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Proxy Texture

BlitzMax Forums/OpenGL Module/Proxy Texture

Vertex(Posted 2006) [#1]
I'am try to use GLAdjustTexSize ...
SuperStrict

Framework Brl.GLGraphics

Global Width  : Int
Global Height : Int

Graphics(640, 480)

Width  = 512
Height = 512
GLAdjustTexSize(Width, Height)

EndGraphics()
End


The result is "Unable to calculate tex size".

So I try it self...

Framework Brl.GLGraphics

Global Width  : Int
Global Height : Int

Graphics(640, 480)

glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, Null)
DebugLog glGetError()

glGetTexLevelParameteriv(GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, Varptr(Width))
DebugLog glGetError()

glGetTexLevelParameteriv(GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, Varptr(Height))
DebugLog glGetError()

DebugLog Width
DebugLog Height

EndGraphics()
End


glTexImage2D produce the error code 1282 -> 0x502 -> GL_INVALID_OPERATION

GL_INVALID_OPERATION is generated if glTexImage2D is executed between the
execution of glBegin and the corresponding execution of glEnd.



GL_INVALID_OPERATION is generated if type is one of
GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV,
GL_UNSIGNED_SHORT_5_6_5, or GL_UNSIGNED_SHORT_5_6_5_REV and
format is not GL_RGB.



GL_INVALID_OPERATION is generated if type is one of
GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV,
GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV,
GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV,
GL_UNSIGNED_INT_10_10_10_2, or GL_UNSIGNED_INT_2_10_10_10_REV and
format is neither GL_RGBA nor GL_BGRA.


So whats the problem?

cu olli


Chris C(Posted 2006) [#2]
replace graphics with glgraphics


Vertex(Posted 2006) [#3]
Yes, sorry, GLGraphics, but same problem.

cu olli


Dreamora(Posted 2006) [#4]
Mustn't textures be smaller than the opengl context IE in this case a maximum of 256x256 as this is the largest smaller square PoT size?


Vertex(Posted 2006) [#5]
No :)


Dreamora(Posted 2006) [#6]
Not even in OpenGL 1.2 on which the commands you use are fixed? ;-)


Chris C(Posted 2006) [#7]
on my system it didnt work with graphics but glgraphics did work.

you could try setting the gldriver as default see if that helps...

basically ensure that opengl is initialised and working