r_sphere.c File Reference

Functions to generate and render spheres. More...

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

Include dependency graph for r_sphere.c:

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.
void	R_SphereInit (void)
	Creates the spheres we need for rendering the 3d globe.
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 qboolean	R_SphereCheckGLSL (const sphere_t *sphere)
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.
void	R_SphereShade (const sphere_t *sphere)
	render sphere using standard OpenGL lighting
void	R_SphereShadeGLSL (const sphere_t *sphere)
	render sphere using GLSL (bump mapping, specularity, and season-blending)
Variables
static cvar_t *	r_sphereDetails
sphere_t	r_globeEarth
sphere_t	r_globeMoon
sphere_t	r_globeEarthAtmosphere

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Detailed Description

Functions to generate and render spheres.

Definition in file r_sphere.c.

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Function Documentation

static void R_SphereActivateTextureUnit	(	gltexunit_t *	texunit,
		void *	texCoordBuffer
	)			[inline, static]

Definition at line 132 of file r_sphere.c.

References R_BindArray(), and R_SelectTexture().

Referenced by R_SphereShadeGLSL().

static qboolean R_SphereCheckGLSL

(

const sphere_t *

sphere

)

[inline, static]

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 161 of file r_sphere.c.

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

Referenced by R_SphereRender().

static void R_SphereDeactivateTextureUnit

(

gltexunit_t *

texunit

)

[inline, static]

Definition at line 139 of file r_sphere.c.

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 50 of file r_sphere.c.

References sphere_s::glslProgram, i, Mem_PoolAlloc, sphere_s::normals, sphere_s::num_tris, rhoSpiral(), st, 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 120 of file r_sphere.c.

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 NULL if you don't want to change the light position

Definition at line 174 of file r_sphere.c.

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 146 of file r_sphere.c.

References sphere_s::num_tris.

Referenced by R_SphereShade(), and R_SphereShadeGLSL().

void R_SphereShade

(

const sphere_t *

sphere

)

render sphere using standard OpenGL lighting

Definition at line 218 of file r_sphere.c.

References sphere_s::normals, sphere_s::overlay, sphere_s::overlayAlphaMask, qfalse, qtrue, 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().

void R_SphereShadeGLSL

(

const sphere_t *

sphere

)

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

Definition at line 249 of file r_sphere.c.

References sphere_s::blendScale, sphere_s::blendTexture, sphere_s::glowScale, sphere_s::glslProgram, cvar_s::integer, sphere_s::nightLightPos, sphere_s::normalMap, sphere_s::normals, qfalse, qtrue, R_BindArray(), R_BindTexture, R_BindTextureForTexUnit(), R_EnableLighting(), r_lights, r_postprocess, 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
	)			[inline, static]

Definition at line 36 of file r_sphere.c.

References f.

Referenced by R_SphereGenerate().

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Variable Documentation

sphere_t r_globeEarth

Definition at line 32 of file r_sphere.c.

Referenced by R_Draw3DGlobe().

sphere_t r_globeEarthAtmosphere

Definition at line 34 of file r_sphere.c.

Referenced by R_Draw3DGlobe().

sphere_t r_globeMoon

Definition at line 33 of file r_sphere.c.

Referenced by R_Draw3DGlobe().

cvar_t* r_sphereDetails [static]

Definition at line 30 of file r_sphere.c.