-/**
- * \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.
+ * 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"),
* 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 feedback.c
+ * Selection and feedback modes functions.
*/
#include "glheader.h"
-#include "colormac.h"
#include "context.h"
#include "enums.h"
#include "feedback.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
+#define FB_COLOR 0x04
+#define FB_TEXTURE 0X08
_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" );
_mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(size<0)" );
return;
}
- if (!buffer) {
+ if (!buffer && size > 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glFeedbackBuffer(buffer==NULL)" );
ctx->Feedback.BufferSize = 0;
return;
ctx->Feedback._Mask = FB_3D;
break;
case GL_3D_COLOR:
- ctx->Feedback._Mask = (FB_3D |
- (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX));
+ ctx->Feedback._Mask = (FB_3D | FB_COLOR);
break;
case GL_3D_COLOR_TEXTURE:
- ctx->Feedback._Mask = (FB_3D |
- (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX) |
- FB_TEXTURE);
+ ctx->Feedback._Mask = (FB_3D | FB_COLOR | FB_TEXTURE);
break;
case GL_4D_COLOR_TEXTURE:
- ctx->Feedback._Mask = (FB_3D | FB_4D |
- (ctx->Visual.rgbMode ? FB_COLOR : FB_INDEX) |
- FB_TEXTURE);
+ ctx->Feedback._Mask = (FB_3D | FB_4D | FB_COLOR | FB_TEXTURE);
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glFeedbackBuffer" );
ctx->Feedback.Type = type;
ctx->Feedback.BufferSize = size;
ctx->Feedback.Buffer = buffer;
- ctx->Feedback.Count = 0; /* Becaues of this. */
+ ctx->Feedback.Count = 0; /* Because of this. */
}
_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 );
+ _mesa_feedback_token( ctx, (GLfloat) (GLint) GL_PASS_THROUGH_TOKEN );
+ _mesa_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] )
+void
+_mesa_feedback_vertex(struct gl_context *ctx,
+ const GLfloat win[4],
+ const GLfloat color[4],
+ 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
+ _mesa_feedback_token( ctx, win[0] );
+ _mesa_feedback_token( ctx, win[1] );
if (ctx->Feedback._Mask & FB_3D) {
- FEEDBACK_TOKEN( ctx, win[2] );
+ _mesa_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 );
+ _mesa_feedback_token( ctx, win[3] );
}
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] );
+ _mesa_feedback_token( ctx, color[0] );
+ _mesa_feedback_token( ctx, color[1] );
+ _mesa_feedback_token( ctx, color[2] );
+ _mesa_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] );
+ _mesa_feedback_token( ctx, texcoord[0] );
+ _mesa_feedback_token( ctx, texcoord[1] );
+ _mesa_feedback_token( ctx, texcoord[2] );
+ _mesa_feedback_token( ctx, texcoord[3] );
}
}
-#endif
-
/**********************************************************************/
/** \name Selection */
* \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.
+ * the fields in __struct gl_contextRec::Select with the given buffer.
*/
void GLAPIENTRY
_mesa_SelectBuffer( GLsizei size, GLuint *buffer )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (size < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glSelectBuffer(size)");
+ return;
+ }
if (ctx->RenderMode==GL_SELECT) {
_mesa_error( ctx, GL_INVALID_OPERATION, "glSelectBuffer" );
/**
* Write a value of a record into the selection buffer.
*
- * \param CTX GL context.
- * \param V value.
+ * \param ctx GL context.
+ * \param value 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++;
+static inline void
+write_record(struct gl_context *ctx, GLuint value)
+{
+ if (ctx->Select.BufferCount < ctx->Select.BufferSize) {
+ ctx->Select.Buffer[ctx->Select.BufferCount] = value;
+ }
+ ctx->Select.BufferCount++;
+}
/**
* Sets gl_selection::HitFlag and updates gl_selection::HitMinZ and
* gl_selection::HitMaxZ.
*/
-void _mesa_update_hitflag( GLcontext *ctx, GLfloat z )
+void
+_mesa_update_hitflag(struct gl_context *ctx, GLfloat z)
{
ctx->Select.HitFlag = GL_TRUE;
if (z < ctx->Select.HitMinZ) {
*
* \sa gl_selection.
*/
-static void write_hit_record( GLcontext *ctx )
+static void
+write_hit_record(struct gl_context *ctx)
{
GLuint i;
GLuint zmin, zmax, zscale = (~0u);
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 );
+ 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] );
+ write_record( ctx, ctx->Select.NameStack[i] );
}
ctx->Select.Hits++;
*
* 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.
+ * __struct gl_contextRec::NewState.
*/
void GLAPIENTRY
_mesa_InitNames( void )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_VERTICES(ctx, 0);
/* Record the hit before the HitFlag is wiped out again. */
if (ctx->RenderMode == GL_SELECT) {
* 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.
+ * sa __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_LoadName( GLuint name )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->RenderMode != GL_SELECT) {
return;
* 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.
+ * sa __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_PushName( GLuint name )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->RenderMode != GL_SELECT) {
return;
* 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.
+ * sa __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_PopName( void )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->RenderMode != GL_SELECT) {
return;
* 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
+ * __struct gl_contextRec::RenderMode and notifies the driver via the
* dd_function_table::RenderMode callback.
*/
GLint GLAPIENTRY
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));
+ _mesa_debug(ctx, "glRenderMode %s\n", _mesa_enum_to_string(mode));
FLUSH_VERTICES(ctx, _NEW_RENDERMODE);
}
if (ctx->Select.BufferCount > ctx->Select.BufferSize) {
/* overflow */
-#ifdef DEBUG
+#ifndef NDEBUG
_mesa_warning(ctx, "Feedback buffer overflow");
#endif
result = -1;
ctx->Select.Hits = 0;
ctx->Select.NameStackDepth = 0;
break;
-#if _HAVE_FULL_GL
case GL_FEEDBACK:
if (ctx->Feedback.Count > ctx->Feedback.BufferSize) {
/* overflow */
}
ctx->Feedback.Count = 0;
break;
-#endif
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glRenderMode" );
return 0;
_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;
/**
* Initialize context feedback data.
*/
-void _mesa_init_feedback( GLcontext * ctx )
+void _mesa_init_feedback( struct gl_context * ctx )
{
/* Feedback */
ctx->Feedback.Type = GL_2D; /* TODO: verify */
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