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51 lines
991 B
C++
51 lines
991 B
C++
#include "RenderState.h"
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#include "Base.h"
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#include "RenderBase.h"
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RenderState::RenderState(GPUState &gpu)
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: gpu(gpu), color(1,1,1), alpha(1), pass(0)
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, forceRenderBorder(false), forceRenderCenter(false), renderBorderAlpha(1)
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{
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}
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struct BlendParams
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{
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GLenum src, dst;
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};
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static const BlendParams s_blendParams[] =
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{
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{ GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
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{ GL_SRC_ALPHA, GL_ONE },
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{ GL_ZERO, GL_SRC_ALPHA },
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{ GL_ZERO, GL_SRC_COLOR },
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};
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GPUState::GPUState()
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: _blendType(BLEND_DISABLED)
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{
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setBlend(BLEND_DEFAULT);
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}
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void GPUState::setBlend(BlendType bt)
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{
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compile_assert(Countof(s_blendParams) == _BLEND_MAXSIZE);
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// FIXME: comment this back in once ALL other occurances of glBlendFunc() have been removed
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//if(_blendType == bt)
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// return;
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_blendType = bt;
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if (unsigned(bt) < _BLEND_MAXSIZE)
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{
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glEnable(GL_BLEND);
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const BlendParams& bp = s_blendParams[bt];
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glBlendFunc(bp.src, bp.dst);
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}
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else
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{
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glDisable(GL_BLEND);
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glDisable(GL_ALPHA_TEST);
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}
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}
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