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rsx: Fix clip space computations

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kd-11 2017-06-14 18:47:01 +03:00
parent 75964c686f
commit 98cf72e0fb
6 changed files with 20 additions and 20 deletions
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16
rpcs3/Emu/RSX/RSXThread.cpp
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@ -506,7 +506,7 @@ namespace rsx
return "rsx::thread";
}
void thread::fill_scale_offset_data(void *buffer, bool flip_y, bool symmetrical_z) const
void thread::fill_scale_offset_data(void *buffer, bool flip_y) const
{
int clip_w = rsx::method_registers.surface_clip_width();
int clip_h = rsx::method_registers.surface_clip_height();
@ -523,20 +523,6 @@ namespace rsx
float scale_z = rsx::method_registers.viewport_scale_z();
float offset_z = rsx::method_registers.viewport_offset_z();
if (symmetrical_z)
{
//Since our clip_space is symetrical [-1, 1] we map it to linear space using the eqn:
//ln = (clip * 2) - 1 to fully utilize the 0-1 range of the depth buffer
//RSX matrices passed already map to the [0, 1] range but mapping to classic OGL
//Requires that we undo this step
//This can be made unnecessary using the call glClipControl(GL_LOWER_LEFT, GL_ZERO_TO_ONE).
//However, ClipControl only made it to opengl core in ver 4.5 though, so this is a workaround.
offset_z -= 1.f;
scale_z *= 2.f;
}
float one = 1.f;
stream_vector(buffer, (u32&)scale_x, 0, 0, (u32&)offset_x);