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LibGL: Implement glIsTexture

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Required by Xash3D for the r_showtextures command, where it shows every
allocated texture on screen.

Description of glIsTexture from the spec:
"glIsTexture returns GL_TRUE if texture is currently the name of a
texture. If texture is zero, or is a non-zero value that is not
currently the name of a texture, or if an error occurs, glIsTexture
returns GL_FALSE.

A name returned by glGenTextures, but not yet associated with a texture
by calling glBindTexture, is not the name of a texture."

https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glIsTexture.xhtml
This commit is contained in:
Luke Wilde 2022-01-13 06:02:33 +00:00 • committed by Andreas Kling
parent adfb0846d2
commit 1fc611877f
5 changed files with 22 additions and 0 deletions
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1
Userland/Libraries/LibGL/SoftwareGLContext.h
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@ -102,6 +102,7 @@ public:
virtual void gl_tex_coord(GLfloat s, GLfloat t, GLfloat r, GLfloat q) override;
virtual void gl_tex_env(GLenum target, GLenum pname, GLfloat param) override;
virtual void gl_bind_texture(GLenum target, GLuint texture) override;
virtual GLboolean gl_is_texture(GLuint texture) override;
virtual void gl_active_texture(GLenum texture) override;
virtual void gl_depth_mask(GLboolean flag) override;
virtual void gl_enable_client_state(GLenum cap) override;