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gsdx ogl: reimplement merge circuit to support feedback write

This commit is contained in:
Gregory Hainaut 2016-10-09 17:01:21 +02:00
parent 06055add5c
commit deb2ed3d09
1 changed files with 43 additions and 10 deletions
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51
plugins/GSdx/GSDeviceOGL.cpp
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@ -1393,25 +1393,58 @@ void GSDeviceOGL::DoMerge(GSTexture* sTex[3], GSVector4* sRect, GSTexture* dTex,
{
GL_PUSH("DoMerge");
bool slbg = PMODE.SLBG;
bool mmod = PMODE.MMOD;
GSVector4 full_r(0.0f, 0.0f, 1.0f, 1.0f);
bool feedback_write_2 = PMODE.EN2 && sTex[2] != nullptr && EXTBUF.FBIN == 1;
bool feedback_write_1 = PMODE.EN1 && sTex[2] != nullptr && EXTBUF.FBIN == 0;
bool feedback_write_2_but_blend_bg = feedback_write_2 && PMODE.SLBG == 1;
// Merge the 2 source textures (sTex[0],sTex[1]). Final results go to dTex. Feedback write will go to sTex[2].
// If either 2nd output is disabled or SLBG is 1, a background color will be used.
// Note: background color is also used when outside of the unit rectangle area
OMSetColorMaskState();
ClearRenderTarget(dTex, c);
if(sTex[1] && !slbg)
{
StretchRect(sTex[1], sRect[1], dTex, dRect[1], m_merge_obj.ps[0]);
// Upload constant to select YUV algo
if (feedback_write_2 || feedback_write_1) {
// Write result to feedback loop
m_misc_cb_cache.EMOD_AC.x = EXTBUF.EMODA;
m_misc_cb_cache.EMOD_AC.y = EXTBUF.EMODC;
m_convert.cb->cache_upload(&m_misc_cb_cache);
}
if(sTex[0])
{
if (sTex[1] && (PMODE.SLBG == 0 || feedback_write_2_but_blend_bg)) {
// 2nd output is enabled and selected. Copy it to destination so we can blend it with 1st output
// Note: value outside of dRect must contains the background color (c)
StretchRect(sTex[1], sRect[1], dTex, dRect[1], ShaderConvert_COPY);
}
// Save 2nd output
if (feedback_write_2) // FIXME I'm not sure dRect[1] is always correct
StretchRect(dTex, full_r, sTex[2], dRect[1], ShaderConvert_YUV);
// Restore background color to process the normal merge
if (feedback_write_2_but_blend_bg)
ClearRenderTarget(dTex, c);
if (sTex[0]) {
if (PMODE.AMOD == 1) // Keep the alpha from the 2nd output
OMSetColorMaskState(OMColorMaskSelector(0x7));
// 1st output is enabled. It must be blended
if (PMODE.MMOD == 1) {
// Blend with a constant alpha
m_merge_obj.cb->cache_upload(&c.v);
StretchRect(sTex[0], sRect[0], dTex, dRect[0], m_merge_obj.ps[mmod ? 1 : 0], m_MERGE_BLEND);
StretchRect(sTex[0], sRect[0], dTex, dRect[0], m_merge_obj.ps[1], m_MERGE_BLEND);
} else {
// Blend with 2 * input alpha
StretchRect(sTex[0], sRect[0], dTex, dRect[0], m_merge_obj.ps[0], m_MERGE_BLEND);
}
}
if (feedback_write_1) // FIXME I'm not sure dRect[0] is always correct
StretchRect(dTex, full_r, sTex[2], dRect[0], ShaderConvert_YUV);
}
void GSDeviceOGL::DoInterlace(GSTexture* sTex, GSTexture* dTex, int shader, bool linear, float yoffset)
{
GL_PUSH("DoInterlace");