr + offset, color);
+}
+#define _mga_putpixel15 _mga_putpixel16
+static void _mga_putpixel16 (unsigned int offset, int color)
+{
+ hwptr_pokew(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 2, color);
+}
+static void _mga_putpixel32 (unsigned int offset, int color)
+{
+ hwptr_pokel(mgaptr.linear_map, (mga_writebuffer_ptr + offset) * 4, color);
+}
+
+
+
+/* Desc: pixel retrieval
+ *
+ * In : pixel offset
+ * Out : pixel value
+ *
+ * Note: uses current read buffer
+ */
+static __inline int _mga_getpixel8 (unsigned int offset)
+{
+ return hwptr_peekb(mgaptr.linear_map, mga_readbuffer_ptr + offset);
+}
+#define _mga_getpixel15 _mga_getpixel16
+static __inline int _mga_getpixel16 (unsigned int offset)
+{
+ return hwptr_peekw(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 2);
+}
+static __inline int _mga_getpixel32 (unsigned int offset)
+{
+ return hwptr_peekl(mgaptr.linear_map, (mga_readbuffer_ptr + offset) * 4);
+}
+
+
+
+/* Desc: color decomposition
+ *
+ * In : pixel offset, array of integers to hold color components (R, G, B, A)
+ * Out : -
+ *
+ * Note: uses current read buffer
+ */
+static void _mga_getrgba8 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel8(offset);
+ rgba[0] = _rgb_scale_3[(c >> 5) & 0x7];
+ rgba[1] = _rgb_scale_3[(c >> 2) & 0x7];
+ rgba[2] = _rgb_scale_2[c & 0x3];
+ rgba[3] = 255;
+}
+static void _mga_getrgba15 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel15(offset);
+ rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
+ rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void _mga_getrgba16 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel16(offset);
+ rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
+ rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
+ rgba[2] = _rgb_scale_5[c & 0x1F];
+ rgba[3] = 255;
+}
+static void _mga_getrgba32 (unsigned int offset, unsigned char rgba[4])
+{
+ int c = _mga_getpixel32(offset);
+ rgba[0] = c >> 16;
+ rgba[1] = c >> 8;
+ rgba[2] = c;
+ rgba[3] = c >> 24;
+}
+
+
+
+/* Desc: RGB flat line
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2)
+{
+ unsigned long color;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+
+ if ((x1 == x2) && (y1 == y2)) {
+ return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWLINE);
+ __operation = OP_DRAWLINE;
+ }
+
+ color = mga_mixrgb_full(v2->color);
+
+ /* draw the line */
+ mga_fifo(3);
+ mga_outl(M_FCOL, color);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB flat Z-less line
+ *
+ * In :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int z1, dz;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+ return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_ZI) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);
+ __operation = OP_DRAWLINE_ZI;
+ }
+
+ if (dx < dy) {
+ dx = dy;
+ }
+
+ z1 = v1->win[2] << 15;
+ dz = ((v2->win[2] << 15) - z1) / dx;
+
+ /* draw the line */
+ mga_fifo(14);
+ mga_outl(M_DR0, z1);
+ mga_outl(M_DR2, dz);
+ mga_outl(M_DR3, dz);
+ mga_outl(M_DR4, v2->color[0] << 15);
+ mga_outl(M_DR6, 0);
+ mga_outl(M_DR7, 0);
+ mga_outl(M_DR8, v2->color[1] << 15);
+ mga_outl(M_DR10, 0);
+ mga_outl(M_DR11, 0);
+ mga_outl(M_DR12, v2->color[2] << 15);
+ mga_outl(M_DR14, 0);
+ mga_outl(M_DR15, 0);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB iterated line
+ *
+ * In :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int r1, g1, b1;
+ int dr, dg, db;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+ return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_I) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWLINE_I);
+ __operation = OP_DRAWLINE_I;
+ }
+
+ if (dx < dy) {
+ dx = dy;
+ }
+
+ r1 = v1->color[0] << 15;
+ g1 = v1->color[1] << 15;
+ b1 = v1->color[2] << 15;
+ dr = ((v2->color[0] << 15) - r1) / dx;
+ dg = ((v2->color[1] << 15) - g1) / dx;
+ db = ((v2->color[2] << 15) - b1) / dx;
+
+ /* draw the line */
+ mga_fifo(11);
+ mga_outl(M_DR4, r1);
+ mga_outl(M_DR6, dr);
+ mga_outl(M_DR7, dr);
+ mga_outl(M_DR8, g1);
+ mga_outl(M_DR10, dg);
+ mga_outl(M_DR11, dg);
+ mga_outl(M_DR12, b1);
+ mga_outl(M_DR14, db);
+ mga_outl(M_DR15, db);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB iterated Z-less line
+ *
+ * In :
+ * Out :
+ *
+ * Note: I never figured out "diagonal increments"
+ */
+void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2)
+{
+ int z1, dz;
+ int r1, g1, b1;
+ int dr, dg, db;
+ int x1 = v1->win[0];
+ int y1 = v1->win[1];
+ int x2 = v2->win[0];
+ int y2 = v2->win[1];
+ int dx = abs(x2 - x1);
+ int dy = abs(y2 - y1);
+
+ if ((dx == 0) && (dy == 0)) {
+ return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWLINE_ZI) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWLINE_ZI);
+ __operation = OP_DRAWLINE_ZI;
+ }
+
+ if (dx < dy) {
+ dx = dy;
+ }
+
+ z1 = v1->win[2] << 15;
+ dz = ((v2->win[2] << 15) - z1) / dx;
+
+ r1 = v1->color[0] << 15;
+ g1 = v1->color[1] << 15;
+ b1 = v1->color[2] << 15;
+ dr = ((v2->color[0] << 15) - r1) / dx;
+ dg = ((v2->color[1] << 15) - g1) / dx;
+ db = ((v2->color[2] << 15) - b1) / dx;
+
+ /* draw the line */
+ mga_fifo(14);
+ mga_outl(M_DR0, z1);
+ mga_outl(M_DR2, dz);
+ mga_outl(M_DR3, dz);
+ mga_outl(M_DR4, r1);
+ mga_outl(M_DR6, dr);
+ mga_outl(M_DR7, dr);
+ mga_outl(M_DR8, g1);
+ mga_outl(M_DR10, dg);
+ mga_outl(M_DR11, dg);
+ mga_outl(M_DR12, b1);
+ mga_outl(M_DR14, db);
+ mga_outl(M_DR15, db);
+ mga_outl(M_XYSTRT, (y1<<16) | x1);
+ mga_outl(M_XYEND | M_EXEC, (y2<<16) | x2);
+}
+
+
+
+/* Desc: RGB flat triangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_flat
+#define CULL
+#define SETUP_CODE \
+ if (__operation != OP_DRAWTRAP) { \
+ mga_fifo(1); \
+ mga_outl(M_DWGCTL, OP_DRAWTRAP); \
+ __operation = OP_DRAWTRAP; \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB flat Z-less triangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_flat_zless
+#define CULL
+#define INTERP_Z
+#define SETUP_CODE \
+ if (__operation != OP_DRAWTRAP_ZI) { \
+ mga_fifo(1); \
+ mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \
+ __operation = OP_DRAWTRAP_ZI; \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB iterated triangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_iter
+#define CULL
+#define INTERP_RGB
+#define SETUP_CODE \
+ if (__operation != OP_DRAWTRAP_I) { \
+ mga_fifo(1); \
+ mga_outl(M_DWGCTL, OP_DRAWTRAP_I); \
+ __operation = OP_DRAWTRAP_I; \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB iterated Z-less triangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+#define TAG mga_draw_tri_rgb_iter_zless
+#define CULL
+#define INTERP_Z
+#define INTERP_RGB
+#define SETUP_CODE \
+ if (__operation != OP_DRAWTRAP_ZI) { \
+ mga_fifo(1); \
+ mga_outl(M_DWGCTL, OP_DRAWTRAP_ZI); \
+ __operation = OP_DRAWTRAP_ZI; \
+ }
+#include "m_ttemp.h"
+
+
+
+/* Desc: RGB flat rectangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color)
+{
+ if (__bpp == 8) {
+ color |= color << 8;
+ }
+ if (__bpp <= 16) {
+ color |= color << 16;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT) {
+
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWRECT);
+ __operation = OP_DRAWRECT;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(3);
+ mga_outl(M_FCOL, color);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+}
+
+
+
+/* Desc: 32RGB textured span
+ *
+ * In :
+ * Out :
+ *
+ * Note: 0 <= width <= 7*1024
+ */
+void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap)
+{
+ int i;
+
+ if (!width) {
+ return;
+ }
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX32BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);
+ __operation = OP_DRAWRECT_TX32BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ do {
+ mga_outl(i, *bitmap);
+ bitmap++;
+ i += 4;
+ } while (--width);
+}
+
+
+
+/* Desc: 24RGB textured span
+ *
+ * In :
+ * Out :
+ *
+ * Note: 0 <= width <= 7*1024
+ */
+void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX24BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);
+ __operation = OP_DRAWRECT_TX24BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | 1);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * 3 + 3) / 4;
+ while (width) {
+ mga_outl(i & (7 * 1024 - 1), *bitmap);
+ bitmap++;
+ i += 4;
+ width--;
+ }
+}
+
+
+
+/* Desc: 32RGB textured rectangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX32BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWRECT_TX32BGR);
+ __operation = OP_DRAWRECT_TX32BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width *= height;
+ while (width) {
+ mga_outl(i & (7 * 1024 - 1), *bitmap);
+ bitmap++;
+ i += 4;
+ width--;
+ }
+}
+
+
+
+/* Desc: 24RGB textured rectangle
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_DRAWRECT_TX24BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_DRAWRECT_TX24BGR);
+ __operation = OP_DRAWRECT_TX24BGR;
+ }
+
+ /* draw the rectangle */
+ mga_fifo(2);
+ mga_outl(M_FXBNDRY, ((left+width)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * height * 3 + 3) / 4;
+ while (width) {
+ mga_outl(i & (7 * 1024 - 1), *bitmap);
+ bitmap++;
+ i += 4;
+ width--;
+ }
+}
+
+
+
+/* Desc: copy 32RGB image to screen
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_ILOAD_32BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_ILOAD_32BGR);
+ __operation = OP_ILOAD_32BGR;
+ }
+
+ /* draw the bitmap */
+ mga_fifo(5);
+ mga_outl(M_AR0, width-1);
+ mga_outl(M_AR3, 0);
+ mga_outl(M_AR5, 0);
+ mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width *= height;
+ while (width) {
+ mga_outl(i & (7 * 1024 - 1), *bitmap);
+ bitmap++;
+ i += 4;
+ width--;
+ }
+}
+
+
+
+/* Desc: copy 24RGB image to screen
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap)
+{
+ int i;
+
+ mga_select();
+
+ /* set engine state */
+ if (__operation != OP_ILOAD_24BGR) {
+ mga_fifo(1);
+ mga_outl(M_DWGCTL, OP_ILOAD_24BGR);
+ __operation = OP_ILOAD_24BGR;
+ }
+
+ /* draw the bitmap */
+ mga_fifo(5);
+ mga_outl(M_AR0, width-1);
+ mga_outl(M_AR3, 0);
+ mga_outl(M_AR5, 0);
+ mga_outl(M_FXBNDRY, ((left+width-1)<<16) | left);
+ mga_outl(M_YDSTLEN | M_EXEC, (top<<16) | height);
+
+ /* copy data to the pseudo-dma window */
+ i = 0;
+ width = (width * height * 3 + 3) / 4;
+ while (width) {
+ mga_outl(i & (7 * 1024 - 1), *bitmap);
+ bitmap++;
+ i += 4;
+ width--;
+ }
+}
+
+
+
+/* Desc: get Z-buffer value
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+unsigned short mga_getz (int offset)
+{
+ return hwptr_peekw(mgaptr.linear_map, zorg + (mga_readbuffer_ptr + offset) * 2);
+}
+
+
+
+/* Desc: put Z-buffer value
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_setz (int offset, unsigned short z)
+{
+ hwptr_pokew(mgaptr.linear_map, zorg + (mga_writebuffer_ptr + offset) * 2, z);
+}
+
+
+
+/* Desc: clear Z-buffer
+ *
+ * In :
+ * Out :
+ *
+ * Note: uses current write buffer
+ */
+static void _mga_clear_zed (int left, int top, int width, int height, unsigned short z)
+{
+ if (__bpp == 16) {
+ /* GPU store (high bandwidth)
+ * Hack alert:
+ * can cause problems with concurrent FB accesses
+ */
+ mga_select();
+ mga_fifo(1);
+ mga_outl(M_YDSTORG, mga_writebuffer_ptr + zorg/2);
+ mga_draw_rect_rgb_flat(left, top, width, height, z);
+ mga_fifo(1);
+ mga_outl(M_YDSTORG, mga_writebuffer_ptr);
+ } else {
+ /* CPU store */
+ unsigned long i, zz = (z<<16) | z;
+ unsigned long ofs = zorg + (top * __pixwidth + left + mga_writebuffer_ptr) * 2;
+ hwptr_select(mgaptr.linear_map);
+ while (height--) {
+ i = width/2;
+ while (i--) {
+ hwptr_nspokel(mgaptr.linear_map, ofs, zz);
+ ofs += 4;
+ }
+ if (width & 1) {
+ hwptr_nspokew(mgaptr.linear_map, ofs, z);
+ ofs += 2;
+ }
+ ofs += (__pixwidth - width) * 2;
+ }
+ }
+}
+
+
+
+/* Desc: clear color- and Z-buffer
+ *
+ * In : front = clear front buffer
+ * back = clear back buffer
+ * zed = clear depth buffer
+ * left = leftmost pixel to be cleared
+ * top = starting line
+ * width = number of pixels
+ * height = number of lines
+ * color = color to clear to
+ * z = z value (ignored if zed==0)
+ * Out :
+ *
+ * Note:
+ */
+void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z)
+{
+ if (front) {
+ if (mga_writebuffer == MGA_FRONTBUFFER) {
+ mga_draw_rect_rgb_flat(left, top, width, height, color);
+ if (zed) {
+ _mga_clear_zed(left, top, width, height, z);
+ }
+ front = 0;
+ }
+ }
+ if (back) {
+ if (mga_writebuffer == MGA_BACKBUFFER) {
+ mga_draw_rect_rgb_flat(left, top, width, height, color);
+ if (zed) {
+ _mga_clear_zed(left, top, width, height, z);
+ }
+ back = 0;
+ }
+ }
+ if (front) {
+ int old = mga_writebuffer;
+ mga_set_writebuffer(MGA_FRONTBUFFER);
+ mga_draw_rect_rgb_flat(left, top, width, height, color);
+ if (zed) {
+ _mga_clear_zed(left, top, width, height, z);
+ }
+ mga_set_writebuffer(old);
+ front = 0;
+ }
+ if (back) {
+ int old = mga_writebuffer;
+ mga_set_writebuffer(MGA_BACKBUFFER);
+ mga_draw_rect_rgb_flat(left, top, width, height, color);
+ if (zed) {
+ _mga_clear_zed(left, top, width, height, z);
+ }
+ mga_set_writebuffer(old);
+ back = 0;
+ }
+}
+
+
+
+/* Desc: Attempts to enter specified video mode.
+ *
+ * In : ptr to mode structure, number of pages, Z-buffer request, refresh rate
+ * Out : 0 if success
+ *
+ * Note: also set up the accelerator engine
+ */
+int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh)
+{
+ static int mill_strides[] = { 640, 768, 800, 960, 1024, 1152, 1280, 1600, 1920, 2048, 0 };
+ unsigned int i, used;
+ MGA_MODE *p;
+
+ if (mga_hw_init(&vram, &interleave, card_name) == 0) {
+ return -1;
+ }
+
+ if ((p = mga_mode_find(width, height, bpp)) == NULL) {
+ return -1;
+ }
+
+ __bpp = p->bpp;
+ __width = __pagewidth = p->xres;
+ __height = p->yres;
+
+ if (buffers > 1) {
+ __pagewidth = _mga_fix_scans(__pagewidth);
+ __pixwidth = __pagewidth * buffers;
+ } else {
+ __pixwidth = __pagewidth;
+ __pixwidth = _mga_fix_scans(__pixwidth);
+ }
+
+ for (i=0; mill_strides[i]; i++) {
+ if (__pixwidth <= mill_strides[i]) {
+ __pixwidth = mill_strides[i];
+ break;
+ }
+ }
+
+ __bypp = (__bpp+7)/8;
+ __bytwidth = __pixwidth * __bypp;
+
+ /* compute used memory: framebuffer + zbuffer */
+ used = __bytwidth * __height;
+ if (zbuffer) {
+ zorg = (used + 511) & ~511;
+ /* Hack alert:
+ * a 16-bit Z-buffer size is (stride_in_pixels * number_of_lines * 2)
+ * We cannot mess with the Z-buffer width, but we might decrease the
+ * number of lines, if the user requests less than (screen_height). For
+ * example with a 2MB card, one can have 640x480x16 display with 2 color
+ * buffers and Z-buffer if the maximum requested height is 339:
+ * Total = (640*480 * 2 + 640*339 * 2) * 2
+ * However, this means the user must not write beyond the window's height
+ * and if we'll ever implement moveable windows, we'll have to reconsider
+ * this hack.
+ */
+#if 1
+ __zheight = height; /* smaller */
+ used = zorg + __pixwidth * 2 * __zheight;
+#else
+ __zheight = __height;
+ used = zorg + __pixwidth * 2 * __zheight;
+#endif
+ }
+
+ if (mill_strides[i] && (vram>=used)) {
+ /* enter mode */
+ mga_mode_switch(p, refresh);
+ /* change the scan line length */
+ _mga_ralter(M_CRTC_INDEX, 0x14, 0x40, 0); /* disable DWORD */
+ _mga_ralter(M_CRTC_INDEX, 0x17, 0x40, 0x40); /* wbmode = BYTE */
+ if (interleave) {
+ _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/16);
+ _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/16)>>4)&0x30);
+ } else {
+ _mga_rwrite(M_CRTC_INDEX, 0x13, __bytwidth/8);
+ _mga_ralter(M_CRTC_EXT_INDEX, 0, 0x30, ((__bytwidth/8)>>4)&0x30);
+ }
+ } else {
+ return -1;
+ }
+
+ /* setup buffers */
+ mga_frontbuffer_ptr = 0;
+ if (buffers > 1) {
+ mga_backbuffer_ptr = __pagewidth;
+ mga_set_readbuffer(MGA_BACKBUFFER);
+ mga_set_writebuffer(MGA_BACKBUFFER);
+ } else {
+ mga_backbuffer_ptr = 0;
+ mga_set_readbuffer(MGA_FRONTBUFFER);
+ mga_set_writebuffer(MGA_FRONTBUFFER);
+ }
+ mga_display_start(mga_frontbuffer_ptr, __scrollx = 0, __scrolly = 0, 1);
+
+ /* set up the accelerator engine */
+ mga_select();
+
+ mga_fifo(8);
+ mga_outl(M_PITCH, __pixwidth);
+ mga_outl(M_PLNWT, 0xFFFFFFFF);
+ mga_outl(M_OPMODE, M_DMA_BLIT);
+ mga_outl(M_CXBNDRY, 0xFFFF0000);
+ mga_outl(M_YTOP, 0x00000000);
+ mga_outl(M_YBOT, 0x007FFFFF);
+ mga_outl(M_ZORG, zorg);
+
+#define INITPTR(bpp) \
+ mga_putpixel = _mga_putpixel##bpp; \
+ mga_getrgba = _mga_getrgba##bpp; \
+ mga_getpixel = _mga_getpixel##bpp; \
+ mga_mixrgb = _mga_mixrgb##bpp; \
+ mga_mixrgb_full = _mga_mixrgb##bpp##_full
+
+ switch (__bpp) {
+ case 8:
+ mga_outl(M_MACCESS, 0);
+ INITPTR(8);
+ break;
+ case 15:
+ mga_outl(M_MACCESS, 0x80000001);
+ INITPTR(15);
+ break;
+ case 16:
+ mga_outl(M_MACCESS, 1);
+ INITPTR(16);
+ break;
+ case 32:
+ mga_outl(M_MACCESS, 2);
+ INITPTR(32);
+ break;
+ }
+
+#undef INITPTR
+
+ /* disable VGA aperture */
+ i = mga_inb(M_MISC_R);
+ mga_outb(M_MISC_W, i & ~2);
+
+ /* clear Z-buffer (if any) */
+ if (zbuffer) {
+ unsigned long ofs = zorg;
+ unsigned long len = zorg + __pixwidth * 2 * __zheight;
+
+ hwptr_select(mgaptr.linear_map);
+ for (; ofs<len; ofs+=4) {
+ hwptr_nspokel(mgaptr.linear_map, ofs, -1);
+ }
+ }
+
+ return 0;
+}
+
+
+
+/* Desc:
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_close (int restore, int unmap)
+{
+ if (restore) {
+ mga_mode_restore();
+ }
+ if (unmap) {
+ mga_hw_fini();
+ }
+}
+
+
+
+/* Desc: state retrieval
+ *
+ * In : parameter name, ptr to storage
+ * Out : 0 if request successfully processed
+ *
+ * Note: -
+ */
+int mga_get (int pname, int *params)
+{
+ switch (pname) {
+ case MGA_GET_CARD_NAME:
+ strcat(strcpy((char *)params, "Matrox "), card_name);
+ break;
+ case MGA_GET_VRAM:
+ params[0] = vram;
+ break;
+ case MGA_GET_CI_PREC:
+ params[0] = 0;
+ break;
+ case MGA_GET_HPIXELS:
+ params[0] = __pixwidth;
+ break;
+ case MGA_GET_SCREEN_SIZE:
+ params[0] = __width;
+ params[1] = __height;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
diff --git a/src/mesa/drivers/dos/mga/mga.h b/src/mesa/drivers/dos/mga/mga.h
new file mode 100644
index 00000000000..fc5722b0314
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga.h
@@ -0,0 +1,91 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_H_included
+#define MGA_H_included
+
+#define MGA_GET_CARD_NAME 0x0100
+#define MGA_GET_VRAM 0x0101
+#define MGA_GET_CI_PREC 0x0200
+#define MGA_GET_HPIXELS 0x0201
+#define MGA_GET_SCREEN_SIZE 0x0202
+
+int mga_open (int width, int height, int bpp, int buffers, int zbuffer, int refresh);
+void mga_clear (int front, int back, int zed, int left, int top, int width, int height, int color, unsigned short z);
+int mga_get (int pname, int *params);
+void mga_close (int restore, int unmap);
+
+extern void (*mga_putpixel) (unsigned int offset, int color);
+extern int (*mga_getpixel) (unsigned int offset);
+extern void (*mga_getrgba) (unsigned int offset, unsigned char rgba[4]);
+extern int (*mga_mixrgb) (const unsigned char rgb[]);
+
+#define MGA_BACKBUFFER !0
+#define MGA_FRONTBUFFER 0
+void mga_set_readbuffer (int buffer);
+void mga_set_writebuffer (int buffer);
+void mga_swapbuffers (int swapinterval);
+
+unsigned short mga_getz (int offset);
+void mga_setz (int offset, unsigned short z);
+
+void mga_wait_idle (void);
+
+/*
+ * vertex structure, used for primitive rendering
+ */
+typedef struct {
+ int win[4]; /* X, Y, Z, ? */
+ unsigned char color[4]; /* R, G, B, A */
+} MGAvertex;
+
+void mga_draw_line_rgb_flat (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_flat_zless (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_iter (const MGAvertex *v1, const MGAvertex *v2);
+void mga_draw_line_rgb_iter_zless (const MGAvertex *v1, const MGAvertex *v2);
+
+void mga_draw_tri_rgb_flat (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_flat_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_iter (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+void mga_draw_tri_rgb_iter_zless (int cull, const MGAvertex *v1, const MGAvertex *v2, const MGAvertex *v3);
+
+void mga_draw_rect_rgb_flat (int left, int top, int width, int height, int color);
+void mga_draw_rect_rgb_tx32 (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_draw_rect_rgb_tx24 (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_draw_span_rgb_tx32 (int left, int top, int width, const unsigned long *bitmap);
+void mga_draw_span_rgb_tx24 (int left, int top, int width, const unsigned long *bitmap);
+
+void mga_iload_32RGB (int left, int top, int width, int height, const unsigned long *bitmap);
+void mga_iload_24RGB (int left, int top, int width, int height, const unsigned long *bitmap);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_hw.c b/src/mesa/drivers/dos/mga/mga_hw.c
new file mode 100644
index 00000000000..4354ce86155
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga_hw.c
@@ -0,0 +1,416 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W HW mapping
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#include <crt0.h>
+#include <dpmi.h>
+#include <pc.h>
+#include <string.h>
+#include <sys/nearptr.h>
+#include <sys/segments.h>
+
+#include "../internal.h"
+#include "mga_reg.h"
+#include "mga_hw.h"
+
+
+
+/* Hack alert:
+ * these should really be externs
+ */
+/* PCI access routines */
+static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle);
+static unsigned long pci_read_long (int handle, int index);
+static void pci_write_long (int handle, int index, unsigned long value);
+
+
+
+/* PCI device identifiers */
+#define MATROX_VENDOR_ID 0x102B
+
+typedef enum {
+ MATROX_MILL_ID = 0x0519
+} MATROX_ID;
+
+static MATROX_ID matrox_id_list[] = {
+ MATROX_MILL_ID,
+ 0
+};
+
+
+
+/* internal hardware data structures */
+#if !MGA_FARPTR
+static int dirty;
+#endif
+static int bus_id;
+static unsigned long reg40;
+static unsigned long io_mem_base[4], linear_base;
+static unsigned long io_mem_size[4], linear_size;
+static MATROX_ID matrox_id;
+
+
+
+/* interface structures containing hardware pointer data */
+MGA_HWPTR mgaptr;
+
+
+
+/* Desc: create MMAP
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static int _create_mmap (__dpmi_paddr *m, unsigned long base, unsigned long size)
+{
+#if MGA_FARPTR
+ int sel;
+ if (_create_selector(&sel, base, size)) {
+ return -1;
+ }
+ m->selector = sel;
+ m->offset32 = 0;
+#else
+ m->selector = _my_ds();
+ if (_create_linear_mapping(&m->offset32, base, size)) {
+ return -1;
+ }
+ m->offset32 -= __djgpp_base_address;
+#endif
+ return 0;
+}
+
+
+
+/* Desc: destroy MMAP
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static void _destroy_mmap (__dpmi_paddr *m)
+{
+#if MGA_FARPTR
+ int sel = m->selector;
+ _remove_selector(&sel);
+#else
+ m->offset32 += __djgpp_base_address;
+ _remove_linear_mapping(&m->offset32);
+#endif
+ m->selector = 0;
+ m->offset32 = 0;
+}
+
+
+
+/* Desc: Counts amount of installed RAM
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static int _mga_get_vram (MATROX_ID chip, unsigned long base)
+{
+ int ProbeSize = 8;
+ int SizeFound = 2;
+ unsigned char tmp;
+ int i;
+ __dpmi_paddr fb;
+
+ switch (chip) {
+ case MATROX_MILL_ID:
+ ProbeSize = 8;
+ break;
+ }
+
+ if (_create_mmap(&fb, base, ProbeSize*1024*1024)) {
+ return 0;
+ }
+
+ /* turn MGA mode on - enable linear frame buffer (CRTCEXT3) */
+ mga_select();
+ mga_outb(M_CRTC_EXT_INDEX, 3);
+ tmp = mga_inb(M_CRTC_EXT_DATA);
+ mga_outb(M_CRTC_EXT_DATA, tmp | M_MGAMODE);
+
+ /* write, read and compare method */
+ for (i=ProbeSize; i>2; i-= 2) {
+ hwptr_pokeb(fb, i*1024*1024 - 1, 0xAA);
+ mga_select();
+ mga_outb(M_CRTC_INDEX, 0); /* flush the cache */
+ mga_inl(M_STATUS); /* delay */
+ mga_inl(M_STATUS); /* delay */
+ mga_inl(M_STATUS); /* delay */
+ if (hwptr_peekb(fb, i*1024*1024 - 1) == 0xAA) {
+ SizeFound = i;
+ break;
+ }
+ }
+
+ /* restore CRTCEXT3 state */
+ mga_select();
+ mga_outb(M_CRTC_EXT_INDEX, 3);
+ mga_outb(M_CRTC_EXT_DATA, tmp);
+
+ _destroy_mmap(&fb);
+
+ return SizeFound*1024*1024;
+}
+
+
+
+/* Desc: Frees all resources allocated by MGA init code.
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+void mga_hw_fini (void)
+{
+ int i;
+
+ pci_write_long(bus_id, 0x40, reg40);
+
+ for (i=0; i<4; i++) {
+ _destroy_mmap(&mgaptr.io_mem_map[i]);
+ }
+
+ _destroy_mmap(&mgaptr.linear_map);
+
+#if !MGA_FARPTR
+ if (dirty) {
+ __djgpp_nearptr_disable();
+ dirty = FALSE;
+ }
+#endif
+
+ matrox_id = 0;
+}
+
+
+
+/* Desc: Attempts to detect MGA.
+ *
+ * In :
+ * Out :
+ *
+ * Note: The first thing ever to be called. This is in charge of filling in
+ * the driver header with all the required information and function
+ * pointers. We do not yet have access to the video memory, so we can't
+ * talk directly to the card.
+ */
+int mga_hw_init (unsigned long *vram, int *interleave, char *name)
+{
+ int i;
+ unsigned long pci_base[2];
+
+ if (matrox_id) {
+ return matrox_id;
+ }
+
+#if !MGA_FARPTR
+ /* enable nearptr access */
+ if (_crt0_startup_flags & _CRT0_FLAG_NEARPTR) {
+ dirty = FALSE;
+ } else {
+ if (__djgpp_nearptr_enable() == 0)
+ return NULL;
+
+ dirty = TRUE;
+ }
+#endif
+
+ /* find PCI device */
+ matrox_id = 0;
+
+ for (bus_id=0, i=0; matrox_id_list[i]; i++) {
+ if (pci_find_device(matrox_id_list[i], MATROX_VENDOR_ID, 0, &bus_id)) {
+ matrox_id = matrox_id_list[i];
+ break;
+ }
+ }
+
+ /* set up the card name */
+ switch (matrox_id) {
+ case MATROX_MILL_ID:
+ if (name) strcpy(name, "Millennium");
+ break;
+ default:
+ matrox_id = 0;
+ return -1;
+ }
+
+ reg40 = pci_read_long(bus_id, 0x40);
+#if 0 /* overclock a little :) */
+ {
+ int rfhcnt = (reg40 >> 16) & 0xF;
+ if ((reg40 & 0x200000) && (rfhcnt < 0xC)) {
+ pci_write_long(bus_id, 0x40, (reg40 & 0xFFF0FFFF) | 0x000C0000);
+ }
+ }
+#endif
+
+ /* read hardware configuration data */
+ for (i=0; i<2; i++)
+ pci_base[i] = pci_read_long(bus_id, 16+i*4);
+
+ /* work out the linear framebuffer and MMIO addresses */
+ if (matrox_id == MATROX_MILL_ID) {
+ if (pci_base[0])
+ io_mem_base[0] = pci_base[0] & 0xFFFFC000;
+
+ if (pci_base[1])
+ linear_base = pci_base[1] & 0xFF800000;
+ }
+
+ if (!linear_base || !io_mem_base[0])
+ return NULL;
+
+ /* deal with the memory mapping crap */
+ io_mem_size[0] = 0x4000;
+
+ for (i=0; i<4; i++) {
+ if (io_mem_base[i]) {
+ if (_create_mmap(&mgaptr.io_mem_map[i], io_mem_base[i], io_mem_size[i])) {
+ mga_hw_fini();
+ return NULL;
+ }
+ }
+ }
+
+ *vram = linear_size = _mga_get_vram(matrox_id, linear_base);
+
+ if (_create_mmap(&mgaptr.linear_map, linear_base, linear_size)) {
+ mga_hw_fini();
+ return NULL;
+ }
+
+ /* fill in user data */
+ *interleave = linear_size > 2*1024*1024;
+
+ return matrox_id;
+}
+
+
+
+/* PCI routines added by SET */
+#define PCIAddr 0xCF8
+#define PCIData 0xCFC
+#define PCIEnable 0x80000000
+
+
+
+/* FindPCIDevice:
+ * Replacement for the INT 1A - PCI BIOS v2.0c+ - FIND PCI DEVICE, AX = B102h
+ *
+ * Note: deviceIndex is because a card can hold more than one PCI chip.
+ *
+ * Searches the board of the vendor supplied in vendorID with
+ * identification number deviceID and index deviceIndex (normally 0).
+ * The value returned in handle can be used to access the PCI registers
+ * of this board.
+ *
+ * Return: 1 if found 0 if not found.
+ */
+static int pci_find_device (int deviceID, int vendorID, int deviceIndex, int *handle)
+{
+ int model, vendor, card, device;
+ unsigned value, full_id, bus, busMax;
+
+ deviceIndex <<= 8;
+
+ /* for each PCI bus */
+ for (bus=0, busMax=0x10000; bus<busMax; bus+=0x10000) {
+
+ /* for each hardware device */
+ for (device=0, card=0; card<32; card++, device+=0x800) {
+ value = PCIEnable | bus | deviceIndex | device;
+ outportl(PCIAddr, value);
+ full_id = inportl(PCIData);
+
+ /* get the vendor and model ID */
+ vendor = full_id & 0xFFFF;
+ model = full_id >> 16;
+
+ if (vendor != 0xFFFF) {
+ /* is this the one we want? */
+ if ((deviceID == model) && (vendorID == vendor)) {
+ *handle = value;
+ return 1;
+ }
+
+ /* is it a bridge to a secondary bus? */
+ outportl(PCIAddr, value | 8);
+
+ if (((inportl(PCIData) >> 16) == 0x0600) || (full_id==0x00011011))
+ busMax += 0x10000;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+
+/* Desc:
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static unsigned long pci_read_long (int handle, int index)
+{
+ outportl(PCIAddr, PCIEnable | handle | index);
+ return inportl(PCIData);
+}
+
+
+
+/* Desc:
+ *
+ * In :
+ * Out :
+ *
+ * Note:
+ */
+static void pci_write_long (int handle, int index, unsigned long value)
+{
+ outportl(PCIAddr, PCIEnable | handle | index);
+ outportl(PCIData, value);
+}
diff --git a/src/mesa/drivers/dos/mga/mga_hw.h b/src/mesa/drivers/dos/mga/mga_hw.h
new file mode 100644
index 00000000000..246ed9c6ad7
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga_hw.h
@@ -0,0 +1,113 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W HW mapping
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_HW_included
+#define MGA_HW_included
+
+
+
+/* set this to zero to use near pointers */
+#define MGA_FARPTR 1
+
+
+
+/* access macros */
+#if MGA_FARPTR
+
+#include <sys/farptr.h>
+
+#define hwptr_pokeb(ptr, off, val) _farpokeb((ptr).selector, (ptr).offset32+(off), (val))
+#define hwptr_pokew(ptr, off, val) _farpokew((ptr).selector, (ptr).offset32+(off), (val))
+#define hwptr_pokel(ptr, off, val) _farpokel((ptr).selector, (ptr).offset32+(off), (val))
+
+#define hwptr_peekb(ptr, off) _farpeekb((ptr).selector, (ptr).offset32+(off))
+#define hwptr_peekw(ptr, off) _farpeekw((ptr).selector, (ptr).offset32+(off))
+#define hwptr_peekl(ptr, off) _farpeekl((ptr).selector, (ptr).offset32+(off))
+
+#define hwptr_select(ptr) _farsetsel((ptr).selector)
+#define hwptr_unselect(ptr) (ptr).selector = _fargetsel()
+
+#define hwptr_nspokeb(ptr, off, val) _farnspokeb((ptr).offset32+(off), (val))
+#define hwptr_nspokew(ptr, off, val) _farnspokew((ptr).offset32+(off), (val))
+#define hwptr_nspokel(ptr, off, val) _farnspokel((ptr).offset32+(off), (val))
+
+#define hwptr_nspeekb(ptr, off) _farnspeekb((ptr).offset32+(off))
+#define hwptr_nspeekw(ptr, off) _farnspeekw((ptr).offset32+(off))
+#define hwptr_nspeekl(ptr, off) _farnspeekl((ptr).offset32+(off))
+
+#else
+
+#define hwptr_pokeb(ptr, off, val) *((volatile unsigned char *)((ptr).offset32+(off))) = (val)
+#define hwptr_pokew(ptr, off, val) *((volatile unsigned short *)((ptr).offset32+(off))) = (val)
+#define hwptr_pokel(ptr, off, val) *((volatile unsigned long *)((ptr).offset32+(off))) = (val)
+
+#define hwptr_peekb(ptr, off) (*((volatile unsigned char *)((ptr).offset32+(off))))
+#define hwptr_peekw(ptr, off) (*((volatile unsigned short *)((ptr).offset32+(off))))
+#define hwptr_peekl(ptr, off) (*((volatile unsigned long *)((ptr).offset32+(off))))
+
+#define hwptr_select(ptr)
+#define hwptr_unselect(ptr)
+
+#define hwptr_nspokeb(ptr, off, val) *((volatile unsigned char *)((ptr).offset32+(off))) = (val)
+#define hwptr_nspokew(ptr, off, val) *((volatile unsigned short *)((ptr).offset32+(off))) = (val)
+#define hwptr_nspokel(ptr, off, val) *((volatile unsigned long *)((ptr).offset32+(off))) = (val)
+
+#define hwptr_nspeekb(ptr, off) (*((volatile unsigned char *)((ptr).offset32+(off))))
+#define hwptr_nspeekw(ptr, off) (*((volatile unsigned short *)((ptr).offset32+(off))))
+#define hwptr_nspeekl(ptr, off) (*((volatile unsigned long *)((ptr).offset32+(off))))
+
+#endif
+
+
+
+/* helpers for accessing the Matrox registers */
+#define mga_select() hwptr_select(mgaptr.io_mem_map[0])
+#define mga_inb(addr) hwptr_nspeekb(mgaptr.io_mem_map[0], addr)
+#define mga_inw(addr) hwptr_nspeekw(mgaptr.io_mem_map[0], addr)
+#define mga_inl(addr) hwptr_nspeekl(mgaptr.io_mem_map[0], addr)
+#define mga_outb(addr, val) hwptr_nspokeb(mgaptr.io_mem_map[0], addr, val)
+#define mga_outw(addr, val) hwptr_nspokew(mgaptr.io_mem_map[0], addr, val)
+#define mga_outl(addr, val) hwptr_nspokel(mgaptr.io_mem_map[0], addr, val)
+
+
+
+typedef struct MGA_HWPTR {
+ __dpmi_paddr io_mem_map[4], linear_map;
+} MGA_HWPTR;
+
+extern MGA_HWPTR mgaptr;
+
+void mga_hw_fini (void);
+int mga_hw_init (unsigned long *vram, int *interleave, char *name);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_mode.c b/src/mesa/drivers/dos/mga/mga_mode.c
new file mode 100644
index 00000000000..33f47a6486e
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga_mode.c
@@ -0,0 +1,231 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W mode switching
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#include <dpmi.h>
+#include <string.h>
+#include <stubinfo.h>
+#include <sys/exceptn.h>
+#include <sys/farptr.h>
+#include <sys/movedata.h>
+#include <sys/segments.h>
+
+#include "../internal.h"
+#include "mga_mode.h"
+
+
+
+static MGA_MODE oldmode;
+static MGA_MODE modes[64];
+
+
+
+/*
+ * VESA info
+ */
+#define V_SIGN 0
+#define V_MINOR 4
+#define V_MAJOR 5
+#define V_OEM_OFS 6
+#define V_OEM_SEG 8
+#define V_MODE_OFS 14
+#define V_MODE_SEG 16
+#define V_MEMORY 18
+
+/*
+ * mode info
+ */
+#define M_ATTR 0
+#define M_GRAN 4
+#define M_SCANLEN 16
+#define M_XRES 18
+#define M_YRES 20
+#define M_BPP 25
+#define M_RED 31
+#define M_GREEN 33
+#define M_BLUE 35
+#define M_PHYS_PTR 40
+
+
+
+/* Desc: get available modes
+ *
+ * In : -
+ * Out : linear modes list ptr
+ *
+ * Note: shouldn't use VESA...
+ */
+static MGA_MODE *_mga_mode_check (void)
+{
+ __dpmi_regs r;
+ word16 *p;
+ MGA_MODE *q;
+ char vesa_info[512], tmp[512];
+
+ _farpokel(_stubinfo->ds_selector, 0, 0x32454256);
+ r.x.ax = 0x4f00;
+ r.x.di = 0;
+ r.x.es = _stubinfo->ds_segment;
+ __dpmi_int(0x10, &r);
+ movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);
+ if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) {
+ return NULL;
+ }
+
+ p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS]));
+ q = modes;
+ do {
+ if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) {
+ break;
+ }
+
+ r.x.ax = 0x4f01;
+ r.x.cx = q->mode;
+ r.x.di = 512;
+ r.x.es = _stubinfo->ds_segment;
+ __dpmi_int(0x10, &r);
+ movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256);
+ switch (tmp[M_BPP]) {
+ case 16:
+ q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE];
+ break;
+ case 8:
+ case 15:
+ case 24:
+ case 32:
+ q->bpp = tmp[M_BPP];
+ break;
+ default:
+ q->bpp = 0;
+ }
+ if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp && (tmp[M_ATTR]&0x80)) {
+ q->xres = _16_ tmp[M_XRES];
+ q->yres = _16_ tmp[M_YRES];
+ q->mode |= 0x4000;
+ q++;
+ }
+ } while (TRUE);
+
+ return modes;
+}
+
+
+
+/* Desc: save current mode
+ *
+ * In : ptr to mode structure
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+static int _mga_mode_save (MGA_MODE *p)
+{
+ __asm("\n\
+ movw $0x4f03, %%ax \n\
+ int $0x10 \n\
+ movl %%ebx, %0 \n\
+ ":"=g"(p->mode)::"%eax", "%ebx");
+ return 0;
+}
+
+
+
+/* Desc: switch to specified mode
+ *
+ * In : ptr to mode structure, refresh rate
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+int mga_mode_switch (MGA_MODE *p, int refresh)
+{
+ if (oldmode.mode == 0) {
+ _mga_mode_save(&oldmode);
+ }
+ __asm("movw $0x4f02, %%ax; int $0x10"::"b"(p->mode):"%eax");
+ return 0;
+
+ (void)refresh; /* silence compiler warning */
+}
+
+
+
+/* Desc: restore to the mode prior to first call to `mga_switch'
+ *
+ * In : -
+ * Out : 0 if success
+ *
+ * Note: shouldn't use VESA...
+ */
+int mga_mode_restore (void)
+{
+ if (oldmode.mode != 0) {
+ __asm("movw $0x4f02, %%ax; int $0x10"::"b"(oldmode.mode):"%eax");
+ oldmode.mode = 0;
+ }
+ return 0;
+}
+
+
+
+/* Desc: return suitable mode
+ *
+ * In : width, height, bpp
+ * Out : ptr to mode structure
+ *
+ * Note: -
+ */
+MGA_MODE *mga_mode_find (int width, int height, int bpp)
+{
+ static MGA_MODE *q = NULL;
+
+ MGA_MODE *p;
+ unsigned int min;
+
+ if (q == NULL) {
+ if ((q = _mga_mode_check()) == NULL) {
+ return NULL;
+ }
+ }
+
+ /* search for a mode that fits our request */
+ for (min=-1, p=NULL; q->mode!=0xffff; q++) {
+ if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) {
+ if (min>=(unsigned)(q->xres*q->yres)) {
+ min = q->xres*q->yres;
+ p = q;
+ }
+ }
+ }
+
+ return p;
+}
diff --git a/src/mesa/drivers/dos/mga/mga_mode.h b/src/mesa/drivers/dos/mga/mga_mode.h
new file mode 100644
index 00000000000..4049bd8fd2d
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga_mode.h
@@ -0,0 +1,47 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W mode switching
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_MODE_included
+#define MGA_MODE_included
+
+typedef struct MGA_MODE {
+ int mode;
+ int xres, yres;
+ int bpp;
+} MGA_MODE;
+
+int mga_mode_switch (MGA_MODE *p, int refresh);
+int mga_mode_restore (void);
+MGA_MODE *mga_mode_find (int width, int height, int bpp);
+
+#endif
diff --git a/src/mesa/drivers/dos/mga/mga_reg.h b/src/mesa/drivers/dos/mga/mga_reg.h
new file mode 100644
index 00000000000..73d22de2b87
--- /dev/null
+++ b/src/mesa/drivers/dos/mga/mga_reg.h
@@ -0,0 +1,207 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.0
+ *
+ * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * DOS/DJGPP device driver v1.3 for Mesa 5.0 -- MGA2064W register mnemonics
+ *
+ * Copyright (c) 2003 - Borca Daniel
+ * Email : [email protected]
+ * Web : http://www.geocities.com/dborca
+ */
+
+
+#ifndef MGA_REG_H_included
+#define MGA_REG_H_included
+
+/* Matrox hardware registers: */
+#define M_AR0 0x1C60
+#define M_AR1 0x1C64
+#define M_AR2 0x1C68
+#define M_AR3 0x1C6C
+#define M_AR4 0x1C70
+#define M_AR5 0x1C74
+#define M_AR6 0x1C78
+#define M_BCOL 0x1C20
+#define M_CXBNDRY 0x1C80
+#define M_CXLEFT 0x1CA0
+#define M_CXRIGHT 0x1CA4
+#define M_DR0 0x1CC0
+#define M_DR2 0x1CC8
+#define M_DR3 0x1CCC
+#define M_DR4 0x1CD0
+#define M_DR6 0x1CD8
+#define M_DR7 0x1CDC
+#define M_DR8 0x1CE0
+#define M_DR10 0x1CE8
+#define M_DR11 0x1CEC
+#define M_DR12 0x1CF0
+#define M_DR14 0x1CF8
+#define M_DR15 0x1CFC
+#define M_DWGCTL 0x1C00
+#define M_FCOL 0x1C24
+#define M_FIFOSTATUS 0x1E10
+#define M_FXBNDRY 0x1C84
+#define M_FXLEFT 0x1CA8
+#define M_FXRIGHT 0x1CAC
+#define M_ICLEAR 0x1E18
+#define M_IEN 0x1E1C
+#define M_LEN 0x1C5C
+#define M_MACCESS 0x1C04
+#define M_OPMODE 0x1E54
+#define M_PAT0 0x1C10
+#define M_PAT1 0x1C14
+#define M_PITCH 0x1C8C
+#define M_PLNWT 0x1C1C
+#define M_RESET 0x1E40
+#define M_SGN 0x1C58
+#define M_SHIFT 0x1C50
+#define M_SRC0 0x1C30
+#define M_SRC1 0x1C34
+#define M_SRC2 0x1C38
+#define M_SRC3 0x1C3C
+#define M_STATUS 0x1E14
+#define M_VCOUNT 0x1E20
+#define M_XDST 0x1CB0
+#define M_XYEND 0x1C44
+#define M_XYSTRT 0x1C40
+#define M_YBOT 0x1C9C
+#define M_YDST 0x1C90
+#define M_YDSTLEN 0x1C88
+#define M_YDSTORG 0x1C94
+#define M_YTOP 0x1C98
+#define M_ZORG 0x1C0C
+
+#define M_EXEC 0x0100
+
+/* DWGCTL: opcod */
+#define M_DWG_LINE_OPEN 0x0
+#define M_DWG_AUTOLINE_OPEN 0x1
+#define M_DWG_LINE_CLOSE 0x2
+#define M_DWG_AUTOLINE_CLOSE 0x3
+#define M_DWG_TRAP 0x4
+#define M_DWG_TEXTURE_TRAP 0x5
+#define M_DWG_BITBLT 0x8
+#define M_DWG_FBITBLT 0xC
+#define M_DWG_ILOAD 0x9
+#define M_DWG_ILOAD_SCALE 0xD
+#define M_DWG_ILOAD_FILTER 0xF
+#define M_DWG_IDUMP 0xA
+
+/* DWGCTL: atype */
+#define M_DWG_RPL (0x0 << 4)
+#define M_DWG_RSTR (0x1 << 4)
+#define M_DWG_ZI (0x3 << 4)
+#define M_DWG_BLK (0x4 << 4)
+#define M_DWG_I (0x7 << 4)
+
+/* DWGCTL: linear */
+#define M_DWG_LINEAR (0x1 << 7)
+
+/* DWGCTL: zmode */
+#define M_DWG_NOZCMP (0x0 << 8)
+#define M_DWG_ZE (0x2 << 8)
+#define M_DWG_ZNE (0x3 << 8)
+#define M_DWG_ZLT (0x4 << 8)
+#define M_DWG_ZLTE (0x5 << 8)
+#define M_DWG_ZGT (0x6 << 8)
+#define M_DWG_ZGTE (0x7 << 8)
+
+/* DWGCTL: solid */
+#define M_DWG_SOLID (0x1 << 11)
+
+/* DWGCTL: arzero */
+#define M_DWG_ARZERO (0x1 << 12)
+
+/* DWGCTL: sgnzero */
+#define M_DWG_SGNZERO (0x1 << 13)
+
+/* DWGCTL: shiftzero */
+#define M_DWG_SHFTZERO (0x1 << 14)
+
+/* DWGCTL: bop */
+#define M_DWG_BOP_XOR (0x6 << 16)
+#define M_DWG_BOP_AND (0x8 << 16)
+#define M_DWG_BOP_SRC (0xC << 16)
+#define M_DWG_BOP_OR (0xE << 16)
+
+/* DWGCTL: trans */
+#define M_DWG_TRANS_0 (0x0 << 20)
+#define M_DWG_TRANS_1 (0x1 << 20)
+#define M_DWG_TRANS_2 (0x2 << 20)
+#define M_DWG_TRANS_3 (0x3 << 20)
+#define M_DWG_TRANS_4 (0x4 << 20)
+#define M_DWG_TRANS_5 (0x5 << 20)
+#define M_DWG_TRANS_6 (0x6 << 20)
+#define M_DWG_TRANS_7 (0x7 << 20)
+#define M_DWG_TRANS_8 (0x8 << 20)
+#define M_DWG_TRANS_9 (0x9 << 20)
+#define M_DWG_TRANS_A (0xA << 20)
+#define M_DWG_TRANS_B (0xB << 20)
+#define M_DWG_TRANS_C (0xC << 20)
+#define M_DWG_TRANS_D (0xD << 20)
+#define M_DWG_TRANS_E (0xE << 20)
+#define M_DWG_TRANS_F (0xF << 20)
+
+/* DWGCTL: bltmod */
+#define M_DWG_BMONOLEF (0x0 << 25)
+#define M_DWG_BMONOWF (0x4 << 25)
+#define M_DWG_BPLAN (0x1 << 25)
+#define M_DWG_BFCOL (0x2 << 25)
+#define M_DWG_BUYUV (0xE << 25)
+#define M_DWG_BU32BGR (0x3 << 25)
+#define M_DWG_BU32RGB (0x7 << 25)
+#define M_DWG_BU24BGR (0xB << 25)
+#define M_DWG_BU24RGB (0xF << 25)
+
+/* DWGCTL: pattern */
+#define M_DWG_PATTERN (0x1 << 29)
+
+/* DWGCTL: transc */
+#define M_DWG_TRANSC (0x1 << 30)
+
+/* OPMODE: */
+#define M_DMA_GENERAL (0x0 << 2)
+#define M_DMA_BLIT (0x1 << 2)
+#define M_DMA_VECTOR (0x2 << 2)
+
+/* SGN: */
+#define M_SDXL (0x1 << 1)
+#define M_SDXR (0x1 << 5)
+
+
+
+/* VGAREG */
+#define M_CRTC_INDEX 0x1FD4
+#define M_CRTC_DATA 0x1FD5
+
+#define M_CRTC_EXT_INDEX 0x1FDE
+#define M_CRTC_EXT_DATA 0x1FDF
+
+#define M_MISC_R 0x1FCC
+#define M_MISC_W 0x1FC2
+
+/* CRTCEXT3: */
+#define M_MGAMODE (0x1 << 7)
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 04:43:10 +0000