mirror of
https://github.com/reactos/reactos.git
synced 2024-08-25 04:38:43 +00:00
288 lines
7 KiB
C
288 lines
7 KiB
C
![]() |
/* $Id: colortab.c,v 1.6 1997/10/16 02:26:18 brianp Exp $ */
|
||
|
|
||
|
/*
|
||
|
* Mesa 3-D graphics library
|
||
|
* Version: 2.5
|
||
|
* Copyright (C) 1995-1997 Brian Paul
|
||
|
*
|
||
|
* This library is free software; you can redistribute it and/or
|
||
|
* modify it under the terms of the GNU Library General Public
|
||
|
* License as published by the Free Software Foundation; either
|
||
|
* version 2 of the License, or (at your option) any later version.
|
||
|
*
|
||
|
* This library is distributed in the hope that it will be useful,
|
||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
* Library General Public License for more details.
|
||
|
*
|
||
|
* You should have received a copy of the GNU Library General Public
|
||
|
* License along with this library; if not, write to the Free
|
||
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
*/
|
||
|
|
||
|
|
||
|
/*
|
||
|
* $Log: colortab.c,v $
|
||
|
* Revision 1.6 1997/10/16 02:26:18 brianp
|
||
|
* call Driver.UpdateTexturePalette(ctx,NULL) when shared palette changed
|
||
|
*
|
||
|
* Revision 1.5 1997/10/16 01:59:08 brianp
|
||
|
* added GL_EXT_shared_texture_palette extension
|
||
|
*
|
||
|
* Revision 1.4 1997/10/15 23:37:05 brianp
|
||
|
* removed dirty flag stuff
|
||
|
*
|
||
|
* Revision 1.3 1997/10/13 23:50:03 brianp
|
||
|
* added call to Driver.UpdateTexturePalette
|
||
|
*
|
||
|
* Revision 1.2 1997/09/29 23:27:44 brianp
|
||
|
* updated for new device driver texture functions
|
||
|
*
|
||
|
* Revision 1.1 1997/09/27 00:12:46 brianp
|
||
|
* Initial revision
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
|
||
|
#ifdef PC_HEADER
|
||
|
#include "all.h"
|
||
|
#else
|
||
|
#include "colortab.h"
|
||
|
#include "context.h"
|
||
|
#include "macros.h"
|
||
|
#endif
|
||
|
|
||
|
|
||
|
|
||
|
/*
|
||
|
* Return GL_TRUE if k is a power of two, else return GL_FALSE.
|
||
|
*/
|
||
|
static GLboolean power_of_two( GLint k )
|
||
|
{
|
||
|
GLint i, m = 1;
|
||
|
for (i=0; i<32; i++) {
|
||
|
if (k == m)
|
||
|
return GL_TRUE;
|
||
|
m = m << 1;
|
||
|
}
|
||
|
return GL_FALSE;
|
||
|
}
|
||
|
|
||
|
|
||
|
static GLint decode_internal_format( GLint format )
|
||
|
{
|
||
|
switch (format) {
|
||
|
case GL_ALPHA:
|
||
|
case GL_ALPHA4:
|
||
|
case GL_ALPHA8:
|
||
|
case GL_ALPHA12:
|
||
|
case GL_ALPHA16:
|
||
|
return GL_ALPHA;
|
||
|
case 1:
|
||
|
case GL_LUMINANCE:
|
||
|
case GL_LUMINANCE4:
|
||
|
case GL_LUMINANCE8:
|
||
|
case GL_LUMINANCE12:
|
||
|
case GL_LUMINANCE16:
|
||
|
return GL_LUMINANCE;
|
||
|
case 2:
|
||
|
case GL_LUMINANCE_ALPHA:
|
||
|
case GL_LUMINANCE4_ALPHA4:
|
||
|
case GL_LUMINANCE6_ALPHA2:
|
||
|
case GL_LUMINANCE8_ALPHA8:
|
||
|
case GL_LUMINANCE12_ALPHA4:
|
||
|
case GL_LUMINANCE12_ALPHA12:
|
||
|
case GL_LUMINANCE16_ALPHA16:
|
||
|
return GL_LUMINANCE_ALPHA;
|
||
|
case GL_INTENSITY:
|
||
|
case GL_INTENSITY4:
|
||
|
case GL_INTENSITY8:
|
||
|
case GL_INTENSITY12:
|
||
|
case GL_INTENSITY16:
|
||
|
return GL_INTENSITY;
|
||
|
case 3:
|
||
|
case GL_RGB:
|
||
|
case GL_R3_G3_B2:
|
||
|
case GL_RGB4:
|
||
|
case GL_RGB5:
|
||
|
case GL_RGB8:
|
||
|
case GL_RGB10:
|
||
|
case GL_RGB12:
|
||
|
case GL_RGB16:
|
||
|
return GL_RGB;
|
||
|
case 4:
|
||
|
case GL_RGBA:
|
||
|
case GL_RGBA2:
|
||
|
case GL_RGBA4:
|
||
|
case GL_RGB5_A1:
|
||
|
case GL_RGBA8:
|
||
|
case GL_RGB10_A2:
|
||
|
case GL_RGBA12:
|
||
|
case GL_RGBA16:
|
||
|
return GL_RGBA;
|
||
|
default:
|
||
|
return -1; /* error */
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
void gl_ColorTable( GLcontext *ctx, GLenum target,
|
||
|
GLenum internalFormat, struct gl_image *table )
|
||
|
{
|
||
|
struct gl_texture_object *texObj;
|
||
|
GLboolean proxy = GL_FALSE;
|
||
|
|
||
|
if (INSIDE_BEGIN_END(ctx)) {
|
||
|
gl_error( ctx, GL_INVALID_OPERATION, "glGetBooleanv" );
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
switch (target) {
|
||
|
case GL_TEXTURE_1D:
|
||
|
texObj = ctx->Texture.Current1D;
|
||
|
break;
|
||
|
case GL_TEXTURE_2D:
|
||
|
texObj = ctx->Texture.Current2D;
|
||
|
break;
|
||
|
case GL_PROXY_TEXTURE_1D:
|
||
|
texObj = ctx->Texture.Proxy1D;
|
||
|
proxy = GL_TRUE;
|
||
|
break;
|
||
|
case GL_PROXY_TEXTURE_2D:
|
||
|
texObj = ctx->Texture.Proxy2D;
|
||
|
proxy = GL_TRUE;
|
||
|
break;
|
||
|
default:
|
||
|
gl_error(ctx, GL_INVALID_ENUM, "glColorTableEXT(target)");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* internalformat = just like glTexImage */
|
||
|
|
||
|
if (table->Width < 1 || table->Width > MAX_TEXTURE_PALETTE_SIZE
|
||
|
|| !power_of_two(table->Width)) {
|
||
|
gl_error(ctx, GL_INVALID_VALUE, "glColorTableEXT(width)");
|
||
|
if (proxy) {
|
||
|
texObj->PaletteSize = 0;
|
||
|
texObj->PaletteIntFormat = 0;
|
||
|
texObj->PaletteFormat = 0;
|
||
|
}
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* per-texture object palette */
|
||
|
texObj->PaletteSize = table->Width;
|
||
|
texObj->PaletteIntFormat = internalFormat;
|
||
|
texObj->PaletteFormat = decode_internal_format(internalFormat);
|
||
|
if (!proxy) {
|
||
|
MEMCPY(texObj->Palette, table->Data, table->Width*table->Components);
|
||
|
if (ctx->Driver.UpdateTexturePalette) {
|
||
|
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
void gl_ColorSubTable( GLcontext *ctx, GLenum target,
|
||
|
GLsizei start, struct gl_image *data )
|
||
|
{
|
||
|
/* XXX TODO */
|
||
|
gl_problem(ctx, "glColorSubTableEXT not implemented");
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
void gl_GetColorTable( GLcontext *ctx, GLenum target, GLenum format,
|
||
|
GLenum type, GLvoid *table )
|
||
|
{
|
||
|
if (INSIDE_BEGIN_END(ctx)) {
|
||
|
gl_error( ctx, GL_INVALID_OPERATION, "glGetBooleanv" );
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
switch (target) {
|
||
|
case GL_TEXTURE_1D:
|
||
|
break;
|
||
|
case GL_TEXTURE_2D:
|
||
|
break;
|
||
|
case GL_TEXTURE_3D_EXT:
|
||
|
break;
|
||
|
default:
|
||
|
gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableEXT(target)");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
gl_problem(ctx, "glGetColorTableEXT not implemented!");
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
void gl_GetColorTableParameterfv( GLcontext *ctx, GLenum target,
|
||
|
GLenum pname, GLfloat *params )
|
||
|
{
|
||
|
GLint iparams[10];
|
||
|
|
||
|
gl_GetColorTableParameteriv( ctx, target, pname, iparams );
|
||
|
*params = (GLfloat) iparams[0];
|
||
|
}
|
||
|
|
||
|
|
||
|
|
||
|
void gl_GetColorTableParameteriv( GLcontext *ctx, GLenum target,
|
||
|
GLenum pname, GLint *params )
|
||
|
{
|
||
|
struct gl_texture_object *texObj;
|
||
|
|
||
|
if (INSIDE_BEGIN_END(ctx)) {
|
||
|
gl_error( ctx, GL_INVALID_OPERATION, "glGetColorTableParameter" );
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
switch (target) {
|
||
|
case GL_TEXTURE_1D:
|
||
|
texObj = ctx->Texture.Current1D;
|
||
|
break;
|
||
|
case GL_TEXTURE_2D:
|
||
|
texObj = ctx->Texture.Current2D;
|
||
|
break;
|
||
|
default:
|
||
|
gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
switch (pname) {
|
||
|
case GL_COLOR_TABLE_FORMAT_EXT:
|
||
|
if (texObj)
|
||
|
*params = texObj->PaletteIntFormat;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_WIDTH_EXT:
|
||
|
if (texObj)
|
||
|
*params = texObj->PaletteSize;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_RED_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_GREEN_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_BLUE_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_ALPHA_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_LUMINANCE_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
case GL_COLOR_TABLE_INTENSITY_SIZE_EXT:
|
||
|
*params = 8;
|
||
|
break;
|
||
|
default:
|
||
|
gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter" );
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|