rsProgramVertex.cpp revision 748eb07e805b93c2bf79340d4937963ab739d17c 
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
20using namespace android;
21using namespace android::renderscript;
22
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 uint32_t * params, size_t paramLength)
28    : Program(rsc, shaderText, shaderLength, params, paramLength) {
29    mRSC->mHal.funcs.vertex.init(mRSC, this, mUserShader.string(), mUserShader.length(),
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] == NULL) {
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 *>(mHal.state.constants[0]->getPtr());
49        Matrix4x4 mvp;
50        mvp.load(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
51        Matrix4x4 t;
52        t.load(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET]);
53        mvp.multiply(&t);
54        for (uint32_t i = 0; i < 16; i ++) {
55            f[RS_PROGRAM_VERTEX_MVP_OFFSET + i] = mvp.m[i];
56        }
57    }
58
59    state->mLast.set(this);
60
61    rsc->mHal.funcs.vertex.setActive(rsc, this);
62}
63
64void ProgramVertex::setProjectionMatrix(Context *rsc, const rsc_Matrix *m) const {
65    if (isUserProgram()) {
66        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
67                      "Attempting to set fixed function emulation matrix projection on user program");
68        return;
69    }
70    if (mHal.state.constants[0] == NULL) {
71        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
72                      "Unable to set fixed function emulation matrix projection because allocation is missing");
73        return;
74    }
75    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
76    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m, sizeof(rsc_Matrix));
77    mDirty = true;
78}
79
80void ProgramVertex::setModelviewMatrix(Context *rsc, const rsc_Matrix *m) const {
81    if (isUserProgram()) {
82        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
83                      "Attempting to set fixed function emulation matrix modelview on user program");
84        return;
85    }
86    if (mHal.state.constants[0] == NULL) {
87        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
88                      "Unable to set fixed function emulation matrix modelview because allocation is missing");
89        return;
90    }
91    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
92    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m, sizeof(rsc_Matrix));
93    mDirty = true;
94}
95
96void ProgramVertex::setTextureMatrix(Context *rsc, const rsc_Matrix *m) const {
97    if (isUserProgram()) {
98        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
99                      "Attempting to set fixed function emulation matrix texture on user program");
100        return;
101    }
102    if (mHal.state.constants[0] == NULL) {
103        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
104                      "Unable to set fixed function emulation matrix texture because allocation is missing");
105        return;
106    }
107    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
108    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m, sizeof(rsc_Matrix));
109    mDirty = true;
110}
111
112void ProgramVertex::getProjectionMatrix(Context *rsc, rsc_Matrix *m) const {
113    if (isUserProgram()) {
114        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
115                      "Attempting to get fixed function emulation matrix projection on user program");
116        return;
117    }
118    if (mHal.state.constants[0] == NULL) {
119        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
120                      "Unable to get fixed function emulation matrix projection because allocation is missing");
121        return;
122    }
123    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
124    memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
125}
126
127void ProgramVertex::transformToScreen(Context *rsc, float *v4out, const float *v3in) const {
128    if (isUserProgram()) {
129        return;
130    }
131    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
132    Matrix4x4 mvp;
133    mvp.loadMultiply((Matrix4x4 *)&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET],
134                     (Matrix4x4 *)&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
135    mvp.vectorMultiply(v4out, v3in);
136}
137
138void ProgramVertex::serialize(OStream *stream) const {
139}
140
141ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {
142    return NULL;
143}
144
145
146///////////////////////////////////////////////////////////////////////
147
148ProgramVertexState::ProgramVertexState() {
149}
150
151ProgramVertexState::~ProgramVertexState() {
152}
153
154void ProgramVertexState::init(Context *rsc) {
155    ObjectBaseRef<const Element> matrixElem = Element::createRef(rsc, RS_TYPE_MATRIX_4X4,
156                                                                 RS_KIND_USER, false, 1);
157    ObjectBaseRef<const Element> f2Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
158                                                             RS_KIND_USER, false, 2);
159    ObjectBaseRef<const Element> f3Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
160                                                             RS_KIND_USER, false, 3);
161    ObjectBaseRef<const Element> f4Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
162                                                             RS_KIND_USER, false, 4);
163
164    Element::Builder constBuilder;
165    constBuilder.add(matrixElem.get(), "MV", 1);
166    constBuilder.add(matrixElem.get(), "P", 1);
167    constBuilder.add(matrixElem.get(), "TexMatrix", 1);
168    constBuilder.add(matrixElem.get(), "MVP", 1);
169    ObjectBaseRef<const Element> constInput = constBuilder.create(rsc);
170
171    Element::Builder inputBuilder;
172    inputBuilder.add(f4Elem.get(), "position", 1);
173    inputBuilder.add(f4Elem.get(), "color", 1);
174    inputBuilder.add(f3Elem.get(), "normal", 1);
175    inputBuilder.add(f2Elem.get(), "texture0", 1);
176    ObjectBaseRef<const Element> attrElem = inputBuilder.create(rsc);
177
178    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false);
179
180    String8 shaderString(RS_SHADER_INTERNAL);
181    shaderString.append("varying vec4 varColor;\n");
182    shaderString.append("varying vec2 varTex0;\n");
183    shaderString.append("void main() {\n");
184    shaderString.append("  gl_Position = UNI_MVP * ATTRIB_position;\n");
185    shaderString.append("  gl_PointSize = 1.0;\n");
186    shaderString.append("  varColor = ATTRIB_color;\n");
187    shaderString.append("  varTex0 = ATTRIB_texture0;\n");
188    shaderString.append("}\n");
189
190    uint32_t tmp[4];
191    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
192    tmp[1] = (uint32_t)inputType.get();
193    tmp[2] = RS_PROGRAM_PARAM_INPUT;
194    tmp[3] = (uint32_t)attrElem.get();
195
196    ProgramVertex *pv = new ProgramVertex(rsc, shaderString.string(), shaderString.length(),
197                                          NULL, 0, NULL, tmp, 4);
198    Allocation *alloc = Allocation::createAllocation(rsc, inputType.get(),
199                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
200    pv->bindAllocation(rsc, alloc, 0);
201
202    mDefaultAlloc.set(alloc);
203    mDefault.set(pv);
204
205    updateSize(rsc);
206}
207
208void ProgramVertexState::updateSize(Context *rsc) {
209    float *f = static_cast<float *>(mDefaultAlloc->getPtr());
210
211    float surfaceWidth = (float)rsc->getCurrentSurfaceWidth();
212    float surfaceHeight = (float)rsc->getCurrentSurfaceHeight();
213
214    Matrix4x4 m;
215    m.loadOrtho(0, surfaceWidth, surfaceHeight, 0, -1, 1);
216    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m.m, sizeof(m));
217    memcpy(&f[RS_PROGRAM_VERTEX_MVP_OFFSET], m.m, sizeof(m));
218
219    m.loadIdentity();
220    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m.m, sizeof(m));
221    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m.m, sizeof(m));
222}
223
224void ProgramVertexState::deinit(Context *rsc) {
225    mDefaultAlloc.clear();
226    mDefault.clear();
227    mLast.clear();
228}
229
230
231namespace android {
232namespace renderscript {
233
234RsProgramVertex rsi_ProgramVertexCreate(Context *rsc, const char * shaderText, size_t shaderLength,
235                                        const char** textureNames, size_t textureNamesCount,
236                                        const size_t *textureNamesLength,
237                                        const uint32_t * params, size_t paramLength) {
238    ProgramVertex *pv = new ProgramVertex(rsc, shaderText, shaderLength,
239                                          textureNames, textureNamesCount, textureNamesLength,
240                                          params, paramLength);
241    pv->incUserRef();
242    return pv;
243}
244
245}
246}
247