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Add bgra support to OpenGLSWFrameBuffer

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This commit is contained in:
Magnus Norddahl 2016-10-11 15:43:12 +02:00
commit f37ee3a024
9 changed files with 44 additions and 27 deletions
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43
src/gl/system/gl_swframebuffer.cpp
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@ -120,8 +120,8 @@ const char *const OpenGLSWFrameBuffer::ShaderDefines[OpenGLSWFrameBuffer::NUM_SH
"#define EGAMMACORRECTION", // GammaCorrection
};
OpenGLSWFrameBuffer::OpenGLSWFrameBuffer(void *hMonitor, int width, int height, int bits, int refreshHz, bool fullscreen) :
Super(hMonitor, width, height, bits, refreshHz, fullscreen)
OpenGLSWFrameBuffer::OpenGLSWFrameBuffer(void *hMonitor, int width, int height, int bits, int refreshHz, bool fullscreen, bool bgra) :
Super(hMonitor, width, height, bits, refreshHz, fullscreen, bgra)
{
// To do: this needs to cooperate with the same static in OpenGLFrameBuffer::InitializeState
static bool first = true;
@ -892,7 +892,7 @@ void OpenGLSWFrameBuffer::KillNativeTexs()
bool OpenGLSWFrameBuffer::CreateFBTexture()
{
CreateTexture("FBTexture", Width, Height, 1, GL_R8, &FBTexture);
CreateTexture("FBTexture", Width, Height, 1, IsBgra() ? GL_RGBA8 : GL_R8, &FBTexture);
FBWidth = Width;
FBHeight = Height;
return true;
@ -1262,13 +1262,16 @@ void OpenGLSWFrameBuffer::Draw3DPart(bool copy3d)
{
if (copy3d)
{
int pixelsize = IsBgra() ? 4 : 1;
int size = Width * Height * pixelsize;
if (FBTexture->Buffers[0] == 0)
{
glGenBuffers(2, (GLuint*)FBTexture->Buffers);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, FBTexture->Buffers[0]);
glBufferData(GL_PIXEL_UNPACK_BUFFER, Width * Height, nullptr, GL_STREAM_DRAW);
glBufferData(GL_PIXEL_UNPACK_BUFFER, size, nullptr, GL_STREAM_DRAW);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, FBTexture->Buffers[1]);
glBufferData(GL_PIXEL_UNPACK_BUFFER, Width * Height, nullptr, GL_STREAM_DRAW);
glBufferData(GL_PIXEL_UNPACK_BUFFER, size, nullptr, GL_STREAM_DRAW);
}
else
{
@ -1276,28 +1279,31 @@ void OpenGLSWFrameBuffer::Draw3DPart(bool copy3d)
FBTexture->CurrentBuffer = (FBTexture->CurrentBuffer + 1) & 1;
}
uint8_t *dest = (uint8_t*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, Width * Height, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
uint8_t *dest = (uint8_t*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, size, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_RANGE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
if (dest)
{
if (Pitch == Width)
{
memcpy(dest, MemBuffer, Width * Height);
memcpy(dest, MemBuffer, Width * Height * pixelsize);
}
else
{
uint8_t *src = MemBuffer;
for (int y = 0; y < Height; y++)
{
memcpy(dest, src, Width);
dest += Width;
src += Pitch;
memcpy(dest, src, Width * pixelsize);
dest += Width * pixelsize;
src += Pitch * pixelsize;
}
}
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
GLint oldBinding = 0;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &oldBinding);
glBindTexture(GL_TEXTURE_2D, FBTexture->Texture);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Width, Height, GL_RED, GL_UNSIGNED_BYTE, 0);
if (IsBgra())
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Width, Height, GL_BGRA, GL_UNSIGNED_BYTE, 0);
else
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, Width, Height, GL_RED, GL_UNSIGNED_BYTE, 0);
glBindTexture(GL_TEXTURE_2D, oldBinding);
}
@ -1314,7 +1320,10 @@ void OpenGLSWFrameBuffer::Draw3DPart(bool copy3d)
memset(Constant, 0, sizeof(Constant));
SetAlphaBlend(0);
EnableAlphaTest(false);
SetPixelShader(Shaders[SHADER_NormalColorPal]);
if (IsBgra())
SetPixelShader(Shaders[SHADER_NormalColor]);
else
SetPixelShader(Shaders[SHADER_NormalColorPal]);
if (copy3d)
{
FBVERTEX verts[4];
@ -1330,7 +1339,10 @@ void OpenGLSWFrameBuffer::Draw3DPart(bool copy3d)
{
color0 = ColorValue(realfixedcolormap->ColorizeStart[0] / 2, realfixedcolormap->ColorizeStart[1] / 2, realfixedcolormap->ColorizeStart[2] / 2, 0);
color1 = ColorValue(realfixedcolormap->ColorizeEnd[0] / 2, realfixedcolormap->ColorizeEnd[1] / 2, realfixedcolormap->ColorizeEnd[2] / 2, 1);
SetPixelShader(Shaders[SHADER_SpecialColormapPal]);
if (IsBgra())
SetPixelShader(Shaders[SHADER_SpecialColormap]);
else
SetPixelShader(Shaders[SHADER_SpecialColormapPal]);
}
}
else
@ -1341,7 +1353,10 @@ void OpenGLSWFrameBuffer::Draw3DPart(bool copy3d)
CalcFullscreenCoords(verts, Accel2D, false, color0, color1);
DrawTriangleFans(2, verts);
}
SetPixelShader(Shaders[SHADER_NormalColorPal]);
if (IsBgra())
SetPixelShader(Shaders[SHADER_NormalColor]);
else
SetPixelShader(Shaders[SHADER_NormalColorPal]);
}
//==========================================================================