rsProgramFragment.cpp revision df9f1c2142ba5a7dfe475f130d51044f0c0c04a4 
1/*
2 * Copyright (C) 2009 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#ifndef ANDROID_RS_BUILD_FOR_HOST
18#include "rsContext.h"
19#include <GLES/gl.h>
20#include <GLES/glext.h>
21#include <GLES2/gl2.h>
22#include <GLES2/gl2ext.h>
23#else
24#include "rsContextHostStub.h"
25#include <OpenGL/gl.h>
26#include <OpenGL/glext.h>
27#endif //ANDROID_RS_BUILD_FOR_HOST
28
29#include "rsProgramFragment.h"
30
31using namespace android;
32using namespace android::renderscript;
33
34
35ProgramFragment::ProgramFragment(Context *rsc, const uint32_t * params,
36                                 uint32_t paramLength) :
37    Program(rsc)
38{
39    mAllocFile = __FILE__;
40    mAllocLine = __LINE__;
41    rsAssert(paramLength == 6);
42
43    mConstantColor[0] = 1.f;
44    mConstantColor[1] = 1.f;
45    mConstantColor[2] = 1.f;
46    mConstantColor[3] = 1.f;
47
48    mEnvModes[0] = (RsTexEnvMode)params[0];
49    mTextureFormats[0] = params[1];
50    mEnvModes[1] = (RsTexEnvMode)params[2];
51    mTextureFormats[1] = params[3];
52    mPointSpriteEnable = params[4] != 0;
53    mVaryingColor = false;
54    if (paramLength > 5)
55        mVaryingColor = params[5] != 0;
56
57    mTextureEnableMask = 0;
58    if (mEnvModes[0]) {
59        mTextureEnableMask |= 1;
60    }
61    if (mEnvModes[1]) {
62        mTextureEnableMask |= 2;
63    }
64
65    init(rsc);
66}
67
68ProgramFragment::ProgramFragment(Context *rsc, const char * shaderText,
69                                 uint32_t shaderLength, const uint32_t * params,
70                                 uint32_t paramLength) :
71    Program(rsc, shaderText, shaderLength, params, paramLength)
72{
73    mAllocFile = __FILE__;
74    mAllocLine = __LINE__;
75
76    mConstantColor[0] = 1.f;
77    mConstantColor[1] = 1.f;
78    mConstantColor[2] = 1.f;
79    mConstantColor[3] = 1.f;
80
81    mTextureEnableMask = (1 << mTextureCount) -1;
82
83    init(rsc);
84}
85
86
87ProgramFragment::~ProgramFragment()
88{
89}
90
91void ProgramFragment::setConstantColor(float r, float g, float b, float a)
92{
93    if(isUserProgram()) {
94        return;
95    }
96    mConstantColor[0] = r;
97    mConstantColor[1] = g;
98    mConstantColor[2] = b;
99    mConstantColor[3] = a;
100    memcpy(mConstants[0]->getPtr(), mConstantColor, 4*sizeof(float));
101    mDirty = true;
102}
103
104void ProgramFragment::setupGL2(const Context *rsc, ProgramFragmentState *state, ShaderCache *sc)
105{
106    //LOGE("sgl2 frag1 %x", glGetError());
107    if ((state->mLast.get() == this) && !mDirty) {
108        return;
109    }
110    state->mLast.set(this);
111
112    rsc->checkError("ProgramFragment::setupGL2 start");
113
114    rsc->checkError("ProgramFragment::setupGL2 begin uniforms");
115    setupUserConstants(sc, true);
116
117    for (uint32_t ct=0; ct < MAX_TEXTURE; ct++) {
118        glActiveTexture(GL_TEXTURE0 + ct);
119        if (!(mTextureEnableMask & (1 << ct)) || !mTextures[ct].get()) {
120            continue;
121        }
122
123        mTextures[ct]->uploadCheck(rsc);
124        glBindTexture(GL_TEXTURE_2D, mTextures[ct]->getTextureID());
125        rsc->checkError("ProgramFragment::setupGL2 tex bind");
126        if (mSamplers[ct].get()) {
127            mSamplers[ct]->setupGL(rsc, mTextures[ct].get());
128        } else {
129            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
130            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
131            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
132            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
133            rsc->checkError("ProgramFragment::setupGL2 tex env");
134        }
135
136        glUniform1i(sc->fragUniformSlot(mTextureUniformIndexStart + ct), ct);
137        rsc->checkError("ProgramFragment::setupGL2 uniforms");
138    }
139
140    glActiveTexture(GL_TEXTURE0);
141    mDirty = false;
142    rsc->checkError("ProgramFragment::setupGL2");
143}
144
145void ProgramFragment::loadShader(Context *rsc) {
146    Program::loadShader(rsc, GL_FRAGMENT_SHADER);
147}
148
149void ProgramFragment::createShader()
150{
151    if (mUserShader.length() > 1) {
152        mShader.append("precision mediump float;\n");
153        appendUserConstants();
154        for (uint32_t ct=0; ct < mTextureCount; ct++) {
155            char buf[256];
156            sprintf(buf, "uniform sampler2D UNI_Tex%i;\n", ct);
157            mShader.append(buf);
158        }
159        mShader.append(mUserShader);
160    } else {
161        LOGE("ProgramFragment::createShader cannot create program, shader code not defined");
162        rsAssert(0);
163    }
164}
165
166void ProgramFragment::init(Context *rsc)
167{
168    mUniformCount = 0;
169    if (mUserShader.size() > 0) {
170        for (uint32_t ct=0; ct < mConstantCount; ct++) {
171            initAddUserElement(mConstantTypes[ct]->getElement(), mUniformNames, &mUniformCount, "UNI_");
172        }
173    }
174    mTextureUniformIndexStart = mUniformCount;
175    mUniformNames[mUniformCount++].setTo("UNI_Tex0");
176    mUniformNames[mUniformCount++].setTo("UNI_Tex1");
177
178    createShader();
179}
180
181void ProgramFragment::serialize(OStream *stream) const
182{
183
184}
185
186ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream)
187{
188    return NULL;
189}
190
191ProgramFragmentState::ProgramFragmentState()
192{
193    mPF = NULL;
194}
195
196ProgramFragmentState::~ProgramFragmentState()
197{
198    delete mPF;
199
200}
201
202void ProgramFragmentState::init(Context *rsc)
203{
204    String8 shaderString(RS_SHADER_INTERNAL);
205    shaderString.append("varying lowp vec4 varColor;\n");
206    shaderString.append("varying vec4 varTex0;\n");
207    shaderString.append("void main() {\n");
208    shaderString.append("  lowp vec4 col = UNI_Color;\n");
209    shaderString.append("  gl_FragColor = col;\n");
210    shaderString.append("}\n");
211
212    const Element *colorElem = Element::create(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
213    rsc->mStateElement.elementBuilderBegin();
214    rsc->mStateElement.elementBuilderAdd(colorElem, "Color", 1);
215    const Element *constInput = rsc->mStateElement.elementBuilderCreate(rsc);
216
217    Type *inputType = new Type(rsc);
218    inputType->setElement(constInput);
219    inputType->setDimX(1);
220    inputType->compute();
221
222    uint32_t tmp[4];
223    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
224    tmp[1] = (uint32_t)inputType;
225    tmp[2] = RS_PROGRAM_PARAM_TEXTURE_COUNT;
226    tmp[3] = 0;
227
228    Allocation *constAlloc = new Allocation(rsc, inputType);
229    ProgramFragment *pf = new ProgramFragment(rsc, shaderString.string(),
230                                              shaderString.length(), tmp, 4);
231    pf->bindAllocation(constAlloc, 0);
232    pf->setConstantColor(1.0f, 1.0f, 1.0f, 1.0f);
233
234    mDefault.set(pf);
235}
236
237void ProgramFragmentState::deinit(Context *rsc)
238{
239    mDefault.clear();
240    mLast.clear();
241}
242
243
244namespace android {
245namespace renderscript {
246
247RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc,
248                                            const uint32_t * params,
249                                            uint32_t paramLength)
250{
251    ProgramFragment *pf = new ProgramFragment(rsc, params, paramLength);
252    pf->incUserRef();
253    //LOGE("rsi_ProgramFragmentCreate %p", pf);
254    return pf;
255}
256
257RsProgramFragment rsi_ProgramFragmentCreate2(Context *rsc, const char * shaderText,
258                             uint32_t shaderLength, const uint32_t * params,
259                             uint32_t paramLength)
260{
261    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength, params, paramLength);
262    pf->incUserRef();
263    //LOGE("rsi_ProgramFragmentCreate2 %p", pf);
264    return pf;
265}
266
267}
268}
269
270