The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/gpu/gl/GrGLVertexArray.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,122 @@
     1.4 +/*
     1.5 + * Copyright 2013 Google Inc.
     1.6 + *
     1.7 + * Use of this source code is governed by a BSD-style license that can be
     1.8 + * found in the LICENSE file.
     1.9 + */
    1.10 +
    1.11 +#include "GrGLVertexArray.h"
    1.12 +#include "GrGpuGL.h"
    1.13 +
    1.14 +#define GPUGL static_cast<GrGpuGL*>(this->getGpu())
    1.15 +#define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X);
    1.16 +
    1.17 +void GrGLAttribArrayState::set(const GrGpuGL* gpu,
    1.18 +                               int index,
    1.19 +                               GrGLVertexBuffer* buffer,
    1.20 +                               GrGLint size,
    1.21 +                               GrGLenum type,
    1.22 +                               GrGLboolean normalized,
    1.23 +                               GrGLsizei stride,
    1.24 +                               GrGLvoid* offset) {
    1.25 +    SkASSERT(index >= 0 && index < fAttribArrayStates.count());
    1.26 +    AttribArrayState* array = &fAttribArrayStates[index];
    1.27 +    if (!array->fEnableIsValid || !array->fEnabled) {
    1.28 +        GR_GL_CALL(gpu->glInterface(), EnableVertexAttribArray(index));
    1.29 +        array->fEnableIsValid = true;
    1.30 +        array->fEnabled = true;
    1.31 +    }
    1.32 +    if (!array->fAttribPointerIsValid ||
    1.33 +        array->fVertexBufferID != buffer->bufferID() ||
    1.34 +        array->fSize != size ||
    1.35 +        array->fNormalized != normalized ||
    1.36 +        array->fStride != stride ||
    1.37 +        array->fOffset != offset) {
    1.38 +
    1.39 +        buffer->bind();
    1.40 +        GR_GL_CALL(gpu->glInterface(), VertexAttribPointer(index,
    1.41 +                                                           size,
    1.42 +                                                           type,
    1.43 +                                                           normalized,
    1.44 +                                                           stride,
    1.45 +                                                           offset));
    1.46 +        array->fAttribPointerIsValid = true;
    1.47 +        array->fVertexBufferID = buffer->bufferID();
    1.48 +        array->fSize = size;
    1.49 +        array->fNormalized = normalized;
    1.50 +        array->fStride = stride;
    1.51 +        array->fOffset = offset;
    1.52 +    }
    1.53 +}
    1.54 +
    1.55 +void GrGLAttribArrayState::disableUnusedArrays(const GrGpuGL* gpu, uint64_t usedMask) {
    1.56 +    int count = fAttribArrayStates.count();
    1.57 +    for (int i = 0; i < count; ++i) {
    1.58 +        if (!(usedMask & 0x1)) {
    1.59 +            if (!fAttribArrayStates[i].fEnableIsValid || fAttribArrayStates[i].fEnabled) {
    1.60 +                GR_GL_CALL(gpu->glInterface(), DisableVertexAttribArray(i));
    1.61 +                fAttribArrayStates[i].fEnableIsValid = true;
    1.62 +                fAttribArrayStates[i].fEnabled = false;
    1.63 +            }
    1.64 +        } else {
    1.65 +            SkASSERT(fAttribArrayStates[i].fEnableIsValid && fAttribArrayStates[i].fEnabled);
    1.66 +        }
    1.67 +        // if the count is greater than 64 then this will become 0 and we will disable arrays 64+.
    1.68 +        usedMask >>= 1;
    1.69 +    }
    1.70 +}
    1.71 +
    1.72 +///////////////////////////////////////////////////////////////////////////////////////////////////
    1.73 +
    1.74 +GrGLVertexArray::GrGLVertexArray(GrGpuGL* gpu, GrGLint id, int attribCount)
    1.75 +    : GrResource(gpu, false)
    1.76 +    , fID(id)
    1.77 +    , fAttribArrays(attribCount)
    1.78 +    , fIndexBufferIDIsValid(false) {
    1.79 +}
    1.80 +
    1.81 +void GrGLVertexArray::onAbandon() {
    1.82 +    fID = 0;
    1.83 +    INHERITED::onAbandon();
    1.84 +}
    1.85 +
    1.86 +void GrGLVertexArray::onRelease() {
    1.87 +    if (0 != fID) {
    1.88 +        GL_CALL(DeleteVertexArrays(1, &fID));
    1.89 +        GPUGL->notifyVertexArrayDelete(fID);
    1.90 +        fID = 0;
    1.91 +    }
    1.92 +    INHERITED::onRelease();
    1.93 +}
    1.94 +
    1.95 +GrGLAttribArrayState* GrGLVertexArray::bind() {
    1.96 +    if (0 == fID) {
    1.97 +        return NULL;
    1.98 +    }
    1.99 +    GPUGL->bindVertexArray(fID);
   1.100 +    return &fAttribArrays;
   1.101 +}
   1.102 +
   1.103 +GrGLAttribArrayState* GrGLVertexArray::bindWithIndexBuffer(const GrGLIndexBuffer* buffer) {
   1.104 +    GrGLAttribArrayState* state = this->bind();
   1.105 +    if (NULL != state && NULL != buffer) {
   1.106 +        GrGLuint bufferID = buffer->bufferID();
   1.107 +        if (!fIndexBufferIDIsValid || bufferID != fIndexBufferID) {
   1.108 +            GL_CALL(BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, bufferID));
   1.109 +            fIndexBufferIDIsValid = true;
   1.110 +            fIndexBufferID = bufferID;
   1.111 +        }
   1.112 +    }
   1.113 +    return state;
   1.114 +}
   1.115 +
   1.116 +void GrGLVertexArray::notifyIndexBufferDelete(GrGLuint bufferID) {
   1.117 +    if (fIndexBufferIDIsValid && bufferID == fIndexBufferID) {
   1.118 +        fIndexBufferID = 0;
   1.119 +    }
   1.120 + }
   1.121 +
   1.122 +void GrGLVertexArray::invalidateCachedState() {
   1.123 +    fAttribArrays.invalidate();
   1.124 +    fIndexBufferIDIsValid = false;
   1.125 +}