-/* $Id: s_context.h,v 1.16 2002/02/02 21:40:33 brianp Exp $ */
+/* $Id: s_context.h,v 1.22 2002/10/29 20:29:00 brianp Exp $ */
/*
* Mesa 3-D graphics library
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
- * Keith Whitwell <keithw@valinux.com>
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+/**
+ * \file swrast/s_context.h
+ * \brief fill in description
+ * \author Keith Whitwell <keith@tungstengraphics.com>
*/
#ifndef S_CONTEXT_H
const SWvertex *, const SWvertex *);
-
-/*
- * Bitmasks to indicate which rasterization options are enabled (RasterMask)
+/** \defgroup Bitmasks
+ * Bitmasks to indicate which rasterization options are enabled
+ * (RasterMask)
*/
-#define ALPHATEST_BIT 0x001 /* Alpha-test pixels */
-#define BLEND_BIT 0x002 /* Blend pixels */
-#define DEPTH_BIT 0x004 /* Depth-test pixels */
-#define FOG_BIT 0x008 /* Fog pixels */
-#define LOGIC_OP_BIT 0x010 /* Apply logic op in software */
-#define CLIP_BIT 0x020 /* Scissor or window clip pixels */
-#define STENCIL_BIT 0x040 /* Stencil pixels */
-#define MASKING_BIT 0x080 /* Do glColorMask or glIndexMask */
-#define ALPHABUF_BIT 0x100 /* Using software alpha buffer */
-#define MULTI_DRAW_BIT 0x400 /* Write to more than one color- */
- /* buffer or no buffers. */
-#define OCCLUSION_BIT 0x800 /* GL_HP_occlusion_test enabled */
-#define TEXTURE_BIT 0x1000 /* Texturing really enabled */
-
+/*@{*/
+#define ALPHATEST_BIT 0x001 /**< Alpha-test pixels */
+#define BLEND_BIT 0x002 /**< Blend pixels */
+#define DEPTH_BIT 0x004 /**< Depth-test pixels */
+#define FOG_BIT 0x008 /**< Fog pixels */
+#define LOGIC_OP_BIT 0x010 /**< Apply logic op in software */
+#define CLIP_BIT 0x020 /**< Scissor or window clip pixels */
+#define STENCIL_BIT 0x040 /**< Stencil pixels */
+#define MASKING_BIT 0x080 /**< Do glColorMask or glIndexMask */
+#define ALPHABUF_BIT 0x100 /**< Using software alpha buffer */
+#define MULTI_DRAW_BIT 0x400 /**< Write to more than one color- */
+ /**< buffer or no buffers. */
+#define OCCLUSION_BIT 0x800 /**< GL_HP_occlusion_test enabled */
+#define TEXTURE_BIT 0x1000 /**< Texturing really enabled */
+/*@}*/
#define _SWRAST_NEW_RASTERMASK (_NEW_BUFFERS| \
_NEW_SCISSOR| \
_NEW_DEPTH)
-
+/**
+ * \struct SWcontext
+ * \brief SWContext?
+ */
typedef struct
{
- /* Driver interface:
+ /** Driver interface:
*/
struct swrast_device_driver Driver;
- /* Configuration mechanisms to make software rasterizer match
+ /** Configuration mechanisms to make software rasterizer match
* characteristics of the hardware rasterizer (if present):
*/
GLboolean AllowVertexFog;
GLboolean AllowPixelFog;
- /* Derived values, invalidated on statechanges, updated from
+ /** Derived values, invalidated on statechanges, updated from
* _swrast_validate_derived():
*/
GLuint _RasterMask;
GLfloat _MinMagThresh[MAX_TEXTURE_UNITS];
GLfloat _backface_sign;
GLboolean _PreferPixelFog;
+ GLboolean _AnyTextureCombine;
/* Accum buffer temporaries.
*/
- GLboolean _IntegerAccumMode; /* Storing unscaled integers? */
- GLfloat _IntegerAccumScaler; /* Implicit scale factor */
+ GLboolean _IntegerAccumMode; /**< Storing unscaled integers? */
+ GLfloat _IntegerAccumScaler; /**< Implicit scale factor */
/* Working values:
*/
- GLuint StippleCounter; /* Line stipple counter */
+ GLuint StippleCounter; /**< Line stipple counter */
GLuint NewState;
GLuint StateChanges;
+ GLenum Primitive; /* current primitive being drawn (ala glBegin) */
+ GLuint CurrentBuffer; /* exactly one of FRONT_LEFT_BIT, BACK_LEFT_BIT, etc*/
-
- /* Mechanism to allow driver (like X11) to register further
+ /** Mechanism to allow driver (like X11) to register further
* software rasterization routines.
*/
+ /*@{*/
void (*choose_point)( GLcontext * );
void (*choose_line)( GLcontext * );
void (*choose_triangle)( GLcontext * );
GLuint invalidate_point;
GLuint invalidate_line;
GLuint invalidate_triangle;
+ /*@}*/
-
- /* Function pointers for dispatch behind public entrypoints.
- */
+ /** Function pointers for dispatch behind public entrypoints. */
+ /*@{*/
void (*InvalidateState)( GLcontext *ctx, GLuint new_state );
swrast_point_func Point;
swrast_line_func Line;
swrast_tri_func Triangle;
+ /*@}*/
- /* Placeholders for when separate specular (or secondary color) is
+ /**
+ * Placeholders for when separate specular (or secondary color) is
* enabled but texturing is not.
*/
+ /*@{*/
swrast_point_func SpecPoint;
swrast_line_func SpecLine;
swrast_tri_func SpecTriangle;
+ /*@}*/
+ /**
+ * Typically, we'll allocate a sw_span structure as a local variable
+ * and set its 'array' pointer to point to this object. The reason is
+ * this object is big and causes problems when allocated on the stack
+ * on some systems.
+ */
+ struct span_arrays *SpanArrays;
- /* Internal hooks, kept uptodate by the same mechanism as above.
+ /**
+ * Used to buffer N GL_POINTS, instead of rendering one by one.
+ */
+ struct sw_span PointSpan;
+
+ /** Internal hooks, kept uptodate by the same mechanism as above.
*/
blend_func BlendFunc;
TextureSampleFunc TextureSample[MAX_TEXTURE_UNITS];
+ /** Buffer for saving the sampled texture colors.
+ * Needed for GL_ARB_texture_env_crossbar implementation.
+ */
+ GLchan *TexelBuffer;
+
} SWcontext;
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