diff options
author | jtg <jtg> | 1999-08-19 00:55:39 +0000 |
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committer | jtg <jtg> | 1999-08-19 00:55:39 +0000 |
commit | afb833d4e89c312460a4ab9ed6a7a8ca4ebbfe1c (patch) | |
tree | 59d65b4da12fb5379224cf5f6b808fde91523c7f /src/mesa/main/colortab.c | |
parent | f2544d4920ce168bec9cd94d774b7ea5103a3d74 (diff) |
Initial revision
Diffstat (limited to 'src/mesa/main/colortab.c')
-rw-r--r-- | src/mesa/main/colortab.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c new file mode 100644 index 00000000000..22d785ba515 --- /dev/null +++ b/src/mesa/main/colortab.c @@ -0,0 +1,312 @@ +/* $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; + } +} + + |