From: Ian Romanick Date: Fri, 30 Nov 2012 20:41:50 +0000 (-0800) Subject: mesa: Add skeleton implementation of glGetInternalformativ X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1b468d043e538a6302ad77a408ad123c58dc0e83;p=mesa.git mesa: Add skeleton implementation of glGetInternalformativ This is for the GL_ARB_internalformat_query extension and GLES 3.0. v2: Generate GL_INVALID_OPERATION if the extension is not supported. Signed-off-by: Ian Romanick Reviewed-by: Eric Anholt Reviewed-by: Jordan Justen --- diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c new file mode 100644 index 00000000000..64f10cdf494 --- /dev/null +++ b/src/mesa/main/formatquery.c @@ -0,0 +1,124 @@ +/* + * Copyright © 2012 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 (including the next + * paragraph) 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 + * THE AUTHORS OR COPYRIGHT HOLDERS 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 "mtypes.h" +#include "glformats.h" +#include "macros.h" +#include "mfeatures.h" +#include "enums.h" +#include "fbobject.h" +#include "formatquery.h" + +void GLAPIENTRY +_mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname, + GLsizei bufSize, GLint *params) +{ + GLint buffer[16]; + GLsizei count = 0; + GET_CURRENT_CONTEXT(ctx); + + if (!ctx->Extensions.ARB_internalformat_query) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetInternalformativ"); + return; + } + + /* The ARB_internalformat_query spec says: + * + * "If the parameter to GetInternalformativ is not one of + * TEXTURE_2D_MULTISAMPLE, TEXTURE_2D_MULTISAMPLE_ARRAY or RENDERBUFFER + * then an INVALID_ENUM error is generated." + */ + switch (target) { + case GL_RENDERBUFFER: + break; + + case GL_TEXTURE_2D_MULTISAMPLE: + case GL_TEXTURE_2D_MULTISAMPLE_ARRAY: + /* Mesa does not currently support GL_ARB_texture_multisample, so these + * enums are not valid on this implementation either. + */ + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetInternalformativ(target=%s)", + _mesa_lookup_enum_by_nr(target)); + return; + } + + /* The ARB_internalformat_query spec says: + * + * "If the parameter to GetInternalformativ is not + * color-, depth- or stencil-renderable, then an INVALID_ENUM error is + * generated." + */ + if (_mesa_base_fbo_format(ctx, internalformat) == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetInternalformativ(internalformat=%s)", + _mesa_lookup_enum_by_nr(internalformat)); + return; + } + + /* The ARB_internalformat_query spec says: + * + * "If the parameter to GetInternalformativ is negative, then + * an INVALID_VALUE error is generated." + */ + if (bufSize < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glGetInternalformativ(target=%s)", + _mesa_lookup_enum_by_nr(target)); + return; + } + + switch (pname) { + case GL_SAMPLES: + buffer[0] = ctx->Const.MaxSamples; + count = 1; + break; + case GL_NUM_SAMPLE_COUNTS: + buffer[0] = 1; + count = 1; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetInternalformativ(pname=%s)", + _mesa_lookup_enum_by_nr(pname)); + return; + } + + if (bufSize != 0 && params == NULL) { + /* Emit a warning to aid application debugging, but go ahead and do the + * memcpy (and probably crash) anyway. + */ + _mesa_warning(ctx, + "glGetInternalformativ(bufSize = %d, but params = NULL)", + bufSize); + } + + /* Copy the data from the temporary buffer to the buffer supplied by the + * application. Clamp the size of the copy to the size supplied by the + * application. + */ + memcpy(params, buffer, MIN2(count, bufSize) * sizeof(GLint)); + + return; +} diff --git a/src/mesa/main/formatquery.h b/src/mesa/main/formatquery.h new file mode 100644 index 00000000000..585c3eb64ba --- /dev/null +++ b/src/mesa/main/formatquery.h @@ -0,0 +1,35 @@ +/* + * Copyright © 2012 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 (including the next + * paragraph) 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 + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ + +#pragma once +#ifndef FORMATQUERY_H +#define FORMATQUERY_H + +#include "compiler.h" +#include "glheader.h" + +extern void GLAPIENTRY +_mesa_GetInternalformativ(GLenum target, GLenum internalformat, + GLenum pname, GLsizei bufSize, GLint *params); + +#endif /* FORMATQUERY_H */ diff --git a/src/mesa/sources.mak b/src/mesa/sources.mak index 8cde2c4cf6d..178ceb208af 100644 --- a/src/mesa/sources.mak +++ b/src/mesa/sources.mak @@ -42,6 +42,7 @@ MAIN_FILES = \ $(SRCDIR)main/ffvertex_prog.c \ $(SRCDIR)main/ff_fragment_shader.cpp \ $(SRCDIR)main/fog.c \ + $(SRCDIR)main/formatquery.c \ $(SRCDIR)main/formats.c \ $(SRCDIR)main/format_pack.c \ $(SRCDIR)main/format_unpack.c \