1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "rsContext.h"
18#include "rsProgramVertex.h"
19#include "rsMatrix4x4.h"
20
21using android::renderscript::ProgramVertex;
22using android::renderscript::ProgramVertexState;
23
24ProgramVertex::ProgramVertex(Context *rsc, const char * shaderText, size_t shaderLength,
25                             const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
26
27                             const uintptr_t * params, size_t paramLength)
28    : Program(rsc, shaderText, shaderLength, params, paramLength) {
29    mRSC->mHal.funcs.vertex.init(mRSC, this, mUserShader, mUserShaderLen,
30                                 textureNames, textureNamesCount, textureNamesLength);
31}
32
33ProgramVertex::~ProgramVertex() {
34    mRSC->mHal.funcs.vertex.destroy(mRSC, this);
35}
36
37void ProgramVertex::setup(Context *rsc, ProgramVertexState *state) {
38    if ((state->mLast.get() == this) && !mDirty) {
39        return;
40    }
41
42    if (!isUserProgram()) {
43        if (mHal.state.constants[0] == nullptr) {
44            rsc->setError(RS_ERROR_FATAL_UNKNOWN,
45                          "Unable to set fixed function emulation matrices because allocation is missing");
46            return;
47        }
48        float *f = static_cast<float *>(rsc->mHal.funcs.allocation.lock1D(
49                rsc, mHal.state.constants[0]));
50        Matrix4x4 mvp;
51        mvp.load(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
52        Matrix4x4 t;
53        t.load(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET]);
54        mvp.multiply(&t);
55        for (uint32_t i = 0; i < 16; i ++) {
56            f[RS_PROGRAM_VERTEX_MVP_OFFSET + i] = mvp.m[i];
57        }
58        rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
59    }
60
61    state->mLast.set(this);
62
63    rsc->mHal.funcs.vertex.setActive(rsc, this);
64}
65
66void ProgramVertex::setProjectionMatrix(Context *rsc, const rsc_Matrix *m) const {
67    if (isUserProgram()) {
68        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
69                      "Attempting to set fixed function emulation matrix projection on user program");
70        return;
71    }
72    if (mHal.state.constants[0] == nullptr) {
73        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
74                      "Unable to set fixed function emulation matrix projection because allocation is missing");
75        return;
76    }
77    float *f = static_cast<float *>(rsc->mHal.funcs.allocation.lock1D(
78                rsc, mHal.state.constants[0]));
79    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m, sizeof(rsc_Matrix));
80    mDirty = true;
81    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
82}
83
84void ProgramVertex::setModelviewMatrix(Context *rsc, const rsc_Matrix *m) const {
85    if (isUserProgram()) {
86        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
87                      "Attempting to set fixed function emulation matrix modelview on user program");
88        return;
89    }
90    if (mHal.state.constants[0] == nullptr) {
91        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
92                      "Unable to set fixed function emulation matrix modelview because allocation is missing");
93        return;
94    }
95    float *f = static_cast<float *>(rsc->mHal.funcs.allocation.lock1D(
96                rsc, mHal.state.constants[0]));
97    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m, sizeof(rsc_Matrix));
98    mDirty = true;
99    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
100}
101
102void ProgramVertex::setTextureMatrix(Context *rsc, const rsc_Matrix *m) const {
103    if (isUserProgram()) {
104        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
105                      "Attempting to set fixed function emulation matrix texture on user program");
106        return;
107    }
108    if (mHal.state.constants[0] == nullptr) {
109        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
110                      "Unable to set fixed function emulation matrix texture because allocation is missing");
111        return;
112    }
113    float *f = static_cast<float *>(rsc->mHal.funcs.allocation.lock1D(
114            rsc, mHal.state.constants[0]));
115    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m, sizeof(rsc_Matrix));
116    mDirty = true;
117    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
118}
119
120void ProgramVertex::getProjectionMatrix(Context *rsc, rsc_Matrix *m) const {
121    if (isUserProgram()) {
122        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
123                      "Attempting to get fixed function emulation matrix projection on user program");
124        return;
125    }
126    if (mHal.state.constants[0] == nullptr) {
127        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
128                      "Unable to get fixed function emulation matrix projection because allocation is missing");
129        return;
130    }
131    float *f = static_cast<float *>(
132            rsc->mHal.funcs.allocation.lock1D(rsc, mHal.state.constants[0]));
133    memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
134    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
135}
136
137void ProgramVertex::transformToScreen(Context *rsc, float *v4out, const float *v3in) const {
138    if (isUserProgram()) {
139        return;
140    }
141    float *f = static_cast<float *>(
142            rsc->mHal.funcs.allocation.lock1D(rsc, mHal.state.constants[0]));
143    Matrix4x4 mvp;
144    mvp.loadMultiply((Matrix4x4 *)&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET],
145                     (Matrix4x4 *)&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
146    mvp.vectorMultiply(v4out, v3in);
147    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
148}
149
150void ProgramVertex::serialize(Context *rsc, OStream *stream) const {
151}
152
153ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {
154    return nullptr;
155}
156
157
158///////////////////////////////////////////////////////////////////////
159
160ProgramVertexState::ProgramVertexState() {
161}
162
163ProgramVertexState::~ProgramVertexState() {
164}
165
166void ProgramVertexState::init(Context *rsc) {
167    ObjectBaseRef<const Element> matrixElem = Element::createRef(rsc, RS_TYPE_MATRIX_4X4,
168                                                                 RS_KIND_USER, false, 1);
169    ObjectBaseRef<const Element> f2Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
170                                                             RS_KIND_USER, false, 2);
171    ObjectBaseRef<const Element> f3Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
172                                                             RS_KIND_USER, false, 3);
173    ObjectBaseRef<const Element> f4Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
174                                                             RS_KIND_USER, false, 4);
175
176    const char *ebn1[] = { "MV", "P", "TexMatrix", "MVP" };
177    const Element *ebe1[] = {matrixElem.get(), matrixElem.get(),
178            matrixElem.get(), matrixElem.get()};
179    ObjectBaseRef<const Element> constInput = Element::create(rsc, 4, ebe1, ebn1);
180
181    const char *ebn2[] = { "position", "color", "normal", "texture0" };
182    const Element *ebe2[] = {f4Elem.get(), f4Elem.get(), f3Elem.get(), f2Elem.get()};
183    ObjectBaseRef<const Element> attrElem = Element::create(rsc, 4, ebe2, ebn2);
184
185    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1);
186
187    const char *shaderString =
188            RS_SHADER_INTERNAL
189            "varying vec4 varColor;\n"
190            "varying vec2 varTex0;\n"
191            "void main() {\n"
192            "  gl_Position = UNI_MVP * ATTRIB_position;\n"
193            "  gl_PointSize = 1.0;\n"
194            "  varColor = ATTRIB_color;\n"
195            "  varTex0 = ATTRIB_texture0;\n"
196            "}\n";
197
198    uintptr_t tmp[4];
199    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
200    tmp[1] = (uintptr_t)inputType.get();
201    tmp[2] = RS_PROGRAM_PARAM_INPUT;
202    tmp[3] = (uintptr_t)attrElem.get();
203
204    ProgramVertex *pv = new ProgramVertex(rsc, shaderString, strlen(shaderString),
205                                          nullptr, 0, nullptr, tmp, 4);
206    Allocation *alloc = Allocation::createAllocation(rsc, inputType.get(),
207                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
208    pv->bindAllocation(rsc, alloc, 0);
209
210    mDefaultAlloc.set(alloc);
211    mDefault.set(pv);
212
213    updateSize(rsc);
214}
215
216void ProgramVertexState::updateSize(Context *rsc) {
217    float *f = static_cast<float *>(rsc->mHal.funcs.allocation.lock1D(rsc, mDefaultAlloc.get()));
218
219    float surfaceWidth = (float)rsc->getCurrentSurfaceWidth();
220    float surfaceHeight = (float)rsc->getCurrentSurfaceHeight();
221
222    Matrix4x4 m;
223    m.loadOrtho(0, surfaceWidth, surfaceHeight, 0, -1, 1);
224    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m.m, sizeof(m));
225    memcpy(&f[RS_PROGRAM_VERTEX_MVP_OFFSET], m.m, sizeof(m));
226
227    m.loadIdentity();
228    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m.m, sizeof(m));
229    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m.m, sizeof(m));
230    rsc->mHal.funcs.allocation.unlock1D(rsc, mDefaultAlloc.get());
231}
232
233void ProgramVertexState::deinit(Context *rsc) {
234    mDefaultAlloc.clear();
235    mDefault.clear();
236    mLast.clear();
237}
238
239
240namespace android {
241namespace renderscript {
242
243RsProgramVertex rsi_ProgramVertexCreate(Context *rsc, const char * shaderText, size_t shaderLength,
244                                        const char** textureNames, size_t textureNamesCount,
245                                        const size_t *textureNamesLength,
246                                        const uintptr_t * params, size_t paramLength) {
247    ProgramVertex *pv = new ProgramVertex(rsc, shaderText, shaderLength,
248                                          textureNames, textureNamesCount, textureNamesLength,
249                                          params, paramLength);
250    pv->incUserRef();
251    return pv;
252}
253
254} // namespace renderscript
255} // namespace android
256