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rssx" Halfplement alpha-to-coverage AA transparency

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This commit is contained in:
kd-11 2018-03-07 23:09:38 +03:00
parent 2dce55d036
commit f00d9a7c7f
3 changed files with 84 additions and 21 deletions
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38
rpcs3/Emu/RSX/GL/GLGSRender.cpp
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@ -1187,7 +1187,7 @@ void GLGSRender::update_draw_state()
}
}
const bool mrt_blend_enabled[] =
bool mrt_blend_enabled[] =
{
rsx::method_registers.blend_enabled(),
rsx::method_registers.blend_enabled_surface_1(),
@ -1195,18 +1195,38 @@ void GLGSRender::update_draw_state()
rsx::method_registers.blend_enabled_surface_3()
};
bool blend_equation_override = false;
if (rsx::method_registers.msaa_alpha_to_coverage_enabled() &&
!rsx::method_registers.alpha_test_enabled())
{
if (rsx::method_registers.msaa_enabled() &&
rsx::method_registers.msaa_sample_mask() &&
rsx::method_registers.surface_antialias() != rsx::surface_antialiasing::center_1_sample)
{
//fake alpha-to-coverage
//blend used in conjunction with alpha test to fake order-independent edge transparency
mrt_blend_enabled[0] = mrt_blend_enabled[1] = mrt_blend_enabled[2] = mrt_blend_enabled[3] = true;
blend_equation_override = true;
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBlendEquation(GL_FUNC_ADD);
}
}
if (mrt_blend_enabled[0] || mrt_blend_enabled[1] || mrt_blend_enabled[2] || mrt_blend_enabled[3])
{
glBlendFuncSeparate(blend_factor(rsx::method_registers.blend_func_sfactor_rgb()),
blend_factor(rsx::method_registers.blend_func_dfactor_rgb()),
blend_factor(rsx::method_registers.blend_func_sfactor_a()),
blend_factor(rsx::method_registers.blend_func_dfactor_a()));
if (!blend_equation_override)
{
glBlendFuncSeparate(blend_factor(rsx::method_registers.blend_func_sfactor_rgb()),
blend_factor(rsx::method_registers.blend_func_dfactor_rgb()),
blend_factor(rsx::method_registers.blend_func_sfactor_a()),
blend_factor(rsx::method_registers.blend_func_dfactor_a()));
auto blend_colors = rsx::get_constant_blend_colors();
glBlendColor(blend_colors[0], blend_colors[1], blend_colors[2], blend_colors[3]);
auto blend_colors = rsx::get_constant_blend_colors();
glBlendColor(blend_colors[0], blend_colors[1], blend_colors[2], blend_colors[3]);
glBlendEquationSeparate(blend_equation(rsx::method_registers.blend_equation_rgb()),
blend_equation(rsx::method_registers.blend_equation_a()));
glBlendEquationSeparate(blend_equation(rsx::method_registers.blend_equation_rgb()),
blend_equation(rsx::method_registers.blend_equation_a()));
}
}
gl_state.enablei(mrt_blend_enabled[0], GL_BLEND, 0);