); gl.glActiveTexture( GL.GL_TEXTURE0_ARB); gl.glClientActiveTextureARB( GL.GL_TEXTURE0_ARB); gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer ); gl.glBindTexture ( GL.GL_TEXTURE_2D, detailTextures[ p ] ); gl.glActiveTexture( GL.GL_TEXTURE1_ARB); gl.glClientActiveTextureARB( GL.GL_TEXTURE1_ARB); gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer ); gl.glBindTexture ( GL.GL_TEXTURE_2D, bumpMaps[k][l] ); gl.glUseProgramObjectARB( normalShaderObj ); int base = gl.glGetUniformLocationARB( normalShaderObj, "Base".getBytes() ); int bump = gl.glGetUniformLocationARB( normalShaderObj, "Bump".getBytes() ); int lightPos = gl.glGetUniformLocationARB( normalShaderObj, "lightPos".getBytes() ); gl.glUniform1iARB( base, 0 ); gl.glUniform1iARB( bump, 1 ); gl.glUniform3fARB( lightPos, 256.0f, 200.0f, 256.0f ); gl.glDrawElements( GL.GL_TRIANGLE_STRIP, vertexIndexCount, GL.GL_UNSIGNED_INT, vertexIndexBuffer[k][l] ); gl.glUseProgramObjectARB( 0 ); gl.glActiveTexture( GL.GL_TEXTURE0_ARB); gl.glDisable( GL.GL_TEXTURE_2D ); gl.glDisableClientState( GL.GL_VERTEX_ARRAY ); gl.glDisableClientState( GL.GL_COLOR_ARRAY ); gl.glDisableClientState( GL.GL_TEXTURE_COORD_ARRAY );
question about multitexturing with opengl shading language
Author
I would like to use multitexturing with my indexed vertex arrays.
The texturing is performed by a fragment program.
The fragment program just draw the triangles with the second texture, and nothing more. (It's because this problem appeared)
But I see the first one. What is the problem?
Opengl code:
gl.glEnableClientState( GL.GL_VERTEX_ARRAY );
gl.glEnableClientState( GL.GL_COLOR_ARRAY );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
gl.glVertexPointer( 3, GL.GL_FLOAT, 0, vertexBuffer[k][l] );
gl.glColorPointer( 4, GL.GL_UNSIGNED_BYTE, 0, colorBuffer[k][l]
Well, in the code you provided, you dont seem to be enabling GL_TEXTURE_2D anywhere, maybe this is the problem?
Remember, when you glActiveTexture(GL_TEXTURE0_ARB);you must also glEnable(GL_TEXTURE_2D); But that only enables texturing for GL_TEXTURE0_ARB, if you want to have 2 textures, you must do glActiveTexture(GL_TEXTURE1_ARB); and glEnable(GL_TEXTURE_2D); to enable textures for GL_TEXTURE1_ARB.
Remember, when you glActiveTexture(GL_TEXTURE0_ARB);you must also glEnable(GL_TEXTURE_2D); But that only enables texturing for GL_TEXTURE0_ARB, if you want to have 2 textures, you must do glActiveTexture(GL_TEXTURE1_ARB); and glEnable(GL_TEXTURE_2D); to enable textures for GL_TEXTURE1_ARB.
Author
I put it to the code the
gl.glEnable( GL.GL_TEXTURE_2D ); statement, but my code still don't work.
My shader codes as You wished:
Vertex shader::::
varying vec4 color;
void main(void)
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
gl_TexCoord[0] = gl_MultiTexCoord0;
gl_TexCoord[1] = gl_MultiTexCoord1;
color = gl_Color;
}
Fragment shader:::
uniform sampler2D Base;
uniform sampler2D Bump;
varying vec4 color;
void main (void)
{
vec4 bumps = texture2D(Bump, gl_TexCoord[1].st );
gl_FragColor = bumps;
}
gl.glEnable( GL.GL_TEXTURE_2D ); statement, but my code still don't work.
My shader codes as You wished:
Vertex shader::::
varying vec4 color;
void main(void)
{
gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
gl_TexCoord[0] = gl_MultiTexCoord0;
gl_TexCoord[1] = gl_MultiTexCoord1;
color = gl_Color;
}
Fragment shader:::
uniform sampler2D Base;
uniform sampler2D Bump;
varying vec4 color;
void main (void)
{
vec4 bumps = texture2D(Bump, gl_TexCoord[1].st );
gl_FragColor = bumps;
}
Author
The shader render the first (GL_TEXTURE0_ARB) texture.
It is a problem through an oversight or a fatal mistake? :)
Thanks
It is a problem through an oversight or a fatal mistake? :)
Thanks
Author
I resolvedit:
gl.glClientActiveTextureARB( GL.GL_TEXTURE0_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundDetailTextures[ p ] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
gl.glClientActiveTextureARB( GL.GL_TEXTURE1_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundBumpMaps[k][l] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
"glClientActiveTextureARB(GLenum target) is the client state analog of glActiveTextureARB()" - reference :)
Thanks a lot anyway!
gl.glClientActiveTextureARB( GL.GL_TEXTURE0_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundDetailTextures[ p ] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
gl.glClientActiveTextureARB( GL.GL_TEXTURE1_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundBumpMaps[k][l] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
"glClientActiveTextureARB(GLenum target) is the client state analog of glActiveTextureARB()" - reference :)
Thanks a lot anyway!
Author
OOOOOOOOOOOOhhhhhhhhhhhhhhhhhhh!
The program render only the second texture :)))
So, my question is still active:))
The program render only the second texture :)))
So, my question is still active:))
Quote:Original post by fazekaim
I resolvedit:
gl.glClientActiveTextureARB( GL.GL_TEXTURE0_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundDetailTextures[ p ] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
gl.glClientActiveTextureARB( GL.GL_TEXTURE1_ARB);
gl.glBindTexture( GL.GL_TEXTURE_2D, groundBumpMaps[k][l] );
gl.glEnable( GL.GL_TEXTURE_2D);
gl.glTexCoordPointer( 2, GL.GL_FLOAT, 0, textureCoordinateBuffer );
gl.glEnableClientState( GL.GL_TEXTURE_COORD_ARRAY );
"glClientActiveTextureARB(GLenum target) is the client state analog of glActiveTextureARB()" - reference :)
Thanks a lot anyway!
the enabl;e texture + bind texture work on the current active texture unit.
with this code that texture unit is the same, (the client active texture unit changes though)
Author
I think, I probed every combination with this code.
I have no idea.
I read every tutorial, and the code should be working.
I don't know...
I have no idea.
I read every tutorial, and the code should be working.
I don't know...
Author
The problem as, that the texture names in the fragment shader started with capital letter.
I renamed "Bump" to "bumptexture" and "Base" to "basetexture" and it worked.
I renamed "Bump" to "bumptexture" and "Base" to "basetexture" and it worked.
This topic is closed to new replies.
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