src/ds/gx.c (view raw)
1/* Copyright (c) 2013-2017 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include <mgba/internal/ds/gx.h>
7
8#include <mgba/internal/ds/ds.h>
9#include <mgba/internal/ds/io.h>
10
11mLOG_DEFINE_CATEGORY(DS_GX, "DS GX", "ds.gx");
12
13#define DS_GX_FIFO_SIZE 256
14#define DS_GX_PIPE_SIZE 4
15
16static void DSGXDummyRendererInit(struct DSGXRenderer* renderer);
17static void DSGXDummyRendererReset(struct DSGXRenderer* renderer);
18static void DSGXDummyRendererDeinit(struct DSGXRenderer* renderer);
19static void DSGXDummyRendererInvalidateTex(struct DSGXRenderer* renderer, int slot);
20static void DSGXDummyRendererSetRAM(struct DSGXRenderer* renderer, struct DSGXVertex* verts, struct DSGXPolygon* polys, unsigned polyCount, bool wSort);
21static void DSGXDummyRendererDrawScanline(struct DSGXRenderer* renderer, int y);
22static void DSGXDummyRendererGetScanline(struct DSGXRenderer* renderer, int y, const color_t** output);
23
24static void DSGXWriteFIFO(struct DSGX* gx, struct DSGXEntry entry);
25
26static bool _boxTestVertex(struct DSGX* gx, struct DSGXVertex* vertex);
27
28static const int32_t _gxCommandCycleBase[DS_GX_CMD_MAX] = {
29 [DS_GX_CMD_NOP] = 0,
30 [DS_GX_CMD_MTX_MODE] = 2,
31 [DS_GX_CMD_MTX_PUSH] = 34,
32 [DS_GX_CMD_MTX_POP] = 72,
33 [DS_GX_CMD_MTX_STORE] = 34,
34 [DS_GX_CMD_MTX_RESTORE] = 72,
35 [DS_GX_CMD_MTX_IDENTITY] = 38,
36 [DS_GX_CMD_MTX_LOAD_4x4] = 68,
37 [DS_GX_CMD_MTX_LOAD_4x3] = 60,
38 [DS_GX_CMD_MTX_MULT_4x4] = 70,
39 [DS_GX_CMD_MTX_MULT_4x3] = 62,
40 [DS_GX_CMD_MTX_MULT_3x3] = 56,
41 [DS_GX_CMD_MTX_SCALE] = 44,
42 [DS_GX_CMD_MTX_TRANS] = 44,
43 [DS_GX_CMD_COLOR] = 2,
44 [DS_GX_CMD_NORMAL] = 18,
45 [DS_GX_CMD_TEXCOORD] = 2,
46 [DS_GX_CMD_VTX_16] = 18,
47 [DS_GX_CMD_VTX_10] = 16,
48 [DS_GX_CMD_VTX_XY] = 16,
49 [DS_GX_CMD_VTX_XZ] = 16,
50 [DS_GX_CMD_VTX_YZ] = 16,
51 [DS_GX_CMD_VTX_DIFF] = 16,
52 [DS_GX_CMD_POLYGON_ATTR] = 2,
53 [DS_GX_CMD_TEXIMAGE_PARAM] = 2,
54 [DS_GX_CMD_PLTT_BASE] = 2,
55 [DS_GX_CMD_DIF_AMB] = 8,
56 [DS_GX_CMD_SPE_EMI] = 8,
57 [DS_GX_CMD_LIGHT_VECTOR] = 12,
58 [DS_GX_CMD_LIGHT_COLOR] = 2,
59 [DS_GX_CMD_SHININESS] = 64,
60 [DS_GX_CMD_BEGIN_VTXS] = 2,
61 [DS_GX_CMD_END_VTXS] = 2,
62 [DS_GX_CMD_SWAP_BUFFERS] = 784,
63 [DS_GX_CMD_VIEWPORT] = 2,
64 [DS_GX_CMD_BOX_TEST] = 206,
65 [DS_GX_CMD_POS_TEST] = 18,
66 [DS_GX_CMD_VEC_TEST] = 10,
67};
68
69static const int32_t _gxCommandParams[DS_GX_CMD_MAX] = {
70 [DS_GX_CMD_MTX_MODE] = 1,
71 [DS_GX_CMD_MTX_POP] = 1,
72 [DS_GX_CMD_MTX_STORE] = 1,
73 [DS_GX_CMD_MTX_RESTORE] = 1,
74 [DS_GX_CMD_MTX_LOAD_4x4] = 16,
75 [DS_GX_CMD_MTX_LOAD_4x3] = 12,
76 [DS_GX_CMD_MTX_MULT_4x4] = 16,
77 [DS_GX_CMD_MTX_MULT_4x3] = 12,
78 [DS_GX_CMD_MTX_MULT_3x3] = 9,
79 [DS_GX_CMD_MTX_SCALE] = 3,
80 [DS_GX_CMD_MTX_TRANS] = 3,
81 [DS_GX_CMD_COLOR] = 1,
82 [DS_GX_CMD_NORMAL] = 1,
83 [DS_GX_CMD_TEXCOORD] = 1,
84 [DS_GX_CMD_VTX_16] = 2,
85 [DS_GX_CMD_VTX_10] = 1,
86 [DS_GX_CMD_VTX_XY] = 1,
87 [DS_GX_CMD_VTX_XZ] = 1,
88 [DS_GX_CMD_VTX_YZ] = 1,
89 [DS_GX_CMD_VTX_DIFF] = 1,
90 [DS_GX_CMD_POLYGON_ATTR] = 1,
91 [DS_GX_CMD_TEXIMAGE_PARAM] = 1,
92 [DS_GX_CMD_PLTT_BASE] = 1,
93 [DS_GX_CMD_DIF_AMB] = 1,
94 [DS_GX_CMD_SPE_EMI] = 1,
95 [DS_GX_CMD_LIGHT_VECTOR] = 1,
96 [DS_GX_CMD_LIGHT_COLOR] = 1,
97 [DS_GX_CMD_SHININESS] = 32,
98 [DS_GX_CMD_BEGIN_VTXS] = 1,
99 [DS_GX_CMD_SWAP_BUFFERS] = 1,
100 [DS_GX_CMD_VIEWPORT] = 1,
101 [DS_GX_CMD_BOX_TEST] = 3,
102 [DS_GX_CMD_POS_TEST] = 2,
103 [DS_GX_CMD_VEC_TEST] = 1,
104};
105
106static struct DSGXRenderer dummyRenderer = {
107 .init = DSGXDummyRendererInit,
108 .reset = DSGXDummyRendererReset,
109 .deinit = DSGXDummyRendererDeinit,
110 .invalidateTex = DSGXDummyRendererInvalidateTex,
111 .setRAM = DSGXDummyRendererSetRAM,
112 .drawScanline = DSGXDummyRendererDrawScanline,
113 .getScanline = DSGXDummyRendererGetScanline,
114};
115
116static void _pullPipe(struct DSGX* gx) {
117 if (CircleBufferSize(&gx->fifo) >= sizeof(struct DSGXEntry)) {
118 struct DSGXEntry entry = { 0 };
119 CircleBufferRead(&gx->fifo, &entry, sizeof(entry));
120 CircleBufferWrite(&gx->pipe, &entry, sizeof(entry));
121 }
122 if (CircleBufferSize(&gx->fifo) >= sizeof(struct DSGXEntry)) {
123 struct DSGXEntry entry = { 0 };
124 CircleBufferRead(&gx->fifo, &entry, sizeof(entry));
125 CircleBufferWrite(&gx->pipe, &entry, sizeof(entry));
126 }
127}
128
129static void _updateClipMatrix(struct DSGX* gx) {
130 DSGXMtxMultiply(&gx->clipMatrix, &gx->posMatrix, &gx->projMatrix);
131 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_00 >> 1] = gx->clipMatrix.m[0];
132 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_01 >> 1] = gx->clipMatrix.m[0] >> 16;
133 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_02 >> 1] = gx->clipMatrix.m[1];
134 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_03 >> 1] = gx->clipMatrix.m[1] >> 16;
135 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_04 >> 1] = gx->clipMatrix.m[2];
136 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_05 >> 1] = gx->clipMatrix.m[2] >> 16;
137 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_06 >> 1] = gx->clipMatrix.m[3];
138 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_07 >> 1] = gx->clipMatrix.m[3] >> 16;
139 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_08 >> 1] = gx->clipMatrix.m[4];
140 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_09 >> 1] = gx->clipMatrix.m[4] >> 16;
141 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0A >> 1] = gx->clipMatrix.m[5];
142 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0B >> 1] = gx->clipMatrix.m[5] >> 16;
143 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0C >> 1] = gx->clipMatrix.m[6];
144 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0D >> 1] = gx->clipMatrix.m[6] >> 16;
145 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0E >> 1] = gx->clipMatrix.m[7];
146 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_0F >> 1] = gx->clipMatrix.m[7] >> 16;
147 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_10 >> 1] = gx->clipMatrix.m[8];
148 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_11 >> 1] = gx->clipMatrix.m[8] >> 16;
149 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_12 >> 1] = gx->clipMatrix.m[9];
150 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_13 >> 1] = gx->clipMatrix.m[9] >> 16;
151 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_14 >> 1] = gx->clipMatrix.m[10];
152 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_15 >> 1] = gx->clipMatrix.m[10] >> 16;
153 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_16 >> 1] = gx->clipMatrix.m[11];
154 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_17 >> 1] = gx->clipMatrix.m[11] >> 16;
155 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_18 >> 1] = gx->clipMatrix.m[12];
156 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_19 >> 1] = gx->clipMatrix.m[12] >> 16;
157 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1A >> 1] = gx->clipMatrix.m[13];
158 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1B >> 1] = gx->clipMatrix.m[13] >> 16;
159 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1C >> 1] = gx->clipMatrix.m[14];
160 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1D >> 1] = gx->clipMatrix.m[14] >> 16;
161 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1E >> 1] = gx->clipMatrix.m[15];
162 gx->p->memory.io9[DS9_REG_CLIPMTX_RESULT_1F >> 1] = gx->clipMatrix.m[15] >> 16;
163}
164
165static inline int32_t _lerp(int32_t x0, int32_t x1, int32_t q, int64_t r) {
166 int64_t x = x1 - x0;
167 x *= q;
168 x /= r;
169 x += x0;
170 return x;
171}
172
173static int _cohenSutherlandCode(const struct DSGXVertex* v) {
174 int code = 0;
175 if (v->viewCoord[0] < -v->viewCoord[3]) {
176 code |= 1 << 0;
177 } else if (v->viewCoord[0] > v->viewCoord[3]) {
178 code |= 2 << 0;
179 }
180 if (v->viewCoord[1] < -v->viewCoord[3]) {
181 code |= 1 << 2;
182 } else if (v->viewCoord[1] > v->viewCoord[3]) {
183 code |= 2 << 2;
184 }
185 if (v->viewCoord[2] < -v->viewCoord[3]) {
186 code |= 1 << 4;
187 } else if (v->viewCoord[2] > v->viewCoord[3]) {
188 code |= 2 << 4;
189 }
190 return code;
191}
192
193static bool _lerpVertex(const struct DSGXVertex* v0, const struct DSGXVertex* v1, struct DSGXVertex* out, int32_t q, int64_t r) {
194 if (!r) {
195 return false;
196 }
197 int cr0 = (v0->color) & 0x1F;
198 int cg0 = (v0->color >> 5) & 0x1F;
199 int cb0 = (v0->color >> 10) & 0x1F;
200 int cr1 = (v1->color) & 0x1F;
201 int cg1 = (v1->color >> 5) & 0x1F;
202 int cb1 = (v1->color >> 10) & 0x1F;
203 cr0 = _lerp(cr0, cr1, q, r) & 0x1F;
204 cg0 = _lerp(cg0, cg1, q, r) & 0x1F;
205 cb0 = _lerp(cb0, cb1, q, r) & 0x1F;
206 out->color = cr0 | (cg0 << 5) | (cb0 << 10);
207
208 out->viewCoord[0] = _lerp(v0->viewCoord[0], v1->viewCoord[0], q, r);
209 out->viewCoord[1] = _lerp(v0->viewCoord[1], v1->viewCoord[1], q, r);
210 out->viewCoord[2] = _lerp(v0->viewCoord[2], v1->viewCoord[2], q, r);
211 out->viewCoord[3] = _lerp(v0->viewCoord[3], v1->viewCoord[3], q, r);
212
213 out->vs = _lerp(v0->vs, v1->vs, q, r);
214 out->vt = _lerp(v0->vt, v1->vt, q, r);
215 return true;
216}
217
218static bool _lerpVertexP(const struct DSGXVertex* v0, const struct DSGXVertex* v1, struct DSGXVertex* out, int plane, int sign) {
219 int32_t q = v0->viewCoord[3] - sign * v0->viewCoord[plane];
220 int64_t r = q - (v1->viewCoord[3] - sign * v1->viewCoord[plane]);
221 return _lerpVertex(v0, v1, out, q, r);
222}
223
224static bool _clipPolygon(struct DSGX* gx, struct DSGXPolygon* poly) {
225 int nOffscreen = 0;
226 int offscreenVerts[10] = { 0, 0, 0, 0 };
227 unsigned oldVerts[4];
228 int v;
229
230 if (!DSGXPolygonAttrsIsBackFace(poly->polyParams) || !DSGXPolygonAttrsIsFrontFace(poly->polyParams)) {
231 // Calculate normal direction and camera dot product average
232 int64_t nx = 0;
233 int64_t ny = 0;
234 int64_t nz = 0;
235 int64_t dot = 0;
236 for (v = 0; v < poly->verts; ++v) {
237 struct DSGXVertex* v0 = &gx->pendingVertices[poly->vertIds[v]];
238 struct DSGXVertex* v1;
239 struct DSGXVertex* v2;
240 if (v < poly->verts - 2) {
241 v1 = &gx->pendingVertices[poly->vertIds[v + 1]];
242 v2 = &gx->pendingVertices[poly->vertIds[v + 2]];
243 } else if (v < poly->verts - 1) {
244 v1 = &gx->pendingVertices[poly->vertIds[v + 1]];
245 v2 = &gx->pendingVertices[poly->vertIds[v + 2 - poly->verts]];
246 } else {
247 v1 = &gx->pendingVertices[poly->vertIds[v + 1 - poly->verts]];
248 v2 = &gx->pendingVertices[poly->vertIds[v + 2 - poly->verts]];
249 }
250 nx = ((int64_t) v0->viewCoord[1] * v2->viewCoord[3] - (int64_t) v0->viewCoord[3] * v2->viewCoord[1]) >> 24;
251 ny = ((int64_t) v0->viewCoord[3] * v2->viewCoord[0] - (int64_t) v0->viewCoord[0] * v2->viewCoord[3]) >> 24;
252 nz = ((int64_t) v0->viewCoord[0] * v2->viewCoord[1] - (int64_t) v0->viewCoord[1] * v2->viewCoord[0]) >> 24;
253 dot += nx * v1->viewCoord[0] + ny * v1->viewCoord[1] + nz * v1->viewCoord[3];
254 }
255 if (!DSGXPolygonAttrsIsBackFace(poly->polyParams) && dot < 0) {
256 return false;
257 }
258 if (!DSGXPolygonAttrsIsFrontFace(poly->polyParams) && dot > 0) {
259 return false;
260 }
261 }
262
263 // Collect offscreen vertices
264 for (v = 0; v < poly->verts; ++v) {
265 offscreenVerts[v] = _cohenSutherlandCode(&gx->pendingVertices[poly->vertIds[v]]);
266 oldVerts[v] = poly->vertIds[v];
267 if (offscreenVerts[v]) {
268 ++nOffscreen;
269 }
270 }
271
272 struct DSGXVertex* vbuf = gx->vertexBuffer[gx->bufferIndex];
273
274 if (!nOffscreen) {
275 for (v = 0; v < poly->verts; ++v) {
276 if (gx->vertexIndex == DS_GX_VERTEX_BUFFER_SIZE) {
277 return false;
278 }
279 int vertexId = oldVerts[v];
280 if (gx->pendingVertexIds[vertexId] >= 0) {
281 poly->vertIds[v] = gx->pendingVertexIds[vertexId];
282 } else {
283 vbuf[gx->vertexIndex] = gx->pendingVertices[vertexId];
284 gx->pendingVertexIds[vertexId] = gx->vertexIndex;
285 poly->vertIds[v] = gx->vertexIndex;
286 ++gx->vertexIndex;
287 }
288 }
289 return true;
290 }
291
292 struct DSGXVertex inList[10];
293 struct DSGXVertex outList[10];
294 int outOffscreenVerts[10] = { 0, 0, 0, 0 };
295 for (v = 0; v < poly->verts; ++v) {
296 inList[v] = gx->pendingVertices[oldVerts[v]];
297 }
298
299 int newV;
300
301 int plane;
302 for (plane = 5; plane >= 0; --plane) {
303 newV = 0;
304 for (v = 0; v < poly->verts; ++v) {
305 if (!(offscreenVerts[v] & (1 << plane))) {
306 outList[newV] = inList[v];
307 outOffscreenVerts[newV] = offscreenVerts[v];
308 ++newV;
309 } else {
310 struct DSGXVertex* in = &inList[v];
311 struct DSGXVertex* in2;
312 struct DSGXVertex* out;
313 int iv;
314
315 if (v > 0) {
316 iv = v - 1;
317 } else {
318 iv = poly->verts - 1;
319 }
320 if (!(offscreenVerts[iv] & (1 << plane))) {
321 in2 = &inList[iv];
322 out = &outList[newV];
323 if (_lerpVertexP(in, in2, out, plane >> 1, -1 + (plane & 1) * 2)) {
324 outOffscreenVerts[newV] = _cohenSutherlandCode(out);
325 ++newV;
326 }
327 }
328
329 if (v < poly->verts - 1) {
330 iv = v + 1;
331 } else {
332 iv = 0;
333 }
334 if (!(offscreenVerts[iv] & (1 << plane))) {
335 in2 = &inList[iv];
336 out = &outList[newV];
337 if (_lerpVertexP(in, in2, out, plane >> 1, -1 + (plane & 1) * 2)) {
338 outOffscreenVerts[newV] = _cohenSutherlandCode(out);
339 ++newV;
340 }
341 }
342 }
343 }
344 poly->verts = newV;
345 memcpy(inList, outList, newV * sizeof(*inList));
346 memcpy(offscreenVerts, outOffscreenVerts, newV * sizeof(*offscreenVerts));
347 }
348
349 for (v = 0; v < poly->verts; ++v) {
350 if (gx->vertexIndex == DS_GX_VERTEX_BUFFER_SIZE) {
351 return false;
352 }
353 // TODO: merge strips
354 vbuf[gx->vertexIndex] = inList[v];
355 poly->vertIds[v] = gx->vertexIndex;
356 ++gx->vertexIndex;
357 }
358
359 return newV > 2;
360}
361
362static int32_t _dotViewport(struct DSGXVertex* vertex, int32_t* col) {
363 int64_t a;
364 int64_t b;
365 int64_t sum;
366 a = col[0];
367 b = vertex->coord[0];
368 sum = a * b;
369 a = col[4];
370 b = vertex->coord[1];
371 sum += a * b;
372 a = col[8];
373 b = vertex->coord[2];
374 sum += a * b;
375 a = col[12];
376 b = MTX_ONE;
377 sum += a * b;
378 return sum >> 8LL;
379}
380
381static int16_t _dotTexture(struct DSGXVertex* vertex, int mode, int32_t* col) {
382 int64_t a;
383 int64_t b;
384 int64_t sum;
385 switch (mode) {
386 case 1:
387 a = col[0];
388 b = vertex->s << 8;
389 sum = a * b;
390 a = col[4];
391 b = vertex->t << 8;
392 sum += a * b;
393 a = col[8];
394 b = MTX_ONE >> 4;
395 sum += a * b;
396 a = col[12];
397 b = MTX_ONE >> 4;
398 sum += a * b;
399 break;
400 case 2:
401 return 0;
402 case 3:
403 a = col[0];
404 b = vertex->viewCoord[0] << 8;
405 sum = a * b;
406 a = col[4];
407 b = vertex->viewCoord[1] << 8;
408 sum += a * b;
409 a = col[8];
410 b = vertex->viewCoord[2] << 8;
411 sum += a * b;
412 a = col[12];
413 b = MTX_ONE;
414 sum += a * b;
415 }
416 return sum >> 20;
417}
418
419static int32_t _dotFrac(int16_t x, int16_t y, int16_t z, int32_t* col) {
420 int64_t a;
421 int64_t b;
422 int64_t sum;
423 a = col[0];
424 b = x;
425 sum = a * b;
426 a = col[4];
427 b = y;
428 sum += a * b;
429 a = col[8];
430 b = z;
431 sum += a * b;
432 return sum >> 12;
433}
434
435static int16_t _dot3(int32_t x0, int32_t y0, int32_t z0, int32_t x1, int32_t y1, int32_t z1) {
436 int32_t a = x0 * x1;
437 a += y0 * y1;
438 a += z0 * z1;
439 a >>= 12;
440 return a;
441}
442
443static void _emitVertex(struct DSGX* gx, uint16_t x, uint16_t y, uint16_t z) {
444 if (gx->vertexMode < 0 || gx->vertexIndex == DS_GX_VERTEX_BUFFER_SIZE || gx->polygonIndex == DS_GX_POLYGON_BUFFER_SIZE) {
445 return;
446 }
447 gx->currentVertex.coord[0] = x;
448 gx->currentVertex.coord[1] = y;
449 gx->currentVertex.coord[2] = z;
450 gx->currentVertex.viewCoord[0] = _dotViewport(&gx->currentVertex, &gx->clipMatrix.m[0]);
451 gx->currentVertex.viewCoord[1] = _dotViewport(&gx->currentVertex, &gx->clipMatrix.m[1]);
452 gx->currentVertex.viewCoord[2] = _dotViewport(&gx->currentVertex, &gx->clipMatrix.m[2]);
453 gx->currentVertex.viewCoord[3] = _dotViewport(&gx->currentVertex, &gx->clipMatrix.m[3]);
454
455 if (DSGXTexParamsGetCoordTfMode(gx->currentPoly.texParams) == 0) {
456 gx->currentVertex.vs = gx->currentVertex.s;
457 gx->currentVertex.vt = gx->currentVertex.t;
458 } else if (DSGXTexParamsGetCoordTfMode(gx->currentPoly.texParams) == 3) {
459 int32_t m12 = gx->texMatrix.m[12];
460 int32_t m13 = gx->texMatrix.m[13];
461 gx->texMatrix.m[12] = gx->currentVertex.s;
462 gx->texMatrix.m[13] = gx->currentVertex.t;
463 gx->currentVertex.vs = _dotTexture(&gx->currentVertex, 3, &gx->texMatrix.m[0]);
464 gx->currentVertex.vt = _dotTexture(&gx->currentVertex, 3, &gx->texMatrix.m[1]);
465 gx->texMatrix.m[12] = m12;
466 gx->texMatrix.m[13] = m13;
467 }
468
469 gx->pendingVertices[gx->pendingVertexIndex] = gx->currentVertex;
470 gx->currentPoly.vertIds[gx->currentPoly.verts] = gx->pendingVertexIndex;
471 gx->pendingVertexIndex = (gx->pendingVertexIndex + 1) & 3;
472
473 ++gx->currentPoly.verts;
474 int totalVertices;
475 switch (gx->vertexMode) {
476 case 0:
477 case 2:
478 totalVertices = 3;
479 break;
480 case 1:
481 case 3:
482 totalVertices = 4;
483 break;
484 }
485 if (gx->currentPoly.verts == totalVertices) {
486 struct DSGXPolygon* pbuf = gx->polygonBuffer[gx->bufferIndex];
487
488 pbuf[gx->polygonIndex] = gx->currentPoly;
489 switch (gx->vertexMode) {
490 case 0:
491 case 1:
492 gx->currentPoly.verts = 0;
493 break;
494 case 2:
495 // Reverse winding if needed
496 if (gx->reverseWinding) {
497 pbuf[gx->polygonIndex].vertIds[1] = gx->currentPoly.vertIds[2];
498 pbuf[gx->polygonIndex].vertIds[2] = gx->currentPoly.vertIds[1];
499 }
500 gx->reverseWinding = !gx->reverseWinding;
501 gx->currentPoly.vertIds[0] = gx->currentPoly.vertIds[1];
502 gx->currentPoly.vertIds[1] = gx->currentPoly.vertIds[2];
503 gx->currentPoly.verts = 2;
504 break;
505 case 3:
506 gx->currentPoly.vertIds[0] = gx->currentPoly.vertIds[2];
507 gx->currentPoly.vertIds[1] = gx->currentPoly.vertIds[3];
508 // Ensure quads don't cross over
509 pbuf[gx->polygonIndex].vertIds[2] = gx->currentPoly.vertIds[3];
510 pbuf[gx->polygonIndex].vertIds[3] = gx->currentPoly.vertIds[2];
511 gx->currentPoly.verts = 2;
512 break;
513 }
514
515 if (_clipPolygon(gx, &pbuf[gx->polygonIndex])) {
516 ++gx->polygonIndex;
517 }
518 if (gx->vertexMode < 2) {
519 memset(gx->pendingVertexIds, -1, sizeof(gx->pendingVertexIds));
520 } else {
521 gx->pendingVertexIds[gx->pendingVertexIndex] = -1;
522 gx->pendingVertexIds[(gx->pendingVertexIndex + 1) & 3] = -1;
523 }
524 }
525}
526
527static void _flushOutstanding(struct DSGX* gx) {
528 if (gx->p->cpuBlocked & DS_CPU_BLOCK_GX) {
529 gx->p->cpuBlocked &= ~DS_CPU_BLOCK_GX;
530 DSGXWriteFIFO(gx, gx->outstandingEntry);
531 gx->outstandingEntry.command = 0;
532 }
533 while (gx->outstandingCommand[0] && !gx->outstandingParams[0]) {
534 DSGXWriteFIFO(gx, (struct DSGXEntry) { 0 });
535 if (CircleBufferSize(&gx->fifo) == (DS_GX_FIFO_SIZE * sizeof(struct DSGXEntry))) {
536 return;
537 }
538 }
539}
540
541static bool _boxTestVertex(struct DSGX* gx, struct DSGXVertex* vertex) {
542 vertex->viewCoord[0] = _dotViewport(vertex, &gx->clipMatrix.m[0]);
543 vertex->viewCoord[1] = _dotViewport(vertex, &gx->clipMatrix.m[1]);
544 vertex->viewCoord[2] = _dotViewport(vertex, &gx->clipMatrix.m[2]);
545 vertex->viewCoord[3] = _dotViewport(vertex, &gx->clipMatrix.m[3]);
546
547 return !_cohenSutherlandCode(vertex);
548}
549
550static bool _boxTest(struct DSGX* gx) {
551 int16_t x = gx->activeEntries[0].params[0];
552 x |= gx->activeEntries[0].params[1] << 8;
553 int16_t y = gx->activeEntries[0].params[2];
554 y |= gx->activeEntries[0].params[3] << 8;
555 int16_t z = gx->activeEntries[1].params[0];
556 z |= gx->activeEntries[1].params[1] << 8;
557 int16_t w = gx->activeEntries[1].params[2];
558 w |= gx->activeEntries[1].params[3] << 8;
559 int16_t h = gx->activeEntries[2].params[0];
560 h |= gx->activeEntries[2].params[1] << 8;
561 int16_t d = gx->activeEntries[2].params[2];
562 d |= gx->activeEntries[2].params[3] << 8;
563
564 struct DSGXVertex vertex = {
565 .coord = { x, y, z }
566 };
567 if (_boxTestVertex(gx, &vertex)) {
568 return true;
569 }
570
571 vertex.coord[0] += w;
572 if (_boxTestVertex(gx, &vertex)) {
573 return true;
574 }
575
576 vertex.coord[0] = x;
577 vertex.coord[1] += h;
578 if (_boxTestVertex(gx, &vertex)) {
579 return true;
580 }
581
582 vertex.coord[0] += w;
583 if (_boxTestVertex(gx, &vertex)) {
584 return true;
585 }
586
587 vertex.coord[0] = x;
588 vertex.coord[1] = y;
589 vertex.coord[2] += d;
590 if (_boxTestVertex(gx, &vertex)) {
591 return true;
592 }
593
594 vertex.coord[0] += w;
595 if (_boxTestVertex(gx, &vertex)) {
596 return true;
597 }
598
599 vertex.coord[0] = x;
600 vertex.coord[1] += h;
601 if (_boxTestVertex(gx, &vertex)) {
602 return true;
603 }
604
605 vertex.coord[0] += w;
606 if (_boxTestVertex(gx, &vertex)) {
607 return true;
608 }
609
610 return false;
611}
612
613static void _fifoRun(struct mTiming* timing, void* context, uint32_t cyclesLate) {
614 struct DSGX* gx = context;
615 uint32_t cycles;
616 bool first = true;
617 while (!gx->swapBuffers) {
618 if (CircleBufferSize(&gx->pipe) <= 2 * sizeof(struct DSGXEntry)) {
619 _pullPipe(gx);
620 }
621
622 if (!CircleBufferSize(&gx->pipe)) {
623 cycles = 0;
624 break;
625 }
626
627 DSRegGXSTAT gxstat = gx->p->memory.io9[DS9_REG_GXSTAT_LO >> 1];
628 int projMatrixPointer = DSRegGXSTATGetProjMatrixStackLevel(gxstat);
629
630 struct DSGXEntry entry = { 0 };
631 CircleBufferDump(&gx->pipe, (int8_t*) &entry.command, 1);
632 cycles = _gxCommandCycleBase[entry.command];
633
634 if (first) {
635 first = false;
636 } else if (!gx->activeParams && cycles > cyclesLate) {
637 break;
638 }
639 CircleBufferRead(&gx->pipe, &entry, sizeof(entry));
640
641 if (gx->activeParams) {
642 int index = _gxCommandParams[entry.command] - gx->activeParams;
643 gx->activeEntries[index] = entry;
644 --gx->activeParams;
645 } else {
646 gx->activeParams = _gxCommandParams[entry.command];
647 if (gx->activeParams) {
648 --gx->activeParams;
649 }
650 if (gx->activeParams) {
651 gx->activeEntries[0] = entry;
652 }
653 }
654
655 if (gx->activeParams) {
656 continue;
657 }
658
659 switch (entry.command) {
660 case DS_GX_CMD_MTX_MODE:
661 if (entry.params[0] < 4) {
662 gx->mtxMode = entry.params[0];
663 } else {
664 mLOG(DS_GX, GAME_ERROR, "Invalid GX MTX_MODE %02X", entry.params[0]);
665 }
666 break;
667 case DS_GX_CMD_MTX_PUSH:
668 switch (gx->mtxMode) {
669 case 0:
670 memcpy(&gx->projMatrixStack, &gx->projMatrix, sizeof(gx->projMatrix));
671 ++projMatrixPointer;
672 break;
673 case 1:
674 case 2:
675 memcpy(&gx->vecMatrixStack[gx->pvMatrixPointer & 0x1F], &gx->vecMatrix, sizeof(gx->vecMatrix));
676 memcpy(&gx->posMatrixStack[gx->pvMatrixPointer & 0x1F], &gx->posMatrix, sizeof(gx->posMatrix));
677 ++gx->pvMatrixPointer;
678 break;
679 case 3:
680 mLOG(DS_GX, STUB, "Unimplemented GX MTX_PUSH mode");
681 break;
682 }
683 break;
684 case DS_GX_CMD_MTX_POP: {
685 int8_t offset = entry.params[0];
686 offset <<= 2;
687 offset >>= 2;
688 switch (gx->mtxMode) {
689 case 0:
690 projMatrixPointer -= offset;
691 memcpy(&gx->projMatrix, &gx->projMatrixStack, sizeof(gx->projMatrix));
692 break;
693 case 1:
694 case 2:
695 gx->pvMatrixPointer -= offset;
696 memcpy(&gx->vecMatrix, &gx->vecMatrixStack[gx->pvMatrixPointer & 0x1F], sizeof(gx->vecMatrix));
697 memcpy(&gx->posMatrix, &gx->posMatrixStack[gx->pvMatrixPointer & 0x1F], sizeof(gx->posMatrix));
698 break;
699 case 3:
700 mLOG(DS_GX, STUB, "Unimplemented GX MTX_POP mode");
701 break;
702 }
703 _updateClipMatrix(gx);
704 break;
705 }
706 case DS_GX_CMD_MTX_STORE: {
707 int8_t offset = entry.params[0] & 0x1F;
708 // TODO: overflow
709 switch (gx->mtxMode) {
710 case 0:
711 memcpy(&gx->projMatrixStack, &gx->projMatrix, sizeof(gx->projMatrixStack));
712 break;
713 case 1:
714 case 2:
715 memcpy(&gx->vecMatrixStack[offset], &gx->vecMatrix, sizeof(gx->vecMatrix));
716 memcpy(&gx->posMatrixStack[offset], &gx->posMatrix, sizeof(gx->posMatrix));
717 break;
718 case 3:
719 mLOG(DS_GX, STUB, "Unimplemented GX MTX_STORE mode");
720 break;
721 }
722 break;
723 }
724 case DS_GX_CMD_MTX_RESTORE: {
725 int8_t offset = entry.params[0] & 0x1F;
726 // TODO: overflow
727 switch (gx->mtxMode) {
728 case 0:
729 memcpy(&gx->projMatrix, &gx->projMatrixStack, sizeof(gx->projMatrix));
730 break;
731 case 1:
732 case 2:
733 memcpy(&gx->vecMatrix, &gx->vecMatrixStack[offset], sizeof(gx->vecMatrix));
734 memcpy(&gx->posMatrix, &gx->posMatrixStack[offset], sizeof(gx->posMatrix));
735 break;
736 case 3:
737 mLOG(DS_GX, STUB, "Unimplemented GX MTX_RESTORE mode");
738 break;
739 }
740 _updateClipMatrix(gx);
741 break;
742 }
743 case DS_GX_CMD_MTX_IDENTITY:
744 switch (gx->mtxMode) {
745 case 0:
746 DSGXMtxIdentity(&gx->projMatrix);
747 break;
748 case 2:
749 DSGXMtxIdentity(&gx->vecMatrix);
750 // Fall through
751 case 1:
752 DSGXMtxIdentity(&gx->posMatrix);
753 break;
754 case 3:
755 DSGXMtxIdentity(&gx->texMatrix);
756 break;
757 }
758 _updateClipMatrix(gx);
759 break;
760 case DS_GX_CMD_MTX_LOAD_4x4: {
761 struct DSGXMatrix m;
762 int i;
763 for (i = 0; i < 16; ++i) {
764 m.m[i] = gx->activeEntries[i].params[0];
765 m.m[i] |= gx->activeEntries[i].params[1] << 8;
766 m.m[i] |= gx->activeEntries[i].params[2] << 16;
767 m.m[i] |= gx->activeEntries[i].params[3] << 24;
768 }
769 switch (gx->mtxMode) {
770 case 0:
771 memcpy(&gx->projMatrix, &m, sizeof(gx->projMatrix));
772 break;
773 case 2:
774 memcpy(&gx->vecMatrix, &m, sizeof(gx->vecMatrix));
775 // Fall through
776 case 1:
777 memcpy(&gx->posMatrix, &m, sizeof(gx->posMatrix));
778 break;
779 case 3:
780 memcpy(&gx->texMatrix, &m, sizeof(gx->texMatrix));
781 break;
782 }
783 _updateClipMatrix(gx);
784 break;
785 }
786 case DS_GX_CMD_MTX_LOAD_4x3: {
787 struct DSGXMatrix m;
788 int i, j;
789 for (j = 0; j < 4; ++j) {
790 for (i = 0; i < 3; ++i) {
791 m.m[i + j * 4] = gx->activeEntries[i + j * 3].params[0];
792 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[1] << 8;
793 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[2] << 16;
794 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[3] << 24;
795 }
796 m.m[j * 4 + 3] = 0;
797 }
798 m.m[15] = MTX_ONE;
799 switch (gx->mtxMode) {
800 case 0:
801 memcpy(&gx->projMatrix, &m, sizeof(gx->projMatrix));
802 break;
803 case 2:
804 memcpy(&gx->vecMatrix, &m, sizeof(gx->vecMatrix));
805 // Fall through
806 case 1:
807 memcpy(&gx->posMatrix, &m, sizeof(gx->posMatrix));
808 break;
809 case 3:
810 memcpy(&gx->texMatrix, &m, sizeof(gx->texMatrix));
811 break;
812 }
813 _updateClipMatrix(gx);
814 break;
815 }
816 case DS_GX_CMD_MTX_MULT_4x4: {
817 struct DSGXMatrix m;
818 int i;
819 for (i = 0; i < 16; ++i) {
820 m.m[i] = gx->activeEntries[i].params[0];
821 m.m[i] |= gx->activeEntries[i].params[1] << 8;
822 m.m[i] |= gx->activeEntries[i].params[2] << 16;
823 m.m[i] |= gx->activeEntries[i].params[3] << 24;
824 }
825 switch (gx->mtxMode) {
826 case 0:
827 DSGXMtxMultiply(&gx->projMatrix, &m, &gx->projMatrix);
828 break;
829 case 2:
830 DSGXMtxMultiply(&gx->vecMatrix, &m, &gx->vecMatrix);
831 // Fall through
832 case 1:
833 DSGXMtxMultiply(&gx->posMatrix, &m, &gx->posMatrix);
834 break;
835 case 3:
836 DSGXMtxMultiply(&gx->texMatrix, &m, &gx->texMatrix);
837 break;
838 }
839 _updateClipMatrix(gx);
840 break;
841 }
842 case DS_GX_CMD_MTX_MULT_4x3: {
843 struct DSGXMatrix m;
844 int i, j;
845 for (j = 0; j < 4; ++j) {
846 for (i = 0; i < 3; ++i) {
847 m.m[i + j * 4] = gx->activeEntries[i + j * 3].params[0];
848 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[1] << 8;
849 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[2] << 16;
850 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[3] << 24;
851 }
852 m.m[j * 4 + 3] = 0;
853 }
854 m.m[15] = MTX_ONE;
855 switch (gx->mtxMode) {
856 case 0:
857 DSGXMtxMultiply(&gx->projMatrix, &m, &gx->projMatrix);
858 break;
859 case 2:
860 DSGXMtxMultiply(&gx->vecMatrix, &m, &gx->vecMatrix);
861 // Fall through
862 case 1:
863 DSGXMtxMultiply(&gx->posMatrix, &m, &gx->posMatrix);
864 break;
865 case 3:
866 DSGXMtxMultiply(&gx->texMatrix, &m, &gx->texMatrix);
867 break;
868 }
869 _updateClipMatrix(gx);
870 break;
871 }
872 case DS_GX_CMD_MTX_MULT_3x3: {
873 struct DSGXMatrix m;
874 int i, j;
875 for (j = 0; j < 3; ++j) {
876 for (i = 0; i < 3; ++i) {
877 m.m[i + j * 4] = gx->activeEntries[i + j * 3].params[0];
878 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[1] << 8;
879 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[2] << 16;
880 m.m[i + j * 4] |= gx->activeEntries[i + j * 3].params[3] << 24;
881 }
882 m.m[j * 4 + 3] = 0;
883 }
884 m.m[12] = 0;
885 m.m[13] = 0;
886 m.m[14] = 0;
887 m.m[15] = MTX_ONE;
888 switch (gx->mtxMode) {
889 case 0:
890 DSGXMtxMultiply(&gx->projMatrix, &m, &gx->projMatrix);
891 break;
892 case 2:
893 DSGXMtxMultiply(&gx->vecMatrix, &m, &gx->vecMatrix);
894 // Fall through
895 case 1:
896 DSGXMtxMultiply(&gx->posMatrix, &m, &gx->posMatrix);
897 break;
898 case 3:
899 DSGXMtxMultiply(&gx->texMatrix, &m, &gx->texMatrix);
900 break;
901 }
902 _updateClipMatrix(gx);
903 break;
904 }
905 case DS_GX_CMD_MTX_TRANS: {
906 int32_t m[3];
907 m[0] = gx->activeEntries[0].params[0];
908 m[0] |= gx->activeEntries[0].params[1] << 8;
909 m[0] |= gx->activeEntries[0].params[2] << 16;
910 m[0] |= gx->activeEntries[0].params[3] << 24;
911 m[1] = gx->activeEntries[1].params[0];
912 m[1] |= gx->activeEntries[1].params[1] << 8;
913 m[1] |= gx->activeEntries[1].params[2] << 16;
914 m[1] |= gx->activeEntries[1].params[3] << 24;
915 m[2] = gx->activeEntries[2].params[0];
916 m[2] |= gx->activeEntries[2].params[1] << 8;
917 m[2] |= gx->activeEntries[2].params[2] << 16;
918 m[2] |= gx->activeEntries[2].params[3] << 24;
919 switch (gx->mtxMode) {
920 case 0:
921 DSGXMtxTranslate(&gx->projMatrix, m);
922 break;
923 case 2:
924 DSGXMtxTranslate(&gx->vecMatrix, m);
925 // Fall through
926 case 1:
927 DSGXMtxTranslate(&gx->posMatrix, m);
928 break;
929 case 3:
930 DSGXMtxTranslate(&gx->texMatrix, m);
931 break;
932 }
933 _updateClipMatrix(gx);
934 break;
935 }
936 case DS_GX_CMD_MTX_SCALE: {
937 int32_t m[3];
938 m[0] = gx->activeEntries[0].params[0];
939 m[0] |= gx->activeEntries[0].params[1] << 8;
940 m[0] |= gx->activeEntries[0].params[2] << 16;
941 m[0] |= gx->activeEntries[0].params[3] << 24;
942 m[1] = gx->activeEntries[1].params[0];
943 m[1] |= gx->activeEntries[1].params[1] << 8;
944 m[1] |= gx->activeEntries[1].params[2] << 16;
945 m[1] |= gx->activeEntries[1].params[3] << 24;
946 m[2] = gx->activeEntries[2].params[0];
947 m[2] |= gx->activeEntries[2].params[1] << 8;
948 m[2] |= gx->activeEntries[2].params[2] << 16;
949 m[2] |= gx->activeEntries[2].params[3] << 24;
950 switch (gx->mtxMode) {
951 case 0:
952 DSGXMtxScale(&gx->projMatrix, m);
953 break;
954 case 1:
955 case 2:
956 DSGXMtxScale(&gx->posMatrix, m);
957 break;
958 case 3:
959 DSGXMtxScale(&gx->texMatrix, m);
960 break;
961 }
962 _updateClipMatrix(gx);
963 break;
964 }
965 case DS_GX_CMD_COLOR:
966 gx->currentVertex.color = entry.params[0];
967 gx->currentVertex.color |= entry.params[1] << 8;
968 break;
969 case DS_GX_CMD_NORMAL: {
970 int32_t xyz = entry.params[0];
971 xyz |= entry.params[1] << 8;
972 xyz |= entry.params[2] << 16;
973 xyz |= entry.params[3] << 24;
974 int16_t x = (xyz << 6) & 0xFFC0;
975 int16_t y = (xyz >> 4) & 0xFFC0;
976 int16_t z = (xyz >> 14) & 0xFFC0;
977 x >>= 3;
978 y >>= 3;
979 z >>= 3;
980 if (DSGXTexParamsGetCoordTfMode(gx->currentPoly.texParams) == 2) {
981 gx->currentVertex.vs = _dotFrac(x, y, z, &gx->texMatrix.m[0]) + gx->currentVertex.s;
982 gx->currentVertex.vt = _dotFrac(x, y, z, &gx->texMatrix.m[1]) + gx->currentVertex.t;
983 }
984 int16_t nx = _dotFrac(x, y, z, &gx->vecMatrix.m[0]);
985 int16_t ny = _dotFrac(x, y, z, &gx->vecMatrix.m[1]);
986 int16_t nz = _dotFrac(x, y, z, &gx->vecMatrix.m[2]);
987 int r = gx->emit & 0x1F;
988 int g = (gx->emit >> 5) & 0x1F;
989 int b = (gx->emit >> 10) & 0x1F;
990 int i;
991 for (i = 0; i < 4; ++i) {
992 if (!(DSGXPolygonAttrsGetLights(gx->currentPoly.polyParams) & (1 << i))) {
993 continue;
994 }
995 struct DSGXLight* light = &gx->lights[i];
996 int diffuse = -_dot3(light->x, light->y, light->z, nx, ny, nz);
997 if (diffuse < 0) {
998 diffuse = 0;
999 }
1000 int specular = -_dot3(-light->x >> 1, -light->y >> 1, (0x1000 - light->z) >> 1, nx, ny, nz);
1001 if (specular < 0) {
1002 specular = 0;
1003 } else {
1004 specular = 2 * specular * specular - (1 << 10);
1005 }
1006 unsigned lr = (light->color) & 0x1F;
1007 unsigned lg = (light->color >> 5) & 0x1F;
1008 unsigned lb = (light->color >> 10) & 0x1F;
1009 unsigned xr, xg, xb;
1010 xr = gx->specular & 0x1F;
1011 xg = (gx->specular >> 5) & 0x1F;
1012 xb = (gx->specular >> 10) & 0x1F;
1013 r += (specular * xr * lr) >> 17;
1014 g += (specular * xg * lg) >> 17;
1015 b += (specular * xb * lb) >> 17;
1016 xr = gx->diffuse & 0x1F;
1017 xg = (gx->diffuse >> 5) & 0x1F;
1018 xb = (gx->diffuse >> 10) & 0x1F;
1019 r += (diffuse * xr * lr) >> 17;
1020 g += (diffuse * xg * lg) >> 17;
1021 b += (diffuse * xb * lb) >> 17;
1022 xr = gx->ambient & 0x1F;
1023 xg = (gx->ambient >> 5) & 0x1F;
1024 xb = (gx->ambient >> 10) & 0x1F;
1025 r += (xr * lr) >> 5;
1026 g += (xg * lg) >> 5;
1027 b += (xb * lb) >> 5;
1028 }
1029 if (r < 0) {
1030 r = 0;
1031 } else if (r > 0x1F) {
1032 r = 0x1F;
1033 }
1034 if (g < 0) {
1035 g = 0;
1036 } else if (g > 0x1F) {
1037 g = 0x1F;
1038 }
1039 if (b < 0) {
1040 b = 0;
1041 } else if (b > 0x1F) {
1042 b = 0x1F;
1043 }
1044 gx->currentVertex.color = r | (g << 5) | (b << 10);
1045 break;
1046 }
1047 case DS_GX_CMD_TEXCOORD:
1048 gx->currentVertex.s = entry.params[0];
1049 gx->currentVertex.s |= entry.params[1] << 8;
1050 gx->currentVertex.t = entry.params[2];
1051 gx->currentVertex.t |= entry.params[3] << 8;
1052 if (DSGXTexParamsGetCoordTfMode(gx->currentPoly.texParams) == 1) {
1053 gx->currentVertex.vs = _dotTexture(&gx->currentVertex, 1, &gx->texMatrix.m[0]);
1054 gx->currentVertex.vt = _dotTexture(&gx->currentVertex, 1, &gx->texMatrix.m[1]);
1055 }
1056 break;
1057 case DS_GX_CMD_VTX_16: {
1058 int16_t x = gx->activeEntries[0].params[0];
1059 x |= gx->activeEntries[0].params[1] << 8;
1060 int16_t y = gx->activeEntries[0].params[2];
1061 y |= gx->activeEntries[0].params[3] << 8;
1062 int16_t z = gx->activeEntries[1].params[0];
1063 z |= gx->activeEntries[1].params[1] << 8;
1064 _emitVertex(gx, x, y, z);
1065 break;
1066 }
1067 case DS_GX_CMD_VTX_10: {
1068 int32_t xyz = entry.params[0];
1069 xyz |= entry.params[1] << 8;
1070 xyz |= entry.params[2] << 16;
1071 xyz |= entry.params[3] << 24;
1072 int16_t x = (xyz << 6) & 0xFFC0;
1073 int16_t y = (xyz >> 4) & 0xFFC0;
1074 int16_t z = (xyz >> 14) & 0xFFC0;
1075 _emitVertex(gx, x, y, z);
1076 break;
1077 }
1078 case DS_GX_CMD_VTX_XY: {
1079 int16_t x = entry.params[0];
1080 x |= entry.params[1] << 8;
1081 int16_t y = entry.params[2];
1082 y |= entry.params[3] << 8;
1083 _emitVertex(gx, x, y, gx->currentVertex.coord[2]);
1084 break;
1085 }
1086 case DS_GX_CMD_VTX_XZ: {
1087 int16_t x = entry.params[0];
1088 x |= entry.params[1] << 8;
1089 int16_t z = entry.params[2];
1090 z |= entry.params[3] << 8;
1091 _emitVertex(gx, x, gx->currentVertex.coord[1], z);
1092 break;
1093 }
1094 case DS_GX_CMD_VTX_YZ: {
1095 int16_t y = entry.params[0];
1096 y |= entry.params[1] << 8;
1097 int16_t z = entry.params[2];
1098 z |= entry.params[3] << 8;
1099 _emitVertex(gx, gx->currentVertex.coord[0], y, z);
1100 break;
1101 }
1102 case DS_GX_CMD_VTX_DIFF: {
1103 int32_t xyz = entry.params[0];
1104 xyz |= entry.params[1] << 8;
1105 xyz |= entry.params[2] << 16;
1106 xyz |= entry.params[3] << 24;
1107 int16_t x = (xyz << 6) & 0xFFC0;
1108 int16_t y = (xyz >> 4) & 0xFFC0;
1109 int16_t z = (xyz >> 14) & 0xFFC0;
1110 _emitVertex(gx, gx->currentVertex.coord[0] + (x >> 6),
1111 gx->currentVertex.coord[1] + (y >> 6),
1112 gx->currentVertex.coord[2] + (z >> 6));
1113 break;
1114 }
1115 case DS_GX_CMD_DIF_AMB:
1116 gx->diffuse = entry.params[0];
1117 gx->diffuse |= entry.params[1] << 8;
1118 if (gx->diffuse & 0x8000) {
1119 gx->currentVertex.color = gx->diffuse;
1120 }
1121 gx->ambient = entry.params[2];
1122 gx->ambient |= entry.params[3] << 8;
1123 break;
1124 case DS_GX_CMD_SPE_EMI:
1125 gx->specular = entry.params[0];
1126 gx->specular |= entry.params[1] << 8;
1127 gx->emit = entry.params[2];
1128 gx->emit |= entry.params[3] << 8;
1129 break;
1130 case DS_GX_CMD_LIGHT_VECTOR: {
1131 uint32_t xyz = entry.params[0];
1132 xyz |= entry.params[1] << 8;
1133 xyz |= entry.params[2] << 16;
1134 xyz |= entry.params[3] << 24;
1135 struct DSGXLight* light = &gx->lights[xyz >> 30];
1136 int16_t x = (xyz << 6) & 0xFFC0;
1137 int16_t y = (xyz >> 4) & 0xFFC0;
1138 int16_t z = (xyz >> 14) & 0xFFC0;
1139 x >>= 3;
1140 y >>= 3;
1141 z >>= 3;
1142 light->x = _dotFrac(x, y, z, &gx->vecMatrix.m[0]);
1143 light->y = _dotFrac(x, y, z, &gx->vecMatrix.m[1]);
1144 light->z = _dotFrac(x, y, z, &gx->vecMatrix.m[2]);
1145 break;
1146 }
1147 case DS_GX_CMD_LIGHT_COLOR: {
1148 struct DSGXLight* light = &gx->lights[entry.params[3] >> 6];
1149 light->color = entry.params[0];
1150 light->color |= entry.params[1] << 8;
1151 break;
1152 }
1153 case DS_GX_CMD_POLYGON_ATTR:
1154 gx->nextPoly.polyParams = entry.params[0];
1155 gx->nextPoly.polyParams |= entry.params[1] << 8;
1156 gx->nextPoly.polyParams |= entry.params[2] << 16;
1157 gx->nextPoly.polyParams |= entry.params[3] << 24;
1158 break;
1159 case DS_GX_CMD_TEXIMAGE_PARAM:
1160 gx->nextPoly.texParams = entry.params[0];
1161 gx->nextPoly.texParams |= entry.params[1] << 8;
1162 gx->nextPoly.texParams |= entry.params[2] << 16;
1163 gx->nextPoly.texParams |= entry.params[3] << 24;
1164 gx->currentPoly.texParams = gx->nextPoly.texParams;
1165 break;
1166 case DS_GX_CMD_PLTT_BASE:
1167 gx->nextPoly.palBase = entry.params[0];
1168 gx->nextPoly.palBase |= entry.params[1] << 8;
1169 gx->nextPoly.palBase |= entry.params[2] << 16;
1170 gx->nextPoly.palBase |= entry.params[3] << 24;
1171 gx->currentPoly.palBase = gx->nextPoly.palBase;
1172 break;
1173 case DS_GX_CMD_BEGIN_VTXS:
1174 gx->vertexMode = entry.params[0] & 3;
1175 gx->currentPoly = gx->nextPoly;
1176 gx->reverseWinding = false;
1177 memset(gx->pendingVertexIds, -1, sizeof(gx->pendingVertexIds));
1178 break;
1179 case DS_GX_CMD_END_VTXS:
1180 gx->vertexMode = -1;
1181 break;
1182 case DS_GX_CMD_SWAP_BUFFERS:
1183 gx->swapBuffers = true;
1184 gx->wSort = entry.params[0] & 2;
1185 memset(&gx->currentVertex, 0, sizeof(gx->currentVertex));
1186 memset(&gx->nextPoly, 0, sizeof(gx-> nextPoly));
1187 gx->currentVertex.color = 0x7FFF;
1188 break;
1189 case DS_GX_CMD_VIEWPORT:
1190 gx->viewportX1 = (uint8_t) entry.params[0];
1191 gx->viewportY1 = (uint8_t) entry.params[1];
1192 gx->viewportX2 = (uint8_t) entry.params[2];
1193 gx->viewportY2 = (uint8_t) entry.params[3];
1194 gx->viewportWidth = gx->viewportX2 - gx->viewportX1 + 1;
1195 gx->viewportHeight = gx->viewportY2 - gx->viewportY1 + 1;
1196 gx->renderer->viewportX = gx->viewportX1;
1197 gx->renderer->viewportY = gx->viewportY1;
1198 gx->renderer->viewportWidth = gx->viewportWidth;
1199 gx->renderer->viewportHeight = gx->viewportHeight;
1200 break;
1201 case DS_GX_CMD_BOX_TEST:
1202 gxstat = DSRegGXSTATClearTestBusy(gxstat);
1203 gxstat = DSRegGXSTATTestFillBoxTestResult(gxstat, _boxTest(gx));
1204 break;
1205 default:
1206 mLOG(DS_GX, STUB, "Unimplemented GX command %02X:%02X %02X %02X %02X", entry.command, entry.params[0], entry.params[1], entry.params[2], entry.params[3]);
1207 break;
1208 }
1209
1210 gxstat = DSRegGXSTATSetPVMatrixStackLevel(gxstat, gx->pvMatrixPointer);
1211 gxstat = DSRegGXSTATSetProjMatrixStackLevel(gxstat, projMatrixPointer);
1212 gxstat = DSRegGXSTATTestFillMatrixStackError(gxstat, projMatrixPointer || gx->pvMatrixPointer >= 0x1F);
1213 gx->p->memory.io9[DS9_REG_GXSTAT_LO >> 1] = gxstat;
1214
1215 if (cyclesLate >= cycles) {
1216 cyclesLate -= cycles;
1217 } else {
1218 break;
1219 }
1220 }
1221 if (cycles && !gx->swapBuffers) {
1222 mTimingSchedule(timing, &gx->fifoEvent, cycles - cyclesLate);
1223 }
1224 if (CircleBufferSize(&gx->fifo) < (DS_GX_FIFO_SIZE * sizeof(struct DSGXEntry))) {
1225 _flushOutstanding(gx);
1226 }
1227 DSGXUpdateGXSTAT(gx);
1228}
1229
1230void DSGXInit(struct DSGX* gx) {
1231 gx->renderer = &dummyRenderer;
1232 CircleBufferInit(&gx->fifo, sizeof(struct DSGXEntry) * DS_GX_FIFO_SIZE);
1233 CircleBufferInit(&gx->pipe, sizeof(struct DSGXEntry) * DS_GX_PIPE_SIZE);
1234 gx->vertexBuffer[0] = malloc(sizeof(struct DSGXVertex) * DS_GX_VERTEX_BUFFER_SIZE);
1235 gx->vertexBuffer[1] = malloc(sizeof(struct DSGXVertex) * DS_GX_VERTEX_BUFFER_SIZE);
1236 gx->polygonBuffer[0] = malloc(sizeof(struct DSGXPolygon) * DS_GX_POLYGON_BUFFER_SIZE);
1237 gx->polygonBuffer[1] = malloc(sizeof(struct DSGXPolygon) * DS_GX_POLYGON_BUFFER_SIZE);
1238 gx->fifoEvent.name = "DS GX FIFO";
1239 gx->fifoEvent.priority = 0xC;
1240 gx->fifoEvent.context = gx;
1241 gx->fifoEvent.callback = _fifoRun;
1242}
1243
1244void DSGXDeinit(struct DSGX* gx) {
1245 DSGXAssociateRenderer(gx, &dummyRenderer);
1246 CircleBufferDeinit(&gx->fifo);
1247 CircleBufferDeinit(&gx->pipe);
1248 free(gx->vertexBuffer[0]);
1249 free(gx->vertexBuffer[1]);
1250 free(gx->polygonBuffer[0]);
1251 free(gx->polygonBuffer[1]);
1252}
1253
1254void DSGXReset(struct DSGX* gx) {
1255 CircleBufferClear(&gx->fifo);
1256 CircleBufferClear(&gx->pipe);
1257 DSGXMtxIdentity(&gx->projMatrix);
1258 DSGXMtxIdentity(&gx->texMatrix);
1259 DSGXMtxIdentity(&gx->posMatrix);
1260 DSGXMtxIdentity(&gx->vecMatrix);
1261
1262 DSGXMtxIdentity(&gx->clipMatrix);
1263 DSGXMtxIdentity(&gx->projMatrixStack);
1264 DSGXMtxIdentity(&gx->texMatrixStack);
1265 int i;
1266 for (i = 0; i < 32; ++i) {
1267 DSGXMtxIdentity(&gx->posMatrixStack[i]);
1268 DSGXMtxIdentity(&gx->vecMatrixStack[i]);
1269 }
1270 gx->swapBuffers = false;
1271 gx->bufferIndex = 0;
1272 gx->vertexIndex = 0;
1273 gx->polygonIndex = 0;
1274 gx->mtxMode = 0;
1275 gx->pvMatrixPointer = 0;
1276 gx->vertexMode = -1;
1277
1278 gx->viewportX1 = 0;
1279 gx->viewportY1 = 0;
1280 gx->viewportX2 = DS_VIDEO_HORIZONTAL_PIXELS - 1;
1281 gx->viewportY2 = DS_VIDEO_VERTICAL_PIXELS - 1;
1282 gx->viewportWidth = gx->viewportX2 - gx->viewportX1 + 1;
1283 gx->viewportHeight = gx->viewportY2 - gx->viewportY1 + 1;
1284
1285 memset(gx->outstandingParams, 0, sizeof(gx->outstandingParams));
1286 memset(gx->outstandingCommand, 0, sizeof(gx->outstandingCommand));
1287 memset(&gx->outstandingEntry, 0, sizeof(gx->outstandingEntry));
1288 gx->activeParams = 0;
1289 memset(&gx->currentVertex, 0, sizeof(gx->currentVertex));
1290 memset(&gx->nextPoly, 0, sizeof(gx-> nextPoly));
1291 gx->currentVertex.color = 0x7FFF;
1292 gx->dmaSource = -1;
1293}
1294
1295void DSGXAssociateRenderer(struct DSGX* gx, struct DSGXRenderer* renderer) {
1296 gx->renderer->deinit(gx->renderer);
1297 gx->renderer = renderer;
1298 memcpy(gx->renderer->tex, gx->tex, sizeof(gx->renderer->tex));
1299 memcpy(gx->renderer->texPal, gx->texPal, sizeof(gx->renderer->texPal));
1300 gx->renderer->init(gx->renderer);
1301}
1302
1303void DSGXUpdateGXSTAT(struct DSGX* gx) {
1304 uint32_t value = gx->p->memory.io9[DS9_REG_GXSTAT_HI >> 1] << 16;
1305 value = DSRegGXSTATIsDoIRQ(value);
1306
1307 size_t entries = CircleBufferSize(&gx->fifo) / sizeof(struct DSGXEntry);
1308 // XXX
1309 if (gx->swapBuffers) {
1310 entries++;
1311 }
1312 value = DSRegGXSTATSetFIFOEntries(value, entries);
1313 value = DSRegGXSTATSetFIFOLtHalf(value, entries < (DS_GX_FIFO_SIZE / 2));
1314 value = DSRegGXSTATSetFIFOEmpty(value, entries == 0);
1315
1316 if ((DSRegGXSTATGetDoIRQ(value) == 1 && entries < (DS_GX_FIFO_SIZE / 2)) ||
1317 (DSRegGXSTATGetDoIRQ(value) == 2 && entries == 0)) {
1318 DSRaiseIRQ(gx->p->ds9.cpu, gx->p->ds9.memory.io, DS_IRQ_GEOM_FIFO);
1319 }
1320
1321 value = DSRegGXSTATSetBusy(value, mTimingIsScheduled(&gx->p->ds9.timing, &gx->fifoEvent) || gx->swapBuffers);
1322
1323 gx->p->memory.io9[DS9_REG_GXSTAT_HI >> 1] = value >> 16;
1324
1325 struct GBADMA* dma = NULL;
1326 if (gx->dmaSource >= 0) {
1327 dma = &gx->p->ds9.memory.dma[gx->dmaSource];
1328 if (GBADMARegisterGetTiming9(dma->reg) != DS_DMA_TIMING_GEOM_FIFO) {
1329 gx->dmaSource = -1;
1330 } else if (GBADMARegisterIsEnable(dma->reg) && entries < (DS_GX_FIFO_SIZE / 2) && !dma->nextCount) {
1331 dma->nextCount = dma->count;
1332 dma->when = mTimingCurrentTime(&gx->p->ds9.timing);
1333 DSDMAUpdate(&gx->p->ds9);
1334 }
1335 }
1336}
1337
1338static void DSGXUnpackCommand(struct DSGX* gx, uint32_t command) {
1339 gx->outstandingCommand[0] = command;
1340 gx->outstandingCommand[1] = command >> 8;
1341 gx->outstandingCommand[2] = command >> 16;
1342 gx->outstandingCommand[3] = command >> 24;
1343 if (gx->outstandingCommand[0] >= DS_GX_CMD_MAX) {
1344 gx->outstandingCommand[0] = 0;
1345 }
1346 if (gx->outstandingCommand[1] >= DS_GX_CMD_MAX) {
1347 gx->outstandingCommand[1] = 0;
1348 }
1349 if (gx->outstandingCommand[2] >= DS_GX_CMD_MAX) {
1350 gx->outstandingCommand[2] = 0;
1351 }
1352 if (gx->outstandingCommand[3] >= DS_GX_CMD_MAX) {
1353 gx->outstandingCommand[3] = 0;
1354 }
1355 gx->outstandingParams[0] = _gxCommandParams[gx->outstandingCommand[0]];
1356 gx->outstandingParams[1] = _gxCommandParams[gx->outstandingCommand[1]];
1357 gx->outstandingParams[2] = _gxCommandParams[gx->outstandingCommand[2]];
1358 gx->outstandingParams[3] = _gxCommandParams[gx->outstandingCommand[3]];
1359 _flushOutstanding(gx);
1360 DSGXUpdateGXSTAT(gx);
1361}
1362
1363static void DSGXWriteFIFO(struct DSGX* gx, struct DSGXEntry entry) {
1364 if (CircleBufferSize(&gx->fifo) == (DS_GX_FIFO_SIZE * sizeof(entry))) {
1365 mLOG(DS_GX, INFO, "FIFO full");
1366 if (gx->p->cpuBlocked & DS_CPU_BLOCK_GX) {
1367 // Can happen from STM
1368 mTimingDeschedule(&gx->p->ds9.timing, &gx->fifoEvent);
1369 _fifoRun(&gx->p->ds9.timing, gx, 0);
1370 }
1371 gx->p->cpuBlocked |= DS_CPU_BLOCK_GX;
1372 gx->outstandingEntry = entry;
1373 gx->p->ds9.cpu->nextEvent = 0;
1374 return;
1375 }
1376 if (gx->outstandingCommand[0]) {
1377 entry.command = gx->outstandingCommand[0];
1378 if (gx->outstandingParams[0]) {
1379 --gx->outstandingParams[0];
1380 }
1381 if (!gx->outstandingParams[0]) {
1382 // TODO: improve this
1383 memmove(&gx->outstandingParams[0], &gx->outstandingParams[1], sizeof(gx->outstandingParams[0]) * 3);
1384 memmove(&gx->outstandingCommand[0], &gx->outstandingCommand[1], sizeof(gx->outstandingCommand[0]) * 3);
1385 gx->outstandingParams[3] = 0;
1386 gx->outstandingCommand[3] = 0;
1387 }
1388 } else {
1389 gx->outstandingParams[0] = _gxCommandParams[entry.command];
1390 if (gx->outstandingParams[0]) {
1391 --gx->outstandingParams[0];
1392 }
1393 if (gx->outstandingParams[0]) {
1394 gx->outstandingCommand[0] = entry.command;
1395 }
1396 }
1397 uint32_t cycles = _gxCommandCycleBase[entry.command];
1398 if (!cycles) {
1399 return;
1400 }
1401 if (CircleBufferSize(&gx->fifo) == 0 && CircleBufferSize(&gx->pipe) < (DS_GX_PIPE_SIZE * sizeof(entry))) {
1402 CircleBufferWrite(&gx->pipe, &entry, sizeof(entry));
1403 } else if (CircleBufferSize(&gx->fifo) < (DS_GX_FIFO_SIZE * sizeof(entry))) {
1404 CircleBufferWrite(&gx->fifo, &entry, sizeof(entry));
1405 }
1406 if (entry.command == DS_GX_CMD_BOX_TEST) {
1407 DSRegGXSTAT gxstat = gx->p->memory.io9[DS9_REG_GXSTAT_LO >> 1];
1408 gxstat = DSRegGXSTATFillTestBusy(gxstat);
1409 gxstat = DSRegGXSTATClearBoxTestResult(gxstat);
1410 gx->p->memory.io9[DS9_REG_GXSTAT_LO >> 1] = gxstat;
1411 }
1412 if (!gx->swapBuffers && !mTimingIsScheduled(&gx->p->ds9.timing, &gx->fifoEvent)) {
1413 mTimingSchedule(&gx->p->ds9.timing, &gx->fifoEvent, cycles);
1414 }
1415
1416 _flushOutstanding(gx);
1417}
1418
1419uint16_t DSGXWriteRegister(struct DSGX* gx, uint32_t address, uint16_t value) {
1420 uint16_t oldValue = gx->p->memory.io9[address >> 1];
1421 switch (address) {
1422 case DS9_REG_DISP3DCNT:
1423 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%04X", address, value);
1424 break;
1425 case DS9_REG_GXSTAT_LO:
1426 value = DSRegGXSTATIsMatrixStackError(value);
1427 if (value) {
1428 oldValue = DSRegGXSTATClearMatrixStackError(oldValue);
1429 oldValue = DSRegGXSTATClearProjMatrixStackLevel(oldValue);
1430 }
1431 value = oldValue;
1432 break;
1433 case DS9_REG_GXSTAT_HI:
1434 value = DSRegGXSTATIsDoIRQ(value << 16) >> 16;
1435 gx->p->memory.io9[address >> 1] = value;
1436 DSGXUpdateGXSTAT(gx);
1437 value = gx->p->memory.io9[address >> 1];
1438 break;
1439 default:
1440 if (address < DS9_REG_GXFIFO_00) {
1441 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%04X", address, value);
1442 } else if (address <= DS9_REG_GXFIFO_1F) {
1443 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%04X", address, value);
1444 } else if (address < DS9_REG_GXSTAT_LO) {
1445 struct DSGXEntry entry = {
1446 .command = (address & 0x1FC) >> 2,
1447 .params = {
1448 value,
1449 value >> 8,
1450 }
1451 };
1452 if (entry.command < DS_GX_CMD_MAX) {
1453 DSGXWriteFIFO(gx, entry);
1454 }
1455 } else {
1456 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%04X", address, value);
1457 }
1458 break;
1459 }
1460 return value;
1461}
1462
1463uint32_t DSGXWriteRegister32(struct DSGX* gx, uint32_t address, uint32_t value) {
1464 switch (address) {
1465 case DS9_REG_DISP3DCNT:
1466 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%08X", address, value);
1467 break;
1468 case DS9_REG_GXSTAT_LO:
1469 value = (value & 0xFFFF0000) | DSGXWriteRegister(gx, DS9_REG_GXSTAT_LO, value);
1470 value = (value & 0x0000FFFF) | (DSGXWriteRegister(gx, DS9_REG_GXSTAT_HI, value >> 16) << 16);
1471 break;
1472 default:
1473 if (address < DS9_REG_GXFIFO_00) {
1474 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%08X", address, value);
1475 } else if (address <= DS9_REG_GXFIFO_1F) {
1476 if (gx->outstandingParams[0]) {
1477 struct DSGXEntry entry = {
1478 .command = gx->outstandingCommand[0],
1479 .params = {
1480 value,
1481 value >> 8,
1482 value >> 16,
1483 value >> 24
1484 }
1485 };
1486 DSGXWriteFIFO(gx, entry);
1487 } else {
1488 DSGXUnpackCommand(gx, value);
1489 }
1490 } else if (address < DS9_REG_GXSTAT_LO) {
1491 struct DSGXEntry entry = {
1492 .command = (address & 0x1FC) >> 2,
1493 .params = {
1494 value,
1495 value >> 8,
1496 value >> 16,
1497 value >> 24
1498 }
1499 };
1500 DSGXWriteFIFO(gx, entry);
1501 } else {
1502 mLOG(DS_GX, STUB, "Unimplemented GX write %03X:%08X", address, value);
1503 }
1504 break;
1505 }
1506 return value;
1507}
1508
1509void DSGXFlush(struct DSGX* gx) {
1510 if (gx->swapBuffers) {
1511 gx->renderer->setRAM(gx->renderer, gx->vertexBuffer[gx->bufferIndex], gx->polygonBuffer[gx->bufferIndex], gx->polygonIndex, gx->wSort);
1512 gx->swapBuffers = false;
1513 gx->bufferIndex ^= 1;
1514 gx->vertexIndex = 0;
1515 gx->pendingVertexIndex = 0;
1516 gx->polygonIndex = 0;
1517 if (CircleBufferSize(&gx->fifo)) {
1518 mTimingSchedule(&gx->p->ds9.timing, &gx->fifoEvent, 0);
1519 }
1520 }
1521
1522 DSGXUpdateGXSTAT(gx);
1523}
1524
1525void DSGXScheduleDMA(struct DSCommon* dscore, int number, struct GBADMA* info) {
1526 UNUSED(info);
1527 dscore->p->gx.dmaSource = number;
1528}
1529
1530static void DSGXDummyRendererInit(struct DSGXRenderer* renderer) {
1531 UNUSED(renderer);
1532 // Nothing to do
1533}
1534
1535static void DSGXDummyRendererReset(struct DSGXRenderer* renderer) {
1536 UNUSED(renderer);
1537 // Nothing to do
1538}
1539
1540static void DSGXDummyRendererDeinit(struct DSGXRenderer* renderer) {
1541 UNUSED(renderer);
1542 // Nothing to do
1543}
1544
1545static void DSGXDummyRendererInvalidateTex(struct DSGXRenderer* renderer, int slot) {
1546 UNUSED(renderer);
1547 UNUSED(slot);
1548 // Nothing to do
1549}
1550
1551static void DSGXDummyRendererSetRAM(struct DSGXRenderer* renderer, struct DSGXVertex* verts, struct DSGXPolygon* polys, unsigned polyCount, bool wSort) {
1552 UNUSED(renderer);
1553 UNUSED(verts);
1554 UNUSED(polys);
1555 UNUSED(polyCount);
1556 UNUSED(wSort);
1557 // Nothing to do
1558}
1559
1560static void DSGXDummyRendererDrawScanline(struct DSGXRenderer* renderer, int y) {
1561 UNUSED(renderer);
1562 UNUSED(y);
1563 // Nothing to do
1564}
1565
1566static void DSGXDummyRendererGetScanline(struct DSGXRenderer* renderer, int y, const color_t** output) {
1567 UNUSED(renderer);
1568 UNUSED(y);
1569 *output = NULL;
1570 // Nothing to do
1571}