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OpenGL: refactor all of our StreamBuffers

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The old way was to use big switch/case statements based on a type of buffer.
The new one is to use inheritance.

This change prohibits us to change the buffer type while running, but I doubt we'll ever do so.
Performance should also be a bit better. Also a nice cleanup.

Added some comments about this different kind of buffers.
This commit is contained in:
degasus
2014-01-23 00:47:49 +01:00
parent be1fee6d74
commit 128fcdac26
4 changed files with 373 additions and 256 deletions
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14
Source/Core/VideoBackends/OGL/ProgramShaderCache.cpp
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@ -193,18 +193,18 @@ void ProgramShaderCache::UploadConstants()
{
if(PixelShaderManager::dirty || VertexShaderManager::dirty)
{
u8* buffer = s_buffer->Map(s_ubo_buffer_size, s_ubo_align);
auto buffer = s_buffer->Map(s_ubo_buffer_size, s_ubo_align);
memcpy(buffer,
memcpy(buffer.first,
&PixelShaderManager::constants, sizeof(PixelShaderConstants));
memcpy(buffer + ROUND_UP(sizeof(PixelShaderConstants), s_ubo_align),
memcpy(buffer.first + ROUND_UP(sizeof(PixelShaderConstants), s_ubo_align),
&VertexShaderManager::constants, sizeof(VertexShaderConstants));
size_t offset = s_buffer->Unmap(s_ubo_buffer_size);
glBindBufferRange(GL_UNIFORM_BUFFER, 1, s_buffer->getBuffer(), offset,
s_buffer->Unmap(s_ubo_buffer_size);
glBindBufferRange(GL_UNIFORM_BUFFER, 1, s_buffer->m_buffer, buffer.second,
sizeof(PixelShaderConstants));
glBindBufferRange(GL_UNIFORM_BUFFER, 2, s_buffer->getBuffer(), offset + ROUND_UP(sizeof(PixelShaderConstants), s_ubo_align),
glBindBufferRange(GL_UNIFORM_BUFFER, 2, s_buffer->m_buffer, buffer.second + ROUND_UP(sizeof(PixelShaderConstants), s_ubo_align),
sizeof(VertexShaderConstants));
PixelShaderManager::dirty = false;
@ -471,7 +471,7 @@ void ProgramShaderCache::Init(void)
// We multiply by *4*4 because we need to get down to basic machine units.
// So multiply by four to get how many floats we have from vec4s
// Then once more to get bytes
s_buffer = new StreamBuffer(GL_UNIFORM_BUFFER, UBO_LENGTH);
s_buffer = StreamBuffer::Create(GL_UNIFORM_BUFFER, UBO_LENGTH);
}
// Read our shader cache, only if supported