r_draw.c File Reference

#include "r_local.h"
#include "r_sphere.h"
#include "r_error.h"
#include "r_draw.h"
#include "r_mesh.h"
#include "r_framebuffer.h"
#include "r_program.h"
#include "../cl_console.h"

Include dependency graph for r_draw.c:

Go to the source code of this file.

Data Structures
struct	rect_t
Defines
#define	MAX_CHARS 8192
#define	CIRCLE_LINE_COUNT 40
#define	MAX_LINEVERTS 256
#define	MAX_CLIPRECT 16
Functions
void	R_DrawInitLocal (void)
	Loads some textures and init the 3d globe.
void	R_DrawChar (int x, int y, int num)
	Draws one 8*8 graphics character with 0 being transparent. It can be clipped to the top of the screen to allow the console to be smoothly scrolled off.
void	R_DrawChars (void)
int	R_UploadData (const char name, byte frame, int width, int height)
	Uploads image data.
const image_t *	R_RegisterImage (const char *name)
	Searches for an image in the image array.
void	R_DrawTexture (int texnum, int x, int y, int w, int h)
	Bind and draw a texture.
void	R_DrawImage (float x, float y, const image_t *image)
	Draws an image or parts of it.
void	R_DrawStretchImage (float x, float y, int w, int h, const image_t *image)
const image_t *	R_DrawImageArray (const vec2_t texcoords[4], const vec2_t verts[4], const image_t *image)
void	R_DrawFill (int x, int y, int w, int h, const vec4_t color)
	Fills a box of pixels with a single color.
void	R_DrawRect (int x, int y, int w, int h, const vec4_t color, float lineWidth, int pattern)
	Draws a rect to the screen. Also has support for stippled rendering of the rect.
void	R_DrawCircle (vec3_t mid, float radius, const vec4_t color, int thickness)
	Draws a circle out of lines.
void	R_DrawCircle2D (int x, int y, float radius, qboolean fill, const vec4_t color, float thickness)
	Draws a circle out of lines.
static void	R_Draw2DArray (int points, int *verts, GLenum mode)
void	R_DrawLineStrip (int points, int *verts)
	2 dimensional line strip
void	R_DrawLineLoop (int points, int *verts)
void	R_DrawLine (int *verts, float thickness)
	Draws one line with only one start and one end point.
void	R_DrawPolygon (int points, int *verts)
static void	R_RectIntersection (const rect_t a, const rect_t b, rect_t *out)
	Compute the intersection of 2 rect.
void	R_PushClipRect (int x, int y, int width, int height)
	Force to draw only on a rect.
void	R_PopClipRect (void)
void	R_CleanupDepthBuffer (int x, int y, int width, int height)
	"Clean up" the depth buffer into a rect
static void	R_ComputeBoundingBox (const vec3_t mins, const vec3_t maxs, vec3_t bbox[8])
	Compute the bounding box for an entity out of the mins, maxs.
void	R_DrawBoundingBox (const vec3_t mins, const vec3_t maxs)
	Draws the model bounding box.
Variables
image_t *	shadow
static image_t *	draw_chars
static float	char_texcoords [MAX_CHARS 4 2]
static short	char_verts [MAX_CHARS 4 2]
static int	char_index = 0
static rect_t	clipRect [MAX_CLIPRECT]
static int	currentClipRect = 0

Detailed Description

Definition in file r_draw.c.

Define Documentation

#define CIRCLE_LINE_COUNT 40

Definition at line 382 of file r_draw.c.

Referenced by R_DrawCircle2D().

#define MAX_CHARS 8192

Definition at line 54 of file r_draw.c.

Referenced by R_DrawChar().

#define MAX_CLIPRECT 16

Definition at line 510 of file r_draw.c.

Referenced by R_PushClipRect().

#define MAX_LINEVERTS 256

Definition at line 434 of file r_draw.c.

Referenced by R_Draw2DArray().

Function Documentation

void R_CleanupDepthBuffer	(	int	x,
		int	y,
		int	width,
		int	height
	)

"Clean up" the depth buffer into a rect

Note:: we use a big value (but not too big) to set the depth buffer, then it is not really a clean up

Todo:: can we fix bigZ with a value come from glGet?

Definition at line 585 of file r_draw.c.

References GLboolean(), GLint, viddef_t::rx, viddef_t::ry, and viddef.

Referenced by UI_DrawModelNode(), UI_ItemNodeDraw(), and UI_RadarNodeDraw().

static void R_ComputeBoundingBox	(	const vec3_t	mins,
		const vec3_t	maxs,
		vec3_t	bbox[8]
	)			`[static]`

Compute the bounding box for an entity out of the mins, maxs.

See also:: R_DrawBoundingBox

Definition at line 618 of file r_draw.c.

References i.

Referenced by R_DrawBoundingBox().

static void R_Draw2DArray	(	int	points,
		int *	verts,
		GLenum	mode
	)			`[inline, static]`

Definition at line 436 of file r_draw.c.

References i, MAX_LINEVERTS, r_state, viddef_t::rx, viddef_t::ry, rstate_t::vertex_array_2d, rstate_t::vertex_array_3d, and viddef.

Referenced by R_DrawLine(), R_DrawLineLoop(), R_DrawLineStrip(), and R_DrawPolygon().

void R_DrawBoundingBox	(	const vec3_t	mins,
		const vec3_t	maxs
	)

Draws the model bounding box.

See also:: R_EntityComputeBoundingBox

Definition at line 634 of file r_draw.c.

References R_ComputeBoundingBox().

Referenced by R_DrawBox(), R_DrawBrushModel(), R_DrawModelDirect(), R_DrawModelParticle(), and R_DrawSurface().

void R_DrawChar	(	int	x,
		int	y,
		int	num
	)

Draws one 8*8 graphics character with 0 being transparent. It can be clipped to the top of the screen to allow the console to be smoothly scrolled off.

Definition at line 66 of file r_draw.c.

References char_index, char_texcoords, char_verts, con_fontHeight, con_fontWidth, int(), and MAX_CHARS.

Referenced by Con_DisplayString(), Con_DrawConsole(), Con_DrawInput(), Con_DrawNotify(), and SCR_DrawString().

void R_DrawChars ( void )

Definition at line 110 of file r_draw.c.

References char_index, char_texcoords, char_verts, R_BindDefaultArray(), R_BindTexture, and image_s::texnum.

Referenced by SCR_UpdateScreen().

void R_DrawCircle	(	vec3_t	mid,
		float	radius,
		const vec4_t	color,
		int	thickness
	)

Draws a circle out of lines.

Parameters:

`[in]`	mid	Center of the circle
`[in]`	radius	Radius of the circle
`[in]`	color	The color of the circle lines

See also:: R_DrawPtlCircle; R_DrawLineStrip

Definition at line 334 of file r_draw.c.

References R_Color(), viddef_t::rx, and viddef.

void R_DrawCircle2D	(	int	x,
		int	y,
		float	radius,
		qboolean	fill,
		const vec4_t	color,
		float	thickness
	)

Draws a circle out of lines.

Parameters:

`[in]`	x	X screen coordinate
`[in]`	y	Y screen coordinate
`[in]`	radius	Radius of the circle
`[in]`	color	The color of the circle lines
`[in]`	fill	Fill the circle with the given color
`[in]`	thickness	The thickness of the lines

See also:: R_DrawPtlCircle; R_DrawLineStrip

Definition at line 395 of file r_draw.c.

References CIRCLE_LINE_COUNT, i, and R_Color().

void R_DrawFill	(	int	x,
		int	y,
		int	w,
		int	h,
		const vec4_t	color
	)

Fills a box of pixels with a single color.

Definition at line 261 of file r_draw.c.

References R_Color(), viddef_t::rx, viddef_t::ry, and viddef.

Referenced by MAP_DrawAircraftHealthBar(), MAP_DrawBullets(), SCR_DrawLoadingBar(), SEQ_Render2D(), and UI_DrawFill().

void R_DrawImage	(	float	x,
		float	y,
		const image_t *	image
	)

Draws an image or parts of it.

Parameters:

`[in]`	x	X position to draw the image to
`[in]`	y	Y position to draw the image to

Definition at line 224 of file r_draw.c.

References image_s::height, R_DrawTexture(), viddef_t::rx, viddef_t::ry, image_s::texnum, viddef, and image_s::width.

Referenced by HUD_UpdateCursor(), MAP_DrawMapMarkers(), MAP_DrawMapOneBase(), MAP_DrawMapOneInstallation(), MAP_DrawMapOneMission(), MAP_DrawMapOnePhalanxAircraft(), SCR_DrawCursor(), SCR_DrawLoading(), SCR_DrawPrecacheScreen(), and SEQ_Render2D().

const image_t* R_DrawImageArray	(	const vec2_t	texcoords[4],
		const vec2_t	verts[4],
		const image_t *	image
	)

Definition at line 240 of file r_draw.c.

References R_BindArray(), R_BindDefaultArray(), R_BindTexture, and image_s::texnum.

Referenced by R_DrawTexture(), UI_DrawNormImage(), and UI_RadarNodeDrawArrays().

void R_DrawInitLocal ( void )

Loads some textures and init the 3d globe.

See also:: R_Init

Definition at line 43 of file r_draw.c.

References Com_Error(), Com_Printf(), ERR_FATAL, it_chars, it_effect, R_FindImage(), and r_noTexture.

Referenced by R_Init().

void R_DrawLine	(	int *	verts,
		float	thickness
	)

Draws one line with only one start and one end point.

See also:: R_DrawCircle; R_DrawLineStrip

Definition at line 482 of file r_draw.c.

References R_Draw2DArray().

Referenced by MAP_DrawBeam().

void R_DrawLineLoop	(	int	points,
		int *	verts
	)

See also:: R_DrawCircle; R_DrawLineStrip

Definition at line 472 of file r_draw.c.

References R_Draw2DArray().

void R_DrawLineStrip	(	int	points,
		int *	verts
	)

2 dimensional line strip

See also:: R_DrawCircle; R_DrawLineLoop

Definition at line 463 of file r_draw.c.

References R_Draw2DArray().

Referenced by MAP_3DMapDrawLine(), MAP_MapDrawEquidistantPoints(), MAP_MapDrawLine(), RADAR_DrawInMap(), and UI_LineChartNodeDraw().

void R_DrawPolygon	(	int	points,
		int *	verts
	)

See also:: R_DrawCircle; R_DrawLineStrip; R_DrawLineLoop

Definition at line 498 of file r_draw.c.

References R_Draw2DArray().

void R_DrawRect	(	int	x,
		int	y,
		int	w,
		int	h,
		const vec4_t	color,
		float	lineWidth,
		int	pattern
	)

Draws a rect to the screen. Also has support for stippled rendering of the rect.

Parameters:

`[in]`	x	X-position of the rect
`[in]`	y	Y-position of the rect
`[in]`	w	Width of the rect
`[in]`	h	Height of the rect
`[in]`	color	RGBA color of the rect
`[in]`	lineWidth	Line strength in pixel of the rect
`[in]`	pattern	Specifies a 16-bit integer whose bit pattern determines which fragments of a line will be drawn when the line is rasterized. Bit zero is used first; the default pattern is all 1's

Note:: The stipple factor is 2 for this function

Definition at line 298 of file r_draw.c.

References f, R_Color(), viddef_t::rx, viddef_t::ry, and viddef.

Referenced by MAP_DrawAircraftHealthBar(), UI_DrawNode(), UI_EditorNodeHighlightNode(), and UI_MaterialEditorNodeDraw().

void R_DrawStretchImage	(	float	x,
		float	y,
		int	w,
		int	h,
		const image_t *	image
	)

Definition at line 232 of file r_draw.c.

References R_DrawTexture(), viddef_t::rx, viddef_t::ry, image_s::texnum, and viddef.

Referenced by Con_DrawConsole().

void R_DrawTexture	(	int	texnum,
		int	x,
		int	y,
		int	w,
		int	h
	)

Bind and draw a texture.

Parameters:

`[in]`	texnum	The texture id (already uploaded of course)
`[in]`	x	normalized x value on the screen
`[in]`	y	normalized y value on the screen
`[in]`	w	normalized width value
`[in]`	h	normalized height value

Definition at line 211 of file r_draw.c.

References default_texcoords, R_BindTexture, and R_DrawImageArray().

Referenced by CIN_OGM_DrawCinematic(), CIN_ROQ_DrawCinematic(), R_Draw3DGlobe(), R_DrawImage(), and R_DrawStretchImage().

void R_PopClipRect ( void )

See also:: R_PushClipRect

Definition at line 568 of file r_draw.c.

References currentClipRect.

Referenced by UI_BaseInventoryNodeDraw2(), UI_DrawModelNode(), UI_DrawNode(), UI_MapNodeDraw(), and UI_RadarNodeDraw().

void R_PushClipRect	(	int	x,
		int	y,
		int	width,
		int	height
	)

Force to draw only on a rect.

Note:: Don't forget to call R_EndClipRect

See also:: R_PopClipRect

Definition at line 539 of file r_draw.c.

References currentClipRect, rect_t::height, MAX_CLIPRECT, R_RectIntersection(), viddef_t::rx, viddef_t::ry, viddef, viddef_t::virtualHeight, rect_t::width, rect_t::x, and rect_t::y.

Referenced by UI_BaseInventoryNodeDraw2(), UI_DrawModelNode(), UI_DrawNode(), UI_MapNodeDraw(), and UI_RadarNodeDraw().

static void R_RectIntersection	(	const rect_t *	a,
		const rect_t *	b,
		rect_t *	out
	)			`[static]`

Compute the intersection of 2 rect.

Parameters:

`[in]`	a	A rect
`[in]`	b	A rect
`[out]`	out	The intersection rect

Definition at line 522 of file r_draw.c.

References rect_t::height, rect_t::width, rect_t::x, and rect_t::y.

Referenced by R_PushClipRect().

const image_t* R_RegisterImage ( const char * name )

Searches for an image in the image array.

Parameters:

[in] name The name of the image relative to pics/

Note:: name may not be null and has to be longer than 4 chars

Returns:: NULL on error or image_t pointer on success

See also:: R_FindImage

Definition at line 195 of file r_draw.c.

References it_pic, R_FindImage(), r_noTexture, and va().

Referenced by CL_ParticleLoadArt(), and SEQ_ExecutePrecache().

int R_UploadData	(	const char *	name,
		byte *	frame,
		int	width,
		int	height
	)

Uploads image data.

Parameters:

`[in]`	name	The name of the texture to use for this data
`[in]`	frame	The frame data that is uploaded
`[in]`	width	The width of the texture
`[in]`	height	The height of the texture