/* $Id: colortab.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */ /* * Mesa 3-D graphics library * Version: 3.1 * * Copyright (C) 1999 Brian Paul All Rights Reserved. * * 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. */ #ifdef PC_HEADER #include "all.h" #else #include "colortab.h" #include "context.h" #include "macros.h" #ifdef XFree86Server #include "GL/xf86glx.h" #endif #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_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_object *texObj; GLboolean proxy = GL_FALSE; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glColorTable"); if (decode_internal_format(internalFormat) < 0) { gl_error( ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)" ); return; } switch (target) { case GL_TEXTURE_1D: texObj = texUnit->CurrentD[1]; break; case GL_TEXTURE_2D: texObj = texUnit->CurrentD[2]; break; case GL_TEXTURE_3D_EXT: texObj = texUnit->CurrentD[3]; 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; case GL_PROXY_TEXTURE_3D_EXT: texObj = ctx->Texture.Proxy3D; proxy = GL_TRUE; break; case GL_SHARED_TEXTURE_PALETTE_EXT: texObj = NULL; 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 = (GLenum) 0; texObj->PaletteFormat = (GLenum) 0; } return; } if (texObj) { /* per-texture object palette */ texObj->PaletteSize = table->Width; texObj->PaletteIntFormat = internalFormat; texObj->PaletteFormat = (GLenum) decode_internal_format(internalFormat); if (!proxy) { MEMCPY(texObj->Palette, table->Data, table->Width*table->Components); if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, texObj ); } } } else { /* shared texture palette */ ctx->Texture.PaletteSize = table->Width; ctx->Texture.PaletteIntFormat = internalFormat; ctx->Texture.PaletteFormat = (GLenum) decode_internal_format(internalFormat); MEMCPY(ctx->Texture.Palette, table->Data, table->Width*table->Components); if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, NULL ); } } } void gl_ColorSubTable( GLcontext *ctx, GLenum target, GLsizei start, struct gl_image *data ) { /* XXX TODO */ gl_problem(ctx, "glColorSubTableEXT not implemented"); (void) target; (void) start; (void) data; } void gl_GetColorTable( GLcontext *ctx, GLenum target, GLenum format, GLenum type, GLvoid *table ) { ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetBooleanv"); switch (target) { case GL_TEXTURE_1D: break; case GL_TEXTURE_2D: break; case GL_TEXTURE_3D_EXT: break; case GL_SHARED_TEXTURE_PALETTE_EXT: break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableEXT(target)"); return; } gl_problem(ctx, "glGetColorTableEXT not implemented!"); (void) format; (void) type; (void) table; } 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_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_object *texObj; ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetColorTableParameter"); switch (target) { case GL_TEXTURE_1D: texObj = texUnit->CurrentD[1]; break; case GL_TEXTURE_2D: texObj = texUnit->CurrentD[2]; break; case GL_TEXTURE_3D_EXT: texObj = texUnit->CurrentD[3]; break; case GL_SHARED_TEXTURE_PALETTE_EXT: texObj = NULL; break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)"); return; } switch (pname) { case GL_COLOR_TABLE_FORMAT_EXT: if (texObj) *params = texObj->PaletteIntFormat; else *params = ctx->Texture.PaletteIntFormat; break; case GL_COLOR_TABLE_WIDTH_EXT: if (texObj) *params = texObj->PaletteSize; else *params = ctx->Texture.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; } }