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OGL: implement bounding box support with ssbo

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This implemention tries to be as accurate as the old SW implemention, but it will remove the dependcy of our vertexloader on videosw.
This commit is contained in:
degasus
2014-11-13 23:26:49 +01:00
parent dced84d440
commit c211450b99
24 changed files with 231 additions and 7 deletions
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48
Source/Core/VideoBackends/OGL/Render.cpp
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@ -20,6 +20,7 @@
#include "Core/Core.h"
#include "Core/Movie.h"
#include "VideoBackends/OGL/BoundingBox.h"
#include "VideoBackends/OGL/FramebufferManager.h"
#include "VideoBackends/OGL/GLInterfaceBase.h"
#include "VideoBackends/OGL/GLUtil.h"
@ -465,6 +466,7 @@ Renderer::Renderer()
g_Config.backend_info.bSupportsPrimitiveRestart = !DriverDetails::HasBug(DriverDetails::BUG_PRIMITIVERESTART) &&
((GLExtensions::Version() >= 310) || GLExtensions::Supports("GL_NV_primitive_restart"));
g_Config.backend_info.bSupportsEarlyZ = GLExtensions::Supports("GL_ARB_shader_image_load_store");
g_Config.backend_info.bSupportsBBox = GLExtensions::Supports("GL_ARB_shader_storage_buffer_object");
// Desktop OpenGL supports the binding layout if it supports 420pack
// OpenGL ES 3.1 supports it implicitly without an extension
@ -1161,6 +1163,52 @@ u32 Renderer::AccessEFB(EFBAccessType type, u32 x, u32 y, u32 poke_data)
return 0;
}
u16 Renderer::BBoxRead(int index)
{
int swapped_index = index;
if (index >= 2)
swapped_index ^= 1; // swap 2 and 3 for top/bottom
// Here we get the min/max value of the truncated position of the upscaled and swapped framebuffer.
// So we have to correct them to the unscaled EFB sizes.
int value = BoundingBox::Get(swapped_index);
if (index < 2)
{
// left/right
value = value * EFB_WIDTH / s_target_width;
}
else
{
// up/down -- we have to swap up and down
value = value * EFB_HEIGHT / s_target_height;
value = EFB_HEIGHT - value - 1;
}
if (index & 1)
value++; // fix max values to describe the outer border
return value;
}
void Renderer::BBoxWrite(int index, u16 _value)
{
int value = _value; // u16 isn't enough to multiply by the efb width
if (index & 1)
value--;
if (index < 2)
{
value = value * s_target_width / EFB_WIDTH;
}
else
{
index ^= 1; // swap 2 and 3 for top/bottom
value = EFB_HEIGHT - value - 1;
value = value * s_target_height / EFB_HEIGHT;
}
BoundingBox::Set(index, value);
}
void Renderer::SetViewport()
{
// reversed gxsetviewport(xorig, yorig, width, height, nearz, farz)