rsProgramFragment.cpp revision 7ffcaf20cbb115326f3d72a983835d6c314a4cef 
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
34ProgramFragment::ProgramFragment(Context *rsc, const char * shaderText,
35                                 uint32_t shaderLength, const uint32_t * params,
36                                 uint32_t paramLength) :
37    Program(rsc, shaderText, shaderLength, params, paramLength)
38{
39    mAllocFile = __FILE__;
40    mAllocLine = __LINE__;
41
42    mConstantColor[0] = 1.f;
43    mConstantColor[1] = 1.f;
44    mConstantColor[2] = 1.f;
45    mConstantColor[3] = 1.f;
46
47    init(rsc);
48}
49
50ProgramFragment::~ProgramFragment()
51{
52    if(mShaderID) {
53        mRSC->mShaderCache.cleanupFragment(mShaderID);
54    }
55}
56
57void ProgramFragment::setConstantColor(Context *rsc, float r, float g, float b, float a)
58{
59    if(isUserProgram()) {
60        LOGE("Attempting to set fixed function emulation color on user program");
61        rsc->setError(RS_ERROR_BAD_SHADER, "Cannot  set fixed function emulation color on user program");
62        return;
63    }
64    if(mConstants[0].get() == NULL) {
65        LOGE("Unable to set fixed function emulation color because allocation is missing");
66        rsc->setError(RS_ERROR_BAD_SHADER, "Unable to set fixed function emulation color because allocation is missing");
67        return;
68    }
69    mConstantColor[0] = r;
70    mConstantColor[1] = g;
71    mConstantColor[2] = b;
72    mConstantColor[3] = a;
73    memcpy(mConstants[0]->getPtr(), mConstantColor, 4*sizeof(float));
74    mDirty = true;
75}
76
77void ProgramFragment::setupGL2(Context *rsc, ProgramFragmentState *state, ShaderCache *sc)
78{
79    //LOGE("sgl2 frag1 %x", glGetError());
80    if ((state->mLast.get() == this) && !mDirty) {
81        return;
82    }
83    state->mLast.set(this);
84
85    rsc->checkError("ProgramFragment::setupGL2 start");
86
87    rsc->checkError("ProgramFragment::setupGL2 begin uniforms");
88    setupUserConstants(rsc, sc, true);
89
90    uint32_t numTexturesToBind = mTextureCount;
91    uint32_t numTexturesAvailable = rsc->getMaxFragmentTextures();
92    if(numTexturesToBind >= numTexturesAvailable) {
93        LOGE("Attempting to bind %u textures on shader id %u, but only %u are available",
94             mTextureCount, (uint32_t)this, numTexturesAvailable);
95        rsc->setError(RS_ERROR_BAD_SHADER, "Cannot bind more textuers than available");
96        numTexturesToBind = numTexturesAvailable;
97    }
98
99    for (uint32_t ct=0; ct < numTexturesToBind; ct++) {
100        glActiveTexture(GL_TEXTURE0 + ct);
101        if (!mTextures[ct].get()) {
102            LOGE("No texture bound for shader id %u, texture unit %u", (uint)this, ct);
103            rsc->setError(RS_ERROR_BAD_SHADER, "No texture bound");
104            continue;
105        }
106
107        mTextures[ct]->uploadCheck(rsc);
108        glBindTexture(GL_TEXTURE_2D, mTextures[ct]->getTextureID());
109        rsc->checkError("ProgramFragment::setupGL2 tex bind");
110        if (mSamplers[ct].get()) {
111            mSamplers[ct]->setupGL(rsc, mTextures[ct].get());
112        } else {
113            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
114            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
115            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
116            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
117            rsc->checkError("ProgramFragment::setupGL2 tex env");
118        }
119
120        glUniform1i(sc->fragUniformSlot(mTextureUniformIndexStart + ct), ct);
121        rsc->checkError("ProgramFragment::setupGL2 uniforms");
122    }
123
124    glActiveTexture(GL_TEXTURE0);
125    mDirty = false;
126    rsc->checkError("ProgramFragment::setupGL2");
127}
128
129void ProgramFragment::loadShader(Context *rsc) {
130    Program::loadShader(rsc, GL_FRAGMENT_SHADER);
131}
132
133void ProgramFragment::createShader()
134{
135    if (mUserShader.length() > 1) {
136        mShader.append("precision mediump float;\n");
137        appendUserConstants();
138        char buf[256];
139        for (uint32_t ct=0; ct < mTextureCount; ct++) {
140            sprintf(buf, "uniform sampler2D UNI_Tex%i;\n", ct);
141            mShader.append(buf);
142        }
143        mShader.append(mUserShader);
144    } else {
145        LOGE("ProgramFragment::createShader cannot create program, shader code not defined");
146        rsAssert(0);
147    }
148}
149
150void ProgramFragment::init(Context *rsc)
151{
152    mUniformCount = 0;
153    if (mUserShader.size() > 0) {
154        for (uint32_t ct=0; ct < mConstantCount; ct++) {
155            initAddUserElement(mConstantTypes[ct]->getElement(), mUniformNames, &mUniformCount, RS_SHADER_UNI);
156        }
157    }
158    mTextureUniformIndexStart = mUniformCount;
159    char buf[256];
160    for (uint32_t ct=0; ct < mTextureCount; ct++) {
161        sprintf(buf, "UNI_Tex%i", ct);
162        mUniformNames[mUniformCount++].setTo(buf);
163    }
164
165    createShader();
166}
167
168void ProgramFragment::serialize(OStream *stream) const
169{
170
171}
172
173ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream)
174{
175    return NULL;
176}
177
178ProgramFragmentState::ProgramFragmentState()
179{
180    mPF = NULL;
181}
182
183ProgramFragmentState::~ProgramFragmentState()
184{
185    delete mPF;
186
187}
188
189void ProgramFragmentState::init(Context *rsc)
190{
191    String8 shaderString(RS_SHADER_INTERNAL);
192    shaderString.append("varying lowp vec4 varColor;\n");
193    shaderString.append("varying vec2 varTex0;\n");
194    shaderString.append("void main() {\n");
195    shaderString.append("  lowp vec4 col = UNI_Color;\n");
196    shaderString.append("  gl_FragColor = col;\n");
197    shaderString.append("}\n");
198
199    const Element *colorElem = Element::create(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
200    rsc->mStateElement.elementBuilderBegin();
201    rsc->mStateElement.elementBuilderAdd(colorElem, "Color", 1);
202    const Element *constInput = rsc->mStateElement.elementBuilderCreate(rsc);
203
204    Type *inputType = new Type(rsc);
205    inputType->setElement(constInput);
206    inputType->setDimX(1);
207    inputType->compute();
208
209    uint32_t tmp[4];
210    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
211    tmp[1] = (uint32_t)inputType;
212    tmp[2] = RS_PROGRAM_PARAM_TEXTURE_COUNT;
213    tmp[3] = 0;
214
215    Allocation *constAlloc = new Allocation(rsc, inputType);
216    ProgramFragment *pf = new ProgramFragment(rsc, shaderString.string(),
217                                              shaderString.length(), tmp, 4);
218    pf->bindAllocation(rsc, constAlloc, 0);
219    pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
220
221    mDefault.set(pf);
222}
223
224void ProgramFragmentState::deinit(Context *rsc)
225{
226    mDefault.clear();
227    mLast.clear();
228}
229
230
231namespace android {
232namespace renderscript {
233
234RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc, const char * shaderText,
235                             uint32_t shaderLength, const uint32_t * params,
236                             uint32_t paramLength)
237{
238    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength, params, paramLength);
239    pf->incUserRef();
240    //LOGE("rsi_ProgramFragmentCreate %p", pf);
241    return pf;
242}
243
244}
245}
246
247