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Added noise overlay (for marine image enhancer).

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This commit is contained in:
Steven Fuller 2001-08-12 19:48:15 +00:00 • committed by Patryk Obara
parent b6076c656e
commit 3ec3df2e66
5 changed files with 100 additions and 57 deletions
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64
src/opengl.c
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@ -27,6 +27,7 @@ extern VIEWDESCRIPTORBLOCK *Global_VDB_Ptr;
extern unsigned char GammaValues[256];
extern SCREENDESCRIPTORBLOCK ScreenDescriptorBlock;
extern int SpecialFXImageNumber;
extern int StaticImageNumber;
static D3DTexture *CurrTextureHandle;
@ -603,6 +604,69 @@ void D3D_PredatorThermalVisionPolygon_Output(POLYHEADER *inputPolyPtr, RENDERVER
glEnd();
}
void DrawNoiseOverlay(int tr)
{
GLfloat x[4], y[4], s[4], t[4], u, v;
int r, g, b;
D3DTexture *tex;
int size;
r = 255;
g = 255;
b = 255;
size = 256;
tex = ImageHeaderArray[StaticImageNumber].D3DTexture;
CheckTranslucencyModeIsCorrect(TRANSLUCENCY_GLOWING);
// CheckFilteringModeIsCorrect(FILTERING_BILINEAR_ON);
CheckBoundTextureIsCorrect(tex->id);
// CheckDepthFuncIsCorrect(GL_ALWAYS);
glDepthFunc(GL_ALWAYS);
u = FastRandom()&255;
v = FastRandom()&255;
x[0] = -1.0f;
y[0] = -1.0f;
s[0] = u / 256.0f;
t[0] = v / 256.0f;
x[1] = 1.0f;
y[1] = -1.0f;
s[1] = (u + size) / 256.0f;
t[1] = v / 256.0f;
x[2] = 1.0f;
y[2] = 1.0f;
s[2] = (u + size) / 256.0f;
t[2] = (v + size) / 256.0f;
x[3] = -1.0f;
y[3] = 1.0f;
s[3] = u / 256.0f;
t[3] = (v + size) / 256.0f;
SelectPolygonBeginType(3); /* triangles */
glColor4ub(r, g, b, tr);
glTexCoord2f(s[0], t[0]);
glVertex3f(x[0], y[0], 1.0f);
glTexCoord2f(s[1], t[1]);
glVertex3f(x[1], y[1], 1.0f);
glTexCoord2f(s[3], t[3]);
glVertex3f(x[3], y[3], 1.0f);
glTexCoord2f(s[1], t[1]);
glVertex3f(x[1], y[1], 1.0f);
glTexCoord2f(s[2], t[2]);
glVertex3f(x[2], y[2], 1.0f);
glTexCoord2f(s[3], t[3]);
glVertex3f(x[3], y[3], 1.0f);
glEnd();
glDepthFunc(GL_LEQUAL);
}
void D3D_PredatorScreenInversionOverlay()
{
CheckTranslucencyModeIsCorrect(TRANSLUCENCY_DARKENINGCOLOUR);