#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 "r_misc.h"
#include "../cl_console.h"

Data Structures
struct	char_arrays_s
	Characters are batched per frame and drawn in one shot accumulate coordinates and colors as vertex arrays. More...

struct	batch_arrays_s
	array to store batched vertices and colors per frame More...

struct	bbox_arrays_s

struct	rect_t

Macros
#define	MAX_CHARS 8192

#define	MAX_BATCH_ENTRIES 512

#define	MAX_BBOX_ENTRIES 256

#define	MAX_LINEVERTS 256

#define	MAX_CLIPRECT 16

Typedefs
typedef struct char_arrays_s	char_arrays_t
	Characters are batched per frame and drawn in one shot accumulate coordinates and colors as vertex arrays. More...

typedef struct batch_arrays_s	batch_arrays_t
	array to store batched vertices and colors per frame More...

typedef struct bbox_arrays_s	bbox_arrays_t

Functions
void	R_DrawInitLocal (void)
	Loads some textures and init the 3d globe. More...

void	R_DrawChar (int x, int y, int num, uint32_t color)
	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. More...

void	R_DrawChars (void)

void	R_DrawFill (int x, int y, int w, int h, const vec4_t color)
	Fills a box of pixels with a single color. More...

void	R_DrawFills (void)

int	R_UploadData (const char name, unsigned frame, int width, int height)
	Uploads image data. More...

void	R_DrawTexture (int texnum, int x, int y, int w, int h)
	Bind and draw a texture. More...

void	R_DrawImage (float x, float y, const image_t *image)
	Draws an image or parts of it. More...

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_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. More...

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

static void	R_Draw2DArray (int points, int *verts, GLenum mode)

void	R_DrawLineStrip (int points, int *verts)
	2 dimensional line strip More...

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. More...

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. More...

void	R_PushClipRect (int x, int y, int width, int height)
	Force to draw only on a rect. More...

void	R_PopClipRect (void)

void	R_CleanupDepthBuffer (int x, int y, int width, int height)
	"Clean up" the depth buffer into a rect More...

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. More...

void	R_DrawBoundingBoxes (void)

void	R_DrawBoundingBoxBatched (const AABB &absbox)

void	R_DrawBoundingBox (const AABB &absBox)
	Draws the model bounding box. More...

void	R_DrawTexturedBox (const vec3_t a0, const vec3_t a1)
	Draws the textured box, the caller should bind the texture. More...

Variables
image_t *	shadow

static image_t *	draw_chars

static char_arrays_t	r_char_arrays

static batch_arrays_t	r_fill_arrays

static bbox_arrays_t	r_bbox_array

static rect_t	clipRect [MAX_CLIPRECT]

static int	currentClipRect = 0

Macro Definition Documentation

#define MAX_BATCH_ENTRIES 512

Definition at line 57 of file r_draw.cpp.

#define MAX_BBOX_ENTRIES 256

Definition at line 70 of file r_draw.cpp.

#define MAX_CHARS 8192

Definition at line 40 of file r_draw.cpp.

#define MAX_CLIPRECT 16

Definition at line 521 of file r_draw.cpp.

Referenced by R_PushClipRect().

#define MAX_LINEVERTS 256

Definition at line 449 of file r_draw.cpp.

Referenced by R_Draw2DArray().

Typedef Documentation

typedef struct batch_arrays_s batch_arrays_t

array to store batched vertices and colors per frame

typedef struct bbox_arrays_s bbox_arrays_t

typedef struct char_arrays_s char_arrays_t

Characters are batched per frame and drawn in one shot accumulate coordinates and colors as vertex arrays.

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 596 of file r_draw.cpp.

References rendererData_t::batchCount, R_BindArray(), R_BindDefaultArray(), refdef, viddef_t::rx, viddef_t::ry, and viddef.

Referenced by uiItemNode::draw(), uiRadarNode::draw(), uiSequenceNode::draw(), and UI_DrawModelNode().

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 630 of file r_draw.cpp.

References i.

Referenced by R_DrawBoundingBox(), and R_DrawBoundingBoxBatched().

static void R_Draw2DArray	(	int	points,
		int *	verts,
		GLenum	mode
	)

inlinestatic

Definition at line 451 of file r_draw.cpp.

References rendererData_t::batchCount, i, MAX_LINEVERTS, r_state, refdef, viddef_t::rx, viddef_t::ry, rstate_s::vertex_array_2d, rstate_s::vertex_array_3d, and viddef.

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

void R_DrawBoundingBox ( const AABB & absBox )

Draws the model bounding box.

See also: R_EntityComputeBoundingBox

Definition at line 690 of file r_draw.cpp.

References AABB::maxs, AABB::mins, R_BindArray(), R_BindDefaultArray(), and R_ComputeBoundingBox().

Referenced by R_DrawAliasModel(), R_DrawBox(), R_DrawModelDirect(), R_DrawModelParticle(), and R_RenderBspRRefs().

void R_DrawBoundingBoxBatched ( const AABB & absbox )

Definition at line 670 of file r_draw.cpp.

References bbox_arrays_s::bboxes, bbox_arrays_s::bboxes_index, i, lengthof, AABB::maxs, AABB::mins, R_ComputeBoundingBox(), and VectorCopy.

Referenced by CL_Trace().

void R_DrawBoundingBoxes ( void )

Definition at line 640 of file r_draw.cpp.

References bbox_arrays_s::bboxes, bbox_arrays_s::bboxes_index, i, R_BindArray(), R_BindDefaultArray(), and R_Color().

Referenced by R_RenderFrame().

void R_DrawChar	(	int	x,
		int	y,
		int	num,
		uint32_t	color
	)

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 99 of file r_draw.cpp.

References char_arrays_s::color_index, char_arrays_s::colors, con_fontHeight, con_fontWidth, int(), lengthof, char_arrays_s::texcoord_index, char_arrays_s::texcoords, char_arrays_s::vert_index, and char_arrays_s::verts.

Referenced by Con_DrawConsole(), and Con_DrawText().

void R_DrawChars ( void )

Definition at line 155 of file r_draw.cpp.

References rendererData_t::batchCount, char_arrays_s::color_index, char_arrays_s::colors, R_BindArray(), R_BindDefaultArray(), R_BindTexture, R_DrawArrays(), R_EnableColorArray(), refdef, char_arrays_s::texcoord_index, char_arrays_s::texcoords, image_s::texnum, char_arrays_s::vert_index, and char_arrays_s::verts.

Referenced by R_EndFrame().

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

Definition at line 422 of file r_draw.cpp.

References rendererData_t::batchCount, f, i, lengthof, M_PI, R_BindArray(), R_BindDefaultArray(), R_Color(), refdef, and VectorSet.

Referenced by R_DrawPtlCircle().

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

Fills a box of pixels with a single color.

Todo:: this shouldn't be here, but only called once at the end of the frame but this is needed here because a) we don't want them to get rendered on top of the console and b) the ui stuff relies on the order of these renderings

Definition at line 188 of file r_draw.cpp.

References batch_arrays_s::color_index, batch_arrays_s::colors, lengthof, LittleLong, R_DrawFills(), viddef_t::rx, viddef_t::ry, batch_arrays_s::vert_index, batch_arrays_s::verts, and viddef.

Referenced by uiLineChartNode::draw(), GAME_GetImportData(), SCR_DrawLoadingBar(), SEQ_Render2D(), and UI_DrawFill().

void R_DrawFills ( void )

Definition at line 232 of file r_draw.cpp.

References rendererData_t::batchCount, batch_arrays_s::color_index, batch_arrays_s::colors, R_BindArray(), R_BindDefaultArray(), R_Color(), R_DrawArrays(), R_EnableColorArray(), R_EnableTexture(), refdef, texunit_diffuse, batch_arrays_s::vert_index, and batch_arrays_s::verts.

Referenced by R_DrawFill().

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

Draws an image or parts of it.

Parameters

	x,y	position to draw the image to
[in]	image	Pointer to the imlage to display

Definition at line 341 of file r_draw.cpp.

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

Referenced by HUD_UpdateCursor(), R_DrawImageCentered(), SCR_DrawCursor(), SCR_DrawLoadingScreen(), 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 357 of file r_draw.cpp.

References rendererData_t::batchCount, R_BindArray(), R_BindDefaultArray(), R_BindTexture, refdef, 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 83 of file r_draw.cpp.

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_DrawLineStrip

Definition at line 494 of file r_draw.cpp.

References R_Draw2DArray().

Referenced by GAME_GetImportData().

void R_DrawLineLoop	(	int	points,
		int *	verts
	)

See also: R_DrawLineStrip

Definition at line 485 of file r_draw.cpp.

References R_Draw2DArray().

void R_DrawLineStrip	(	int	points,
		int *	verts
	)

2 dimensional line strip

See also: R_DrawLineLoop

Definition at line 477 of file r_draw.cpp.

References R_Draw2DArray().

Referenced by uiLineChartNode::draw(), and GAME_GetImportData().

void R_DrawPolygon	(	int	points,
		int *	verts
	)

See also: R_DrawLineStrip; R_DrawLineLoop

Definition at line 509 of file r_draw.cpp.

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,y	X/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 390 of file r_draw.cpp.

References rendererData_t::batchCount, f, R_BindDefaultArray(), R_Color(), refdef, viddef_t::rx, viddef_t::ry, and viddef.

Referenced by GAME_GetImportData(), SEQ_Render2D(), and UI_DrawRect().

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

Definition at line 349 of file r_draw.cpp.

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,y	normalized position on the screen
[in]	w,h	normalized width and height values

Definition at line 328 of file r_draw.cpp.

References default_texcoords, R_BindTexture, R_DrawImageArray(), and Vector2FromInt.

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

void R_DrawTexturedBox	(	const vec3_t	a0,
		const vec3_t	a1
	)

Draws the textured box, the caller should bind the texture.

See also: R_DrawBox

Definition at line 714 of file r_draw.cpp.

References R_BindArray(), and R_BindDefaultArray().

Referenced by R_DrawBox().

void R_PopClipRect ( void )

See also: R_PushClipRect

Definition at line 579 of file r_draw.cpp.

References currentClipRect.

Referenced by UI_PopClipRect().

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 550 of file r_draw.cpp.

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_PushClipRect().

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 533 of file r_draw.cpp.

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

Referenced by R_PushClipRect().

int R_UploadData	(	const char *	name,
		unsigned *	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