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[cadcdev-svn-commits] [SCM] branch master updated. 9726ac31349d72eb0af754f473799a398e1ab69a
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From: falcovorbis <fal...@us...> - 2024-09-28 01:09:16
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- Log -----------------------------------------------------------------
commit 9726ac31349d72eb0af754f473799a398e1ab69a
Author: Twada <166...@us...>
Date: Sat Sep 28 10:08:58 2024 +0900
Helper functions and examples for modifier volumes and Z clipping (#675)
* Initial commit
* romdisk fix
* modified: Makefile
modified: example.c
* modified: pvr_zclip.c
modified: pvr_zclip.h
* modified: example.c
modified: pvr_zclip.c
* Apply suggestions from code review
Co-authored-by: Falco Girgis <gyr...@gm...>
* modified: example.c
* Update examples/dreamcast/pvr/modifier_volume_zclip/example.c
Co-authored-by: Falco Girgis <gyr...@gm...>
---------
Co-authored-by: Twada2004 <Twa...@us...>
Co-authored-by: Falco Girgis <gyr...@gm...>
Co-authored-by: Donald Haase <qu...@ya...>
commit 1da9acd4c88143627615d28dd72d2453f8ade567
Author: Cole Hall <col...@gm...>
Date: Fri Sep 27 07:55:12 2024 +0100
Fix license link in README.md (#776)
-----------------------------------------------------------------------
Summary of changes:
README.md | 2 +-
.../modifier_volume_zclip}/Makefile | 6 +-
.../dreamcast/pvr/modifier_volume_zclip/example.c | 306 +++++++++
.../pvr/modifier_volume_zclip/pvr_zclip.c | 747 +++++++++++++++++++++
.../pvr/modifier_volume_zclip/pvr_zclip.h | 20 +
.../pvr/modifier_volume_zclip/romdisk/blocks.png | Bin 0 -> 86075 bytes
6 files changed, 1077 insertions(+), 4 deletions(-)
copy examples/dreamcast/{cpp/modplug_test => pvr/modifier_volume_zclip}/Makefile (75%)
create mode 100644 examples/dreamcast/pvr/modifier_volume_zclip/example.c
create mode 100644 examples/dreamcast/pvr/modifier_volume_zclip/pvr_zclip.c
create mode 100644 examples/dreamcast/pvr/modifier_volume_zclip/pvr_zclip.h
create mode 100644 examples/dreamcast/pvr/modifier_volume_zclip/romdisk/blocks.png
diff --git a/README.md b/README.md
index c0f154f5..10618ec6 100644
--- a/README.md
+++ b/README.md
@@ -53,7 +53,7 @@ A beginner's guide to development for the Sega Dreamcast along with detailed ins
# Licensing
KallistiOS itself is licensed under the BSD-like **KOS License**. **Attribution is not optional**. Additionally, this distribution contains code licensed under various free software licenses.
-See [LICENSE.md](doc/LICENSE.md) for more information on licensing, as well as [LICENSE.KOS](doc/LICENSE.KOS) for the actual **KOS License** text.
+See [LICENSE.md](doc/LICENSE.md) for more information on licensing, as well as [LICENSE.KOS](doc/license/LICENSE.KOS) for the actual **KOS License** text.
# Examples
Once you've set up the environment and are ready to begin developing, a good place to start learning is the examples directory, which provides demos for the various KOS APIs and for interacting with the Dreamcast's hardware. Examples include:
diff --git a/examples/dreamcast/cpp/modplug_test/Makefile b/examples/dreamcast/pvr/modifier_volume_zclip/Makefile
similarity index 75%
copy from examples/dreamcast/cpp/modplug_test/Makefile
copy to examples/dreamcast/pvr/modifier_volume_zclip/Makefile
index bb417eb7..49e7e523 100644
--- a/examples/dreamcast/cpp/modplug_test/Makefile
+++ b/examples/dreamcast/pvr/modifier_volume_zclip/Makefile
@@ -1,5 +1,5 @@
TARGET = example.elf
-OBJS = example.o romdisk.o
+OBJS = example.o pvr_zclip.o romdisk.o
KOS_ROMDISK_DIR = romdisk
all: rm-elf $(TARGET)
@@ -7,13 +7,13 @@ all: rm-elf $(TARGET)
include $(KOS_BASE)/Makefile.rules
clean: rm-elf
- -rm -f $(OBJS)
+ -rm -f $(OBJS)
rm-elf:
-rm -f $(TARGET) romdisk.*
$(TARGET): $(OBJS)
- kos-c++ -o $(TARGET) $(OBJS) -lmodplug
+ kos-cc -o $(TARGET) $(OBJS) -lpng -lz
run: $(TARGET)
$(KOS_LOADER) $(TARGET)
diff --git a/examples/dreamcast/pvr/modifier_volume_zclip/example.c b/examples/dreamcast/pvr/modifier_volume_zclip/example.c
new file mode 100644
index 00000000..564137bc
--- /dev/null
+++ b/examples/dreamcast/pvr/modifier_volume_zclip/example.c
@@ -0,0 +1,306 @@
+/*
+ * KallistiOS ##version##
+ *
+ * examples/dreamcast/pvr/modifier_volume_zclip/example.c
+ * Copyright (C) 2024 Twada
+ *
+ * This example demonstrates how to perform Z-clipping on modifier volumes.
+ *
+ * by Twada
+ */
+#include <kos.h>
+#include <png/png.h>
+#include <zlib/zlib.h>
+#include "pvr_zclip.h"
+
+/* textures */
+static pvr_ptr_t box_tex;
+
+static void mul_screen(float width, float height)
+{
+ matrix_t d = {
+ {1.0f, 0.0f, 0.0f, 0.0f},
+ {0.0f, 1.0f, 0.0f, 0.0f},
+ {0.0f, 0.0f, 1.0f, 0.0f},
+ {0.0f, 0.0f, 0.0f, 1.0f}};
+ d[0][0] = width * 0.5f;
+ d[1][1] = -height * 0.5f;
+ d[3][0] = width * 0.5f;
+ d[3][1] = height * 0.5f;
+ mat_apply(&d);
+}
+
+static void mul_projection(float fov, float aspect, float znear)
+{
+ matrix_t d = {
+ {1.0f, 0.0f, 0.0f, 0.0f},
+ {0.0f, 1.0f, 0.0f, 0.0f},
+ {0.0f, 0.0f, 1.0f, 0.0f},
+ {0.0f, 0.0f, 0.0f, 1.0f}};
+ float s = 1.0f / ftan(fov * 0.5f);
+ d[0][0] = s / aspect;
+ d[1][1] = s;
+ d[2][2] = 0.0f;
+ d[2][3] = -1.0f;
+ d[3][2] = znear;
+ d[3][3] = 0.0f;
+ mat_apply(&d);
+}
+
+static void draw_modifier(matrix_t *pvm)
+{
+ pvr_modifier_vol_t vol[12] = {
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0, 0, 0, 0},
+ };
+ float vert[8][3] = {
+ {-1.0f, -1.0f, 1.0f},
+ {-1.0f, -1.0f, -1.0f},
+ {1.0f, -1.0f, 1.0f},
+ {1.0f, -1.0f, -1.0f},
+ {-1.0f, 1.0f, 1.0f},
+ {-1.0f, 1.0f, -1.0f},
+ {1.0f, 1.0f, 1.0f},
+ {1.0f, 1.0f, -1.0f},
+ };
+ float transform[8][3];
+ int index[12][3] = {
+ {1, 0, 3}, /* Bottom */
+ {0, 3, 2},
+ {4, 5, 6}, /* Top */
+ {5, 6, 7},
+ {0, 4, 2}, /* Front */
+ {4, 2, 6},
+ {2, 6, 3}, /* Right */
+ {6, 3, 7},
+ {3, 7, 1}, /* Back */
+ {7, 1, 5},
+ {1, 5, 0}, /* Left */
+ {5, 0, 4}};
+ pvr_mod_hdr_t hdr;
+ static float ry = 0.0f;
+ /* Vertex transform */
+ ry += 0.01;
+ mat_identity();
+ mat_apply(pvm);
+ mat_translate(-1.0f, 0.25f, 1.0f);
+ mat_rotate(0.0f, ry, 0.0f);
+ mat_scale(2.0f, 2.0f, 2.0f);
+ for (int i = 0; i < 8; i++)
+ {
+ transform[i][0] = vert[i][0];
+ transform[i][1] = vert[i][1];
+ transform[i][2] = vert[i][2];
+ mat_trans_single3(transform[i][0], transform[i][1], transform[i][2]);
+ }
+ /* Face set */
+ for (int i = 0; i < 12; i++)
+ {
+ vol[i].ax = transform[index[i][0]][0];
+ vol[i].ay = transform[index[i][0]][1];
+ vol[i].az = transform[index[i][0]][2];
+ vol[i].bx = transform[index[i][1]][0];
+ vol[i].by = transform[index[i][1]][1];
+ vol[i].bz = transform[index[i][1]][2];
+ vol[i].cx = transform[index[i][2]][0];
+ vol[i].cy = transform[index[i][2]][1];
+ vol[i].cz = transform[index[i][2]][2];
+ }
+ pvr_mod_compile(&hdr, PVR_LIST_OP_MOD, PVR_MODIFIER_INCLUDE_LAST_POLY, PVR_CULLING_SMALL);
+ hdr.cmd |= (1 << 6); /* Last poly */
+ pvr_modifier_commit_zclip(&hdr, vol, 12);
+}
+
+static void draw_box(matrix_t *pvm)
+{
+ pvr_vertex_t poly[18] = {
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffffffff, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xffffffff, 0x00000000},
+ };
+ float vert[8][3] = {
+ {-1.0f, -1.0f, 1.0f},
+ {-1.0f, -1.0f, -1.0f},
+ {1.0f, -1.0f, 1.0f},
+ {1.0f, -1.0f, -1.0f},
+ {-1.0f, 1.0f, 1.0f},
+ {-1.0f, 1.0f, -1.0f},
+ {1.0f, 1.0f, 1.0f},
+ {1.0f, 1.0f, -1.0f},
+ };
+ float transform[8][3];
+ int index[18] = {
+ 1, 0, 3, -2,
+ 4, 5, 6, -7,
+ 0, 4, 2, 6, 3, 7, 1, 5, 0, -4};
+ pvr_poly_cxt_t cxt;
+ pvr_poly_hdr_t hdr;
+ /* Vertex transform */
+ mat_identity();
+ mat_apply(pvm);
+ mat_translate(1.0f, 2.0f, -1.0f);
+ mat_scale(2.0f, 2.0f, 2.0f);
+ for (int i = 0; i < 8; i++)
+ {
+ transform[i][0] = vert[i][0];
+ transform[i][1] = vert[i][1];
+ transform[i][2] = vert[i][2];
+ mat_trans_single3(transform[i][0], transform[i][1], transform[i][2]);
+ }
+ /* Face set */
+ for (int i = 0; i < 18; i++)
+ {
+ int idx = index[i];
+ if (idx < 0)
+ {
+ poly[i].flags = PVR_CMD_VERTEX_EOL;
+ idx = -idx;
+ }
+ else
+ {
+ poly[i].flags = PVR_CMD_VERTEX;
+ }
+ poly[i].x = transform[idx][0];
+ poly[i].y = transform[idx][1];
+ poly[i].z = transform[idx][2];
+ }
+ pvr_poly_cxt_txr(&cxt, PVR_LIST_OP_POLY, PVR_TXRFMT_RGB565, 256, 256, box_tex, PVR_FILTER_BILINEAR);
+ pvr_poly_compile(&hdr, &cxt);
+ hdr.cmd |= (1 << 7); /* PVR_MODIFIER_CHEAP_SHADOW */
+ pvr_prim(&hdr, sizeof(hdr));
+ pvr_vertex_commit_zclip(poly, 18);
+}
+
+static void draw_plane(matrix_t *pvm)
+{
+ pvr_poly_cxt_t cxt;
+ pvr_poly_hdr_t hdr;
+ pvr_vertex_t poly[4] = {
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0xffff0000, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0xff00ff00, 0x00000000},
+ {PVR_CMD_VERTEX, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0xff0000ff, 0x00000000},
+ {PVR_CMD_VERTEX_EOL, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0xffffffff, 0x00000000},
+ };
+ float vert[4][3] = {
+ {-5.0f, 0.0f, 5.0f},
+ {-5.0f, 0.0f, -5.0f},
+ {5.0f, 0.0f, 5.0f},
+ {5.0f, 0.0f, -5.0f}};
+ int i;
+ mat_identity();
+ mat_apply(pvm);
+ for (i = 0; i < 4; i++)
+ {
+ poly[i].x = vert[i][0];
+ poly[i].y = vert[i][1];
+ poly[i].z = vert[i][2];
+ mat_trans_single3(poly[i].x, poly[i].y, poly[i].z);
+ }
+ pvr_poly_cxt_col(&cxt, PVR_LIST_OP_POLY);
+ pvr_poly_compile(&hdr, &cxt);
+ hdr.cmd |= (1 << 7); /* PVR_MODIFIER_CHEAP_SHADOW */
+ pvr_prim(&hdr, sizeof(hdr));
+ pvr_vertex_commit_zclip(poly, 4);
+}
+
+int main(int argc, char* argv[])
+{
+ pvr_init_params_t params = {
+ /* Enable opaque and translucent polygons with size 16 */
+ .opb_sizes = {PVR_BINSIZE_16, PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_0, PVR_BINSIZE_0},
+ .vertex_buf_size = 512 * 1024, /* Vertex buffer size 512K */
+ .dma_enabled = 0, /* No DMA */
+ .fsaa_enabled = 0, /* No FSAA */
+ .autosort_disabled = 0, /* Translucent Autosort enabled. */
+ .opb_overflow_count = 3 /* Extra OPBs */
+ };
+ matrix_t cam_pvm;
+ point_t cam_pos = {0.0f, 0.0f, 1.0f, 1.0f};
+ point_t cam_tar = {0.0f, 0.0f, 0.0f, 1.0f};
+ point_t cam_up = {0.0f, 1.0f, 0.0f, 1.0f};
+ int done = 0;
+ float dy = 0.0f;
+ float dis = 5.0f;
+ float high = 2.0f;
+
+ /* init kos */
+ pvr_init(¶ms);
+ pvr_set_bg_color(0, 0.5f, 1.0f);
+ /* Enable cheap shadow */
+ pvr_set_shadow_scale(1, 0.5f);
+
+ /* init plane */
+ box_tex = pvr_mem_malloc(256 * 256 * 2);
+ png_to_texture("/rd/blocks.png", box_tex, PNG_NO_ALPHA);
+
+ /* keep drawing frames until start is pressed */
+ while (!done)
+ {
+ maple_device_t *dev = maple_enum_type(0, MAPLE_FUNC_CONTROLLER);
+ if (dev)
+ {
+
+ cont_state_t *st = (cont_state_t *)maple_dev_status(dev);
+ dy += (float)st->joyx * (0.1f / 127.0f);
+ high -= (float)st->joyy * (0.25f / 127.0f);
+ if (st->rtrig)
+ dis -= (float)st->rtrig * 0.001f;
+ if (st->ltrig)
+ dis += (float)st->ltrig * 0.001f;
+ cam_pos.x = fsin(dy) * dis;
+ cam_pos.y = high;
+ cam_pos.z = fcos(dy) * dis;
+
+ if (st->buttons & CONT_START)
+ done = 1;
+ }
+ /* set camera */
+ mat_identity();
+ mul_screen(640.0f, 480.0f);
+ mul_projection((3.14159265f / 3.0f), (640.0f / 480.0f), 0.125f);
+ mat_lookat(&cam_pos, &cam_tar, &cam_up);
+ mat_store(&cam_pvm);
+
+ pvr_wait_ready();
+ pvr_scene_begin();
+
+ pvr_list_begin(PVR_LIST_OP_POLY);
+ draw_plane(&cam_pvm);
+ draw_box(&cam_pvm);
+ pvr_list_finish();
+
+ pvr_list_begin(PVR_LIST_OP_MOD);
+ draw_modifier(&cam_pvm);
+ pvr_list_finish();
+
+ pvr_scene_finish();
+ }
+ pvr_mem_free(box_tex);
+
+ return 0;
+}
diff --git a/examples/dreamcast/pvr/modifier_volume_zclip/pvr_zclip.c b/examples/dreamcast/pvr/modifier_volume_zclip/pvr_zclip.c
new file mode 100644
index 00000000..796ede85
--- /dev/null
+++ b/examples/dreamcast/pvr/modifier_volume_zclip/pvr_zclip.c
@@ -0,0 +1,747 @@
+#include "pvr_zclip.h"
+
+static void vert_commit(pvr_vertex_t *dest, pvr_vertex_t *src, int eos)
+{
+ asm volatile(
+ "fschg\n\t"
+ "add #14, %[e]\n\t"
+ "fmov @%[s]+, dr0\n\t"
+ "shld %[shift], %[e]\n\t"
+ "fmov @%[s]+, dr2\n\t"
+ "lds %[e], fpul\n\t"
+ "fmov @%[s]+, dr4\n\t"
+ "add #32, %[d]\n\t"
+ "fmov @%[s]+, dr6\n\t"
+ "fsts fpul, fr0\n\t"
+ "fmov dr6,@-%[d]\n\t"
+ "fmov dr4,@-%[d]\n\t"
+ "fmov dr2,@-%[d]\n\t"
+ "fmov dr0,@-%[d]\n\t"
+ "pref @%[d]\n\t"
+ "fschg\n"
+ : [d] "+&r"(dest), [s] "+&r"(src), [e] "+r"(eos)
+ : [shift] "r"(28)
+ : "fpul", "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7");
+}
+
+static void inter_vert_commit(pvr_vertex_t *dest, pvr_vertex_t *inside, pvr_vertex_t *outside, int eos)
+{
+ unsigned int in_rb;
+ unsigned int in_ag;
+ unsigned int out_rb;
+ unsigned int out_ag;
+ asm volatile(
+ "fschg\n\t"
+
+ "fmov.d @%[i]+, dr2\n\t"
+ "fmov.d @%[i]+, dr4\n\t"
+ "fmov.d @%[o]+, dr6\n\t"
+ "fmov.d @%[o]+, dr8\n\t"
+
+ "fcmp/gt fr5, fr9\n\t"
+ "add #32, %[d]\n\t"
+ "fmul fr5, fr5\n\t"
+ "mov #28, %[rb0]\n\t"
+ "fsrra fr5\n\t"
+ "add #14, %[e]\n\t"
+ "fmul fr9, fr9\n\t"
+ "shld %[rb0], %[e]\n\t"
+ "fsrra fr9\n\t"
+ "lds %[e], fpul\n\t"
+ "bt/s 1f\n\t"
+ "fsts fpul, fr2\n\t"
+ "fneg fr9\n\t"
+ "1:\n\t"
+
+ "fmul fr5, fr3\n\t"
+ "fmul fr5, fr4\n\t"
+ "fmul fr9, fr7\n\t"
+ "fmul fr9, fr8\n\t"
+
+ "fneg fr9\n\t"
+ "fadd fr5, fr9\n\t"
+ "fldi1 fr0\n\t"
+ "fmul fr9, fr9\n\t"
+ "fneg fr0\n\t"
+ "fsrra fr9\n\t"
+ "fadd fr5, fr0\n\t"
+ "fmul fr9, fr0\n\t"
+
+ "fsub fr3, fr7\n\t"
+ "fsub fr4, fr8\n\t"
+ "fmac fr0, fr7, fr3\n\t"
+ "fmac fr0, fr8, fr4\n\t"
+ "fldi1 fr5\n\t"
+
+ "fmov.d @%[i]+, dr6\n\t"
+ "fmov.d @%[o]+, dr8\n\t"
+ "fsub fr6, fr8\n\t"
+ "fsub fr7, fr9\n\t"
+ "fmac fr0, fr8, fr6\n\t"
+ "fmac fr0, fr9, fr7\n\t"
+
+ "mov #-1, %[e]\n\t"
+ "extu.b %[e], %[e]\n\t"
+ "lds %[e], fpul\n\t"
+ "float fpul, fr1\n\t"
+ "fmul fr0, fr1\n\t"
+ "ftrc fr1, fpul\n\t"
+ "sts fpul, %[e]\n\t"
+
+ "mov.l @(4, %[i]), %[rb0]\n\t"
+ "mov %[rb0], %[ag0]\n\t"
+ "and %[m], %[rb0]\n\t"
+ "shlr8 %[ag0]\n\t"
+ "mov.l @(4, %[o]), %[rb1]\n\t"
+ "and %[m], %[ag0]\n\t"
+ "mov %[rb1], %[ag1]\n\t"
+ "and %[m], %[rb1]\n\t"
+ "shlr8 %[ag1]\n\t"
+ "and %[m], %[ag1]\n\t"
+
+ "sub %[ag0], %[ag1]\n\t"
+ "mul.l %[e], %[ag1]\n\t"
+ "sub %[rb0], %[rb1]\n\t"
+ "sts macl, %[ag1]\n\t"
+ "shlr8 %[ag1]\n\t"
+ "add %[ag1], %[ag0]\n\t"
+ "mul.l %[e], %[rb1]\n\t"
+ "and %[m], %[ag0]\n\t"
+ "shll8 %[ag0]\n\t"
+ "sts macl, %[rb1]\n\t"
+ "shlr8 %[rb1]\n\t"
+ "add %[rb1], %[rb0]\n\t"
+ "and %[m], %[rb0]\n\t"
+ "or %[ag0], %[rb0]\n"
+ "mov.l %[rb0], @-%[d]\n\t"
+
+ "mov.l @%[i], %[rb0]\n\t"
+ "mov %[rb0], %[ag0]\n\t"
+ "and %[m], %[rb0]\n\t"
+ "shlr8 %[ag0]\n\t"
+ "mov.l @%[o], %[rb1]\n\t"
+ "and %[m], %[ag0]\n\t"
+ "mov %[rb1], %[ag1]\n\t"
+ "and %[m], %[rb1]\n\t"
+ "shlr8 %[ag1]\n\t"
+ "and %[m], %[ag1]\n\t"
+
+ "sub %[ag0], %[ag1]\n\t"
+ "mul.l %[e], %[ag1]\n\t"
+ "sub %[rb0], %[rb1]\n\t"
+ "sts macl, %[ag1]\n\t"
+ "shlr8 %[ag1]\n\t"
+ "add %[ag1], %[ag0]\n\t"
+ "mul.l %[e], %[rb1]\n\t"
+ "and %[m], %[ag0]\n\t"
+ "shll8 %[ag0]\n\t"
+ "sts macl, %[rb1]\n\t"
...<truncated>...
hooks/post-receive
--
A pseudo Operating System for the Dreamcast.
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