rsProgramVertex.cpp revision 4edf030cbb7c6ac08dc563335c2af73c20f6e2e5 
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 namespace android;
22using namespace android::renderscript;
23
24
25ProgramVertex::ProgramVertex(Context *rsc, const char * shaderText, size_t shaderLength,
26                             const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
27
28                             const uint32_t * params, size_t paramLength)
29    : Program(rsc, shaderText, shaderLength, params, paramLength) {
30    mRSC->mHal.funcs.vertex.init(mRSC, this, mUserShader.string(), mUserShader.length(),
31                                 textureNames, textureNamesCount, textureNamesLength);
32}
33
34ProgramVertex::~ProgramVertex() {
35    mRSC->mHal.funcs.vertex.destroy(mRSC, this);
36}
37
38void ProgramVertex::setup(Context *rsc, ProgramVertexState *state) {
39    if ((state->mLast.get() == this) && !mDirty) {
40        return;
41    }
42
43    if (!isUserProgram()) {
44        if (mHal.state.constants[0] == NULL) {
45            rsc->setError(RS_ERROR_FATAL_UNKNOWN,
46                          "Unable to set fixed function emulation matrices because allocation is missing");
47            return;
48        }
49        float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
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    }
59
60    state->mLast.set(this);
61
62    rsc->mHal.funcs.vertex.setActive(rsc, this);
63}
64
65void ProgramVertex::setProjectionMatrix(Context *rsc, const rsc_Matrix *m) const {
66    if (isUserProgram()) {
67        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
68                      "Attempting to set fixed function emulation matrix projection on user program");
69        return;
70    }
71    if (mHal.state.constants[0] == NULL) {
72        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
73                      "Unable to set fixed function emulation matrix projection because allocation is missing");
74        return;
75    }
76    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
77    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m, sizeof(rsc_Matrix));
78    mDirty = true;
79}
80
81void ProgramVertex::setModelviewMatrix(Context *rsc, const rsc_Matrix *m) const {
82    if (isUserProgram()) {
83        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
84                      "Attempting to set fixed function emulation matrix modelview on user program");
85        return;
86    }
87    if (mHal.state.constants[0] == NULL) {
88        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
89                      "Unable to set fixed function emulation matrix modelview because allocation is missing");
90        return;
91    }
92    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
93    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m, sizeof(rsc_Matrix));
94    mDirty = true;
95}
96
97void ProgramVertex::setTextureMatrix(Context *rsc, const rsc_Matrix *m) const {
98    if (isUserProgram()) {
99        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
100                      "Attempting to set fixed function emulation matrix texture on user program");
101        return;
102    }
103    if (mHal.state.constants[0] == NULL) {
104        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
105                      "Unable to set fixed function emulation matrix texture because allocation is missing");
106        return;
107    }
108    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
109    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m, sizeof(rsc_Matrix));
110    mDirty = true;
111}
112
113void ProgramVertex::getProjectionMatrix(Context *rsc, rsc_Matrix *m) const {
114    if (isUserProgram()) {
115        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
116                      "Attempting to get fixed function emulation matrix projection on user program");
117        return;
118    }
119    if (mHal.state.constants[0] == NULL) {
120        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
121                      "Unable to get fixed function emulation matrix projection because allocation is missing");
122        return;
123    }
124    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
125    memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
126}
127
128void ProgramVertex::transformToScreen(Context *rsc, float *v4out, const float *v3in) const {
129    if (isUserProgram()) {
130        return;
131    }
132    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
133    Matrix4x4 mvp;
134    mvp.loadMultiply((Matrix4x4 *)&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET],
135                     (Matrix4x4 *)&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
136    mvp.vectorMultiply(v4out, v3in);
137}
138
139void ProgramVertex::serialize(OStream *stream) const {
140}
141
142ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {
143    return NULL;
144}
145
146
147///////////////////////////////////////////////////////////////////////
148
149ProgramVertexState::ProgramVertexState() {
150}
151
152ProgramVertexState::~ProgramVertexState() {
153}
154
155void ProgramVertexState::init(Context *rsc) {
156    ObjectBaseRef<const Element> matrixElem = Element::createRef(rsc, RS_TYPE_MATRIX_4X4,
157                                                                 RS_KIND_USER, false, 1);
158    ObjectBaseRef<const Element> f2Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
159                                                             RS_KIND_USER, false, 2);
160    ObjectBaseRef<const Element> f3Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
161                                                             RS_KIND_USER, false, 3);
162    ObjectBaseRef<const Element> f4Elem = Element::createRef(rsc, RS_TYPE_FLOAT_32,
163                                                             RS_KIND_USER, false, 4);
164
165    Element::Builder constBuilder;
166    constBuilder.add(matrixElem.get(), "MV", 1);
167    constBuilder.add(matrixElem.get(), "P", 1);
168    constBuilder.add(matrixElem.get(), "TexMatrix", 1);
169    constBuilder.add(matrixElem.get(), "MVP", 1);
170    ObjectBaseRef<const Element> constInput = constBuilder.create(rsc);
171
172    Element::Builder inputBuilder;
173    inputBuilder.add(f4Elem.get(), "position", 1);
174    inputBuilder.add(f4Elem.get(), "color", 1);
175    inputBuilder.add(f3Elem.get(), "normal", 1);
176    inputBuilder.add(f2Elem.get(), "texture0", 1);
177    ObjectBaseRef<const Element> attrElem = inputBuilder.create(rsc);
178
179    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1, 0, 0, false, false);
180
181    String8 shaderString(RS_SHADER_INTERNAL);
182    shaderString.append("varying vec4 varColor;\n");
183    shaderString.append("varying vec2 varTex0;\n");
184    shaderString.append("void main() {\n");
185    shaderString.append("  gl_Position = UNI_MVP * ATTRIB_position;\n");
186    shaderString.append("  gl_PointSize = 1.0;\n");
187    shaderString.append("  varColor = ATTRIB_color;\n");
188    shaderString.append("  varTex0 = ATTRIB_texture0;\n");
189    shaderString.append("}\n");
190
191    uint32_t tmp[4];
192    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
193    tmp[1] = (uint32_t)inputType.get();
194    tmp[2] = RS_PROGRAM_PARAM_INPUT;
195    tmp[3] = (uint32_t)attrElem.get();
196
197    ProgramVertex *pv = new ProgramVertex(rsc, shaderString.string(), shaderString.length(),
198                                          NULL, 0, NULL, tmp, 4);
199    Allocation *alloc = Allocation::createAllocation(rsc, inputType.get(),
200                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
201    pv->bindAllocation(rsc, alloc, 0);
202
203    mDefaultAlloc.set(alloc);
204    mDefault.set(pv);
205
206    updateSize(rsc);
207}
208
209void ProgramVertexState::updateSize(Context *rsc) {
210    float *f = static_cast<float *>(mDefaultAlloc->getPtr());
211
212    float surfaceWidth = (float)rsc->getCurrentSurfaceWidth();
213    float surfaceHeight = (float)rsc->getCurrentSurfaceHeight();
214
215    Matrix4x4 m;
216    m.loadOrtho(0, surfaceWidth, surfaceHeight, 0, -1, 1);
217    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m.m, sizeof(m));
218    memcpy(&f[RS_PROGRAM_VERTEX_MVP_OFFSET], m.m, sizeof(m));
219
220    m.loadIdentity();
221    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m.m, sizeof(m));
222    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m.m, sizeof(m));
223}
224
225void ProgramVertexState::deinit(Context *rsc) {
226    mDefaultAlloc.clear();
227    mDefault.clear();
228    mLast.clear();
229}
230
231
232namespace android {
233namespace renderscript {
234
235RsProgramVertex rsi_ProgramVertexCreate(Context *rsc, const char * shaderText, size_t shaderLength,
236                                        const char** textureNames, size_t textureNamesCount,
237                                        const size_t *textureNamesLength,
238                                        const uint32_t * params, size_t paramLength) {
239    ProgramVertex *pv = new ProgramVertex(rsc, shaderText, shaderLength,
240                                          textureNames, textureNamesCount, textureNamesLength,
241                                          params, paramLength);
242    pv->incUserRef();
243    return pv;
244}
245
246}
247}
248