зеркало из https://github.com/AvaloniaUI/angle.git
114 строки
3.2 KiB
Plaintext
114 строки
3.2 KiB
Plaintext
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Name
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ANGLE_translated_shader_source
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Name Strings
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GL_ANGLE_translated_shader_source
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Contributors
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Daniel Koch, TransGaming Inc.
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Gregg Tavares, Google Inc.
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Kenneth Russell, Google Inc.
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Zhenyao Mo, Google Inc.
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Contact
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Zhenyao Mo, Google Inc. (zmo 'at' google 'dot' com)
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Status
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Implemented in ANGLE ES2
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Version
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Last Modified Date: Septemper 29, 2011
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Author Revision: 1
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Number
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OpenGL ES Extension #??
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Dependencies
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OpenGL ES 2.0 is required.
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The extension is written against the OpenGL ES 2.0 specification.
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Overview
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WebGL uses the GLSL ES 2.0 spec on all platforms, and translates these
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shaders to the host platform's native language (HLSL, GLSL, and even GLSL
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ES). For debugging purposes, it is useful to be able to examine the shader
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after translation.
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This extension addes a new function to query the translated shader source,
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and adds a new enum for GetShaderiv's <pname> parameter to query the
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translated shader source length.
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IP Status
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No known IP claims.
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New Types
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None
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New Procedures and Functions
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void GetTranslatedShaderSourceANGLE(uint shader, sizei bufsize,
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sizei* length, char* source);
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New Tokens
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Accepted by the <pname> parameter of GetShaderiv:
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TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE 0x6900
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Additions to Chapter 6 of the OpenGL ES 2.0 Specification (State and State
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Requests)
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Append in the end of the fourth paragraph of section 6.1.8 (Shader and
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Program Queries):
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" If <pname> is TRANSLATED_SHADER_LENGTH_ANGLE, the length of the translated
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source string, including a null terminator, is returned. If no source has
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been defined, CompileShader has not been called, or the translation has
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failed for <shader>, zero is returned."
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Append after the last paragraph of section 6.1.8 (Shader and Program
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Queries):
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"The command
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void GetTranslatedShaderSourceANGLE( uint shader, sizei bufSize,
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sizei *length, char *source );
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returns in <source> the string making up the translated source code for
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the shader object <shader>. The string <source> will be null terminated.
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The actual number of characters written into <source>, excluding the null
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terminator, is returned in <length>. If <length> is NULL, no length is
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returned. The maximum number of characters that may be written into
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<source>, including the null terminator, is specified by <bufSize>. The
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string <source> is the translated string of a concatenation of the strings
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passed to the GL using ShaderSource. The length of this translated string
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is given by TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE, which can be queried
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with GetShaderiv.
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If no source has been defined, CompileShader has not been called, or the
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translation has failed for <shader>, zero is returned for <length>, and
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an empty string is returned for <source>.
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If the value of SHADER_COMPILER is not TRUE, then the error INVALID_-
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OPERATION is generated."
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Issues
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1) 0x6900 is temporarily assigned to TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE.
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Revision History
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Revision 1, 2011/09/29
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- first draft
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