/* $Id: colortab.c,v 1.9 2000/02/28 20:38:37 brianp Exp $ */ /* * Mesa 3-D graphics library * Version: 3.3 * * Copyright (C) 1999-2000 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 "glheader.h" #include "colortab.h" #include "context.h" #include "image.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 _mesa_ColorTable( GLenum target, GLenum internalFormat, GLsizei width, GLenum format, GLenum type, const GLvoid *table ) { GET_CURRENT_CONTEXT(ctx); struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_object *texObj; struct gl_color_table *palette; GLboolean proxy = GL_FALSE; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glColorTable"); switch (target) { case GL_TEXTURE_1D: texObj = texUnit->CurrentD[1]; palette = &texObj->Palette; break; case GL_TEXTURE_2D: texObj = texUnit->CurrentD[2]; palette = &texObj->Palette; break; case GL_TEXTURE_3D: texObj = texUnit->CurrentD[3]; palette = &texObj->Palette; break; case GL_PROXY_TEXTURE_1D: texObj = ctx->Texture.Proxy1D; palette = &texObj->Palette; proxy = GL_TRUE; break; case GL_PROXY_TEXTURE_2D: texObj = ctx->Texture.Proxy2D; palette = &texObj->Palette; proxy = GL_TRUE; break; case GL_PROXY_TEXTURE_3D: texObj = ctx->Texture.Proxy3D; palette = &texObj->Palette; proxy = GL_TRUE; break; case GL_SHARED_TEXTURE_PALETTE_EXT: texObj = NULL; palette = &ctx->Texture.Palette; break; default: gl_error(ctx, GL_INVALID_ENUM, "glColorTable(target)"); return; } assert(palette); if (!gl_is_legal_format_and_type(format, type)) { gl_error(ctx, GL_INVALID_ENUM, "glColorTable(format or type)"); return; } if (decode_internal_format(internalFormat) < 0) { gl_error( ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)" ); return; } if (width < 1 || width > MAX_TEXTURE_PALETTE_SIZE || !power_of_two(width)) { gl_error(ctx, GL_INVALID_VALUE, "glColorTable(width)"); if (proxy) { palette->Size = 0; palette->IntFormat = (GLenum) 0; palette->Format = (GLenum) 0; } return; } palette->Size = width; palette->IntFormat = internalFormat; palette->Format = (GLenum) decode_internal_format(internalFormat); if (!proxy) { _mesa_unpack_ubyte_color_span(ctx, width, palette->Format, palette->Table, /* dest */ format, type, table, &ctx->Unpack, GL_FALSE); } if (texObj) { /* per-texture object palette */ if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, texObj ); } } else { /* shared texture palette */ if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, NULL ); } } } void _mesa_ColorSubTable( GLenum target, GLsizei start, GLsizei count, GLenum format, GLenum type, const GLvoid *table ) { GET_CURRENT_CONTEXT(ctx); struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_texture_object *texObj; struct gl_color_table *palette; GLint comps; GLubyte *dest; ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glColorSubTable"); switch (target) { case GL_TEXTURE_1D: texObj = texUnit->CurrentD[1]; palette = &texObj->Palette; break; case GL_TEXTURE_2D: texObj = texUnit->CurrentD[2]; palette = &texObj->Palette; break; case GL_TEXTURE_3D: texObj = texUnit->CurrentD[3]; palette = &texObj->Palette; break; case GL_SHARED_TEXTURE_PALETTE_EXT: texObj = NULL; palette = &ctx->Texture.Palette; break; default: gl_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)"); return; } assert(palette); if (!gl_is_legal_format_and_type(format, type)) { gl_error(ctx, GL_INVALID_ENUM, "glColorSubTable(format or type)"); return; } if (count < 1) { gl_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)"); return; } comps = gl_components_in_format(format); assert(comps > 0); /* error should be caught sooner */ if (start + count > palette->Size) { gl_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)"); return; } dest = palette->Table + start * comps * sizeof(GLubyte); _mesa_unpack_ubyte_color_span(ctx, count, palette->Format, dest, format, type, table, &ctx->Unpack, GL_FALSE); if (texObj) { /* per-texture object palette */ if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, texObj ); } } else { /* shared texture palette */ if (ctx->Driver.UpdateTexturePalette) { (*ctx->Driver.UpdateTexturePalette)( ctx, NULL ); } } } void _mesa_GetColorTable( GLenum target, GLenum format, GLenum type, GLvoid *table ) { GET_CURRENT_CONTEXT(ctx); struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_color_table *palette; GLubyte rgba[MAX_TEXTURE_PALETTE_SIZE][4]; GLint i; ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetColorTable"); switch (target) { case GL_TEXTURE_1D: palette = &texUnit->CurrentD[1]->Palette; break; case GL_TEXTURE_2D: palette = &texUnit->CurrentD[2]->Palette; break; case GL_TEXTURE_3D: palette = &texUnit->CurrentD[3]->Palette; break; case GL_SHARED_TEXTURE_PALETTE_EXT: palette = &ctx->Texture.Palette; break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)"); return; } assert(palette); switch (palette->Format) { case GL_ALPHA: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = 0; rgba[i][GCOMP] = 0; rgba[i][BCOMP] = 0; rgba[i][ACOMP] = palette->Table[i]; } break; case GL_LUMINANCE: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = palette->Table[i]; rgba[i][GCOMP] = palette->Table[i]; rgba[i][BCOMP] = palette->Table[i]; rgba[i][ACOMP] = 255; } break; case GL_LUMINANCE_ALPHA: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = palette->Table[i*2+0]; rgba[i][GCOMP] = palette->Table[i*2+0]; rgba[i][BCOMP] = palette->Table[i*2+0]; rgba[i][ACOMP] = palette->Table[i*2+1]; } break; case GL_INTENSITY: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = palette->Table[i]; rgba[i][GCOMP] = palette->Table[i]; rgba[i][BCOMP] = palette->Table[i]; rgba[i][ACOMP] = 255; } break; case GL_RGB: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = palette->Table[i*3+0]; rgba[i][GCOMP] = palette->Table[i*3+1]; rgba[i][BCOMP] = palette->Table[i*3+2]; rgba[i][ACOMP] = 255; } break; case GL_RGBA: for (i = 0; i < palette->Size; i++) { rgba[i][RCOMP] = palette->Table[i*4+0]; rgba[i][GCOMP] = palette->Table[i*4+1]; rgba[i][BCOMP] = palette->Table[i*4+2]; rgba[i][ACOMP] = palette->Table[i*4+3]; } break; default: gl_problem(ctx, "bad palette format in glGetColorTable"); return; } gl_pack_rgba_span(ctx, palette->Size, (const GLubyte (*)[]) rgba, format, type, table, &ctx->Pack, GL_FALSE); (void) format; (void) type; (void) table; } void _mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params ) { GLint iparams[10]; _mesa_GetColorTableParameteriv( target, pname, iparams ); *params = (GLfloat) iparams[0]; } void _mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params ) { GET_CURRENT_CONTEXT(ctx); struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit]; struct gl_color_table *palette; ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetColorTableParameter"); switch (target) { case GL_TEXTURE_1D: palette = &texUnit->CurrentD[1]->Palette; break; case GL_TEXTURE_2D: palette = &texUnit->CurrentD[2]->Palette; break; case GL_TEXTURE_3D: palette = &texUnit->CurrentD[3]->Palette; break; case GL_PROXY_TEXTURE_1D: palette = &ctx->Texture.Proxy1D->Palette; break; case GL_PROXY_TEXTURE_2D: palette = &ctx->Texture.Proxy2D->Palette; break; case GL_PROXY_TEXTURE_3D: palette = &ctx->Texture.Proxy3D->Palette; break; case GL_SHARED_TEXTURE_PALETTE_EXT: palette = &ctx->Texture.Palette; break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)"); return; } switch (pname) { case GL_COLOR_TABLE_FORMAT: *params = palette->IntFormat; break; case GL_COLOR_TABLE_WIDTH: *params = palette->Size; break; case GL_COLOR_TABLE_RED_SIZE: *params = 8; break; case GL_COLOR_TABLE_GREEN_SIZE: *params = 8; break; case GL_COLOR_TABLE_BLUE_SIZE: *params = 8; break; case GL_COLOR_TABLE_ALPHA_SIZE: *params = 8; break; case GL_COLOR_TABLE_LUMINANCE_SIZE: *params = 8; break; case GL_COLOR_TABLE_INTENSITY_SIZE: *params = 8; break; default: gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter" ); return; } }