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| 1 /* |
| 2 * Copyright 2013 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "GrGLVertexArray.h" |
| 9 #include "GrGpuGL.h" |
| 10 |
| 11 #define GPUGL static_cast<GrGpuGL*>(this->getGpu()) |
| 12 #define GL_CALL(X) GR_GL_CALL(GPUGL->glInterface(), X); |
| 13 |
| 14 void GrGLAttribArrayState::set(const GrGpuGL* gpu, |
| 15 int index, |
| 16 GrGLVertexBuffer* buffer, |
| 17 GrGLint size, |
| 18 GrGLenum type, |
| 19 GrGLboolean normalized, |
| 20 GrGLsizei stride, |
| 21 GrGLvoid* offset) { |
| 22 GrAssert(index >= 0 && index < fAttribArrayStates.count()); |
| 23 AttribArrayState* array = &fAttribArrayStates[index]; |
| 24 if (!array->fEnableIsValid || !array->fEnabled) { |
| 25 GR_GL_CALL(gpu->glInterface(), EnableVertexAttribArray(index)); |
| 26 array->fEnableIsValid = true; |
| 27 array->fEnabled = true; |
| 28 } |
| 29 if (!array->fAttribPointerIsValid || |
| 30 array->fVertexBufferID != buffer->bufferID() || |
| 31 array->fSize != size || |
| 32 array->fNormalized != normalized || |
| 33 array->fStride != stride || |
| 34 array->fOffset != offset) { |
| 35 |
| 36 buffer->bind(); |
| 37 GR_GL_CALL(gpu->glInterface(), VertexAttribPointer(index, |
| 38 size, |
| 39 type, |
| 40 normalized, |
| 41 stride, |
| 42 offset)); |
| 43 array->fAttribPointerIsValid = true; |
| 44 array->fVertexBufferID = buffer->bufferID(); |
| 45 array->fSize = size; |
| 46 array->fNormalized = normalized; |
| 47 array->fStride = stride; |
| 48 array->fOffset = offset; |
| 49 } |
| 50 } |
| 51 |
| 52 void GrGLAttribArrayState::disableUnusedAttribArrays(const GrGpuGL* gpu, uint64_
t usedMask) { |
| 53 int count = fAttribArrayStates.count(); |
| 54 for (int i = 0; i < count; ++i) { |
| 55 if (!(usedMask & 0x1)) { |
| 56 if (!fAttribArrayStates[i].fEnableIsValid || fAttribArrayStates[i].f
Enabled) { |
| 57 GR_GL_CALL(gpu->glInterface(), DisableVertexAttribArray(i)); |
| 58 fAttribArrayStates[i].fEnableIsValid = true; |
| 59 fAttribArrayStates[i].fEnabled = false; |
| 60 } |
| 61 } |
| 62 // if the count is greater than 64 then this will become 0 and we will d
isable arrays 64+. |
| 63 usedMask >>= 1; |
| 64 } |
| 65 } |
| 66 |
| 67 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
| 68 |
| 69 GrGLVertexArray::GrGLVertexArray(GrGpuGL* gpu, GrGLint id, int attribCount) |
| 70 : GrResource(gpu, false) |
| 71 , fID(id) |
| 72 , fAttribArrays(attribCount) |
| 73 , fIndexBufferIDIsValid(false) { |
| 74 } |
| 75 |
| 76 void GrGLVertexArray::onAbandon() { |
| 77 fID = 0; |
| 78 INHERITED::onAbandon(); |
| 79 } |
| 80 |
| 81 void GrGLVertexArray::onRelease() { |
| 82 if (0 != fID) { |
| 83 GL_CALL(DeleteVertexArrays(1, &fID)); |
| 84 GPUGL->notifyVertexArrayDelete(fID); |
| 85 fID = 0; |
| 86 } |
| 87 INHERITED::onRelease(); |
| 88 } |
| 89 |
| 90 GrGLAttribArrayState* GrGLVertexArray::bind() { |
| 91 if (0 == fID) { |
| 92 return NULL; |
| 93 } |
| 94 GPUGL->bindVertexArray(fID); |
| 95 return &fAttribArrays; |
| 96 } |
| 97 |
| 98 GrGLAttribArrayState* GrGLVertexArray::bindWithIndexBuffer(const GrGLIndexBuffer
* buffer) { |
| 99 GrGLAttribArrayState* state = this->bind(); |
| 100 if (NULL != state && NULL != buffer) { |
| 101 GrGLuint bufferID = buffer->bufferID(); |
| 102 if (!fIndexBufferIDIsValid || bufferID != fIndexBufferID) { |
| 103 GL_CALL(BindBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, bufferID)); |
| 104 fIndexBufferIDIsValid = true; |
| 105 fIndexBufferID = bufferID; |
| 106 } |
| 107 } |
| 108 return state; |
| 109 } |
| 110 |
| 111 void GrGLVertexArray::notifyIndexBufferDelete(GrGLuint bufferID) { |
| 112 if (fIndexBufferIDIsValid && bufferID == fIndexBufferID) { |
| 113 fIndexBufferID = 0; |
| 114 } |
| 115 } |
| 116 |
| 117 void GrGLVertexArray::invalidateCachedState() { |
| 118 int count = fAttribArrays.count(); |
| 119 for (int i = 0; i < count; ++i) { |
| 120 fAttribArrays.invalidate(); |
| 121 } |
| 122 fIndexBufferIDIsValid = false; |
| 123 } |
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