X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fdlist.c;h=b692c335a73f5e8c1f932636189274c1794bbdf0;hb=536e3c9168c315651210ca853eb8cb4423f9f71c;hp=f76323dff571c3d6abe39b6daa5493506d8095f6;hpb=77be195cf691bc7ba249f350e13c7ac06a78e9de;p=mesa.git diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c index f76323dff57..b692c335a73 100644 --- a/src/mesa/main/dlist.c +++ b/src/mesa/main/dlist.c @@ -1,8 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 7.1 + * Version: 7.7 * - * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. 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"), @@ -91,6 +92,33 @@ #include "glapi/dispatch.h" + +/** + * Other parts of Mesa (such as the VBO module) can plug into the display + * list system. This structure describes new display list instructions. + */ +struct gl_list_instruction +{ + GLuint Size; + void (*Execute)( GLcontext *ctx, void *data ); + void (*Destroy)( GLcontext *ctx, void *data ); + void (*Print)( GLcontext *ctx, void *data ); +}; + + +#define MAX_DLIST_EXT_OPCODES 16 + +/** + * Used by device drivers to hook new commands into display lists. + */ +struct gl_list_extensions +{ + struct gl_list_instruction Opcode[MAX_DLIST_EXT_OPCODES]; + GLuint NumOpcodes; +}; + + + /** * Flush vertices. * @@ -477,6 +505,49 @@ lookup_list(GLcontext *ctx, GLuint list) } +/** Is the given opcode an extension code? */ +static INLINE GLboolean +is_ext_opcode(OpCode opcode) +{ + return (opcode >= OPCODE_EXT_0); +} + + +/** Destroy an extended opcode instruction */ +static GLint +ext_opcode_destroy(GLcontext *ctx, Node *node) +{ + const GLint i = node[0].opcode - OPCODE_EXT_0; + GLint step; + ctx->ListExt->Opcode[i].Destroy(ctx, &node[1]); + step = ctx->ListExt->Opcode[i].Size; + return step; +} + + +/** Execute an extended opcode instruction */ +static GLint +ext_opcode_execute(GLcontext *ctx, Node *node) +{ + const GLint i = node[0].opcode - OPCODE_EXT_0; + GLint step; + ctx->ListExt->Opcode[i].Execute(ctx, &node[1]); + step = ctx->ListExt->Opcode[i].Size; + return step; +} + + +/** Print an extended opcode instruction */ +static GLint +ext_opcode_print(GLcontext *ctx, Node *node) +{ + const GLint i = node[0].opcode - OPCODE_EXT_0; + GLint step; + ctx->ListExt->Opcode[i].Print(ctx, &node[1]); + step = ctx->ListExt->Opcode[i].Size; + return step; +} + /** * Delete the named display list, but don't remove from hash table. @@ -492,16 +563,14 @@ _mesa_delete_list(GLcontext *ctx, struct gl_display_list *dlist) done = block ? GL_FALSE : GL_TRUE; while (!done) { + const OpCode opcode = n[0].opcode; /* check for extension opcodes first */ - - GLint i = (GLint) n[0].opcode - (GLint) OPCODE_EXT_0; - if (i >= 0 && i < (GLint) ctx->ListExt.NumOpcodes) { - ctx->ListExt.Opcode[i].Destroy(ctx, &n[1]); - n += ctx->ListExt.Opcode[i].Size; + if (is_ext_opcode(opcode)) { + n += ext_opcode_destroy(ctx, n); } else { - switch (n[0].opcode) { + switch (opcode) { /* for some commands, we need to free malloc'd memory */ case OPCODE_MAP1: _mesa_free(n[6].data); @@ -789,14 +858,13 @@ unpack_image(GLcontext *ctx, GLuint dimensions, /** - * Allocate space for a display list instruction. + * Allocate space for a display list instruction (opcode + payload space). * \param opcode the instruction opcode (OPCODE_* value) - * \param bytes instruction size in bytes, not counting opcode. - * \return pointer to the usable data area (not including the internal - * opcode). + * \param bytes instruction payload size (not counting opcode) + * \return pointer to allocated memory (the opcode space) */ -void * -_mesa_dlist_alloc(GLcontext *ctx, GLuint opcode, GLuint bytes) +static Node * +dlist_alloc(GLcontext *ctx, OpCode opcode, GLuint bytes) { const GLuint numNodes = 1 + (bytes + sizeof(Node) - 1) / sizeof(Node); Node *n; @@ -830,9 +898,30 @@ _mesa_dlist_alloc(GLcontext *ctx, GLuint opcode, GLuint bytes) n = ctx->ListState.CurrentBlock + ctx->ListState.CurrentPos; ctx->ListState.CurrentPos += numNodes; - n[0].opcode = (OpCode) opcode; + n[0].opcode = opcode; - return (void *) (n + 1); /* return ptr to node following opcode */ + return n; +} + + + +/** + * Allocate space for a display list instruction. Used by callers outside + * this file for things like VBO vertex data. + * + * \param opcode the instruction opcode (OPCODE_* value) + * \param bytes instruction size in bytes, not counting opcode. + * \return pointer to the usable data area (not including the internal + * opcode). + */ +void * +_mesa_dlist_alloc(GLcontext *ctx, GLuint opcode, GLuint bytes) +{ + Node *n = dlist_alloc(ctx, (OpCode) opcode, bytes); + if (n) + return n + 1; /* return pointer to payload area, after opcode */ + else + return NULL; } @@ -853,31 +942,32 @@ _mesa_dlist_alloc_opcode(GLcontext *ctx, void (*destroy) (GLcontext *, void *), void (*print) (GLcontext *, void *)) { - if (ctx->ListExt.NumOpcodes < MAX_DLIST_EXT_OPCODES) { - const GLuint i = ctx->ListExt.NumOpcodes++; - ctx->ListExt.Opcode[i].Size = + if (ctx->ListExt->NumOpcodes < MAX_DLIST_EXT_OPCODES) { + const GLuint i = ctx->ListExt->NumOpcodes++; + ctx->ListExt->Opcode[i].Size = 1 + (size + sizeof(Node) - 1) / sizeof(Node); - ctx->ListExt.Opcode[i].Execute = execute; - ctx->ListExt.Opcode[i].Destroy = destroy; - ctx->ListExt.Opcode[i].Print = print; + ctx->ListExt->Opcode[i].Execute = execute; + ctx->ListExt->Opcode[i].Destroy = destroy; + ctx->ListExt->Opcode[i].Print = print; return i + OPCODE_EXT_0; } return -1; } - /** - * Allocate display list instruction. Returns Node ptr to where the opcode - * is stored. The first function parameter would go in node[1]. + * Allocate space for a display list instruction. The space is basically + * an array of Nodes where node[0] holds the opcode, node[1] is the first + * function parameter, node[2] is the second parameter, etc. + * * \param opcode one of OPCODE_x * \param nparams number of function parameters + * \return pointer to start of instruction space */ static INLINE Node * alloc_instruction(GLcontext *ctx, OpCode opcode, GLuint nparams) { - return (Node *) - _mesa_dlist_alloc(ctx, opcode, nparams * sizeof(Node)) - 1; + return dlist_alloc(ctx, opcode, nparams * sizeof(Node)); } @@ -6444,13 +6534,10 @@ execute_list(GLcontext *ctx, GLuint list) done = GL_FALSE; while (!done) { - OpCode opcode = n[0].opcode; - int i = (int) n[0].opcode - (int) OPCODE_EXT_0; + const OpCode opcode = n[0].opcode; - if (i >= 0 && i < (GLint) ctx->ListExt.NumOpcodes) { - /* this is a driver-extended opcode */ - ctx->ListExt.Opcode[i].Execute(ctx, &n[1]); - n += ctx->ListExt.Opcode[i].Size; + if (is_ext_opcode(opcode)) { + n += ext_opcode_execute(ctx, n); } else { switch (opcode) { @@ -9044,13 +9131,10 @@ print_list(GLcontext *ctx, GLuint list) done = n ? GL_FALSE : GL_TRUE; while (!done) { - OpCode opcode = n[0].opcode; - GLint i = (GLint) n[0].opcode - (GLint) OPCODE_EXT_0; + const OpCode opcode = n[0].opcode; - if (i >= 0 && i < (GLint) ctx->ListExt.NumOpcodes) { - /* this is a driver-extended opcode */ - ctx->ListExt.Opcode[i].Print(ctx, &n[1]); - n += ctx->ListExt.Opcode[i].Size; + if (is_ext_opcode(opcode)) { + n += ext_opcode_print(ctx, n); } else { switch (opcode) { @@ -9428,6 +9512,9 @@ _mesa_init_display_list(GLcontext *ctx) tableInitialized = GL_TRUE; } + /* extension info */ + ctx->ListExt = CALLOC_STRUCT(gl_list_extensions); + /* Display list */ ctx->ListState.CallDepth = 0; ctx->ExecuteFlag = GL_TRUE; @@ -9442,3 +9529,11 @@ _mesa_init_display_list(GLcontext *ctx) _mesa_save_vtxfmt_init(&ctx->ListState.ListVtxfmt); #endif } + + +void +_mesa_free_display_list_data(GLcontext *ctx) +{ + free(ctx->ListExt); + ctx->ListExt = NULL; +}