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- moved the matrix math for the sky dome into backend independent code.

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This commit is contained in:
Christoph Oelckers 2018-06-18 18:18:28 +02:00
parent bac435333b
commit 34ee04f2ce
5 changed files with 65 additions and 51 deletions
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49
src/gl/scene/gl_skydome.cpp
View file

@ -38,7 +38,6 @@
#include "gl/shaders/gl_shader.h"
EXTERN_CVAR(Float, skyoffset)
//-----------------------------------------------------------------------------
//
//
@ -118,57 +117,13 @@ void FSkyVertexBuffer::RenderDome(FMaterial *tex, int mode)
void RenderDome(FMaterial * tex, float x_offset, float y_offset, bool mirror, int mode)
{
int texh = 0;
int texw = 0;
// 57 world units roughly represent one sky texel for the glTranslate call.
const float skyoffsetfactor = 57;
if (tex)
{
gl_RenderState.SetMaterial(tex, CLAMP_NONE, 0, -1, false);
texw = tex->TextureWidth();
texh = tex->TextureHeight();
gl_RenderState.EnableModelMatrix(true);
gl_RenderState.mModelMatrix.loadIdentity();
gl_RenderState.mModelMatrix.rotate(-180.0f + x_offset, 0.f, 1.f, 0.f);
float xscale = texw < 1024.f ? floor(1024.f / float(texw)) : 1.f;
float yscale = 1.f;
if (texh <= 128 && (level.flags & LEVEL_FORCETILEDSKY))
{
gl_RenderState.mModelMatrix.translate(0.f, (-40 + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
gl_RenderState.mModelMatrix.scale(1.f, 1.2f * 1.17f, 1.f);
yscale = 240.f / texh;
}
else if (texh < 128)
{
// smaller sky textures must be tiled. We restrict it to 128 sky pixels, though
gl_RenderState.mModelMatrix.translate(0.f, -1250.f, 0.f);
gl_RenderState.mModelMatrix.scale(1.f, 128 / 230.f, 1.f);
yscale = 128 / texh; // intentionally left as integer.
}
else if (texh < 200)
{
gl_RenderState.mModelMatrix.translate(0.f, -1250.f, 0.f);
gl_RenderState.mModelMatrix.scale(1.f, texh / 230.f, 1.f);
}
else if (texh <= 240)
{
gl_RenderState.mModelMatrix.translate(0.f, (200 - texh + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
gl_RenderState.mModelMatrix.scale(1.f, 1.f + ((texh - 200.f) / 200.f) * 1.17f, 1.f);
}
else
{
gl_RenderState.mModelMatrix.translate(0.f, (-40 + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
gl_RenderState.mModelMatrix.scale(1.f, 1.2f * 1.17f, 1.f);
yscale = 240.f / texh;
}
gl_RenderState.EnableTextureMatrix(true);
gl_RenderState.mTextureMatrix.loadIdentity();
gl_RenderState.mTextureMatrix.scale(mirror ? -xscale : xscale, yscale, 1.f);
gl_RenderState.mTextureMatrix.translate(1.f, y_offset / texh, 1.f);
GLRenderer->mSkyVBO->SetupMatrices(tex, x_offset, y_offset, mirror, mode, gl_RenderState.mModelMatrix, gl_RenderState.mTextureMatrix);
}
GLRenderer->mSkyVBO->RenderDome(tex, mode);

52
src/hwrenderer/scene/hw_skydome.cpp
View file

@ -59,7 +59,10 @@
#include "r_state.h"
#include "r_utility.h"
#include "g_levellocals.h"
#include "r_sky.h"
#include "textures/skyboxtexture.h"
#include "hwrenderer/textures/hw_material.h"
#include "hw_skydome.h"
//-----------------------------------------------------------------------------
@ -68,6 +71,7 @@
// also shamelessly lifted from ZDoomGL! ;)
//
//-----------------------------------------------------------------------------
EXTERN_CVAR(Float, skyoffset)
//-----------------------------------------------------------------------------
//
@ -258,4 +262,52 @@ void FSkyDomeCreator::CreateDome()
ptr[37].SetXYZ(-128.f, 128.f, 128.f, 1, 0);
}
//-----------------------------------------------------------------------------
//
//
//
//-----------------------------------------------------------------------------
void FSkyDomeCreator::SetupMatrices(FMaterial *tex, float x_offset, float y_offset, bool mirror, int mode, VSMatrix &modelMatrix, VSMatrix &textureMatrix)
{
int texw = tex->TextureWidth();
int texh = tex->TextureHeight();
modelMatrix.loadIdentity();
modelMatrix.rotate(-180.0f + x_offset, 0.f, 1.f, 0.f);
float xscale = texw < 1024.f ? floor(1024.f / float(texw)) : 1.f;
float yscale = 1.f;
if (texh <= 128 && (level.flags & LEVEL_FORCETILEDSKY))
{
modelMatrix.translate(0.f, (-40 + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
modelMatrix.scale(1.f, 1.2f * 1.17f, 1.f);
yscale = 240.f / texh;
}
else if (texh < 128)
{
// smaller sky textures must be tiled. We restrict it to 128 sky pixels, though
modelMatrix.translate(0.f, -1250.f, 0.f);
modelMatrix.scale(1.f, 128 / 230.f, 1.f);
yscale = 128 / texh; // intentionally left as integer.
}
else if (texh < 200)
{
modelMatrix.translate(0.f, -1250.f, 0.f);
modelMatrix.scale(1.f, texh / 230.f, 1.f);
}
else if (texh <= 240)
{
modelMatrix.translate(0.f, (200 - texh + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
modelMatrix.scale(1.f, 1.f + ((texh - 200.f) / 200.f) * 1.17f, 1.f);
}
else
{
modelMatrix.translate(0.f, (-40 + tex->tex->SkyOffset + skyoffset)*skyoffsetfactor, 0.f);
modelMatrix.scale(1.f, 1.2f * 1.17f, 1.f);
yscale = 240.f / texh;
}
textureMatrix.loadIdentity();
textureMatrix.scale(mirror ? -xscale : xscale, yscale, 1.f);
textureMatrix.translate(1.f, y_offset / texh, 1.f);
}

5
src/hwrenderer/scene/hw_skydome.h
View file

@ -1,6 +1,9 @@
#pragma once
#include "v_palette.h"
#include "r_data/matrix.h"
class FMaterial;
struct FSkyVertex
{
@ -60,7 +63,7 @@ public:
FSkyDomeCreator();
virtual ~FSkyDomeCreator();
void RenderDome(FMaterial *tex, int mode);
void SetupMatrices(FMaterial *tex, float x_offset, float y_offset, bool mirror, int mode, VSMatrix &modelmatrix, VSMatrix &textureMatrix);
int FaceStart(int i)
{

3
src/polyrenderer/scene/poly_sky.cpp
View file

@ -219,9 +219,6 @@ Mat4f PolySkyDome::GLSkyMath()
int texh = 0;
int texw = 0;
// 57 world units roughly represent one sky texel for the glTranslate call.
const float skyoffsetfactor = 57;
Mat4f modelMatrix = Mat4f::Identity();
if (tex)
{

7
src/r_sky.h
View file

@ -47,4 +47,11 @@ extern int freelookviewheight;
void R_InitSkyMap ();
void R_UpdateSky (uint64_t mstime);
// 57 world units roughly represent one sky texel for the glTranslate call.
enum
{
skyoffsetfactor = 57
};
#endif //__R_SKY_H__