1 //
2 // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6 // Implementation of the state class for mananging GLES 3 Vertex Array Objects.
7 //
8
9 #include "libGLESv2/VertexArray.h"
10 #include "libGLESv2/Buffer.h"
11 #include "libGLESv2/renderer/VertexArrayImpl.h"
12
13 namespace gl
14 {
15
VertexArray(rx::VertexArrayImpl * impl,GLuint id,size_t maxAttribs)16 VertexArray::VertexArray(rx::VertexArrayImpl *impl, GLuint id, size_t maxAttribs)
17 : mId(id),
18 mVertexArray(impl),
19 mVertexAttributes(maxAttribs)
20 {
21 ASSERT(impl != NULL);
22 }
23
~VertexArray()24 VertexArray::~VertexArray()
25 {
26 SafeDelete(mVertexArray);
27
28 for (size_t i = 0; i < getMaxAttribs(); i++)
29 {
30 mVertexAttributes[i].buffer.set(NULL);
31 }
32 mElementArrayBuffer.set(NULL);
33 }
34
id() const35 GLuint VertexArray::id() const
36 {
37 return mId;
38 }
39
detachBuffer(GLuint bufferName)40 void VertexArray::detachBuffer(GLuint bufferName)
41 {
42 for (size_t attribute = 0; attribute < getMaxAttribs(); attribute++)
43 {
44 if (mVertexAttributes[attribute].buffer.id() == bufferName)
45 {
46 mVertexAttributes[attribute].buffer.set(NULL);
47 }
48 }
49
50 if (mElementArrayBuffer.id() == bufferName)
51 {
52 mElementArrayBuffer.set(NULL);
53 }
54 }
55
getVertexAttribute(size_t attributeIndex) const56 const VertexAttribute& VertexArray::getVertexAttribute(size_t attributeIndex) const
57 {
58 ASSERT(attributeIndex < getMaxAttribs());
59 return mVertexAttributes[attributeIndex];
60 }
61
setVertexAttribDivisor(GLuint index,GLuint divisor)62 void VertexArray::setVertexAttribDivisor(GLuint index, GLuint divisor)
63 {
64 ASSERT(index < getMaxAttribs());
65 mVertexAttributes[index].divisor = divisor;
66 mVertexArray->setAttributeDivisor(index, divisor);
67 }
68
enableAttribute(unsigned int attributeIndex,bool enabledState)69 void VertexArray::enableAttribute(unsigned int attributeIndex, bool enabledState)
70 {
71 ASSERT(attributeIndex < getMaxAttribs());
72 mVertexAttributes[attributeIndex].enabled = enabledState;
73 mVertexArray->enableAttribute(attributeIndex, enabledState);
74 }
75
setAttributeState(unsigned int attributeIndex,gl::Buffer * boundBuffer,GLint size,GLenum type,bool normalized,bool pureInteger,GLsizei stride,const void * pointer)76 void VertexArray::setAttributeState(unsigned int attributeIndex, gl::Buffer *boundBuffer, GLint size, GLenum type,
77 bool normalized, bool pureInteger, GLsizei stride, const void *pointer)
78 {
79 ASSERT(attributeIndex < getMaxAttribs());
80 mVertexAttributes[attributeIndex].buffer.set(boundBuffer);
81 mVertexAttributes[attributeIndex].size = size;
82 mVertexAttributes[attributeIndex].type = type;
83 mVertexAttributes[attributeIndex].normalized = normalized;
84 mVertexAttributes[attributeIndex].pureInteger = pureInteger;
85 mVertexAttributes[attributeIndex].stride = stride;
86 mVertexAttributes[attributeIndex].pointer = pointer;
87 mVertexArray->setAttribute(attributeIndex, mVertexAttributes[attributeIndex]);
88 }
89
setElementArrayBuffer(Buffer * buffer)90 void VertexArray::setElementArrayBuffer(Buffer *buffer)
91 {
92 mElementArrayBuffer.set(buffer);
93 mVertexArray->setElementArrayBuffer(buffer);
94 }
95
96 }