colortab.c File Reference

#include "colortab.h"
#include "context.h"
#include "macros.h"

Include dependency graph for colortab.c:

Go to the source code of this file.

Functions
static GLboolean	power_of_two (GLint k)
static GLint	decode_internal_format (GLint format)
void	gl_ColorTable (GLcontext *ctx, GLenum target, GLenum internalFormat, struct gl_image *table)
void	gl_ColorSubTable (GLcontext *ctx, GLenum target, GLsizei start, struct gl_image *data)
void	gl_GetColorTable (GLcontext *ctx, GLenum target, GLenum format, GLenum type, GLvoid *table)
void	gl_GetColorTableParameterfv (GLcontext *ctx, GLenum target, GLenum pname, GLfloat *params)
void	gl_GetColorTableParameteriv (GLcontext *ctx, GLenum target, GLenum pname, GLint *params)

Function Documentation

decode_internal_format()

static GLint decode_internal_format ( GLint  format )

static

Definition at line 72 of file colortab.c.

{
   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 */
   }
}

Referenced by gl_ColorTable().

gl_ColorSubTable()

void gl_ColorSubTable	(	GLcontext *	ctx,
		GLenum	target,
		GLsizei	start,
		struct gl_image *	data
	)

Definition at line 187 of file colortab.c.

{
   /* XXX TODO */
   gl_problem(ctx, "glColorSubTableEXT not implemented");
}

Referenced by execute_list(), and init_exec_pointers().

gl_ColorTable()

void gl_ColorTable	(	GLcontext *	ctx,
		GLenum	target,
		GLenum	internalFormat,
		struct gl_image *	table
	)

Definition at line 129 of file colortab.c.

{
   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 );
     }
   }
}

Referenced by execute_list(), and init_exec_pointers().

gl_GetColorTable()

void gl_GetColorTable	(	GLcontext *	ctx,
		GLenum	target,
		GLenum	format,
		GLenum	type,
		GLvoid *	table
	)

Definition at line 196 of file colortab.c.

{
   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!");
}

Referenced by init_dlist_pointers(), and init_exec_pointers().

gl_GetColorTableParameterfv()

void gl_GetColorTableParameterfv	(	GLcontext *	ctx,
		GLenum	target,
		GLenum	pname,
		GLfloat *	params
	)

Definition at line 221 of file colortab.c.

{
   GLint iparams[10];
 
   gl_GetColorTableParameteriv( ctx, target, pname, iparams );
   *params = (GLfloat) iparams[0];
}

gl_GetColorTableParameteriv()

void gl_GetColorTableParameteriv	(	GLcontext *	ctx,
		GLenum	target,
		GLenum	pname,
		GLint *	params
	)

Definition at line 232 of file colortab.c.

{
   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;
   }
}

Referenced by gl_GetColorTableParameterfv(), init_dlist_pointers(), and init_exec_pointers().

power_of_two()

static GLboolean power_of_two ( GLint  k )

static

Definition at line 60 of file colortab.c.

{
   GLint i, m = 1;
   for (i=0; i<32; i++) {
      if (k == m)
         return GL_TRUE;
      m = m << 1;
   }
   return GL_FALSE;
}

Referenced by gl_ColorTable().