texparam.c File Reference

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Detailed Description

glTexParameter-related functions

#include "main/glheader.h"
#include "main/context.h"
#include "main/enums.h"
#include "main/colormac.h"
#include "main/macros.h"
#include "main/texcompress.h"
#include "main/texparam.h"
#include "main/teximage.h"
#include "main/texstate.h"
#include "shader/prog_instruction.h"

Functions
static GLboolean	validate_texture_wrap_mode (GLcontext *ctx, GLenum target, GLenum wrap)
	Check if a coordinate wrap mode is supported for the texture target.
static struct gl_texture_object *	get_texobj (GLcontext *ctx, GLenum target)
	Get current texture object for given target.
static GLint	comp_to_swizzle (GLenum comp)
	Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.
static void	set_swizzle_component (GLuint *swizzle, GLuint comp, GLuint swz)
static INLINE void	flush (GLcontext *ctx, struct gl_texture_object *texObj)
	This is called just prior to changing any texture object state.
static GLboolean	set_tex_parameteri (GLcontext *ctx, struct gl_texture_object *texObj, GLenum pname, const GLint *params)
	Set an integer-valued texture parameter.
static GLboolean	set_tex_parameterf (GLcontext *ctx, struct gl_texture_object *texObj, GLenum pname, const GLfloat *params)
	Set a float-valued texture parameter.
void GLAPIENTRY	_mesa_TexParameterf (GLenum target, GLenum pname, GLfloat param)
void GLAPIENTRY	_mesa_TexParameterfv (GLenum target, GLenum pname, const GLfloat *params)
void GLAPIENTRY	_mesa_TexParameteri (GLenum target, GLenum pname, GLint param)
void GLAPIENTRY	_mesa_TexParameteriv (GLenum target, GLenum pname, const GLint *params)
void GLAPIENTRY	_mesa_GetTexLevelParameterfv (GLenum target, GLint level, GLenum pname, GLfloat *params)
void GLAPIENTRY	_mesa_GetTexLevelParameteriv (GLenum target, GLint level, GLenum pname, GLint *params)
void GLAPIENTRY	_mesa_GetTexParameterfv (GLenum target, GLenum pname, GLfloat *params)
void GLAPIENTRY	_mesa_GetTexParameteriv (GLenum target, GLenum pname, GLint *params)

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Function Documentation

void GLAPIENTRY _mesa_GetTexLevelParameterfv	(	GLenum	target,
		GLint	level,
		GLenum	pname,
		GLfloat *	params
	)

void GLAPIENTRY _mesa_GetTexLevelParameteriv	(	GLenum	target,
		GLint	level,
		GLenum	pname,
		GLint *	params
	)

void GLAPIENTRY _mesa_GetTexParameterfv	(	GLenum	target,
		GLenum	pname,
		GLfloat *	params
	)

void GLAPIENTRY _mesa_GetTexParameteriv	(	GLenum	target,
		GLenum	pname,
		GLint *	params
	)

void GLAPIENTRY _mesa_TexParameterf	(	GLenum	target,
		GLenum	pname,
		GLfloat	param
	)

void GLAPIENTRY _mesa_TexParameterfv	(	GLenum	target,
		GLenum	pname,
		const GLfloat *	params
	)

void GLAPIENTRY _mesa_TexParameteri	(	GLenum	target,
		GLenum	pname,
		GLint	param
	)

void GLAPIENTRY _mesa_TexParameteriv	(	GLenum	target,
		GLenum	pname,
		const GLint *	params
	)

static GLint comp_to_swizzle

(

GLenum

comp

)

[static]

Convert GL_RED/GREEN/BLUE/ALPHA/ZERO/ONE to SWIZZLE_X/Y/Z/W/ZERO/ONE.

Returns:

-1 if error.

static INLINE void flush	(	GLcontext *	ctx,
		struct gl_texture_object *	texObj
	)			[static]

This is called just prior to changing any texture object state.

Any pending rendering will be flushed out, we'll set the _NEW_TEXTURE state flag and then mark the texture object as 'incomplete' so that any per-texture derived state gets recomputed.

static struct gl_texture_object* get_texobj	(	GLcontext *	ctx,
		GLenum	target
	)			[static, read]

Get current texture object for given target.

Return NULL if any error.

static void set_swizzle_component	(	GLuint *	swizzle,
		GLuint	comp,
		GLuint	swz
	)			[static]

static GLboolean set_tex_parameterf	(	GLcontext *	ctx,
		struct gl_texture_object *	texObj,
		GLenum	pname,
		const GLfloat *	params
	)			[static]

Set a float-valued texture parameter.

Returns:

GL_TRUE if legal AND the value changed, GL_FALSE otherwise

static GLboolean set_tex_parameteri	(	GLcontext *	ctx,
		struct gl_texture_object *	texObj,
		GLenum	pname,
		const GLint *	params
	)			[static]

Set an integer-valued texture parameter.

Returns:

GL_TRUE if legal AND the value changed, GL_FALSE otherwise

static GLboolean validate_texture_wrap_mode	(	GLcontext *	ctx,
		GLenum	target,
		GLenum	wrap
	)			[static]

Check if a coordinate wrap mode is supported for the texture target.

Returns:

GL_TRUE if legal, GL_FALSE otherwise

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