BUFFER_BIT_COLOR7)
+/** The pixel transfer path has three color tables: */
+/*@{*/
+#define COLORTABLE_PRECONVOLUTION 0
+#define COLORTABLE_POSTCONVOLUTION 1
+#define COLORTABLE_POSTCOLORMATRIX 2
+#define COLORTABLE_MAX 3
+/*@}*/
/**
GLboolean Blend;
GLbitfield ClipPlanes;
GLboolean ColorMaterial;
- GLboolean ColorTable; /* SGI_color_table */
- GLboolean PostColorMatrixColorTable; /* SGI_color_table */
- GLboolean PostConvolutionColorTable; /* SGI_color_table */
+ GLboolean ColorTable[COLORTABLE_MAX];
GLboolean Convolution1D;
GLboolean Convolution2D;
GLboolean Separable2D;
};
+/**
+ * A pixelmap (see glPixelMap)
+ */
+struct gl_pixelmap
+{
+ GLint Size;
+ GLfloat Map[MAX_PIXEL_MAP_TABLE];
+ GLubyte Map8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */
+};
+
+
+/**
+ * Collection of all pixelmaps
+ */
+struct gl_pixelmaps
+{
+ struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */
+ struct gl_pixelmap GtoG;
+ struct gl_pixelmap BtoB;
+ struct gl_pixelmap AtoA;
+ struct gl_pixelmap ItoR;
+ struct gl_pixelmap ItoG;
+ struct gl_pixelmap ItoB;
+ struct gl_pixelmap ItoA;
+ struct gl_pixelmap ItoI;
+ struct gl_pixelmap StoS;
+};
+
+
/**
* Pixel attribute group (GL_PIXEL_MODE_BIT).
*/
struct gl_pixel_attrib
{
GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */
+
+ /*--- Begin Pixel Transfer State ---*/
+ /* Fields are in the order in which they're applied... */
+
+ /* Scale & Bias (index shift, offset) */
GLfloat RedBias, RedScale;
GLfloat GreenBias, GreenScale;
GLfloat BlueBias, BlueScale;
GLfloat AlphaBias, AlphaScale;
GLfloat DepthBias, DepthScale;
GLint IndexShift, IndexOffset;
+
+ /* Pixel Maps */
+ /* Note: actual pixel maps are not part of this attrib group */
GLboolean MapColorFlag;
GLboolean MapStencilFlag;
- GLfloat ZoomX, ZoomY;
- /* XXX move these out of gl_pixel_attrib */
- GLint MapStoSsize; /**< Size of each pixel map */
- GLint MapItoIsize;
- GLint MapItoRsize;
- GLint MapItoGsize;
- GLint MapItoBsize;
- GLint MapItoAsize;
- GLint MapRtoRsize;
- GLint MapGtoGsize;
- GLint MapBtoBsize;
- GLint MapAtoAsize;
- GLint MapStoS[MAX_PIXEL_MAP_TABLE]; /**< Pixel map tables */
- GLfloat MapItoI[MAX_PIXEL_MAP_TABLE];
- GLfloat MapItoR[MAX_PIXEL_MAP_TABLE];
- GLfloat MapItoG[MAX_PIXEL_MAP_TABLE];
- GLfloat MapItoB[MAX_PIXEL_MAP_TABLE];
- GLfloat MapItoA[MAX_PIXEL_MAP_TABLE];
- GLubyte MapItoR8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */
- GLubyte MapItoG8[MAX_PIXEL_MAP_TABLE];
- GLubyte MapItoB8[MAX_PIXEL_MAP_TABLE];
- GLubyte MapItoA8[MAX_PIXEL_MAP_TABLE];
- GLfloat MapRtoR[MAX_PIXEL_MAP_TABLE];
- GLfloat MapGtoG[MAX_PIXEL_MAP_TABLE];
- GLfloat MapBtoB[MAX_PIXEL_MAP_TABLE];
- GLfloat MapAtoA[MAX_PIXEL_MAP_TABLE];
- /** GL_EXT_histogram */
- GLboolean HistogramEnabled;
- GLboolean MinMaxEnabled;
- /** GL_SGI_color_matrix */
- GLfloat PostColorMatrixScale[4]; /**< RGBA */
- GLfloat PostColorMatrixBias[4]; /**< RGBA */
- /** GL_SGI_color_table */
- GLfloat ColorTableScale[4];
- GLfloat ColorTableBias[4];
- GLboolean ColorTableEnabled;
- GLfloat PCCTscale[4];
- GLfloat PCCTbias[4];
- GLboolean PostConvolutionColorTableEnabled;
- GLfloat PCMCTscale[4];
- GLfloat PCMCTbias[4];
- GLboolean PostColorMatrixColorTableEnabled;
- /** GL_SGI_texture_color_table */
- GLfloat TextureColorTableScale[4];
- GLfloat TextureColorTableBias[4];
- /** Convolution */
+
+ /* There are multiple color table stages: */
+ GLboolean ColorTableEnabled[COLORTABLE_MAX];
+ GLfloat ColorTableScale[COLORTABLE_MAX][4]; /**< RGBA */
+ GLfloat ColorTableBias[COLORTABLE_MAX][4]; /**< RGBA */
+
+ /* Convolution (GL_EXT_convolution) */
GLboolean Convolution1DEnabled;
GLboolean Convolution2DEnabled;
GLboolean Separable2DEnabled;
GLfloat ConvolutionBorderColor[3][4];
GLenum ConvolutionBorderMode[3];
- GLfloat ConvolutionFilterScale[3][4];
- GLfloat ConvolutionFilterBias[3][4];
+ GLfloat ConvolutionFilterScale[3][4]; /**< RGBA */
+ GLfloat ConvolutionFilterBias[3][4]; /**< RGBA */
GLfloat PostConvolutionScale[4]; /**< RGBA */
GLfloat PostConvolutionBias[4]; /**< RGBA */
+
+ /* Color matrix (GL_SGI_color_matrix) */
+ /* Note: the color matrix is not part of this attrib group */
+ GLfloat PostColorMatrixScale[4]; /**< RGBA */
+ GLfloat PostColorMatrixBias[4]; /**< RGBA */
+
+ /* Histogram & minmax (GL_EXT_histogram) */
+ /* Note: histogram and minmax data are not part of this attrib group */
+ GLboolean HistogramEnabled;
+ GLboolean MinMaxEnabled;
+
+ /*--- End Pixel Transfer State ---*/
+
+ /* Pixel Zoom */
+ GLfloat ZoomX, ZoomY;
+
+ /** GL_SGI_texture_color_table */
+ GLfloat TextureColorTableScale[4];
+ GLfloat TextureColorTableBias[4];
};
GLubyte IndexBits;
GLubyte DepthBits;
GLubyte StencilBits;
- GLvoid *Data;
+ GLvoid *Data; /**< This may not be used by some kinds of RBs */
/* Used to wrap one renderbuffer around another: */
struct gl_renderbuffer *Wrapped;
#define IMAGE_HISTOGRAM_BIT 0x200
#define IMAGE_MIN_MAX_BIT 0x400
#define IMAGE_CLAMP_BIT 0x800 /* extra */
-#define IMAGE_RED_TO_LUMINANCE 0x1000
/** Pixel Transfer ops up to convolution */
/** \name Other assorted state (not pushed/popped on attribute stack) */
/*@{*/
+ struct gl_pixelmaps PixelMaps;
struct gl_histogram_attrib Histogram;
struct gl_minmax_attrib MinMax;
struct gl_convolution_attrib Convolution1D;
struct gl_feedback Feedback; /**< Feedback */
struct gl_selection Select; /**< Selection */
- struct gl_color_table ColorTable; /**< Pre-convolution */
- struct gl_color_table ProxyColorTable; /**< Pre-convolution */
+ struct gl_color_table ColorTable[COLORTABLE_MAX];
+ struct gl_color_table ProxyColorTable[COLORTABLE_MAX];
+#if 0
struct gl_color_table PostConvolutionColorTable;
struct gl_color_table ProxyPostConvolutionColorTable;
struct gl_color_table PostColorMatrixColorTable;
struct gl_color_table ProxyPostColorMatrixColorTable;
+#endif
struct gl_program_state Program; /**< for vertex or fragment progs */
struct gl_vertex_program_state VertexProgram; /**< GL_ARB/NV_vertex_program */
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