mirror of
https://github.com/reactos/reactos.git
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5f2bebf7a5
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
288 lines
7 KiB
C
288 lines
7 KiB
C
/* $Id: colortab.c,v 1.6 1997/10/16 02:26:18 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 2.5
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* Copyright (C) 1995-1997 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* $Log: colortab.c,v $
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* Revision 1.6 1997/10/16 02:26:18 brianp
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* call Driver.UpdateTexturePalette(ctx,NULL) when shared palette changed
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*
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* Revision 1.5 1997/10/16 01:59:08 brianp
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* added GL_EXT_shared_texture_palette extension
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*
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* Revision 1.4 1997/10/15 23:37:05 brianp
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* removed dirty flag stuff
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*
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* Revision 1.3 1997/10/13 23:50:03 brianp
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* added call to Driver.UpdateTexturePalette
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*
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* Revision 1.2 1997/09/29 23:27:44 brianp
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* updated for new device driver texture functions
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*
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* Revision 1.1 1997/09/27 00:12:46 brianp
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* Initial revision
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*
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*/
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#ifdef PC_HEADER
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#include "all.h"
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#else
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#include "colortab.h"
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#include "context.h"
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#include "macros.h"
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#endif
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/*
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* Return GL_TRUE if k is a power of two, else return GL_FALSE.
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*/
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static GLboolean power_of_two( GLint k )
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{
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GLint i, m = 1;
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for (i=0; i<32; i++) {
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if (k == m)
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return GL_TRUE;
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m = m << 1;
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}
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return GL_FALSE;
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}
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static GLint decode_internal_format( GLint format )
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{
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switch (format) {
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case GL_ALPHA:
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case GL_ALPHA4:
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case GL_ALPHA8:
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case GL_ALPHA12:
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case GL_ALPHA16:
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return GL_ALPHA;
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case 1:
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case GL_LUMINANCE:
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case GL_LUMINANCE4:
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case GL_LUMINANCE8:
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case GL_LUMINANCE12:
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case GL_LUMINANCE16:
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return GL_LUMINANCE;
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case 2:
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case GL_LUMINANCE_ALPHA:
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case GL_LUMINANCE4_ALPHA4:
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case GL_LUMINANCE6_ALPHA2:
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case GL_LUMINANCE8_ALPHA8:
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case GL_LUMINANCE12_ALPHA4:
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case GL_LUMINANCE12_ALPHA12:
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case GL_LUMINANCE16_ALPHA16:
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return GL_LUMINANCE_ALPHA;
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case GL_INTENSITY:
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case GL_INTENSITY4:
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case GL_INTENSITY8:
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case GL_INTENSITY12:
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case GL_INTENSITY16:
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return GL_INTENSITY;
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case 3:
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case GL_RGB:
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case GL_R3_G3_B2:
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case GL_RGB4:
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case GL_RGB5:
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case GL_RGB8:
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case GL_RGB10:
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case GL_RGB12:
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case GL_RGB16:
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return GL_RGB;
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case 4:
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case GL_RGBA:
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case GL_RGBA2:
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case GL_RGBA4:
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case GL_RGB5_A1:
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case GL_RGBA8:
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case GL_RGB10_A2:
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case GL_RGBA12:
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case GL_RGBA16:
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return GL_RGBA;
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default:
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return -1; /* error */
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}
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}
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void gl_ColorTable( GLcontext *ctx, GLenum target,
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GLenum internalFormat, struct gl_image *table )
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{
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struct gl_texture_object *texObj;
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GLboolean proxy = GL_FALSE;
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glGetBooleanv" );
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return;
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}
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switch (target) {
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case GL_TEXTURE_1D:
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texObj = ctx->Texture.Current1D;
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break;
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case GL_TEXTURE_2D:
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texObj = ctx->Texture.Current2D;
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break;
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case GL_PROXY_TEXTURE_1D:
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texObj = ctx->Texture.Proxy1D;
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proxy = GL_TRUE;
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break;
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case GL_PROXY_TEXTURE_2D:
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texObj = ctx->Texture.Proxy2D;
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proxy = GL_TRUE;
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break;
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default:
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gl_error(ctx, GL_INVALID_ENUM, "glColorTableEXT(target)");
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return;
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}
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/* internalformat = just like glTexImage */
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if (table->Width < 1 || table->Width > MAX_TEXTURE_PALETTE_SIZE
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|| !power_of_two(table->Width)) {
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gl_error(ctx, GL_INVALID_VALUE, "glColorTableEXT(width)");
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if (proxy) {
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texObj->PaletteSize = 0;
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texObj->PaletteIntFormat = 0;
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texObj->PaletteFormat = 0;
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}
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return;
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}
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/* per-texture object palette */
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texObj->PaletteSize = table->Width;
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texObj->PaletteIntFormat = internalFormat;
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texObj->PaletteFormat = decode_internal_format(internalFormat);
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if (!proxy) {
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MEMCPY(texObj->Palette, table->Data, table->Width*table->Components);
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if (ctx->Driver.UpdateTexturePalette) {
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(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
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}
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}
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}
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void gl_ColorSubTable( GLcontext *ctx, GLenum target,
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GLsizei start, struct gl_image *data )
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{
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/* XXX TODO */
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gl_problem(ctx, "glColorSubTableEXT not implemented");
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}
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void gl_GetColorTable( GLcontext *ctx, GLenum target, GLenum format,
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GLenum type, GLvoid *table )
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{
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glGetBooleanv" );
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return;
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}
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switch (target) {
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case GL_TEXTURE_1D:
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break;
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case GL_TEXTURE_2D:
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break;
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case GL_TEXTURE_3D_EXT:
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break;
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default:
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gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableEXT(target)");
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return;
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}
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gl_problem(ctx, "glGetColorTableEXT not implemented!");
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}
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void gl_GetColorTableParameterfv( GLcontext *ctx, GLenum target,
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GLenum pname, GLfloat *params )
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{
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GLint iparams[10];
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gl_GetColorTableParameteriv( ctx, target, pname, iparams );
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*params = (GLfloat) iparams[0];
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}
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void gl_GetColorTableParameteriv( GLcontext *ctx, GLenum target,
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GLenum pname, GLint *params )
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{
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struct gl_texture_object *texObj;
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glGetColorTableParameter" );
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return;
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}
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switch (target) {
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case GL_TEXTURE_1D:
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texObj = ctx->Texture.Current1D;
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break;
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case GL_TEXTURE_2D:
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texObj = ctx->Texture.Current2D;
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break;
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default:
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gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
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return;
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}
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switch (pname) {
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case GL_COLOR_TABLE_FORMAT_EXT:
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if (texObj)
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*params = texObj->PaletteIntFormat;
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break;
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case GL_COLOR_TABLE_WIDTH_EXT:
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if (texObj)
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*params = texObj->PaletteSize;
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break;
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case GL_COLOR_TABLE_RED_SIZE_EXT:
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*params = 8;
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break;
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case GL_COLOR_TABLE_GREEN_SIZE_EXT:
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*params = 8;
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break;
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case GL_COLOR_TABLE_BLUE_SIZE_EXT:
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*params = 8;
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break;
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case GL_COLOR_TABLE_ALPHA_SIZE_EXT:
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*params = 8;
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break;
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case GL_COLOR_TABLE_LUMINANCE_SIZE_EXT:
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*params = 8;
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break;
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case GL_COLOR_TABLE_INTENSITY_SIZE_EXT:
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*params = 8;
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break;
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default:
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gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter" );
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return;
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}
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}
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