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rsx/common/d3d12/gl: Support for fog mode.

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Fix hitman 2
This commit is contained in:
Vincent Lejeune 2016-02-27 18:43:51 +01:00
parent 9cdb74efc7
commit 32434dd848
10 changed files with 138 additions and 9 deletions
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51
rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
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@ -29,6 +29,13 @@ std::string GLFragmentDecompilerThread::compareFunction(COMPARE f, const std::st
void GLFragmentDecompilerThread::insertHeader(std::stringstream & OS)
{
OS << "#version 420" << std::endl;
OS << "layout(std140, binding = 0) uniform ScaleOffsetBuffer\n";
OS << "{\n";
OS << " mat4 scaleOffsetMat;\n";
OS << " float fog_param0;\n";
OS << " float fog_param1;\n";
OS << "};\n";
}
void GLFragmentDecompilerThread::insertIntputs(std::stringstream & OS)
@ -99,6 +106,37 @@ void GLFragmentDecompilerThread::insertConstants(std::stringstream & OS)
OS << "};" << std::endl;
}
namespace
{
// Note: It's not clear whether fog is computed per pixel or per vertex.
// But it makes more sense to compute exp of interpoled value than to interpolate exp values.
void insert_fog_declaration(std::stringstream & OS, rsx::fog_mode mode)
{
switch (mode)
{
case rsx::fog_mode::linear:
OS << " vec4 fogc = fog_param1 * fogc + (fog_param0 - 1.);\n";
return;
case rsx::fog_mode::exponential:
OS << " vec4 fogc = exp(11.084 * (fog_param1 * fogc + fog_param0 - 1.5));\n";
return;
case rsx::fog_mode::exponential2:
OS << " vec4 fogc = exp(-pow(4.709 * (fog_param1 * fogc + fog_param0 - 1.5)), 2.);\n";
return;
case rsx::fog_mode::linear_abs:
OS << " vec4 fogc = fog_param1 * abs(fogc) + (fog_param0 - 1.);\n";
return;
case rsx::fog_mode::exponential_abs:
OS << " vec4 fogc = exp(11.084 * (fog_param1 * abs(fogc) + fog_param0 - 1.5));\n";
return;
case rsx::fog_mode::exponential2_abs:
OS << " vec4 fogc = exp(-pow(4.709 * (fog_param1 * abs(fogc) + fog_param0 - 1.5)), 2.);\n";
return;
}
}
}
void GLFragmentDecompilerThread::insertMainStart(std::stringstream & OS)
{
insert_glsl_legacy_function(OS);
@ -118,6 +156,19 @@ void GLFragmentDecompilerThread::insertMainStart(std::stringstream & OS)
}
OS << " vec4 ssa = gl_FrontFacing ? vec4(1.) : vec4(-1.);\n";
// search if there is fogc in inputs
for (const ParamType& PT : m_parr.params[PF_PARAM_IN])
{
for (const ParamItem& PI : PT.items)
{
if (PI.name == "fogc")
{
insert_fog_declaration(OS, m_prog.fog_equation);
return;
}
}
}
}
void GLFragmentDecompilerThread::insertMainEnd(std::stringstream & OS)