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-rw-r--r--mesalib/src/mesa/tnl/t_context.h1093
-rw-r--r--mesalib/src/mesa/tnl/t_vb_cliptmp.h640
2 files changed, 866 insertions, 867 deletions
diff --git a/mesalib/src/mesa/tnl/t_context.h b/mesalib/src/mesa/tnl/t_context.h
index 9fd5c99bb..36b104354 100644
--- a/mesalib/src/mesa/tnl/t_context.h
+++ b/mesalib/src/mesa/tnl/t_context.h
@@ -1,547 +1,546 @@
-/*
- * mesa 3-D graphics library
- * Version: 6.5
- *
- * Copyright (C) 1999-2006 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.
- */
-
-/**
- * \file t_context.h
- * \brief TnL module datatypes and definitions.
- * \author Keith Whitwell
- */
-
-
-/**
- * \mainpage The TNL-module
- *
- * TNL stands for "transform and lighting", i.e. this module implements
- * a pipeline that receives as input a buffer of vertices and does all
- * necessary transformations (rotations, clipping, vertex shader etc.)
- * and passes then the output to the rasterizer.
- *
- * The tnl_pipeline contains the array of all stages, which should be
- * applied. Each stage is a black-box, which is described by an
- * tnl_pipeline_stage. The function ::_tnl_run_pipeline applies all the
- * stages to the vertex_buffer TNLcontext::vb, where the vertex data
- * is stored. The last stage in the pipeline is the rasterizer.
- *
- */
-
-
-#ifndef _T_CONTEXT_H
-#define _T_CONTEXT_H
-
-#include "main/glheader.h"
-#include "main/bitset.h"
-#include "main/mtypes.h"
-
-#include "math/m_vector.h"
-
-#include "vbo/vbo.h"
-
-#define MAX_PIPELINE_STAGES 30
-
-/*
- * Note: The first attributes match the VERT_ATTRIB_* definitions
- * in mtypes.h. However, the tnl module has additional attributes
- * for materials, color indexes, edge flags, etc.
- */
-/* Although it's nice to use these as bit indexes in a DWORD flag, we
- * could manage without if necessary. Another limit currently is the
- * number of bits allocated for these numbers in places like vertex
- * program instruction formats and register layouts.
- */
-/* The bit space exhaustion is a fact now, done by _TNL_ATTRIB_ATTRIBUTE* for
- * GLSL vertex shader which cannot be aliased with conventional vertex attribs.
- * Compacting _TNL_ATTRIB_MAT_* attribs would not work, they would not give
- * as many free bits (11 plus already 1 free bit) as _TNL_ATTRIB_ATTRIBUTE*
- * attribs want (16).
- */
-enum {
- _TNL_ATTRIB_POS = 0,
- _TNL_ATTRIB_WEIGHT = 1,
- _TNL_ATTRIB_NORMAL = 2,
- _TNL_ATTRIB_COLOR0 = 3,
- _TNL_ATTRIB_COLOR1 = 4,
- _TNL_ATTRIB_FOG = 5,
- _TNL_ATTRIB_COLOR_INDEX = 6,
- _TNL_ATTRIB_EDGEFLAG = 7,
- _TNL_ATTRIB_TEX0 = 8,
- _TNL_ATTRIB_TEX1 = 9,
- _TNL_ATTRIB_TEX2 = 10,
- _TNL_ATTRIB_TEX3 = 11,
- _TNL_ATTRIB_TEX4 = 12,
- _TNL_ATTRIB_TEX5 = 13,
- _TNL_ATTRIB_TEX6 = 14,
- _TNL_ATTRIB_TEX7 = 15,
-
- _TNL_ATTRIB_GENERIC0 = 16, /* doesn't really exist! */
- _TNL_ATTRIB_GENERIC1 = 17,
- _TNL_ATTRIB_GENERIC2 = 18,
- _TNL_ATTRIB_GENERIC3 = 19,
- _TNL_ATTRIB_GENERIC4 = 20,
- _TNL_ATTRIB_GENERIC5 = 21,
- _TNL_ATTRIB_GENERIC6 = 22,
- _TNL_ATTRIB_GENERIC7 = 23,
- _TNL_ATTRIB_GENERIC8 = 24,
- _TNL_ATTRIB_GENERIC9 = 25,
- _TNL_ATTRIB_GENERIC10 = 26,
- _TNL_ATTRIB_GENERIC11 = 27,
- _TNL_ATTRIB_GENERIC12 = 28,
- _TNL_ATTRIB_GENERIC13 = 29,
- _TNL_ATTRIB_GENERIC14 = 30,
- _TNL_ATTRIB_GENERIC15 = 31,
-
- /* These alias with the generics, but they are not active
- * concurrently, so it's not a problem. The TNL module
- * doesn't have to do anything about this as this is how they
- * are passed into the _draw_prims callback.
- *
- * When we generate fixed-function replacement programs (in
- * t_vp_build.c currently), they refer to the appropriate
- * generic attribute in order to pick up per-vertex material
- * data.
- */
- _TNL_ATTRIB_MAT_FRONT_AMBIENT = 16,
- _TNL_ATTRIB_MAT_BACK_AMBIENT = 17,
- _TNL_ATTRIB_MAT_FRONT_DIFFUSE = 18,
- _TNL_ATTRIB_MAT_BACK_DIFFUSE = 19,
- _TNL_ATTRIB_MAT_FRONT_SPECULAR = 20,
- _TNL_ATTRIB_MAT_BACK_SPECULAR = 21,
- _TNL_ATTRIB_MAT_FRONT_EMISSION = 22,
- _TNL_ATTRIB_MAT_BACK_EMISSION = 23,
- _TNL_ATTRIB_MAT_FRONT_SHININESS = 24,
- _TNL_ATTRIB_MAT_BACK_SHININESS = 25,
- _TNL_ATTRIB_MAT_FRONT_INDEXES = 26,
- _TNL_ATTRIB_MAT_BACK_INDEXES = 27,
-
- /* This is really a VERT_RESULT, not an attrib. Need to fix
- * tnl to understand the difference.
- */
- _TNL_ATTRIB_POINTSIZE = 16,
-
- _TNL_ATTRIB_MAX = 32
-} ;
-
-#define _TNL_ATTRIB_TEX(u) (_TNL_ATTRIB_TEX0 + (u))
-#define _TNL_ATTRIB_GENERIC(n) (_TNL_ATTRIB_GENERIC0 + (n))
-
-/* special index used for handing invalid glVertexAttribute() indices */
-#define _TNL_ATTRIB_ERROR (_TNL_ATTRIB_GENERIC15 + 1)
-
-/**
- * Handy attribute ranges:
- */
-#define _TNL_FIRST_PROG _TNL_ATTRIB_WEIGHT
-#define _TNL_LAST_PROG _TNL_ATTRIB_TEX7
-
-#define _TNL_FIRST_TEX _TNL_ATTRIB_TEX0
-#define _TNL_LAST_TEX _TNL_ATTRIB_TEX7
-
-#define _TNL_FIRST_GENERIC _TNL_ATTRIB_GENERIC0
-#define _TNL_LAST_GENERIC _TNL_ATTRIB_GENERIC15
-
-#define _TNL_FIRST_MAT _TNL_ATTRIB_MAT_FRONT_AMBIENT /* GENERIC0 */
-#define _TNL_LAST_MAT _TNL_ATTRIB_MAT_BACK_INDEXES /* GENERIC11 */
-
-/* Number of available generic attributes */
-#define _TNL_NUM_GENERIC 16
-
-/* Number of attributes used for evaluators */
-#define _TNL_NUM_EVAL 16
-
-
-#define PRIM_BEGIN 0x10
-#define PRIM_END 0x20
-#define PRIM_MODE_MASK 0x0f
-
-static INLINE GLuint _tnl_translate_prim( const struct _mesa_prim *prim )
-{
- GLuint flag;
- flag = prim->mode;
- if (prim->begin) flag |= PRIM_BEGIN;
- if (prim->end) flag |= PRIM_END;
- return flag;
-}
-
-
-
-
-/**
- * Contains the current state of a running pipeline.
- */
-struct vertex_buffer
-{
- GLuint Size; /**< Max vertices per vertex buffer, constant */
-
- /* Constant over the pipeline.
- */
- GLuint Count; /**< Number of vertices currently in buffer */
-
- /* Pointers to current data. Most of the data is in AttribPtr -- all of
- * it that is one of VERT_ATTRIB_X. For things only produced by TNL,
- * such as backface color or eye-space coordinates, they are stored
- * here.
- */
- GLuint *Elts;
- GLvector4f *EyePtr; /* _TNL_BIT_POS */
- GLvector4f *ClipPtr; /* _TNL_BIT_POS */
- GLvector4f *NdcPtr; /* _TNL_BIT_POS */
- GLubyte ClipOrMask; /* _TNL_BIT_POS */
- GLubyte ClipAndMask; /* _TNL_BIT_POS */
- GLubyte *ClipMask; /* _TNL_BIT_POS */
- GLfloat *NormalLengthPtr; /* _TNL_BIT_NORMAL */
- GLboolean *EdgeFlag; /* _TNL_BIT_EDGEFLAG */
- GLvector4f *BackfaceIndexPtr;
- GLvector4f *BackfaceColorPtr;
- GLvector4f *BackfaceSecondaryColorPtr;
-
- const struct _mesa_prim *Primitive;
- GLuint PrimitiveCount;
-
- /* Inputs to the vertex program stage */
- GLvector4f *AttribPtr[_TNL_ATTRIB_MAX]; /* GL_NV_vertex_program */
-};
-
-
-/**
- * Describes an individual operation on the pipeline.
- */
-struct tnl_pipeline_stage
-{
- const char *name;
-
- /* Private data for the pipeline stage:
- */
- void *privatePtr;
-
- /* Allocate private data
- */
- GLboolean (*create)( struct gl_context *ctx, struct tnl_pipeline_stage * );
-
- /* Free private data.
- */
- void (*destroy)( struct tnl_pipeline_stage * );
-
- /* Called on any statechange or input array size change or
- * input array change to/from zero stride.
- */
- void (*validate)( struct gl_context *ctx, struct tnl_pipeline_stage * );
-
- /* Called from _tnl_run_pipeline(). The stage.changed_inputs value
- * encodes all inputs to thee struct which have changed. If
- * non-zero, recompute all affected outputs of the stage, otherwise
- * execute any 'sideeffects' of the stage.
- *
- * Return value: GL_TRUE - keep going
- * GL_FALSE - finished pipeline
- */
- GLboolean (*run)( struct gl_context *ctx, struct tnl_pipeline_stage * );
-};
-
-
-
-/** Contains the array of all pipeline stages.
- * The default values are defined at the end of t_pipeline.c
- */
-struct tnl_pipeline {
-
- GLuint last_attrib_stride[_TNL_ATTRIB_MAX];
- GLuint last_attrib_size[_TNL_ATTRIB_MAX];
- GLuint input_changes;
- GLuint new_state;
-
- struct tnl_pipeline_stage stages[MAX_PIPELINE_STAGES+1];
- GLuint nr_stages;
-};
-
-struct tnl_clipspace;
-struct tnl_clipspace_attr;
-
-typedef void (*tnl_extract_func)( const struct tnl_clipspace_attr *a,
- GLfloat *out,
- const GLubyte *v );
-
-typedef void (*tnl_insert_func)( const struct tnl_clipspace_attr *a,
- GLubyte *v,
- const GLfloat *in );
-
-typedef void (*tnl_emit_func)( struct gl_context *ctx,
- GLuint count,
- GLubyte *dest );
-
-
-/**
- * Describes how to convert/move a vertex attribute from a vertex array
- * to a vertex structure.
- */
-struct tnl_clipspace_attr
-{
- GLuint attrib; /* which vertex attrib (0=position, etc) */
- GLuint format;
- GLuint vertoffset; /* position of the attrib in the vertex struct */
- GLuint vertattrsize; /* size of the attribute in bytes */
- GLubyte *inputptr;
- GLuint inputstride;
- GLuint inputsize;
- const tnl_insert_func *insert;
- tnl_insert_func emit;
- tnl_extract_func extract;
- const GLfloat *vp; /* NDC->Viewport mapping matrix */
-};
-
-
-
-
-typedef void (*tnl_points_func)( struct gl_context *ctx, GLuint first, GLuint last );
-typedef void (*tnl_line_func)( struct gl_context *ctx, GLuint v1, GLuint v2 );
-typedef void (*tnl_triangle_func)( struct gl_context *ctx,
- GLuint v1, GLuint v2, GLuint v3 );
-typedef void (*tnl_quad_func)( struct gl_context *ctx, GLuint v1, GLuint v2,
- GLuint v3, GLuint v4 );
-typedef void (*tnl_render_func)( struct gl_context *ctx, GLuint start, GLuint count,
- GLuint flags );
-typedef void (*tnl_interp_func)( struct gl_context *ctx,
- GLfloat t, GLuint dst, GLuint out, GLuint in,
- GLboolean force_boundary );
-typedef void (*tnl_copy_pv_func)( struct gl_context *ctx, GLuint dst, GLuint src );
-typedef void (*tnl_setup_func)( struct gl_context *ctx,
- GLuint start, GLuint end,
- GLuint new_inputs);
-
-
-struct tnl_attr_type {
- GLuint format;
- GLuint size;
- GLuint stride;
- GLuint offset;
-};
-
-struct tnl_clipspace_fastpath {
- GLuint vertex_size;
- GLuint attr_count;
- GLboolean match_strides;
-
- struct tnl_attr_type *attr;
-
- tnl_emit_func func;
- struct tnl_clipspace_fastpath *next;
-};
-
-/**
- * Used to describe conversion of vertex arrays to vertex structures.
- * I.e. Structure of arrays to arrays of structs.
- */
-struct tnl_clipspace
-{
- GLboolean need_extras;
-
- GLuint new_inputs;
-
- GLubyte *vertex_buf;
- GLuint vertex_size;
- GLuint max_vertex_size;
-
- struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];
- GLuint attr_count;
-
- tnl_emit_func emit;
- tnl_interp_func interp;
- tnl_copy_pv_func copy_pv;
-
- /* Parameters and constants for codegen:
- */
- GLboolean need_viewport;
- GLfloat vp_scale[4];
- GLfloat vp_xlate[4];
- GLfloat chan_scale[4];
- GLfloat identity[4];
-
- struct tnl_clipspace_fastpath *fastpath;
-
- void (*codegen_emit)( struct gl_context *ctx );
-};
-
-
-struct tnl_device_driver
-{
- /***
- *** TNL Pipeline
- ***/
-
- void (*RunPipeline)(struct gl_context *ctx);
- /* Replaces PipelineStart/PipelineFinish -- intended to allow
- * drivers to wrap _tnl_run_pipeline() with code to validate state
- * and grab/release hardware locks.
- */
-
- void (*NotifyMaterialChange)(struct gl_context *ctx);
- /* Alert tnl-aware drivers of changes to material.
- */
-
- /***
- *** Rendering -- These functions called only from t_vb_render.c
- ***/
- struct
- {
- void (*Start)(struct gl_context *ctx);
- void (*Finish)(struct gl_context *ctx);
- /* Called before and after all rendering operations, including DrawPixels,
- * ReadPixels, Bitmap, span functions, and CopyTexImage, etc commands.
- * These are a suitable place for grabbing/releasing hardware locks.
- */
-
- void (*PrimitiveNotify)(struct gl_context *ctx, GLenum mode);
- /* Called between RenderStart() and RenderFinish() to indicate the
- * type of primitive we're about to draw. Mode will be one of the
- * modes accepted by glBegin().
- */
-
- tnl_interp_func Interp;
- /* The interp function is called by the clipping routines when we need
- * to generate an interpolated vertex. All pertinant vertex ancilliary
- * data should be computed by interpolating between the 'in' and 'out'
- * vertices.
- */
-
- tnl_copy_pv_func CopyPV;
- /* The copy function is used to make a copy of a vertex. All pertinant
- * vertex attributes should be copied.
- */
-
- void (*ClippedPolygon)( struct gl_context *ctx, const GLuint *elts, GLuint n );
- /* Render a polygon with <n> vertices whose indexes are in the <elts>
- * array.
- */
-
- void (*ClippedLine)( struct gl_context *ctx, GLuint v0, GLuint v1 );
- /* Render a line between the two vertices given by indexes v0 and v1. */
-
- tnl_points_func Points; /* must now respect vb->elts */
- tnl_line_func Line;
- tnl_triangle_func Triangle;
- tnl_quad_func Quad;
- /* These functions are called in order to render points, lines,
- * triangles and quads. These are only called via the T&L module.
- */
-
- tnl_render_func *PrimTabVerts;
- tnl_render_func *PrimTabElts;
- /* Render whole unclipped primitives (points, lines, linestrips,
- * lineloops, etc). The tables are indexed by the GL enum of the
- * primitive to be rendered. RenderTabVerts is used for non-indexed
- * arrays of vertices. RenderTabElts is used for indexed arrays of
- * vertices.
- */
-
- void (*ResetLineStipple)( struct gl_context *ctx );
- /* Reset the hardware's line stipple counter.
- */
-
- tnl_setup_func BuildVertices;
- /* This function is called whenever new vertices are required for
- * rendering. The vertices in question are those n such that start
- * <= n < end. The new_inputs parameter indicates those fields of
- * the vertex which need to be updated, if only a partial repair of
- * the vertex is required.
- *
- * This function is called only from _tnl_render_stage in tnl/t_render.c.
- */
-
-
- GLboolean (*Multipass)( struct gl_context *ctx, GLuint passno );
- /* Driver may request additional render passes by returning GL_TRUE
- * when this function is called. This function will be called
- * after the first pass, and passes will be made until the function
- * returns GL_FALSE. If no function is registered, only one pass
- * is made.
- *
- * This function will be first invoked with passno == 1.
- */
- } Render;
-};
-
-
-#define DECLARE_RENDERINPUTS(name) BITSET64_DECLARE(name, _TNL_ATTRIB_MAX)
-#define RENDERINPUTS_COPY BITSET64_COPY
-#define RENDERINPUTS_EQUAL BITSET64_EQUAL
-#define RENDERINPUTS_ZERO BITSET64_ZERO
-#define RENDERINPUTS_ONES BITSET64_ONES
-#define RENDERINPUTS_TEST BITSET64_TEST
-#define RENDERINPUTS_SET BITSET64_SET
-#define RENDERINPUTS_CLEAR BITSET64_CLEAR
-#define RENDERINPUTS_TEST_RANGE BITSET64_TEST_RANGE
-#define RENDERINPUTS_SET_RANGE BITSET64_SET_RANGE
-#define RENDERINPUTS_CLEAR_RANGE BITSET64_CLEAR_RANGE
-
-
-/**
- * Context state for T&L context.
- */
-typedef struct
-{
- /* Driver interface.
- */
- struct tnl_device_driver Driver;
-
- /* Pipeline
- */
- struct tnl_pipeline pipeline;
- struct vertex_buffer vb;
-
- /* Clipspace/ndc/window vertex managment:
- */
- struct tnl_clipspace clipspace;
-
- /* Probably need a better configuration mechanism:
- */
- GLboolean NeedNdcCoords;
- GLboolean AllowVertexFog;
- GLboolean AllowPixelFog;
- GLboolean _DoVertexFog; /* eval fog function at each vertex? */
-
- DECLARE_RENDERINPUTS(render_inputs_bitset);
-
- GLvector4f tmp_inputs[VERT_ATTRIB_MAX];
-
- /* Temp storage for t_draw.c:
- */
- GLubyte *block[VERT_ATTRIB_MAX];
- GLuint nr_blocks;
-
- GLuint CurInstance;
-
-} TNLcontext;
-
-
-
-#define TNL_CONTEXT(ctx) ((TNLcontext *)((ctx)->swtnl_context))
-
-
-#define TYPE_IDX(t) ((t) & 0xf)
-#define MAX_TYPES TYPE_IDX(GL_DOUBLE)+1 /* 0xa + 1 */
-
-
-extern void
-tnl_clip_prepare(struct gl_context *ctx);
-
-
-#endif
+/*
+ * mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 1999-2006 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.
+ */
+
+/**
+ * \file t_context.h
+ * \brief TnL module datatypes and definitions.
+ * \author Keith Whitwell
+ */
+
+
+/**
+ * \mainpage The TNL-module
+ *
+ * TNL stands for "transform and lighting", i.e. this module implements
+ * a pipeline that receives as input a buffer of vertices and does all
+ * necessary transformations (rotations, clipping, vertex shader etc.)
+ * and passes then the output to the rasterizer.
+ *
+ * The tnl_pipeline contains the array of all stages, which should be
+ * applied. Each stage is a black-box, which is described by an
+ * tnl_pipeline_stage. The function ::_tnl_run_pipeline applies all the
+ * stages to the vertex_buffer TNLcontext::vb, where the vertex data
+ * is stored. The last stage in the pipeline is the rasterizer.
+ *
+ */
+
+
+#ifndef _T_CONTEXT_H
+#define _T_CONTEXT_H
+
+#include "main/glheader.h"
+#include "main/bitset.h"
+#include "main/mtypes.h"
+
+#include "math/m_vector.h"
+
+#include "vbo/vbo.h"
+
+#define MAX_PIPELINE_STAGES 30
+
+/*
+ * Note: The first attributes match the VERT_ATTRIB_* definitions
+ * in mtypes.h. However, the tnl module has additional attributes
+ * for materials, color indexes, edge flags, etc.
+ */
+/* Although it's nice to use these as bit indexes in a DWORD flag, we
+ * could manage without if necessary. Another limit currently is the
+ * number of bits allocated for these numbers in places like vertex
+ * program instruction formats and register layouts.
+ */
+/* The bit space exhaustion is a fact now, done by _TNL_ATTRIB_ATTRIBUTE* for
+ * GLSL vertex shader which cannot be aliased with conventional vertex attribs.
+ * Compacting _TNL_ATTRIB_MAT_* attribs would not work, they would not give
+ * as many free bits (11 plus already 1 free bit) as _TNL_ATTRIB_ATTRIBUTE*
+ * attribs want (16).
+ */
+enum {
+ _TNL_ATTRIB_POS = 0,
+ _TNL_ATTRIB_WEIGHT = 1,
+ _TNL_ATTRIB_NORMAL = 2,
+ _TNL_ATTRIB_COLOR0 = 3,
+ _TNL_ATTRIB_COLOR1 = 4,
+ _TNL_ATTRIB_FOG = 5,
+ _TNL_ATTRIB_COLOR_INDEX = 6,
+ _TNL_ATTRIB_EDGEFLAG = 7,
+ _TNL_ATTRIB_TEX0 = 8,
+ _TNL_ATTRIB_TEX1 = 9,
+ _TNL_ATTRIB_TEX2 = 10,
+ _TNL_ATTRIB_TEX3 = 11,
+ _TNL_ATTRIB_TEX4 = 12,
+ _TNL_ATTRIB_TEX5 = 13,
+ _TNL_ATTRIB_TEX6 = 14,
+ _TNL_ATTRIB_TEX7 = 15,
+
+ _TNL_ATTRIB_GENERIC0 = 17, /* doesn't really exist! */
+ _TNL_ATTRIB_GENERIC1 = 18,
+ _TNL_ATTRIB_GENERIC2 = 19,
+ _TNL_ATTRIB_GENERIC3 = 20,
+ _TNL_ATTRIB_GENERIC4 = 21,
+ _TNL_ATTRIB_GENERIC5 = 22,
+ _TNL_ATTRIB_GENERIC6 = 23,
+ _TNL_ATTRIB_GENERIC7 = 24,
+ _TNL_ATTRIB_GENERIC8 = 25,
+ _TNL_ATTRIB_GENERIC9 = 26,
+ _TNL_ATTRIB_GENERIC10 = 27,
+ _TNL_ATTRIB_GENERIC11 = 28,
+ _TNL_ATTRIB_GENERIC12 = 29,
+ _TNL_ATTRIB_GENERIC13 = 30,
+ _TNL_ATTRIB_GENERIC14 = 31,
+ _TNL_ATTRIB_GENERIC15 = 32,
+
+ /* These alias with the generics, but they are not active
+ * concurrently, so it's not a problem. The TNL module
+ * doesn't have to do anything about this as this is how they
+ * are passed into the _draw_prims callback.
+ *
+ * When we generate fixed-function replacement programs (in
+ * t_vp_build.c currently), they refer to the appropriate
+ * generic attribute in order to pick up per-vertex material
+ * data.
+ */
+ _TNL_ATTRIB_MAT_FRONT_AMBIENT = 17,
+ _TNL_ATTRIB_MAT_BACK_AMBIENT = 18,
+ _TNL_ATTRIB_MAT_FRONT_DIFFUSE = 19,
+ _TNL_ATTRIB_MAT_BACK_DIFFUSE = 20,
+ _TNL_ATTRIB_MAT_FRONT_SPECULAR = 21,
+ _TNL_ATTRIB_MAT_BACK_SPECULAR = 22,
+ _TNL_ATTRIB_MAT_FRONT_EMISSION = 23,
+ _TNL_ATTRIB_MAT_BACK_EMISSION = 24,
+ _TNL_ATTRIB_MAT_FRONT_SHININESS = 25,
+ _TNL_ATTRIB_MAT_BACK_SHININESS = 26,
+ _TNL_ATTRIB_MAT_FRONT_INDEXES = 27,
+ _TNL_ATTRIB_MAT_BACK_INDEXES = 28,
+
+ /* This is really a VERT_RESULT, not an attrib. Need to fix
+ * tnl to understand the difference.
+ */
+ _TNL_ATTRIB_POINTSIZE = 16,
+
+ _TNL_ATTRIB_MAX = 33
+} ;
+
+#define _TNL_ATTRIB_TEX(u) (_TNL_ATTRIB_TEX0 + (u))
+#define _TNL_ATTRIB_GENERIC(n) (_TNL_ATTRIB_GENERIC0 + (n))
+
+/* special index used for handing invalid glVertexAttribute() indices */
+#define _TNL_ATTRIB_ERROR (_TNL_ATTRIB_GENERIC15 + 1)
+
+/**
+ * Handy attribute ranges:
+ */
+#define _TNL_FIRST_PROG _TNL_ATTRIB_WEIGHT
+#define _TNL_LAST_PROG _TNL_ATTRIB_TEX7
+
+#define _TNL_FIRST_TEX _TNL_ATTRIB_TEX0
+#define _TNL_LAST_TEX _TNL_ATTRIB_TEX7
+
+#define _TNL_FIRST_GENERIC _TNL_ATTRIB_GENERIC0
+#define _TNL_LAST_GENERIC _TNL_ATTRIB_GENERIC15
+
+#define _TNL_FIRST_MAT _TNL_ATTRIB_MAT_FRONT_AMBIENT /* GENERIC0 */
+#define _TNL_LAST_MAT _TNL_ATTRIB_MAT_BACK_INDEXES /* GENERIC11 */
+
+/* Number of available generic attributes */
+#define _TNL_NUM_GENERIC 16
+
+/* Number of attributes used for evaluators */
+#define _TNL_NUM_EVAL 16
+
+
+#define PRIM_BEGIN 0x10
+#define PRIM_END 0x20
+#define PRIM_MODE_MASK 0x0f
+
+static inline GLuint _tnl_translate_prim( const struct _mesa_prim *prim )
+{
+ GLuint flag;
+ flag = prim->mode;
+ if (prim->begin) flag |= PRIM_BEGIN;
+ if (prim->end) flag |= PRIM_END;
+ return flag;
+}
+
+
+
+
+/**
+ * Contains the current state of a running pipeline.
+ */
+struct vertex_buffer
+{
+ GLuint Size; /**< Max vertices per vertex buffer, constant */
+
+ /* Constant over the pipeline.
+ */
+ GLuint Count; /**< Number of vertices currently in buffer */
+
+ /* Pointers to current data. Most of the data is in AttribPtr -- all of
+ * it that is one of VERT_ATTRIB_X. For things only produced by TNL,
+ * such as backface color or eye-space coordinates, they are stored
+ * here.
+ */
+ GLuint *Elts;
+ GLvector4f *EyePtr; /* _TNL_BIT_POS */
+ GLvector4f *ClipPtr; /* _TNL_BIT_POS */
+ GLvector4f *NdcPtr; /* _TNL_BIT_POS */
+ GLubyte ClipOrMask; /* _TNL_BIT_POS */
+ GLubyte ClipAndMask; /* _TNL_BIT_POS */
+ GLubyte *ClipMask; /* _TNL_BIT_POS */
+ GLfloat *NormalLengthPtr; /* _TNL_BIT_NORMAL */
+ GLboolean *EdgeFlag; /* _TNL_BIT_EDGEFLAG */
+ GLvector4f *BackfaceIndexPtr;
+ GLvector4f *BackfaceColorPtr;
+ GLvector4f *BackfaceSecondaryColorPtr;
+
+ const struct _mesa_prim *Primitive;
+ GLuint PrimitiveCount;
+
+ /* Inputs to the vertex program stage */
+ GLvector4f *AttribPtr[_TNL_ATTRIB_MAX]; /* GL_NV_vertex_program */
+};
+
+
+/**
+ * Describes an individual operation on the pipeline.
+ */
+struct tnl_pipeline_stage
+{
+ const char *name;
+
+ /* Private data for the pipeline stage:
+ */
+ void *privatePtr;
+
+ /* Allocate private data
+ */
+ GLboolean (*create)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+
+ /* Free private data.
+ */
+ void (*destroy)( struct tnl_pipeline_stage * );
+
+ /* Called on any statechange or input array size change or
+ * input array change to/from zero stride.
+ */
+ void (*validate)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+
+ /* Called from _tnl_run_pipeline(). The stage.changed_inputs value
+ * encodes all inputs to thee struct which have changed. If
+ * non-zero, recompute all affected outputs of the stage, otherwise
+ * execute any 'sideeffects' of the stage.
+ *
+ * Return value: GL_TRUE - keep going
+ * GL_FALSE - finished pipeline
+ */
+ GLboolean (*run)( struct gl_context *ctx, struct tnl_pipeline_stage * );
+};
+
+
+
+/** Contains the array of all pipeline stages.
+ * The default values are defined at the end of t_pipeline.c
+ */
+struct tnl_pipeline {
+
+ GLuint last_attrib_stride[_TNL_ATTRIB_MAX];
+ GLuint last_attrib_size[_TNL_ATTRIB_MAX];
+ GLuint input_changes;
+ GLuint new_state;
+
+ struct tnl_pipeline_stage stages[MAX_PIPELINE_STAGES+1];
+ GLuint nr_stages;
+};
+
+struct tnl_clipspace;
+struct tnl_clipspace_attr;
+
+typedef void (*tnl_extract_func)( const struct tnl_clipspace_attr *a,
+ GLfloat *out,
+ const GLubyte *v );
+
+typedef void (*tnl_insert_func)( const struct tnl_clipspace_attr *a,
+ GLubyte *v,
+ const GLfloat *in );
+
+typedef void (*tnl_emit_func)( struct gl_context *ctx,
+ GLuint count,
+ GLubyte *dest );
+
+
+/**
+ * Describes how to convert/move a vertex attribute from a vertex array
+ * to a vertex structure.
+ */
+struct tnl_clipspace_attr
+{
+ GLuint attrib; /* which vertex attrib (0=position, etc) */
+ GLuint format;
+ GLuint vertoffset; /* position of the attrib in the vertex struct */
+ GLuint vertattrsize; /* size of the attribute in bytes */
+ GLubyte *inputptr;
+ GLuint inputstride;
+ GLuint inputsize;
+ const tnl_insert_func *insert;
+ tnl_insert_func emit;
+ tnl_extract_func extract;
+ const GLfloat *vp; /* NDC->Viewport mapping matrix */
+};
+
+
+
+
+typedef void (*tnl_points_func)( struct gl_context *ctx, GLuint first, GLuint last );
+typedef void (*tnl_line_func)( struct gl_context *ctx, GLuint v1, GLuint v2 );
+typedef void (*tnl_triangle_func)( struct gl_context *ctx,
+ GLuint v1, GLuint v2, GLuint v3 );
+typedef void (*tnl_quad_func)( struct gl_context *ctx, GLuint v1, GLuint v2,
+ GLuint v3, GLuint v4 );
+typedef void (*tnl_render_func)( struct gl_context *ctx, GLuint start, GLuint count,
+ GLuint flags );
+typedef void (*tnl_interp_func)( struct gl_context *ctx,
+ GLfloat t, GLuint dst, GLuint out, GLuint in,
+ GLboolean force_boundary );
+typedef void (*tnl_copy_pv_func)( struct gl_context *ctx, GLuint dst, GLuint src );
+typedef void (*tnl_setup_func)( struct gl_context *ctx,
+ GLuint start, GLuint end,
+ GLuint new_inputs);
+
+
+struct tnl_attr_type {
+ GLuint format;
+ GLuint size;
+ GLuint stride;
+ GLuint offset;
+};
+
+struct tnl_clipspace_fastpath {
+ GLuint vertex_size;
+ GLuint attr_count;
+ GLboolean match_strides;
+
+ struct tnl_attr_type *attr;
+
+ tnl_emit_func func;
+ struct tnl_clipspace_fastpath *next;
+};
+
+/**
+ * Used to describe conversion of vertex arrays to vertex structures.
+ * I.e. Structure of arrays to arrays of structs.
+ */
+struct tnl_clipspace
+{
+ GLboolean need_extras;
+
+ GLuint new_inputs;
+
+ GLubyte *vertex_buf;
+ GLuint vertex_size;
+ GLuint max_vertex_size;
+
+ struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];
+ GLuint attr_count;
+
+ tnl_emit_func emit;
+ tnl_interp_func interp;
+ tnl_copy_pv_func copy_pv;
+
+ /* Parameters and constants for codegen:
+ */
+ GLboolean need_viewport;
+ GLfloat vp_scale[4];
+ GLfloat vp_xlate[4];
+ GLfloat chan_scale[4];
+ GLfloat identity[4];
+
+ struct tnl_clipspace_fastpath *fastpath;
+
+ void (*codegen_emit)( struct gl_context *ctx );
+};
+
+
+struct tnl_device_driver
+{
+ /***
+ *** TNL Pipeline
+ ***/
+
+ void (*RunPipeline)(struct gl_context *ctx);
+ /* Replaces PipelineStart/PipelineFinish -- intended to allow
+ * drivers to wrap _tnl_run_pipeline() with code to validate state
+ * and grab/release hardware locks.
+ */
+
+ void (*NotifyMaterialChange)(struct gl_context *ctx);
+ /* Alert tnl-aware drivers of changes to material.
+ */
+
+ /***
+ *** Rendering -- These functions called only from t_vb_render.c
+ ***/
+ struct
+ {
+ void (*Start)(struct gl_context *ctx);
+ void (*Finish)(struct gl_context *ctx);
+ /* Called before and after all rendering operations, including DrawPixels,
+ * ReadPixels, Bitmap, span functions, and CopyTexImage, etc commands.
+ * These are a suitable place for grabbing/releasing hardware locks.
+ */
+
+ void (*PrimitiveNotify)(struct gl_context *ctx, GLenum mode);
+ /* Called between RenderStart() and RenderFinish() to indicate the
+ * type of primitive we're about to draw. Mode will be one of the
+ * modes accepted by glBegin().
+ */
+
+ tnl_interp_func Interp;
+ /* The interp function is called by the clipping routines when we need
+ * to generate an interpolated vertex. All pertinant vertex ancilliary
+ * data should be computed by interpolating between the 'in' and 'out'
+ * vertices.
+ */
+
+ tnl_copy_pv_func CopyPV;
+ /* The copy function is used to make a copy of a vertex. All pertinant
+ * vertex attributes should be copied.
+ */
+
+ void (*ClippedPolygon)( struct gl_context *ctx, const GLuint *elts, GLuint n );
+ /* Render a polygon with <n> vertices whose indexes are in the <elts>
+ * array.
+ */
+
+ void (*ClippedLine)( struct gl_context *ctx, GLuint v0, GLuint v1 );
+ /* Render a line between the two vertices given by indexes v0 and v1. */
+
+ tnl_points_func Points; /* must now respect vb->elts */
+ tnl_line_func Line;
+ tnl_triangle_func Triangle;
+ tnl_quad_func Quad;
+ /* These functions are called in order to render points, lines,
+ * triangles and quads. These are only called via the T&L module.
+ */
+
+ tnl_render_func *PrimTabVerts;
+ tnl_render_func *PrimTabElts;
+ /* Render whole unclipped primitives (points, lines, linestrips,
+ * lineloops, etc). The tables are indexed by the GL enum of the
+ * primitive to be rendered. RenderTabVerts is used for non-indexed
+ * arrays of vertices. RenderTabElts is used for indexed arrays of
+ * vertices.
+ */
+
+ void (*ResetLineStipple)( struct gl_context *ctx );
+ /* Reset the hardware's line stipple counter.
+ */
+
+ tnl_setup_func BuildVertices;
+ /* This function is called whenever new vertices are required for
+ * rendering. The vertices in question are those n such that start
+ * <= n < end. The new_inputs parameter indicates those fields of
+ * the vertex which need to be updated, if only a partial repair of
+ * the vertex is required.
+ *
+ * This function is called only from _tnl_render_stage in tnl/t_render.c.
+ */
+
+
+ GLboolean (*Multipass)( struct gl_context *ctx, GLuint passno );
+ /* Driver may request additional render passes by returning GL_TRUE
+ * when this function is called. This function will be called
+ * after the first pass, and passes will be made until the function
+ * returns GL_FALSE. If no function is registered, only one pass
+ * is made.
+ *
+ * This function will be first invoked with passno == 1.
+ */
+ } Render;
+};
+
+
+#define DECLARE_RENDERINPUTS(name) BITSET64_DECLARE(name, _TNL_ATTRIB_MAX)
+#define RENDERINPUTS_COPY BITSET64_COPY
+#define RENDERINPUTS_EQUAL BITSET64_EQUAL
+#define RENDERINPUTS_ZERO BITSET64_ZERO
+#define RENDERINPUTS_ONES BITSET64_ONES
+#define RENDERINPUTS_TEST BITSET64_TEST
+#define RENDERINPUTS_SET BITSET64_SET
+#define RENDERINPUTS_CLEAR BITSET64_CLEAR
+#define RENDERINPUTS_TEST_RANGE BITSET64_TEST_RANGE
+#define RENDERINPUTS_SET_RANGE BITSET64_SET_RANGE
+#define RENDERINPUTS_CLEAR_RANGE BITSET64_CLEAR_RANGE
+
+
+/**
+ * Context state for T&L context.
+ */
+typedef struct
+{
+ /* Driver interface.
+ */
+ struct tnl_device_driver Driver;
+
+ /* Pipeline
+ */
+ struct tnl_pipeline pipeline;
+ struct vertex_buffer vb;
+
+ /* Clipspace/ndc/window vertex managment:
+ */
+ struct tnl_clipspace clipspace;
+
+ /* Probably need a better configuration mechanism:
+ */
+ GLboolean NeedNdcCoords;
+ GLboolean AllowVertexFog;
+ GLboolean AllowPixelFog;
+ GLboolean _DoVertexFog; /* eval fog function at each vertex? */
+
+ DECLARE_RENDERINPUTS(render_inputs_bitset);
+
+ GLvector4f tmp_inputs[VERT_ATTRIB_MAX];
+
+ /* Temp storage for t_draw.c:
+ */
+ GLubyte *block[VERT_ATTRIB_MAX];
+ GLuint nr_blocks;
+
+ GLuint CurInstance;
+} TNLcontext;
+
+
+
+#define TNL_CONTEXT(ctx) ((TNLcontext *)((ctx)->swtnl_context))
+
+
+#define TYPE_IDX(t) ((t) & 0xf)
+#define MAX_TYPES TYPE_IDX(GL_DOUBLE)+1 /* 0xa + 1 */
+
+
+extern void
+tnl_clip_prepare(struct gl_context *ctx);
+
+
+#endif
diff --git a/mesalib/src/mesa/tnl/t_vb_cliptmp.h b/mesalib/src/mesa/tnl/t_vb_cliptmp.h
index b67aaddda..0b45bc534 100644
--- a/mesalib/src/mesa/tnl/t_vb_cliptmp.h
+++ b/mesalib/src/mesa/tnl/t_vb_cliptmp.h
@@ -1,320 +1,320 @@
-/*
- * Mesa 3-D graphics library
- * Version: 6.5.2
- *
- * Copyright (C) 1999-2006 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.
- *
- * Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
-
-
-#define CLIP_DOTPROD(K, A, B, C, D) X(K)*A + Y(K)*B + Z(K)*C + W(K)*D
-
-#define POLY_CLIP( PLANE_BIT, A, B, C, D ) \
-do { \
- if (mask & PLANE_BIT) { \
- GLuint idxPrev = inlist[0]; \
- GLfloat dpPrev = CLIP_DOTPROD(idxPrev, A, B, C, D ); \
- GLuint outcount = 0; \
- GLuint i; \
- \
- inlist[n] = inlist[0]; /* prevent rotation of vertices */ \
- for (i = 1; i <= n; i++) { \
- GLuint idx = inlist[i]; \
- GLfloat dp = CLIP_DOTPROD(idx, A, B, C, D ); \
- \
- if (!IS_NEGATIVE(dpPrev)) { \
- outlist[outcount++] = idxPrev; \
- } \
- \
- if (DIFFERENT_SIGNS(dp, dpPrev)) { \
- if (IS_NEGATIVE(dp)) { \
- /* Going out of bounds. Avoid division by zero as we \
- * know dp != dpPrev from DIFFERENT_SIGNS, above. \
- */ \
- GLfloat t = dp / (dp - dpPrev); \
- INTERP_4F( t, coord[newvert], coord[idx], coord[idxPrev]); \
- interp( ctx, t, newvert, idx, idxPrev, GL_TRUE ); \
- } else { \
- /* Coming back in. \
- */ \
- GLfloat t = dpPrev / (dpPrev - dp); \
- INTERP_4F( t, coord[newvert], coord[idxPrev], coord[idx]); \
- interp( ctx, t, newvert, idxPrev, idx, GL_FALSE ); \
- } \
- outlist[outcount++] = newvert++; \
- } \
- \
- idxPrev = idx; \
- dpPrev = dp; \
- } \
- \
- if (outcount < 3) \
- return; \
- \
- { \
- GLuint *tmp = inlist; \
- inlist = outlist; \
- outlist = tmp; \
- n = outcount; \
- } \
- } \
-} while (0)
-
-
-#define LINE_CLIP(PLANE_BIT, A, B, C, D ) \
-do { \
- if (mask & PLANE_BIT) { \
- const GLfloat dp0 = CLIP_DOTPROD( v0, A, B, C, D ); \
- const GLfloat dp1 = CLIP_DOTPROD( v1, A, B, C, D ); \
- const GLboolean neg_dp0 = IS_NEGATIVE(dp0); \
- const GLboolean neg_dp1 = IS_NEGATIVE(dp1); \
- \
- /* For regular clipping, we know from the clipmask that one \
- * (or both) of these must be negative (otherwise we wouldn't \
- * be here). \
- * For userclip, there is only a single bit for all active \
- * planes, so we can end up here when there is nothing to do, \
- * hence the second IS_NEGATIVE() test: \
- */ \
- if (neg_dp0 && neg_dp1) \
- return; /* both vertices outside clip plane: discard */ \
- \
- if (neg_dp1) { \
- GLfloat t = dp1 / (dp1 - dp0); \
- if (t > t1) t1 = t; \
- } else if (neg_dp0) { \
- GLfloat t = dp0 / (dp0 - dp1); \
- if (t > t0) t0 = t; \
- } \
- if (t0 + t1 >= 1.0) \
- return; /* discard */ \
- } \
-} while (0)
-
-
-
-/* Clip a line against the viewport and user clip planes.
- */
-static INLINE void
-TAG(clip_line)( struct gl_context *ctx, GLuint v0, GLuint v1, GLubyte mask )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- tnl_interp_func interp = tnl->Driver.Render.Interp;
- GLfloat (*coord)[4] = VB->ClipPtr->data;
- GLuint newvert = VB->Count;
- GLfloat t0 = 0;
- GLfloat t1 = 0;
- GLuint p;
- const GLuint v0_orig = v0;
-
- if (mask & CLIP_FRUSTUM_BITS) {
- LINE_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
- LINE_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
- LINE_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
- LINE_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
- LINE_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
- LINE_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
- }
-
- if (mask & CLIP_USER_BIT) {
- for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
- if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
- const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
- const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
- const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
- LINE_CLIP( CLIP_USER_BIT, a, b, c, d );
- }
- }
- }
-
- if (VB->ClipMask[v0]) {
- INTERP_4F( t0, coord[newvert], coord[v0], coord[v1] );
- interp( ctx, t0, newvert, v0, v1, GL_FALSE );
- v0 = newvert;
- newvert++;
- }
- else {
- ASSERT(t0 == 0.0);
- }
-
- /* Note: we need to use vertex v0_orig when computing the new
- * interpolated/clipped vertex position, not the current v0 which
- * may have got set when we clipped the other end of the line!
- */
- if (VB->ClipMask[v1]) {
- INTERP_4F( t1, coord[newvert], coord[v1], coord[v0_orig] );
- interp( ctx, t1, newvert, v1, v0_orig, GL_FALSE );
-
- if (ctx->Light.ShadeModel == GL_FLAT)
- tnl->Driver.Render.CopyPV( ctx, newvert, v1 );
-
- v1 = newvert;
-
- newvert++;
- }
- else {
- ASSERT(t1 == 0.0);
- }
-
- tnl->Driver.Render.ClippedLine( ctx, v0, v1 );
-}
-
-
-/* Clip a triangle against the viewport and user clip planes.
- */
-static INLINE void
-TAG(clip_tri)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLubyte mask )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- tnl_interp_func interp = tnl->Driver.Render.Interp;
- GLuint newvert = VB->Count;
- GLfloat (*coord)[4] = VB->ClipPtr->data;
- GLuint pv = v2;
- GLuint vlist[2][MAX_CLIPPED_VERTICES];
- GLuint *inlist = vlist[0], *outlist = vlist[1];
- GLuint p;
- GLuint n = 3;
-
- ASSIGN_3V(inlist, v2, v0, v1 ); /* pv rotated to slot zero */
-
- if (0) {
- /* print pre-clip vertex coords */
- GLuint i, j;
- printf("pre clip:\n");
- for (i = 0; i < n; i++) {
- j = inlist[i];
- printf(" %u: %u: %f, %f, %f, %f\n",
- i, j,
- coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
- assert(!IS_INF_OR_NAN(coord[j][0]));
- assert(!IS_INF_OR_NAN(coord[j][1]));
- assert(!IS_INF_OR_NAN(coord[j][2]));
- assert(!IS_INF_OR_NAN(coord[j][3]));
- }
- }
-
-
- if (mask & CLIP_FRUSTUM_BITS) {
- POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
- POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
- POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
- POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
- POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
- POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
- }
-
- if (mask & CLIP_USER_BIT) {
- for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
- if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
- const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
- const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
- const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
- POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
- }
- }
- }
-
- if (ctx->Light.ShadeModel == GL_FLAT) {
- if (pv != inlist[0]) {
- ASSERT( inlist[0] >= VB->Count );
- tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
- }
- }
-
- if (0) {
- /* print post-clip vertex coords */
- GLuint i, j;
- printf("post clip:\n");
- for (i = 0; i < n; i++) {
- j = inlist[i];
- printf(" %u: %u: %f, %f, %f, %f\n",
- i, j,
- coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
- }
- }
-
- tnl->Driver.Render.ClippedPolygon( ctx, inlist, n );
-}
-
-
-/* Clip a quad against the viewport and user clip planes.
- */
-static INLINE void
-TAG(clip_quad)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
- GLubyte mask )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- tnl_interp_func interp = tnl->Driver.Render.Interp;
- GLuint newvert = VB->Count;
- GLfloat (*coord)[4] = VB->ClipPtr->data;
- GLuint pv = v3;
- GLuint vlist[2][MAX_CLIPPED_VERTICES];
- GLuint *inlist = vlist[0], *outlist = vlist[1];
- GLuint p;
- GLuint n = 4;
-
- ASSIGN_4V(inlist, v3, v0, v1, v2 ); /* pv rotated to slot zero */
-
- if (mask & CLIP_FRUSTUM_BITS) {
- POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
- POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
- POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
- POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
- POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
- POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
- }
-
- if (mask & CLIP_USER_BIT) {
- for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
- if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
- const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
- const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
- const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
- const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
- POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
- }
- }
- }
-
- if (ctx->Light.ShadeModel == GL_FLAT) {
- if (pv != inlist[0]) {
- ASSERT( inlist[0] >= VB->Count );
- tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
- }
- }
-
- tnl->Driver.Render.ClippedPolygon( ctx, inlist, n );
-}
-
-#undef W
-#undef Z
-#undef Y
-#undef X
-#undef SIZE
-#undef TAG
-#undef POLY_CLIP
-#undef LINE_CLIP
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.2
+ *
+ * Copyright (C) 1999-2006 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.
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#define CLIP_DOTPROD(K, A, B, C, D) X(K)*A + Y(K)*B + Z(K)*C + W(K)*D
+
+#define POLY_CLIP( PLANE_BIT, A, B, C, D ) \
+do { \
+ if (mask & PLANE_BIT) { \
+ GLuint idxPrev = inlist[0]; \
+ GLfloat dpPrev = CLIP_DOTPROD(idxPrev, A, B, C, D ); \
+ GLuint outcount = 0; \
+ GLuint i; \
+ \
+ inlist[n] = inlist[0]; /* prevent rotation of vertices */ \
+ for (i = 1; i <= n; i++) { \
+ GLuint idx = inlist[i]; \
+ GLfloat dp = CLIP_DOTPROD(idx, A, B, C, D ); \
+ \
+ if (!IS_NEGATIVE(dpPrev)) { \
+ outlist[outcount++] = idxPrev; \
+ } \
+ \
+ if (DIFFERENT_SIGNS(dp, dpPrev)) { \
+ if (IS_NEGATIVE(dp)) { \
+ /* Going out of bounds. Avoid division by zero as we \
+ * know dp != dpPrev from DIFFERENT_SIGNS, above. \
+ */ \
+ GLfloat t = dp / (dp - dpPrev); \
+ INTERP_4F( t, coord[newvert], coord[idx], coord[idxPrev]); \
+ interp( ctx, t, newvert, idx, idxPrev, GL_TRUE ); \
+ } else { \
+ /* Coming back in. \
+ */ \
+ GLfloat t = dpPrev / (dpPrev - dp); \
+ INTERP_4F( t, coord[newvert], coord[idxPrev], coord[idx]); \
+ interp( ctx, t, newvert, idxPrev, idx, GL_FALSE ); \
+ } \
+ outlist[outcount++] = newvert++; \
+ } \
+ \
+ idxPrev = idx; \
+ dpPrev = dp; \
+ } \
+ \
+ if (outcount < 3) \
+ return; \
+ \
+ { \
+ GLuint *tmp = inlist; \
+ inlist = outlist; \
+ outlist = tmp; \
+ n = outcount; \
+ } \
+ } \
+} while (0)
+
+
+#define LINE_CLIP(PLANE_BIT, A, B, C, D ) \
+do { \
+ if (mask & PLANE_BIT) { \
+ const GLfloat dp0 = CLIP_DOTPROD( v0, A, B, C, D ); \
+ const GLfloat dp1 = CLIP_DOTPROD( v1, A, B, C, D ); \
+ const GLboolean neg_dp0 = IS_NEGATIVE(dp0); \
+ const GLboolean neg_dp1 = IS_NEGATIVE(dp1); \
+ \
+ /* For regular clipping, we know from the clipmask that one \
+ * (or both) of these must be negative (otherwise we wouldn't \
+ * be here). \
+ * For userclip, there is only a single bit for all active \
+ * planes, so we can end up here when there is nothing to do, \
+ * hence the second IS_NEGATIVE() test: \
+ */ \
+ if (neg_dp0 && neg_dp1) \
+ return; /* both vertices outside clip plane: discard */ \
+ \
+ if (neg_dp1) { \
+ GLfloat t = dp1 / (dp1 - dp0); \
+ if (t > t1) t1 = t; \
+ } else if (neg_dp0) { \
+ GLfloat t = dp0 / (dp0 - dp1); \
+ if (t > t0) t0 = t; \
+ } \
+ if (t0 + t1 >= 1.0) \
+ return; /* discard */ \
+ } \
+} while (0)
+
+
+
+/* Clip a line against the viewport and user clip planes.
+ */
+static inline void
+TAG(clip_line)( struct gl_context *ctx, GLuint v0, GLuint v1, GLubyte mask )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &tnl->vb;
+ tnl_interp_func interp = tnl->Driver.Render.Interp;
+ GLfloat (*coord)[4] = VB->ClipPtr->data;
+ GLuint newvert = VB->Count;
+ GLfloat t0 = 0;
+ GLfloat t1 = 0;
+ GLuint p;
+ const GLuint v0_orig = v0;
+
+ if (mask & CLIP_FRUSTUM_BITS) {
+ LINE_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
+ LINE_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
+ LINE_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
+ LINE_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
+ LINE_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
+ LINE_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
+ }
+
+ if (mask & CLIP_USER_BIT) {
+ for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ LINE_CLIP( CLIP_USER_BIT, a, b, c, d );
+ }
+ }
+ }
+
+ if (VB->ClipMask[v0]) {
+ INTERP_4F( t0, coord[newvert], coord[v0], coord[v1] );
+ interp( ctx, t0, newvert, v0, v1, GL_FALSE );
+ v0 = newvert;
+ newvert++;
+ }
+ else {
+ ASSERT(t0 == 0.0);
+ }
+
+ /* Note: we need to use vertex v0_orig when computing the new
+ * interpolated/clipped vertex position, not the current v0 which
+ * may have got set when we clipped the other end of the line!
+ */
+ if (VB->ClipMask[v1]) {
+ INTERP_4F( t1, coord[newvert], coord[v1], coord[v0_orig] );
+ interp( ctx, t1, newvert, v1, v0_orig, GL_FALSE );
+
+ if (ctx->Light.ShadeModel == GL_FLAT)
+ tnl->Driver.Render.CopyPV( ctx, newvert, v1 );
+
+ v1 = newvert;
+
+ newvert++;
+ }
+ else {
+ ASSERT(t1 == 0.0);
+ }
+
+ tnl->Driver.Render.ClippedLine( ctx, v0, v1 );
+}
+
+
+/* Clip a triangle against the viewport and user clip planes.
+ */
+static inline void
+TAG(clip_tri)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLubyte mask )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &tnl->vb;
+ tnl_interp_func interp = tnl->Driver.Render.Interp;
+ GLuint newvert = VB->Count;
+ GLfloat (*coord)[4] = VB->ClipPtr->data;
+ GLuint pv = v2;
+ GLuint vlist[2][MAX_CLIPPED_VERTICES];
+ GLuint *inlist = vlist[0], *outlist = vlist[1];
+ GLuint p;
+ GLuint n = 3;
+
+ ASSIGN_3V(inlist, v2, v0, v1 ); /* pv rotated to slot zero */
+
+ if (0) {
+ /* print pre-clip vertex coords */
+ GLuint i, j;
+ printf("pre clip:\n");
+ for (i = 0; i < n; i++) {
+ j = inlist[i];
+ printf(" %u: %u: %f, %f, %f, %f\n",
+ i, j,
+ coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
+ assert(!IS_INF_OR_NAN(coord[j][0]));
+ assert(!IS_INF_OR_NAN(coord[j][1]));
+ assert(!IS_INF_OR_NAN(coord[j][2]));
+ assert(!IS_INF_OR_NAN(coord[j][3]));
+ }
+ }
+
+
+ if (mask & CLIP_FRUSTUM_BITS) {
+ POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
+ POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
+ POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
+ POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
+ POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
+ POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
+ }
+
+ if (mask & CLIP_USER_BIT) {
+ for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
+ }
+ }
+ }
+
+ if (ctx->Light.ShadeModel == GL_FLAT) {
+ if (pv != inlist[0]) {
+ ASSERT( inlist[0] >= VB->Count );
+ tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
+ }
+ }
+
+ if (0) {
+ /* print post-clip vertex coords */
+ GLuint i, j;
+ printf("post clip:\n");
+ for (i = 0; i < n; i++) {
+ j = inlist[i];
+ printf(" %u: %u: %f, %f, %f, %f\n",
+ i, j,
+ coord[j][0], coord[j][1], coord[j][2], coord[j][3]);
+ }
+ }
+
+ tnl->Driver.Render.ClippedPolygon( ctx, inlist, n );
+}
+
+
+/* Clip a quad against the viewport and user clip planes.
+ */
+static inline void
+TAG(clip_quad)( struct gl_context *ctx, GLuint v0, GLuint v1, GLuint v2, GLuint v3,
+ GLubyte mask )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &tnl->vb;
+ tnl_interp_func interp = tnl->Driver.Render.Interp;
+ GLuint newvert = VB->Count;
+ GLfloat (*coord)[4] = VB->ClipPtr->data;
+ GLuint pv = v3;
+ GLuint vlist[2][MAX_CLIPPED_VERTICES];
+ GLuint *inlist = vlist[0], *outlist = vlist[1];
+ GLuint p;
+ GLuint n = 4;
+
+ ASSIGN_4V(inlist, v3, v0, v1, v2 ); /* pv rotated to slot zero */
+
+ if (mask & CLIP_FRUSTUM_BITS) {
+ POLY_CLIP( CLIP_RIGHT_BIT, -1, 0, 0, 1 );
+ POLY_CLIP( CLIP_LEFT_BIT, 1, 0, 0, 1 );
+ POLY_CLIP( CLIP_TOP_BIT, 0, -1, 0, 1 );
+ POLY_CLIP( CLIP_BOTTOM_BIT, 0, 1, 0, 1 );
+ POLY_CLIP( CLIP_FAR_BIT, 0, 0, -1, 1 );
+ POLY_CLIP( CLIP_NEAR_BIT, 0, 0, 1, 1 );
+ }
+
+ if (mask & CLIP_USER_BIT) {
+ for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ POLY_CLIP( CLIP_USER_BIT, a, b, c, d );
+ }
+ }
+ }
+
+ if (ctx->Light.ShadeModel == GL_FLAT) {
+ if (pv != inlist[0]) {
+ ASSERT( inlist[0] >= VB->Count );
+ tnl->Driver.Render.CopyPV( ctx, inlist[0], pv );
+ }
+ }
+
+ tnl->Driver.Render.ClippedPolygon( ctx, inlist, n );
+}
+
+#undef W
+#undef Z
+#undef Y
+#undef X
+#undef SIZE
+#undef TAG
+#undef POLY_CLIP
+#undef LINE_CLIP
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 19:14:37 +0000