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author | marha <marha@users.sourceforge.net> | 2011-10-19 10:44:43 +0200 |
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committer | marha <marha@users.sourceforge.net> | 2011-10-19 10:44:43 +0200 |
commit | 9f986778bd4393c5a9108426969d45aa7f10f334 (patch) | |
tree | 27d7bd08dac54a54a923e76dccf2b8e388be2a03 /mesalib/src/mesa/main/uniform_query.cpp | |
parent | afbd3947071a33f59dda122f1ac396442a02c128 (diff) | |
download | vcxsrv-9f986778bd4393c5a9108426969d45aa7f10f334.tar.gz vcxsrv-9f986778bd4393c5a9108426969d45aa7f10f334.tar.bz2 vcxsrv-9f986778bd4393c5a9108426969d45aa7f10f334.zip |
libX11 libXext libXft mesa libxcb mkfontscale pixman xserver
xkeyboard-config git update 19 oct 2011
Diffstat (limited to 'mesalib/src/mesa/main/uniform_query.cpp')
-rw-r--r-- | mesalib/src/mesa/main/uniform_query.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/uniform_query.cpp b/mesalib/src/mesa/main/uniform_query.cpp new file mode 100644 index 000000000..ba7d7591f --- /dev/null +++ b/mesalib/src/mesa/main/uniform_query.cpp @@ -0,0 +1,80 @@ +/* + * Mesa 3-D graphics library + * + * Copyright (C) 2004-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved. + * Copyright © 2010, 2011 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ +#include "main/core.h" +#include "ir.h" +#include "../glsl/program.h" + +extern "C" { +#include "main/shaderapi.h" +#include "main/shaderobj.h" +#include "uniforms.h" +} + +extern "C" void GLAPIENTRY +_mesa_GetActiveUniformARB(GLhandleARB program, GLuint index, + GLsizei maxLength, GLsizei *length, GLint *size, + GLenum *type, GLcharARB *nameOut) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_shader_program *shProg = + _mesa_lookup_shader_program_err(ctx, program, "glGetActiveUniform"); + const struct gl_program_parameter *param; + + if (!shProg) + return; + + if (!shProg->Uniforms || index >= shProg->Uniforms->NumUniforms) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGetActiveUniform(index)"); + return; + } + + param = get_uniform_parameter(shProg, index); + if (!param) + return; + + const struct gl_uniform *const uni = &shProg->Uniforms->Uniforms[index]; + + if (nameOut) { + _mesa_copy_string(nameOut, maxLength, length, param->Name); + } + + if (size) { + GLint typeSize = _mesa_sizeof_glsl_type(uni->Type->gl_type); + if ((GLint) param->Size > typeSize) { + /* This is an array. + * Array elements are placed on vector[4] boundaries so they're + * a multiple of four floats. We round typeSize up to next multiple + * of four to get the right size below. + */ + typeSize = (typeSize + 3) & ~3; + } + /* Note that the returned size is in units of the <type>, not bytes */ + *size = param->Size / typeSize; + } + + if (type) { + *type = uni->Type->gl_type; + } +} |