MGislv/GLideN64
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Emulate VI manipulations with REG.VI_H_START register.

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This emulates horizontal slide effect in Top Gear Overdrive menu.
Fixed issue #17
This commit is contained in:
Sergey Lipskiy 2015-02-18 18:59:20 +06:00
parent 27d4a73590
commit 975b54810f
1 changed files with 9 additions and 2 deletions
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11
FrameBuffer.cpp
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@ -419,12 +419,15 @@ void FrameBufferList::renderBuffer(u32 _address)
OGLVideo & ogl = video();
GLint srcY0, srcY1, dstY0, dstY1;
GLint X0, X1, Xwidth;
GLint srcPartHeight = 0;
GLint dstPartHeight = 0;
const f32 yScale = _FIXED2FLOAT(_SHIFTR(*REG.VI_Y_SCALE, 0, 12), 10);
s32 vEnd = _SHIFTR(*REG.VI_V_START, 0, 10);
s32 vStart = _SHIFTR(*REG.VI_V_START, 16, 10);
const s32 hEnd = _SHIFTR(*REG.VI_H_START, 0, 10);
const s32 hStart = _SHIFTR(*REG.VI_H_START, 16, 10);
const s32 vSync = (*REG.VI_V_SYNC) & 0x03FF;
const bool interlaced = (*REG.VI_STATUS & 0x40) != 0;
const bool isPAL = vSync > 550;
@ -464,6 +467,10 @@ void FrameBufferList::renderBuffer(u32 _address)
srcY1 = srcY0 + VI.real_height;
}
const f32 scaleX = _FIXED2FLOAT(_SHIFTR(*REG.VI_X_SCALE, 0, 12), 10);
X0 = (GLint)(max(0, hStart - (isPAL ? 128 : 108)) * scaleX * ogl.getScaleX());
Xwidth = (GLint)((min(VI.width, (hEnd - hStart)*scaleX)) * ogl.getScaleX());
X1 = X0 + Xwidth;
PostProcessor::get().process(pBuffer);
// glDisable(GL_SCISSOR_TEST) does not affect glBlitFramebuffer, at least on AMD
@ -480,8 +487,8 @@ void FrameBufferList::renderBuffer(u32 _address)
if (!ogl.isFullscreen())
vOffset += ogl.getHeightOffset();
GLint srcCoord[4] = { 0, (GLint)(srcY0*srcScaleY), ogl.getWidth(), (GLint)(srcY1*srcScaleY) };
GLint dstCoord[4] = { hOffset, vOffset + (GLint)(dstY0*dstScaleY), hOffset + ogl.getWidth(), vOffset + (GLint)(dstY1*dstScaleY) };
GLint srcCoord[4] = { X0, (GLint)(srcY0*srcScaleY), X1, (GLint)(srcY1*srcScaleY) };
GLint dstCoord[4] = { X0 + hOffset, vOffset + (GLint)(dstY0*dstScaleY), hOffset + X1, vOffset + (GLint)(dstY1*dstScaleY) };
GLenum filter = GL_LINEAR;
if (config.video.multisampling != 0) {