diff options
| author | chai <chaifix@163.com> | 2019-04-06 07:39:49 +0800 |
|---|---|---|
| committer | chai <chaifix@163.com> | 2019-04-06 07:39:49 +0800 |
| commit | e47baca4f23db43ec91fbf64d5d06d7c0dbee495 (patch) | |
| tree | 9e909413bbf61834570e7dbdbe37fc8705f12730 /source/modules/asura-core/graphics/gpu_buffer.cpp | |
| parent | e13616b5c40f912853be99f0603f0e4c97b22062 (diff) | |
*misc
Diffstat (limited to 'source/modules/asura-core/graphics/gpu_buffer.cpp')
| -rw-r--r-- | source/modules/asura-core/graphics/gpu_buffer.cpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/source/modules/asura-core/graphics/gpu_buffer.cpp b/source/modules/asura-core/graphics/gpu_buffer.cpp new file mode 100644 index 0000000..c796bb0 --- /dev/null +++ b/source/modules/asura-core/graphics/gpu_buffer.cpp @@ -0,0 +1,94 @@ +#include "gpu_buffer.h" + +namespace AsuraEngine +{ + namespace Graphics + { + + GPUBuffer::GPUBuffer(BufferType type, BufferUsage usage, size_t size) + : mTarget(GL_ZERO) + , mBuffer(GL_ZERO) + , mSize(0) +#if ASURA_DEBUG + , mData(nullptr) +#endif + { + switch (type) + { + case BUFFER_TYPE_VERTEX: + mTarget = GL_ARRAY_BUFFER; + break; + case BUFFER_TYPE_INDEX: + mTarget = GL_ELEMENT_ARRAY_BUFFER; + break; + } + switch (usage) + { + case BUFFER_USAGE_STREAM: + mUsage = GL_STREAM_DRAW; + break; + case BUFFER_USAGE_DYNAMIC: + mUsage = GL_DYNAMIC_DRAW; + break; + case BUFFER_USAGE_STATIC: + mUsage = GL_STATIC_DRAW; + break; + } + gl.WipeError(); + glGenBuffers(1, &mBuffer); + if (mBuffer == 0) + throw Exception("OpenGL glGenBuffers failed."); + glBindBuffer(mTarget, mBuffer); + glBufferData(mTarget, size, NULL, mUsage); // ��ʼ����СΪsize�Ļ��� + if (gl.HasError()) + throw Exception("OpenGL glBufferData failed. Errorcode=%d.", gl.GetError()); + glBindBuffer(mTarget, 0); +#if ASURA_DEBUG + mData = (byte*)malloc(size); + memset(mData, 0, size); +#endif + mSize = size; + } + + GPUBuffer::~GPUBuffer() + { +#if ASURA_DEBUG + if (mData) + free(mData); +#endif + glDeleteBuffers(1, &mBuffer); + } + + bool GPUBuffer::Fill(const void * data, size_t size, uint offset) + { + if (data == nullptr) + return false; + glBindBuffer(mTarget, mBuffer); + glBufferSubData(mTarget, offset, size, data); + if (gl.HasError()) + throw Exception("OpenGL glBufferSubData failed. Errorcode=%d.", gl.GetError()); + glBindBuffer(mTarget, 0); +#if ASURA_DEBUG + // ����һ�ݣ������� + memcpy(mData + offset, data, size); +#endif + return true; + } + + void GPUBuffer::Bind() + { + glBindBuffer(mTarget, mBuffer); + } + + void GPUBuffer::UnBind() + { + glBindBuffer(mTarget, 0); + } + + uint GPUBuffer::GetBufferSize() + { + return mSize; + } + + } +}
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