diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/feedback.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/feedback.c | 541 |
1 files changed, 0 insertions, 541 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/feedback.c b/nx-X11/extras/Mesa/src/mesa/main/feedback.c deleted file mode 100644 index 48c2ccbff..000000000 --- a/nx-X11/extras/Mesa/src/mesa/main/feedback.c +++ /dev/null @@ -1,541 +0,0 @@ -/** - * \file feedback.c - * Selection and feedback modes functions. - */ - -/* - * Mesa 3-D graphics library - * Version: 5.1 - * - * Copyright (C) 1999-2003 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. - */ - - -#include "glheader.h" -#include "colormac.h" -#include "context.h" -#include "enums.h" -#include "feedback.h" -#include "macros.h" -#include "mtypes.h" - - -#if _HAVE_FULL_GL - - -#define FB_3D 0x01 -#define FB_4D 0x02 -#define FB_INDEX 0x04 -#define FB_COLOR 0x08 -#define FB_TEXTURE 0X10 - - - -void GLAPIENTRY -_mesa_FeedbackBuffer( GLsizei size, GLenum type, GLfloat *buffer ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode==GL_FEEDBACK) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glFeedbackBuffer" ); - return; - } - if (size<0) { - _mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(size<0)" ); - return; - } - if (!buffer) { - _mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(buffer==NULL)" ); - ctx->Feedback.BufferSize = 0; - return; - } - - switch (type) { - case GL_2D: - ctx->Feedback._Mask = 0; - break; - case GL_3D: - ctx->Feedback._Mask = FB_3D; - break; - case GL_3D_COLOR: - ctx->Feedback._Mask = (FB_3D | - (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX)); - break; - case GL_3D_COLOR_TEXTURE: - ctx->Feedback._Mask = (FB_3D | - (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX) | - FB_TEXTURE); - break; - case GL_4D_COLOR_TEXTURE: - ctx->Feedback._Mask = (FB_3D | FB_4D | - (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX) | - FB_TEXTURE); - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glFeedbackBuffer" ); - return; - } - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); /* Always flush */ - ctx->Feedback.Type = type; - ctx->Feedback.BufferSize = size; - ctx->Feedback.Buffer = buffer; - ctx->Feedback.Count = 0; /* Becaues of this. */ -} - - -void GLAPIENTRY -_mesa_PassThrough( GLfloat token ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode==GL_FEEDBACK) { - FLUSH_VERTICES(ctx, 0); - FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_PASS_THROUGH_TOKEN ); - FEEDBACK_TOKEN( ctx, token ); - } -} - - - -/* - * Put a vertex into the feedback buffer. - */ -void _mesa_feedback_vertex( GLcontext *ctx, - const GLfloat win[4], - const GLfloat color[4], - GLfloat index, - const GLfloat texcoord[4] ) -{ -#if 0 - { - /* snap window x, y to fractional pixel position */ - const GLint snapMask = ~((FIXED_ONE / (1 << SUB_PIXEL_BITS)) - 1); - GLfixed x, y; - x = FloatToFixed(win[0]) & snapMask; - y = FloatToFixed(win[1]) & snapMask; - FEEDBACK_TOKEN(ctx, FixedToFloat(x)); - FEEDBACK_TOKEN(ctx, FixedToFloat(y) ); - } -#else - FEEDBACK_TOKEN( ctx, win[0] ); - FEEDBACK_TOKEN( ctx, win[1] ); -#endif - if (ctx->Feedback._Mask & FB_3D) { - FEEDBACK_TOKEN( ctx, win[2] ); - } - if (ctx->Feedback._Mask & FB_4D) { - FEEDBACK_TOKEN( ctx, win[3] ); - } - if (ctx->Feedback._Mask & FB_INDEX) { - FEEDBACK_TOKEN( ctx, (GLfloat) index ); - } - if (ctx->Feedback._Mask & FB_COLOR) { - FEEDBACK_TOKEN( ctx, color[0] ); - FEEDBACK_TOKEN( ctx, color[1] ); - FEEDBACK_TOKEN( ctx, color[2] ); - FEEDBACK_TOKEN( ctx, color[3] ); - } - if (ctx->Feedback._Mask & FB_TEXTURE) { - FEEDBACK_TOKEN( ctx, texcoord[0] ); - FEEDBACK_TOKEN( ctx, texcoord[1] ); - FEEDBACK_TOKEN( ctx, texcoord[2] ); - FEEDBACK_TOKEN( ctx, texcoord[3] ); - } -} - -#endif - - -/**********************************************************************/ -/** \name Selection */ -/*@{*/ - -/** - * Establish a buffer for selection mode values. - * - * \param size buffer size. - * \param buffer buffer. - * - * \sa glSelectBuffer(). - * - * \note this function can't be put in a display list. - * - * Verifies we're not in selection mode, flushes the vertices and initialize - * the fields in __GLcontextRec::Select with the given buffer. - */ -void GLAPIENTRY -_mesa_SelectBuffer( GLsizei size, GLuint *buffer ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode==GL_SELECT) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glSelectBuffer" ); - return; /* KW: added return */ - } - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); - ctx->Select.Buffer = buffer; - ctx->Select.BufferSize = size; - ctx->Select.BufferCount = 0; - ctx->Select.HitFlag = GL_FALSE; - ctx->Select.HitMinZ = 1.0; - ctx->Select.HitMaxZ = 0.0; -} - - -/** - * Write a value of a record into the selection buffer. - * - * \param CTX GL context. - * \param V value. - * - * Verifies there is free space in the buffer to write the value and - * increments the pointer. - */ -#define WRITE_RECORD( CTX, V ) \ - if (CTX->Select.BufferCount < CTX->Select.BufferSize) { \ - CTX->Select.Buffer[CTX->Select.BufferCount] = (V); \ - } \ - CTX->Select.BufferCount++; - - -/** - * Update the hit flag and the maximum and minimum depth values. - * - * \param ctx GL context. - * \param z depth. - * - * Sets gl_selection::HitFlag and updates gl_selection::HitMinZ and - * gl_selection::HitMaxZ. - */ -void _mesa_update_hitflag( GLcontext *ctx, GLfloat z ) -{ - ctx->Select.HitFlag = GL_TRUE; - if (z < ctx->Select.HitMinZ) { - ctx->Select.HitMinZ = z; - } - if (z > ctx->Select.HitMaxZ) { - ctx->Select.HitMaxZ = z; - } -} - - -/** - * Write the hit record. - * - * \param ctx GL context. - * - * Write the hit record, i.e., the number of names in the stack, the minimum and - * maximum depth values and the number of names in the name stack at the time - * of the event. Resets the hit flag. - * - * \sa gl_selection. - */ -static void write_hit_record( GLcontext *ctx ) -{ - GLuint i; - GLuint zmin, zmax, zscale = (~0u); - - /* HitMinZ and HitMaxZ are in [0,1]. Multiply these values by */ - /* 2^32-1 and round to nearest unsigned integer. */ - - assert( ctx != NULL ); /* this line magically fixes a SunOS 5.x/gcc bug */ - zmin = (GLuint) ((GLfloat) zscale * ctx->Select.HitMinZ); - zmax = (GLuint) ((GLfloat) zscale * ctx->Select.HitMaxZ); - - WRITE_RECORD( ctx, ctx->Select.NameStackDepth ); - WRITE_RECORD( ctx, zmin ); - WRITE_RECORD( ctx, zmax ); - for (i = 0; i < ctx->Select.NameStackDepth; i++) { - WRITE_RECORD( ctx, ctx->Select.NameStack[i] ); - } - - ctx->Select.Hits++; - ctx->Select.HitFlag = GL_FALSE; - ctx->Select.HitMinZ = 1.0; - ctx->Select.HitMaxZ = -1.0; -} - - -/** - * Initialize the name stack. - * - * Verifies we are in select mode and resets the name stack depth and resets - * the hit record data in gl_selection. Marks new render mode in - * __GLcontextRec::NewState. - */ -void GLAPIENTRY -_mesa_InitNames( void ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); - - /* Record the hit before the HitFlag is wiped out again. */ - if (ctx->RenderMode == GL_SELECT) { - if (ctx->Select.HitFlag) { - write_hit_record( ctx ); - } - } - ctx->Select.NameStackDepth = 0; - ctx->Select.HitFlag = GL_FALSE; - ctx->Select.HitMinZ = 1.0; - ctx->Select.HitMaxZ = 0.0; - ctx->NewState |= _NEW_RENDERMODE; -} - - -/** - * Load the top-most name of the name stack. - * - * \param name name. - * - * Verifies we are in selection mode and that the name stack is not empty. - * Flushes vertices. If there is a hit flag writes it (via write_hit_record()), - * and replace the top-most name in the stack. - * - * sa __GLcontextRec::Select. - */ -void GLAPIENTRY -_mesa_LoadName( GLuint name ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode != GL_SELECT) { - return; - } - if (ctx->Select.NameStackDepth == 0) { - _mesa_error( ctx, GL_INVALID_OPERATION, "glLoadName" ); - return; - } - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); - - if (ctx->Select.HitFlag) { - write_hit_record( ctx ); - } - if (ctx->Select.NameStackDepth < MAX_NAME_STACK_DEPTH) { - ctx->Select.NameStack[ctx->Select.NameStackDepth-1] = name; - } - else { - ctx->Select.NameStack[MAX_NAME_STACK_DEPTH-1] = name; - } -} - - -/** - * Push a name into the name stack. - * - * \param name name. - * - * Verifies we are in selection mode and that the name stack is not full. - * Flushes vertices. If there is a hit flag writes it (via write_hit_record()), - * and adds the name to the top of the name stack. - * - * sa __GLcontextRec::Select. - */ -void GLAPIENTRY -_mesa_PushName( GLuint name ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode != GL_SELECT) { - return; - } - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); - if (ctx->Select.HitFlag) { - write_hit_record( ctx ); - } - if (ctx->Select.NameStackDepth >= MAX_NAME_STACK_DEPTH) { - _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushName" ); - } - else - ctx->Select.NameStack[ctx->Select.NameStackDepth++] = name; -} - - -/** - * Pop a name into the name stack. - * - * Verifies we are in selection mode and that the name stack is not empty. - * Flushes vertices. If there is a hit flag writes it (via write_hit_record()), - * and removes top-most name in the name stack. - * - * sa __GLcontextRec::Select. - */ -void GLAPIENTRY -_mesa_PopName( void ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->RenderMode != GL_SELECT) { - return; - } - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); - if (ctx->Select.HitFlag) { - write_hit_record( ctx ); - } - if (ctx->Select.NameStackDepth == 0) { - _mesa_error( ctx, GL_STACK_UNDERFLOW, "glPopName" ); - } - else - ctx->Select.NameStackDepth--; -} - -/*@}*/ - - -/**********************************************************************/ -/** \name Render Mode */ -/*@{*/ - -/** - * Set rasterization mode. - * - * \param mode rasterization mode. - * - * \note this function can't be put in a display list. - * - * \sa glRenderMode(). - * - * Flushes the vertices and do the necessary cleanup according to the previous - * rasterization mode, such as writing the hit record or resent the select - * buffer index when exiting the select mode. Updates - * __GLcontextRec::RenderMode and notifies the driver via the - * dd_function_table::RenderMode callback. - */ -GLint GLAPIENTRY -_mesa_RenderMode( GLenum mode ) -{ - GET_CURRENT_CONTEXT(ctx); - GLint result; - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glRenderMode %s\n", _mesa_lookup_enum_by_nr(mode)); - - FLUSH_VERTICES(ctx, _NEW_RENDERMODE); - - switch (ctx->RenderMode) { - case GL_RENDER: - result = 0; - break; - case GL_SELECT: - if (ctx->Select.HitFlag) { - write_hit_record( ctx ); - } - if (ctx->Select.BufferCount > ctx->Select.BufferSize) { - /* overflow */ -#ifdef DEBUG - _mesa_warning(ctx, "Feedback buffer overflow"); -#endif - result = -1; - } - else { - result = ctx->Select.Hits; - } - ctx->Select.BufferCount = 0; - ctx->Select.Hits = 0; - ctx->Select.NameStackDepth = 0; - break; -#if _HAVE_FULL_GL - case GL_FEEDBACK: - if (ctx->Feedback.Count > ctx->Feedback.BufferSize) { - /* overflow */ - result = -1; - } - else { - result = ctx->Feedback.Count; - } - ctx->Feedback.Count = 0; - break; -#endif - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glRenderMode" ); - return 0; - } - - switch (mode) { - case GL_RENDER: - break; - case GL_SELECT: - if (ctx->Select.BufferSize==0) { - /* haven't called glSelectBuffer yet */ - _mesa_error( ctx, GL_INVALID_OPERATION, "glRenderMode" ); - } - break; -#if _HAVE_FULL_GL - case GL_FEEDBACK: - if (ctx->Feedback.BufferSize==0) { - /* haven't called glFeedbackBuffer yet */ - _mesa_error( ctx, GL_INVALID_OPERATION, "glRenderMode" ); - } - break; -#endif - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glRenderMode" ); - return 0; - } - - ctx->RenderMode = mode; - if (ctx->Driver.RenderMode) - ctx->Driver.RenderMode( ctx, mode ); - - return result; -} - -/*@}*/ - - -/**********************************************************************/ -/** \name Initialization */ -/*@{*/ - -/** - * Initialize context feedback data. - */ -void _mesa_init_feedback( GLcontext * ctx ) -{ - /* Feedback */ - ctx->Feedback.Type = GL_2D; /* TODO: verify */ - ctx->Feedback.Buffer = NULL; - ctx->Feedback.BufferSize = 0; - ctx->Feedback.Count = 0; - - /* Selection/picking */ - ctx->Select.Buffer = NULL; - ctx->Select.BufferSize = 0; - ctx->Select.BufferCount = 0; - ctx->Select.Hits = 0; - ctx->Select.NameStackDepth = 0; - - /* Miscellaneous */ - ctx->RenderMode = GL_RENDER; -} - -/*@}*/ |