rsProgramVertex.cpp revision c19ff0177a7a0dadfc01b1990f822354fdc95991 
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,
25                             uint32_t shaderLength, const uint32_t * params,
26                             uint32_t paramLength)
27    : Program(rsc, shaderText, shaderLength, params, paramLength) {
28    mRSC->mHal.funcs.vertex.init(mRSC, this, mUserShader.string(), mUserShader.length());
29}
30
31ProgramVertex::~ProgramVertex() {
32    mRSC->mHal.funcs.vertex.destroy(mRSC, this);
33}
34
35void ProgramVertex::setup(Context *rsc, ProgramVertexState *state) {
36    if ((state->mLast.get() == this) && !mDirty) {
37        return;
38    }
39
40    if (!isUserProgram()) {
41        if (mHal.state.constants[0].get() == NULL) {
42            rsc->setError(RS_ERROR_FATAL_UNKNOWN,
43                          "Unable to set fixed function emulation matrices because allocation is missing");
44            return;
45        }
46        float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
47        Matrix4x4 mvp;
48        mvp.load(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
49        Matrix4x4 t;
50        t.load(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET]);
51        mvp.multiply(&t);
52        for (uint32_t i = 0; i < 16; i ++) {
53            f[RS_PROGRAM_VERTEX_MVP_OFFSET + i] = mvp.m[i];
54        }
55    }
56
57    state->mLast.set(this);
58
59    rsc->mHal.funcs.vertex.setActive(rsc, this);
60}
61
62void ProgramVertex::setProjectionMatrix(Context *rsc, const rsc_Matrix *m) const {
63    if (isUserProgram()) {
64        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
65                      "Attempting to set fixed function emulation matrix projection on user program");
66        return;
67    }
68    if (mHal.state.constants[0].get() == NULL) {
69        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
70                      "Unable to set fixed function emulation matrix projection because allocation is missing");
71        return;
72    }
73    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
74    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m, sizeof(rsc_Matrix));
75    mDirty = true;
76}
77
78void ProgramVertex::setModelviewMatrix(Context *rsc, const rsc_Matrix *m) const {
79    if (isUserProgram()) {
80        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
81                      "Attempting to set fixed function emulation matrix modelview on user program");
82        return;
83    }
84    if (mHal.state.constants[0].get() == NULL) {
85        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
86                      "Unable to set fixed function emulation matrix modelview because allocation is missing");
87        return;
88    }
89    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
90    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m, sizeof(rsc_Matrix));
91    mDirty = true;
92}
93
94void ProgramVertex::setTextureMatrix(Context *rsc, const rsc_Matrix *m) const {
95    if (isUserProgram()) {
96        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
97                      "Attempting to set fixed function emulation matrix texture on user program");
98        return;
99    }
100    if (mHal.state.constants[0].get() == NULL) {
101        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
102                      "Unable to set fixed function emulation matrix texture because allocation is missing");
103        return;
104    }
105    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
106    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m, sizeof(rsc_Matrix));
107    mDirty = true;
108}
109
110void ProgramVertex::getProjectionMatrix(Context *rsc, rsc_Matrix *m) const {
111    if (isUserProgram()) {
112        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
113                      "Attempting to get fixed function emulation matrix projection on user program");
114        return;
115    }
116    if (mHal.state.constants[0].get() == NULL) {
117        rsc->setError(RS_ERROR_FATAL_UNKNOWN,
118                      "Unable to get fixed function emulation matrix projection because allocation is missing");
119        return;
120    }
121    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
122    memcpy(m, &f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], sizeof(rsc_Matrix));
123}
124
125void ProgramVertex::transformToScreen(Context *rsc, float *v4out, const float *v3in) const {
126    if (isUserProgram()) {
127        return;
128    }
129    float *f = static_cast<float *>(mHal.state.constants[0]->getPtr());
130    Matrix4x4 mvp;
131    mvp.loadMultiply((Matrix4x4 *)&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET],
132                     (Matrix4x4 *)&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET]);
133    mvp.vectorMultiply(v4out, v3in);
134}
135
136void ProgramVertex::serialize(OStream *stream) const {
137}
138
139ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {
140    return NULL;
141}
142
143
144///////////////////////////////////////////////////////////////////////
145
146ProgramVertexState::ProgramVertexState() {
147}
148
149ProgramVertexState::~ProgramVertexState() {
150}
151
152void ProgramVertexState::init(Context *rsc) {
153    const Element *matrixElem = Element::create(rsc, RS_TYPE_MATRIX_4X4, RS_KIND_USER, false, 1);
154    const Element *f2Elem = Element::create(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 2);
155    const Element *f3Elem = Element::create(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 3);
156    const Element *f4Elem = Element::create(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
157
158    rsc->mStateElement.elementBuilderBegin();
159    rsc->mStateElement.elementBuilderAdd(matrixElem, "MV", 1);
160    rsc->mStateElement.elementBuilderAdd(matrixElem, "P", 1);
161    rsc->mStateElement.elementBuilderAdd(matrixElem, "TexMatrix", 1);
162    rsc->mStateElement.elementBuilderAdd(matrixElem, "MVP", 1);
163    const Element *constInput = rsc->mStateElement.elementBuilderCreate(rsc);
164
165    rsc->mStateElement.elementBuilderBegin();
166    rsc->mStateElement.elementBuilderAdd(f4Elem, "position", 1);
167    rsc->mStateElement.elementBuilderAdd(f4Elem, "color", 1);
168    rsc->mStateElement.elementBuilderAdd(f3Elem, "normal", 1);
169    rsc->mStateElement.elementBuilderAdd(f2Elem, "texture0", 1);
170    const Element *attrElem = rsc->mStateElement.elementBuilderCreate(rsc);
171
172    Type *inputType = Type::getType(rsc, constInput, 1, 0, 0, false, false);
173
174    String8 shaderString(RS_SHADER_INTERNAL);
175    shaderString.append("varying vec4 varColor;\n");
176    shaderString.append("varying vec2 varTex0;\n");
177    shaderString.append("void main() {\n");
178    shaderString.append("  gl_Position = UNI_MVP * ATTRIB_position;\n");
179    shaderString.append("  gl_PointSize = 1.0;\n");
180    shaderString.append("  varColor = ATTRIB_color;\n");
181    shaderString.append("  varTex0 = ATTRIB_texture0;\n");
182    shaderString.append("}\n");
183
184    uint32_t tmp[4];
185    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
186    tmp[1] = (uint32_t)inputType;
187    tmp[2] = RS_PROGRAM_PARAM_INPUT;
188    tmp[3] = (uint32_t)attrElem;
189
190    ProgramVertex *pv = new ProgramVertex(rsc, shaderString.string(),
191                                          shaderString.length(), tmp, 4);
192    Allocation *alloc = new Allocation(rsc, inputType, RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
193    pv->bindAllocation(rsc, alloc, 0);
194
195    mDefaultAlloc.set(alloc);
196    mDefault.set(pv);
197
198    updateSize(rsc);
199}
200
201void ProgramVertexState::updateSize(Context *rsc) {
202    float *f = static_cast<float *>(mDefaultAlloc->getPtr());
203
204    Matrix4x4 m;
205    m.loadOrtho(0,rsc->getWidth(), rsc->getHeight(),0, -1,1);
206    memcpy(&f[RS_PROGRAM_VERTEX_PROJECTION_OFFSET], m.m, sizeof(m));
207    memcpy(&f[RS_PROGRAM_VERTEX_MVP_OFFSET], m.m, sizeof(m));
208
209    m.loadIdentity();
210    memcpy(&f[RS_PROGRAM_VERTEX_MODELVIEW_OFFSET], m.m, sizeof(m));
211    memcpy(&f[RS_PROGRAM_VERTEX_TEXTURE_OFFSET], m.m, sizeof(m));
212}
213
214void ProgramVertexState::deinit(Context *rsc) {
215    mDefaultAlloc.clear();
216    mDefault.clear();
217    mLast.clear();
218}
219
220
221namespace android {
222namespace renderscript {
223
224RsProgramVertex rsi_ProgramVertexCreate(Context *rsc, const char * shaderText,
225                             uint32_t shaderLength, const uint32_t * params,
226                             uint32_t paramLength) {
227    ProgramVertex *pv = new ProgramVertex(rsc, shaderText, shaderLength, params, paramLength);
228    pv->incUserRef();
229    return pv;
230}
231
232}
233}
234