com.serenegiant.glutils

Class GLHelper

java.lang.Object

com.serenegiant.glutils.GLHelper

public final class GLHelper
extends java.lang.Object

OpenGL|ES2/3用のヘルパークラス

Constructor Summary

Constructors

Constructor and Description
GLHelper()

Method Summary

Modifier and Type	Method and Description
static void	checkGlError(java.lang.String op) OpenGL|ESのエラーをチェックしてlogCatに出力する
static void	checkLocation(int location, java.lang.String label) Checks to see if the location we obtained is valid.
static int	createTextureWithTextContent(java.lang.String text)
static void	deleteTex(int hTex) delete specific texture
static int	initTex(int texTarget, int filter_param) テクスチャ名を生成, テクスチャユニットはGL_TEXTURE0, クランプ方法はGL_CLAMP_TO_EDGE
static int	initTex(int texTarget, int texUnit, int min_filter, int mag_filter, int wrap) テクスチャ名を生成(GL_TEXTURE0のみ)
static int	loadShader(android.content.Context context, java.lang.String vss_asset, java.lang.String fss_asset) load, compile and link shader from Assets files
static int	loadShader(int shaderType, java.lang.String source) Compiles the provided shader source.
static int	loadShader(java.lang.String vss, java.lang.String fss) load, compile and link shader
static int	loadTextureFromResource(android.content.Context context, int resId)
static void	logVersionInfo() Writes GL version info to the log.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GLHelper

public GLHelper()

Method Detail

checkGlError

public static void checkGlError(java.lang.String op)

OpenGL|ESのエラーをチェックしてlogCatに出力する

Parameters:

op -

initTex

public static int initTex(int texTarget,
                          int filter_param)

テクスチャ名を生成, テクスチャユニットはGL_TEXTURE0, クランプ方法はGL_CLAMP_TO_EDGE

Parameters:

texTarget -

filter_param - テクスチャの補完方法を指定, min/mag共に同じ値になる, GL_LINEARとかGL_NEAREST

Returns:

initTex

public static int initTex(int texTarget,
                          int texUnit,
                          int min_filter,
                          int mag_filter,
                          int wrap)

テクスチャ名を生成(GL_TEXTURE0のみ)

Parameters:

texTarget -

texUnit - テクスチャユニット, GL_TEXTURE0...GL_TEXTURE31

min_filter - テクスチャの補間方法を指定, GL_LINEARとかGL_NEAREST

mag_filter - テクスチャの補間方法を指定, GL_LINEARとかGL_NEAREST

wrap - テクスチャのクランプ方法, GL_CLAMP_TO_EDGE

Returns:

deleteTex

public static void deleteTex(int hTex)

delete specific texture

loadTextureFromResource

public static int loadTextureFromResource(android.content.Context context,
                                          int resId)

createTextureWithTextContent

public static int createTextureWithTextContent(java.lang.String text)

loadShader

public static int loadShader(android.content.Context context,
                             java.lang.String vss_asset,
                             java.lang.String fss_asset)

load, compile and link shader from Assets files

Parameters:

context -

vss_asset - source file name in Assets of vertex shader

fss_asset - source file name in Assets of fragment shader

Returns:

loadShader

public static int loadShader(java.lang.String vss,
                             java.lang.String fss)

load, compile and link shader

Parameters:

vss - source of vertex shader

fss - source of fragment shader

Returns:

loadShader

public static int loadShader(int shaderType,
                             java.lang.String source)

Compiles the provided shader source.

Returns:

A handle to the shader, or 0 on failure.

checkLocation

public static void checkLocation(int location,
                                 java.lang.String label)

Checks to see if the location we obtained is valid. GLES returns -1 if a label could not be found, but does not set the GL error.

Throws a RuntimeException if the location is invalid.

logVersionInfo

public static void logVersionInfo()

Writes GL version info to the log.