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#include "rsContext.h"
18#include "rsProgramFragment.h"
19
20#include <inttypes.h>
21
22namespace android {
23namespace renderscript {
24
25ProgramFragment::ProgramFragment(Context *rsc, const char * shaderText, size_t shaderLength,
26                                 const char** textureNames, size_t textureNamesCount, const size_t *textureNamesLength,
27                                 const uintptr_t * params, size_t paramLength)
28    : Program(rsc, shaderText, shaderLength, params, paramLength) {
29    mConstantColor[0] = 1.f;
30    mConstantColor[1] = 1.f;
31    mConstantColor[2] = 1.f;
32    mConstantColor[3] = 1.f;
33
34    mRSC->mHal.funcs.fragment.init(mRSC, this, mUserShader, mUserShaderLen,
35                                   textureNames, textureNamesCount, textureNamesLength);
36}
37
38ProgramFragment::~ProgramFragment() {
39    mRSC->mHal.funcs.fragment.destroy(mRSC, this);
40}
41
42void ProgramFragment::setConstantColor(Context *rsc, float r, float g, float b, float a) {
43    if (isUserProgram()) {
44        ALOGE("Attempting to set fixed function emulation color on user program");
45        rsc->setError(RS_ERROR_BAD_SHADER, "Cannot  set fixed function emulation color on user program");
46        return;
47    }
48    if (mHal.state.constants[0] == nullptr) {
49        ALOGE("Unable to set fixed function emulation color because allocation is missing");
50        rsc->setError(RS_ERROR_BAD_SHADER, "Unable to set fixed function emulation color because allocation is missing");
51        return;
52    }
53    mConstantColor[0] = r;
54    mConstantColor[1] = g;
55    mConstantColor[2] = b;
56    mConstantColor[3] = a;
57    void *p = rsc->mHal.funcs.allocation.lock1D(rsc, mHal.state.constants[0]);
58    memcpy(p, mConstantColor, 4*sizeof(float));
59    mDirty = true;
60    rsc->mHal.funcs.allocation.unlock1D(rsc, mHal.state.constants[0]);
61}
62
63void ProgramFragment::setup(Context *rsc, ProgramFragmentState *state) {
64    if ((state->mLast.get() == this) && !mDirty) {
65        return;
66    }
67    state->mLast.set(this);
68
69    for (uint32_t ct=0; ct < mHal.state.texturesCount; ct++) {
70        if (!mHal.state.textures[ct]) {
71            ALOGE("No texture bound for shader id %" PRIuPTR ", texture unit %u", (uintptr_t)this, ct);
72            rsc->setError(RS_ERROR_BAD_SHADER, "No texture bound");
73            continue;
74        }
75    }
76
77    rsc->mHal.funcs.fragment.setActive(rsc, this);
78}
79
80void ProgramFragment::serialize(Context *rsc, OStream *stream) const {
81}
82
83ProgramFragment *ProgramFragment::createFromStream(Context *rsc, IStream *stream) {
84    return nullptr;
85}
86
87ProgramFragmentState::ProgramFragmentState() {
88    mPF = nullptr;
89}
90
91ProgramFragmentState::~ProgramFragmentState() {
92    ObjectBase::checkDelete(mPF);
93    mPF = nullptr;
94}
95
96void ProgramFragmentState::init(Context *rsc) {
97    const char *shaderString =
98            RS_SHADER_INTERNAL
99            "varying lowp vec4 varColor;\n"
100            "varying vec2 varTex0;\n"
101            "void main() {\n"
102            "  lowp vec4 col = UNI_Color;\n"
103            "  gl_FragColor = col;\n"
104            "}\n";
105
106    ObjectBaseRef<const Element> colorElem = Element::createRef(rsc, RS_TYPE_FLOAT_32, RS_KIND_USER, false, 4);
107
108    const char *enames[] = { "Color" };
109    const Element *eins[] = {colorElem.get()};
110    ObjectBaseRef<const Element> constInput = Element::create(rsc, 1, eins, enames);
111
112    ObjectBaseRef<Type> inputType = Type::getTypeRef(rsc, constInput.get(), 1);
113
114    uintptr_t tmp[2];
115    tmp[0] = RS_PROGRAM_PARAM_CONSTANT;
116    tmp[1] = (uintptr_t)inputType.get();
117
118    Allocation *constAlloc = Allocation::createAllocation(rsc, inputType.get(),
119                              RS_ALLOCATION_USAGE_SCRIPT | RS_ALLOCATION_USAGE_GRAPHICS_CONSTANTS);
120    ProgramFragment *pf = new ProgramFragment(rsc, shaderString, strlen(shaderString),
121                                              nullptr, 0, nullptr, tmp, 2);
122    pf->bindAllocation(rsc, constAlloc, 0);
123    pf->setConstantColor(rsc, 1.0f, 1.0f, 1.0f, 1.0f);
124
125    mDefault.set(pf);
126}
127
128void ProgramFragmentState::deinit(Context *rsc) {
129    mDefault.clear();
130    mLast.clear();
131}
132
133RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc, const char * shaderText,
134                                            size_t shaderLength,
135                                            const char** textureNames,
136                                            size_t textureNamesCount,
137                                            const size_t *textureNamesLength,
138                                            const uintptr_t * params, size_t paramLength) {
139    ProgramFragment *pf = new ProgramFragment(rsc, shaderText, shaderLength,
140                                              textureNames, textureNamesCount, textureNamesLength,
141                                              params, paramLength);
142    pf->incUserRef();
143    //ALOGE("rsi_ProgramFragmentCreate %p", pf);
144    return pf;
145}
146
147} // namespace renderscript
148} // namespace android
149