diff --git a/plugins/GSdx/GSRendererOGL.cpp b/plugins/GSdx/GSRendererOGL.cpp index 30fec7630e..91f6b3c8e8 100644 --- a/plugins/GSdx/GSRendererOGL.cpp +++ b/plugins/GSdx/GSRendererOGL.cpp @@ -313,6 +313,128 @@ bool GSRendererOGL::EmulateTextureShuffleAndFbmask(GSDeviceOGL::PSSelector& ps_s return require_barrier; } +bool GSRendererOGL::EmulateBlending(GSDeviceOGL::PSSelector& ps_sel, GSDeviceOGL::OMBlendSelector& om_bsel, GSDeviceOGL::PSConstantBuffer& ps_cb, float afix, bool DATE_GL42) +{ + const GIFRegALPHA& ALPHA = m_context->ALPHA; + bool require_barrier = false; + + om_bsel.abe = PRIM->ABE || PRIM->AA1 && m_vt.m_primclass == GS_LINE_CLASS; + + om_bsel.a = ALPHA.A; + om_bsel.b = ALPHA.B; + om_bsel.c = ALPHA.C; + om_bsel.d = ALPHA.D; + + if (m_env.PABE.PABE) + { +#ifdef ENABLE_OGL_DEBUG + fprintf(stderr, "env PABE not supported\n"); + GL_INS("!!! ENV PABE not supported !!!"); +#endif + // FIXME it could be supported with SW blending! + if (om_bsel.a == 0 && om_bsel.b == 1 && om_bsel.c == 0 && om_bsel.d == 1) + { + // this works because with PABE alpha blending is on when alpha >= 0x80, but since the pixel shader + // cannot output anything over 0x80 (== 1.0) blending with 0x80 or turning it off gives the same result + om_bsel.abe = 0; + } + else + { + //Breath of Fire Dragon Quarter triggers this in battles. Graphics are fine though. + //ASSERT(0); + } + } + + // No blending so early exit + if (!om_bsel.abe) + return require_barrier; + + // Compute the blending equation to detect special case + int blend_sel = ((om_bsel.a * 3 + om_bsel.b) * 3 + om_bsel.c) * 3 + om_bsel.d; + int blend_flag = GSDeviceOGL::m_blendMapD3D9[blend_sel].bogus; + // SW Blend is (nearly) free. Let's use it. + bool free_blend = (blend_flag & NO_BAR) || (m_prim_overlap == PRIM_OVERLAP_NO); + // We really need SW blending for this one, barely used + bool impossible_blend = (blend_flag & A_MAX); + // Do the multiplication in shader for blending accumulation: Cs*As + Cd or Cs*Af + Cd + bool accumulation_blend = (ALPHA.A == 0 && ALPHA.B == 2 && ALPHA.C != 1 && ALPHA.D == 1); + + bool sw_blending_base = m_sw_blending && (free_blend || impossible_blend || ps_sel.blend_accu); + + // Color clip + bool acc_colclip_wrap = false; + if (m_env.COLCLAMP.CLAMP == 0) { + acc_colclip_wrap = (m_sw_blending >= ACC_BLEND_CCLIP || sw_blending_base); + if (acc_colclip_wrap) { + ps_sel.colclip = 3; + GL_INS("COLCLIP SW ENABLED (blending is %d/%d/%d/%d)", ALPHA.A, ALPHA.B, ALPHA.C, ALPHA.D); + } else if (!PRIM->TME && PRIM->PRIM != GS_POINTLIST) { + // Standard (inaccurate) colclip + ps_sel.colclip = 1; + accumulation_blend = false; + GL_INS("COLCLIP ENABLED (blending is %d/%d/%d/%d)", ALPHA.A, ALPHA.B, ALPHA.C, ALPHA.D); + } + } + + // Note: Option is duplicated, one impact the blend unit / the other the shader. + if (accumulation_blend && m_sw_blending) { + om_bsel.accu = ps_sel.blend_accu = 1; + sw_blending_base = true; + } + + bool all_blend_sw; + switch (m_sw_blending) { + case ACC_BLEND_ULTRA: all_blend_sw = true; break; + case ACC_BLEND_FULL: all_blend_sw = !( (ALPHA.A == ALPHA.B) || (ALPHA.C == 2 && afix <= 1.002f) ); break; + case ACC_BLEND_CCLIP: + case ACC_BLEND_SPRITE: all_blend_sw = m_vt.m_primclass == GS_SPRITE_CLASS; break; + default: all_blend_sw = false; break; + } + + bool sw_blending = sw_blending_base // Free case or Impossible blend + || all_blend_sw // all blend + || acc_colclip_wrap // accurate colclip + || ps_sel.fbmask; // accurate fbmask + + + // SW Blending + // GL42 interact very badly with sw blending. GL42 uses the primitiveID to find the primitive + // that write the bad alpha value. Sw blending will force the draw to run primitive by primitive + // (therefore primitiveID will be constant to 1) + sw_blending &= !DATE_GL42; + + // For stat to optimize accurate option +#if 0 + GL_INS("BLEND_INFO: %d/%d/%d/%d. Clamp:%d. Prim:%d number %d (sw %d)", + om_bsel.a, om_bsel.b, om_bsel.c, om_bsel.d, m_env.COLCLAMP.CLAMP, m_vt.m_primclass, m_vertex.next, sw_blending); +#endif + if (sw_blending) { + // select a shader that support blending + om_bsel.ps = 1; + ps_sel.blend_a = om_bsel.a; + ps_sel.blend_b = om_bsel.b; + ps_sel.blend_c = om_bsel.c; + ps_sel.blend_d = om_bsel.d; + + // Require the fix alpha vlaue + if (ALPHA.C == 2) { + ps_cb.AlphaCoeff.a = afix; + } + + // No need to flush for every primitive + require_barrier |= !(blend_flag & NO_BAR) && !ps_sel.blend_accu; + } else { + ps_sel.clr1 = om_bsel.IsCLR1(); + if (ps_sel.dfmt == 1 && ALPHA.C == 1) { + // 24 bits doesn't have an alpha channel so use 1.0f fix factor as equivalent + om_bsel.c = 2; + afix = 1.0f; + } + } + + return require_barrier; +} + GSRendererOGL::PRIM_OVERLAP GSRendererOGL::PrimitiveOverlap() { // Either 1 triangle or 1 line or 3 POINTs @@ -464,120 +586,8 @@ void GSRendererOGL::DrawPrims(GSTexture* rt, GSTexture* ds, GSTextureCache::Sour float afix = (float)m_context->ALPHA.FIX / 0x80; - if (!IsOpaque() && rt) - { - const GIFRegALPHA& ALPHA = m_context->ALPHA; - - om_bsel.abe = PRIM->ABE || PRIM->AA1 && m_vt.m_primclass == GS_LINE_CLASS; - - om_bsel.a = ALPHA.A; - om_bsel.b = ALPHA.B; - om_bsel.c = ALPHA.C; - om_bsel.d = ALPHA.D; - - if (m_env.PABE.PABE) - { - // FIXME it could be supported with SW blending! - if (om_bsel.a == 0 && om_bsel.b == 1 && om_bsel.c == 0 && om_bsel.d == 1) - { - // this works because with PABE alpha blending is on when alpha >= 0x80, but since the pixel shader - // cannot output anything over 0x80 (== 1.0) blending with 0x80 or turning it off gives the same result - om_bsel.abe = 0; - } - else - { - //Breath of Fire Dragon Quarter triggers this in battles. Graphics are fine though. - //ASSERT(0); -#ifdef ENABLE_OGL_DEBUG - fprintf(stderr, "env PABE not supported\n"); - GL_INS("!!! ENV PABE not supported !!!"); -#endif - } - } - - // Compute the blending equation to detect special case - int blend_sel = ((om_bsel.a * 3 + om_bsel.b) * 3 + om_bsel.c) * 3 + om_bsel.d; - int blend_flag = GSDeviceOGL::m_blendMapD3D9[blend_sel].bogus; - // SW Blend is (nearly) free. Let's use it. - bool free_blend = (blend_flag & NO_BAR) || (m_prim_overlap == PRIM_OVERLAP_NO); - // We really need SW blending for this one, barely used - bool impossible_blend = (blend_flag & A_MAX); - // Do the multiplication in shader for blending accumulation: Cs*As + Cd or Cs*Af + Cd - bool accumulation_blend = (ALPHA.A == 0 && ALPHA.B == 2 && ALPHA.C != 1 && ALPHA.D == 1); - - bool sw_blending_base = m_sw_blending && (free_blend || impossible_blend || ps_sel.blend_accu); - - // Color clip - bool acc_colclip_wrap = false; - if (m_env.COLCLAMP.CLAMP == 0) { - acc_colclip_wrap = (m_sw_blending >= ACC_BLEND_CCLIP || sw_blending_base); - if (acc_colclip_wrap) { - ps_sel.colclip = 3; - GL_INS("COLCLIP SW ENABLED (blending is %d/%d/%d/%d)", ALPHA.A, ALPHA.B, ALPHA.C, ALPHA.D); - } else if (!PRIM->TME && PRIM->PRIM != GS_POINTLIST) { - // Standard (inaccurate) colclip - ps_sel.colclip = 1; - accumulation_blend = false; - GL_INS("COLCLIP ENABLED (blending is %d/%d/%d/%d)", ALPHA.A, ALPHA.B, ALPHA.C, ALPHA.D); - } - } - - // Note: Option is duplicated, one impact the blend unit / the other the shader. - if (accumulation_blend && m_sw_blending) { - om_bsel.accu = ps_sel.blend_accu = 1; - sw_blending_base = true; - } - - bool all_blend_sw; - switch (m_sw_blending) { - case ACC_BLEND_ULTRA: all_blend_sw = true; break; - case ACC_BLEND_FULL: all_blend_sw = !( (ALPHA.A == ALPHA.B) || (ALPHA.C == 2 && afix <= 1.002f) ); break; - case ACC_BLEND_CCLIP: - case ACC_BLEND_SPRITE: all_blend_sw = m_vt.m_primclass == GS_SPRITE_CLASS; break; - default: all_blend_sw = false; break; - } - - bool sw_blending = sw_blending_base // Free case or Impossible blend - || all_blend_sw // all blend - || acc_colclip_wrap // accurate colclip - || ps_sel.fbmask; // accurate fbmask - - - // SW Blending - // GL42 interact very badly with sw blending. GL42 uses the primitiveID to find the primitive - // that write the bad alpha value. Sw blending will force the draw to run primitive by primitive - // (therefore primitiveID will be constant to 1) - sw_blending &= !DATE_GL42; - - // For stat to optimize accurate option -#if 0 - if (om_bsel.abe) - GL_INS("BLEND_INFO: %d/%d/%d/%d. Clamp:%d. Prim:%d number %d (sw %d)", - om_bsel.a, om_bsel.b, om_bsel.c, om_bsel.d, m_env.COLCLAMP.CLAMP, m_vt.m_primclass, m_vertex.next, sw_blending); -#endif - if (sw_blending && om_bsel.abe) { - // select a shader that support blending - om_bsel.ps = 1; - ps_sel.blend_a = om_bsel.a; - ps_sel.blend_b = om_bsel.b; - ps_sel.blend_c = om_bsel.c; - ps_sel.blend_d = om_bsel.d; - - // Require the fix alpha vlaue - if (ALPHA.C == 2) { - ps_cb.AlphaCoeff.a = afix; - } - - // No need to flush for every primitive - require_barrier |= !(blend_flag & NO_BAR) && !ps_sel.blend_accu; - } else { - ps_sel.clr1 = om_bsel.IsCLR1(); - if (ps_sel.dfmt == 1 && ALPHA.C == 1) { - // 24 bits doesn't have an alpha channel so use 1.0f fix factor as equivalent - om_bsel.c = 2; - afix = 1.0f; - } - } + if (!IsOpaque() && rt) { + require_barrier |= EmulateBlending(ps_sel, om_bsel, ps_cb, afix, DATE_GL42); } if (ps_sel.dfmt == 1) { diff --git a/plugins/GSdx/GSRendererOGL.h b/plugins/GSdx/GSRendererOGL.h index 66879bdfeb..c8ab0e24ee 100644 --- a/plugins/GSdx/GSRendererOGL.h +++ b/plugins/GSdx/GSRendererOGL.h @@ -60,6 +60,7 @@ class GSRendererOGL : public GSRendererHW void EmulateGS(); void SetupIA(); bool EmulateTextureShuffleAndFbmask(GSDeviceOGL::PSSelector& ps_sel, GSDeviceOGL::OMColorMaskSelector& om_csel, GSDeviceOGL::PSConstantBuffer& ps_cb); + bool EmulateBlending(GSDeviceOGL::PSSelector& ps_sel, GSDeviceOGL::OMBlendSelector& om_bsel, GSDeviceOGL::PSConstantBuffer& ps_cb, float afix, bool DATE_GL42); public: GSRendererOGL();