spacecruft
/
celestia
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Another cleanup session in render.cpp 

... those things were used in old render paths only
pull/691/head
Hleb Valoshka 2020-04-08 18:37:31 +03:00
parent 25c4b50ddf
commit 40d77e41af
1 changed files with 0 additions and 136 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

136
src/celengine/render.cpp
View File

@ -164,8 +164,6 @@ static bool commonDataInitialized = false;
LODSphereMesh* g_lodSphere = nullptr;
static Texture* starTex = nullptr;
static Texture* glareTex = nullptr;
static Texture* gaussianDiscTex = nullptr;
static Texture* gaussianGlareTex = nullptr;
@ -393,132 +391,6 @@ Renderer::DetailOptions::DetailOptions() :
}
static void StarTextureEval(float u, float v, float /*unused*/,
unsigned char *pixel)
{
float r = 1 - (float) sqrt(u * u + v * v);
if (r < 0)
r = 0;
else if (r < 0.5f)
r = 2.0f * r;
else
r = 1;
auto pixVal = (int) (r * 255.99f);
pixel[0] = pixVal;
pixel[1] = pixVal;
pixel[2] = pixVal;
}
static void GlareTextureEval(float u, float v, float /*unused*/,
unsigned char *pixel)
{
float r = 0.9f - (float) sqrt(u * u + v * v);
if (r < 0)
r = 0;
auto pixVal = (int) (r * 255.99f);
pixel[0] = 65;
pixel[1] = 64;
pixel[2] = 65;
pixel[3] = pixVal;
}
static void ShadowTextureEval(float u, float v, float /*unused*/,
unsigned char *pixel)
{
auto r = (float) sqrt(u * u + v * v);
// Leave some white pixels around the edges to the shadow doesn't
// 'leak'. We'll also set the maximum mip map level for this texture to 3
// so we don't have problems with the edge texels at high mip map levels.
int pixVal = r < 15.0f / 16.0f ? 0 : 255;
pixel[0] = pixVal;
pixel[1] = pixVal;
pixel[2] = pixVal;
}
//! Lookup function for eclipse penumbras--the input is the amount of overlap
// between the occluder and sun disc, and the output is the fraction of
// full brightness.
static void PenumbraFunctionEval(float u, float /*unused*/, float /*unused*/,
unsigned char *pixel)
{
u = (u + 1.0f) * 0.5f;
// Using the cube root produces a good visual result
auto pixVal = (unsigned char) (::pow((double) u, 0.33) * 255.99);
pixel[0] = pixVal;
}
// ShadowTextureFunction is a function object for creating shadow textures
// used for rendering eclipses.
class ShadowTextureFunction : public TexelFunctionObject
{
public:
ShadowTextureFunction(float _umbra) : umbra(_umbra) {};
void operator()(float u, float v, float w, unsigned char* pixel) override;
float umbra;
};
void ShadowTextureFunction::operator()(float u, float v, float /*w*/,
unsigned char* pixel)
{
auto r = (float) sqrt(u * u + v * v);
int pixVal = 255;
// Leave some white pixels around the edges to the shadow doesn't
// 'leak'. We'll also set the maximum mip map level for this texture to 3
// so we don't have problems with the edge texels at high mip map levels.
r = r / (15.0f / 16.0f);
if (r < 1)
{
// The pixel value should depend on the area of the sun which is
// occluded. We just fudge it here and use the square root of the
// radius.
if (r <= umbra)
pixVal = 0;
else
pixVal = (int) (sqrt((r - umbra) / (1 - umbra)) * 255.99f);
}
pixel[0] = pixVal;
pixel[1] = pixVal;
pixel[2] = pixVal;
};
class ShadowMaskTextureFunction : public TexelFunctionObject
{
public:
ShadowMaskTextureFunction() = default;
void operator()(float u, float v, float w, unsigned char* pixel) override;
float dummy;
};
void ShadowMaskTextureFunction::operator()(float u, float /*v*/, float /*w*/,
unsigned char* pixel)
{
unsigned char a = u > 0.0f ? 255 : 0;
pixel[0] = a;
pixel[1] = a;
pixel[2] = a;
pixel[3] = a;
}
static void IllumMapEval(float x, float y, float z,
unsigned char* pixel)
{
pixel[0] = 128 + (int) (127 * x);
pixel[1] = 128 + (int) (127 * y);
pixel[2] = 128 + (int) (127 * z);
}
#if 0
// Not used yet.
@ -760,12 +632,6 @@ bool Renderer::init(
{
g_lodSphere = new LODSphereMesh();
starTex = CreateProceduralTexture(64, 64, GL_RGB, StarTextureEval);
glareTex = LoadTextureFromFile("textures/flare.jpg");
if (glareTex == nullptr)
glareTex = CreateProceduralTexture(64, 64, GL_RGB, GlareTextureEval);
gaussianDiscTex = BuildGaussianDiscTexture(8);
gaussianGlareTex = BuildGaussianGlareTexture(9);
@ -1879,8 +1745,6 @@ void Renderer::draw(const Observer& observer,
if ((labelMode & BodyLabelMask) != 0)
buildLabelLists(xfrustum, now);
starTex->bind();
}
setupSecondaryLightSources(secondaryIlluminators, lightSourceList);