r_sphere.cpp File Reference

Functions to generate and render spheres. More...

#include "r_local.h"
#include "r_sphere.h"
#include "r_error.h"
#include "r_geoscape.h"

Go to the source code of this file.

Functions
static float	rhoSpiral (const int index, const float deltaRho, const float thetaAngle)
void	R_SphereGenerate (sphere_t *sphere, const int tris, const float radius)
	Initialize the globe chain arrays. More...
void	R_SphereInit (void)
	Creates the spheres we need for rendering the 3d globe. More...
static void	R_SphereActivateTextureUnit (gltexunit_t *texunit, void *texCoordBuffer)
static void	R_SphereDeactivateTextureUnit (gltexunit_t *texunit)
static void	R_SphereRenderTris (const sphere_t *sphere)
static bool	R_SphereCheckGLSL (const sphere_t *sphere)
static void	R_SphereShade (const sphere_t *sphere)
	render sphere using standard OpenGL lighting More...
static void	R_SphereShadeGLSL (const sphere_t *sphere)
	render sphere using GLSL (bump mapping, specularity, and season-blending) More...
void	R_SphereRender (const sphere_t *sphere, const vec3_t pos, const vec3_t rotate, const float scale, const vec4_t lightPos)
	Draw the sphere. More...

Variables
static cvar_t *	r_sphereDetails
sphere_t	r_globeEarth
sphere_t	r_globeMoon
sphere_t	r_globeEarthAtmosphere

Detailed Description

Functions to generate and render spheres.

Definition in file r_sphere.cpp.

Function Documentation

static void R_SphereActivateTextureUnit ( gltexunit_t *  texunit, void *  texCoordBuffer  )

inlinestatic

Definition at line 131 of file r_sphere.cpp.

References R_BindArray(), and R_SelectTexture().

Referenced by R_SphereShadeGLSL().

static bool R_SphereCheckGLSL ( const sphere_t *  sphere )

inlinestatic

Parameters

sphere

The sphere to check

Returns

true if all needed data is loaded to use the geoscape glsl shaders, false otherwise

Definition at line 162 of file r_sphere.cpp.

References sphere_s::glslProgram, cvar_s::integer, and r_programs.

Referenced by R_SphereRender().

static void R_SphereDeactivateTextureUnit ( gltexunit_t *  texunit )

inlinestatic

Definition at line 138 of file r_sphere.cpp.

References R_BindDefaultArray(), and R_SelectTexture().

Referenced by R_SphereShadeGLSL().

void R_SphereGenerate	(	sphere_t *	sphere,
		const int	tris,
		const float	radius
	)

Initialize the globe chain arrays.

Parameters

[out]	sphere	The sphere you want to create
[in]	tris	The amount of tris the globe should have - the higher the number the higher the details. tris*tris triangles are obtained.
[in]	radius	The radius of the sphere

See also

R_Draw3DGlobe

< angle from the pole (z-axis)

< angle around the equator, from y-axis

Definition at line 51 of file r_sphere.cpp.

References sphere_s::glslProgram, i, M_PI, Mem_PoolAllocTypeN, sphere_s::normals, sphere_s::num_tris, rhoSpiral(), sphere_s::texes, Vector2Set, VectorNormalize2(), VectorSet, sphere_s::verts, and vid_genericPool.

Referenced by R_SphereInit().

void R_SphereInit

(

void

)

Creates the spheres we need for rendering the 3d globe.

Note

The moon sphere has less detail because it's smaller in the scene

The sizes are arbitrary, becasue we use orthographic projection. The real sizes are: lunarRadius = 0.273 * earthRadius, solarRadius = 110.0 * earthRadius

See also

R_Init

Definition at line 119 of file r_sphere.cpp.

References CVAR_ARCHIVE, Cvar_Get(), Cvar_SetValue(), EARTH_RADIUS, cvar_s::integer, MOON_RADIUS, R_SphereGenerate(), and cvar_s::value.

Referenced by R_Init().

void R_SphereRender	(	const sphere_t *	sphere,
		const vec3_t	pos,
		const vec3_t	rotate,
		const float	scale,
		const vec4_t	lightPos
	)

Draw the sphere.

Parameters

[in]	sphere	The sphere that should be rendered
[in]	pos	The position (translation) of the matrix
[in]	rotate	The rotation of the matrix
[in]	scale	The scale of the matrix
[in]	lightPos	Set this to nullptr if you don't want to change the light position

Definition at line 247 of file r_sphere.cpp.

References rendererData_t::aliasCount, sphere_s::num_tris, sphere_s::overlay, PITCH, R_BindDefaultArray(), R_CheckError, R_SphereCheckGLSL(), R_SphereShade(), R_SphereShadeGLSL(), refdef, ROLL, viddef_t::rx, viddef_t::ry, VectorNotEmpty, viddef, and YAW.

Referenced by R_Draw3DGlobe().

static void R_SphereRenderTris ( const sphere_t *  sphere )

static

Definition at line 145 of file r_sphere.cpp.

References rendererData_t::batchCount, sphere_s::num_tris, and refdef.

Referenced by R_SphereShade(), and R_SphereShadeGLSL().

static void R_SphereShade ( const sphere_t *  sphere )

static

render sphere using standard OpenGL lighting

Definition at line 170 of file r_sphere.cpp.

References sphere_s::normals, sphere_s::overlay, sphere_s::overlayAlphaMask, R_BindArray(), R_BindLightmapTexture(), R_BindTexture, R_EnableTexture(), R_SelectTexture(), R_SphereRenderTris(), sphere_s::texes, image_s::texnum, sphere_s::texture, texunit_lightmap, and sphere_s::verts.

Referenced by R_SphereRender().

static void R_SphereShadeGLSL ( const sphere_t *  sphere )

static

render sphere using GLSL (bump mapping, specularity, and season-blending)

Definition at line 201 of file r_sphere.cpp.

References sphere_s::blendScale, sphere_s::blendTexture, sphere_s::glowScale, sphere_s::glslProgram, sphere_s::nightLightPos, sphere_s::normalMap, sphere_s::normals, R_BindArray(), R_BindTexture, R_BindTextureForTexUnit(), R_EnableLighting(), R_ProgramParameter1f(), R_SelectTexture(), R_SphereActivateTextureUnit(), R_SphereDeactivateTextureUnit(), R_SphereRenderTris(), sphere_s::texes, image_s::texnum, sphere_s::texture, texunit_1, texunit_2, texunit_diffuse, Vector4NotEmpty, and sphere_s::verts.

Referenced by R_SphereRender().

static float rhoSpiral ( const int  index, const float  deltaRho, const float  thetaAngle  )

inlinestatic

Definition at line 37 of file r_sphere.cpp.

References f, and M_PI.

Referenced by R_SphereGenerate().

Variable Documentation

sphere_t r_globeEarth

Definition at line 33 of file r_sphere.cpp.

Referenced by R_Draw3DGlobe().

sphere_t r_globeEarthAtmosphere

Definition at line 35 of file r_sphere.cpp.

Referenced by R_Draw3DGlobe().

sphere_t r_globeMoon

Definition at line 34 of file r_sphere.cpp.

Referenced by R_Draw3DGlobe().

cvar_t* r_sphereDetails

static

Definition at line 31 of file r_sphere.cpp.