/libs/rs/driver/rsdVertexArray.cpp

  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 <rs_hal.h>
 18#include <rsContext.h>
 19
 20#include <GLES/gl.h>
 21#include <GLES2/gl2.h>
 22
 23#include "rsdGL.h"
 24#include "rsdCore.h"
 25#include "rsdVertexArray.h"
 26#include "rsdShaderCache.h"
 27
 28using namespace android;
 29using namespace android::renderscript;
 30
 31RsdVertexArray::RsdVertexArray(const Attrib *attribs, uint32_t numAttribs) {
 32    mAttribs = attribs;
 33    mCount = numAttribs;
 34}
 35
 36RsdVertexArray::~RsdVertexArray() {
 37}
 38
 39RsdVertexArray::Attrib::Attrib() {
 40    clear();
 41}
 42
 43void RsdVertexArray::Attrib::clear() {
 44    buffer = 0;
 45    offset = 0;
 46    type = 0;
 47    size = 0;
 48    stride = 0;
 49    ptr = NULL;
 50    normalized = false;
 51    name.setTo("");
 52}
 53
 54void RsdVertexArray::Attrib::set(uint32_t type, uint32_t size, uint32_t stride,
 55                              bool normalized, uint32_t offset,
 56                              const char *name) {
 57    clear();
 58    this->type = type;
 59    this->size = size;
 60    this->offset = offset;
 61    this->normalized = normalized;
 62    this->stride = stride;
 63    this->name.setTo(name);
 64}
 65
 66void RsdVertexArray::logAttrib(uint32_t idx, uint32_t slot) const {
 67    if (idx == 0) {
 68        LOGV("Starting vertex attribute binding");
 69    }
 70    LOGV("va %i: slot=%i name=%s buf=%i ptr=%p size=%i  type=0x%x  stride=0x%x  norm=%i  offset=0x%x",
 71         idx, slot,
 72         mAttribs[idx].name.string(),
 73         mAttribs[idx].buffer,
 74         mAttribs[idx].ptr,
 75         mAttribs[idx].size,
 76         mAttribs[idx].type,
 77         mAttribs[idx].stride,
 78         mAttribs[idx].normalized,
 79         mAttribs[idx].offset);
 80}
 81
 82void RsdVertexArray::setup(const Context *rsc) const {
 83
 84    RsdHal *dc = (RsdHal *)rsc->mHal.drv;
 85    RsdVertexArrayState *state = dc->gl.vertexArrayState;
 86    RsdShaderCache *sc = dc->gl.shaderCache;
 87
 88    rsdGLCheckError(rsc, "RsdVertexArray::setup start");
 89    uint32_t maxAttrs = state->mAttrsEnabledSize;
 90
 91    for (uint32_t ct=1; ct < maxAttrs; ct++) {
 92        if(state->mAttrsEnabled[ct]) {
 93            glDisableVertexAttribArray(ct);
 94            state->mAttrsEnabled[ct] = false;
 95        }
 96    }
 97
 98    rsdGLCheckError(rsc, "RsdVertexArray::setup disabled");
 99    for (uint32_t ct=0; ct < mCount; ct++) {
100        int32_t slot = sc->vtxAttribSlot(mAttribs[ct].name);
101        if (rsc->props.mLogShadersAttr) {
102            logAttrib(ct, slot);
103        }
104        if (slot < 0 || slot >= (int32_t)maxAttrs) {
105            continue;
106        }
107        glEnableVertexAttribArray(slot);
108        state->mAttrsEnabled[slot] = true;
109        glBindBuffer(GL_ARRAY_BUFFER, mAttribs[ct].buffer);
110        glVertexAttribPointer(slot,
111                              mAttribs[ct].size,
112                              mAttribs[ct].type,
113                              mAttribs[ct].normalized,
114                              mAttribs[ct].stride,
115                              mAttribs[ct].ptr + mAttribs[ct].offset);
116    }
117    rsdGLCheckError(rsc, "RsdVertexArray::setup done");
118}
119////////////////////////////////////////////
120RsdVertexArrayState::RsdVertexArrayState() {
121    mAttrsEnabled = NULL;
122    mAttrsEnabledSize = 0;
123}
124
125RsdVertexArrayState::~RsdVertexArrayState() {
126    if (mAttrsEnabled) {
127        delete[] mAttrsEnabled;
128        mAttrsEnabled = NULL;
129    }
130}
131void RsdVertexArrayState::init(uint32_t maxAttrs) {
132    mAttrsEnabledSize = maxAttrs;
133    mAttrsEnabled = new bool[mAttrsEnabledSize];
134    for (uint32_t ct = 0; ct < mAttrsEnabledSize; ct++) {
135        mAttrsEnabled[ct] = false;
136    }
137}
138