/src/mozilla-central/dom/canvas/WebGLVertexAttribData.cpp

Source (jump to first uncovered line)
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "WebGLVertexAttribData.h"

#include "GLContext.h"
#include "WebGLBuffer.h"

namespace mozilla {

static uint8_t
CalcBytesPerVertex(GLenum type, uint8_t size)
{
    uint8_t bytesPerType;
    switch (type) {
    case LOCAL_GL_INT_2_10_10_10_REV:
    case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
        return 4;

    case LOCAL_GL_BYTE:
    case LOCAL_GL_UNSIGNED_BYTE:
        bytesPerType = 1;
        break;

    case LOCAL_GL_HALF_FLOAT:
    case LOCAL_GL_SHORT:
    case LOCAL_GL_UNSIGNED_SHORT:
        bytesPerType = 2;
        break;

    case LOCAL_GL_FIXED: // GLES 3.0.4 p9: 32-bit signed, with 16 fractional bits.
    case LOCAL_GL_FLOAT:
    case LOCAL_GL_INT:
    case LOCAL_GL_UNSIGNED_INT:
        bytesPerType = 4;
        break;

    default:
        MOZ_CRASH("Bad `type`.");
    }

    return bytesPerType * size;
}

static GLenum
AttribPointerBaseType(bool integerFunc, GLenum type)
{
    if (!integerFunc)
        return LOCAL_GL_FLOAT;

    switch (type) {
    case LOCAL_GL_BYTE:
    case LOCAL_GL_SHORT:
    case LOCAL_GL_INT:
        return LOCAL_GL_INT;

    case LOCAL_GL_UNSIGNED_BYTE:
    case LOCAL_GL_UNSIGNED_SHORT:
    case LOCAL_GL_UNSIGNED_INT:
        return LOCAL_GL_UNSIGNED_INT;

    default:
        MOZ_CRASH();
    }
}

void
WebGLVertexAttribData::VertexAttribPointer(bool integerFunc, WebGLBuffer* buf,
                                           uint8_t size, GLenum type, bool normalized,
                                           uint32_t stride, uint64_t byteOffset)
{
    mIntegerFunc = integerFunc;
    WebGLBuffer::SetSlot(0, buf, &mBuf);
    mType = type;
    mBaseType = AttribPointerBaseType(integerFunc, type);
    mSize = size;
    mBytesPerVertex = CalcBytesPerVertex(mType, mSize);
    mNormalized = normalized;
    mStride = stride;
    mExplicitStride = (mStride ? mStride : mBytesPerVertex);
    mByteOffset = byteOffset;
}

void
WebGLVertexAttribData::DoVertexAttribPointer(gl::GLContext* gl, GLuint index) const
{
    if (mIntegerFunc) {
        gl->fVertexAttribIPointer(index, mSize, mType, mStride,
                                  (const void*)mByteOffset);
    } else {
        gl->fVertexAttribPointer(index, mSize, mType, mNormalized, mStride,
                                 (const void*)mByteOffset);
    }
}

} // namespace mozilla

Line	Count	Source (jump to first uncovered line)
1		/* -- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2		/* This Source Code Form is subject to the terms of the Mozilla Public
3		* License, v. 2.0. If a copy of the MPL was not distributed with this
4		* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6		#include "WebGLVertexAttribData.h"
7
8		#include "GLContext.h"
9		#include "WebGLBuffer.h"
10
11		namespace mozilla {
12
13		static uint8_t
14		CalcBytesPerVertex(GLenum type, uint8_t size)
15	0	{
16	0	uint8_t bytesPerType;
17	0	switch (type) {
18	0	case LOCAL_GL_INT_2_10_10_10_REV:
19	0	case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
20	0	return 4;
21	0
22	0	case LOCAL_GL_BYTE:
23	0	case LOCAL_GL_UNSIGNED_BYTE:
24	0	bytesPerType = 1;
25	0	break;
26	0
27	0	case LOCAL_GL_HALF_FLOAT:
28	0	case LOCAL_GL_SHORT:
29	0	case LOCAL_GL_UNSIGNED_SHORT:
30	0	bytesPerType = 2;
31	0	break;
32	0
33	0	case LOCAL_GL_FIXED: // GLES 3.0.4 p9: 32-bit signed, with 16 fractional bits.
34	0	case LOCAL_GL_FLOAT:
35	0	case LOCAL_GL_INT:
36	0	case LOCAL_GL_UNSIGNED_INT:
37	0	bytesPerType = 4;
38	0	break;
39	0
40	0	default:
41	0	MOZ_CRASH("Bad `type`.");
42	0	}
43	0
44	0	return bytesPerType * size;
45	0	}
46
47		static GLenum
48		AttribPointerBaseType(bool integerFunc, GLenum type)
49	0	{
50	0	if (!integerFunc)
51	0	return LOCAL_GL_FLOAT;
52	0
53	0	switch (type) {
54	0	case LOCAL_GL_BYTE:
55	0	case LOCAL_GL_SHORT:
56	0	case LOCAL_GL_INT:
57	0	return LOCAL_GL_INT;
58	0
59	0	case LOCAL_GL_UNSIGNED_BYTE:
60	0	case LOCAL_GL_UNSIGNED_SHORT:
61	0	case LOCAL_GL_UNSIGNED_INT:
62	0	return LOCAL_GL_UNSIGNED_INT;
63	0
64	0	default:
65	0	MOZ_CRASH();
66	0	}
67	0	}
68
69		void
70		WebGLVertexAttribData::VertexAttribPointer(bool integerFunc, WebGLBuffer* buf,
71		uint8_t size, GLenum type, bool normalized,
72		uint32_t stride, uint64_t byteOffset)
73	0	{
74	0	mIntegerFunc = integerFunc;
75	0	WebGLBuffer::SetSlot(0, buf, &mBuf);
76	0	mType = type;
77	0	mBaseType = AttribPointerBaseType(integerFunc, type);
78	0	mSize = size;
79	0	mBytesPerVertex = CalcBytesPerVertex(mType, mSize);
80	0	mNormalized = normalized;
81	0	mStride = stride;
82	0	mExplicitStride = (mStride ? mStride : mBytesPerVertex);
83	0	mByteOffset = byteOffset;
84	0	}
85
86		void
87		WebGLVertexAttribData::DoVertexAttribPointer(gl::GLContext* gl, GLuint index) const
88	0	{
89	0	if (mIntegerFunc) {
90	0	gl->fVertexAttribIPointer(index, mSize, mType, mStride,
91	0	(const void*)mByteOffset);
92	0	} else {
93	0	gl->fVertexAttribPointer(index, mSize, mType, mNormalized, mStride,
94	0	(const void*)mByteOffset);
95	0	}
96	0	}
97
98		} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53