/**
* 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 __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_LoadName( GLuint name )
{
GET_CURRENT_CONTEXT(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;
}
}
void
_mesa_InitNames( void )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glInitNames");
/* 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;
}
/**
* 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
* __struct gl_contextRec::NewState.
*/
void GLAPIENTRY
_mesa_InitNames( void )
{
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
/* 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;
}
void
_mesa_PopName( void )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPopName");
if (ctx->RenderMode != GL_SELECT) {
return;
}
if (ctx->Select.HitFlag) {
write_hit_record( ctx );
}
if (ctx->Select.NameStackDepth > 0) {
ctx->Select.NameStackDepth--;
}
else {
gl_error( ctx, GL_STACK_UNDERFLOW, "glPopName" );
}
}
void
_mesa_PushName( GLuint name )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPushName");
if (ctx->RenderMode != GL_SELECT) {
return;
}
if (ctx->Select.HitFlag) {
write_hit_record( ctx );
}
if (ctx->Select.NameStackDepth < MAX_NAME_STACK_DEPTH) {
ctx->Select.NameStack[ctx->Select.NameStackDepth++] = name;
}
else {
gl_error( ctx, GL_STACK_OVERFLOW, "glPushName" );
}
}
/**
* 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 __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_PopName( void )
{
GET_CURRENT_CONTEXT(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--;
}
/**
* 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 __struct gl_contextRec::Select.
*/
void GLAPIENTRY
_mesa_PushName( GLuint name )
{
GET_CURRENT_CONTEXT(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;
}
void gl_PopName( GLcontext *ctx )
{
if (INSIDE_BEGIN_END(ctx)) {
gl_error( ctx, GL_INVALID_OPERATION, "glPopName" );
return;
}
if (ctx->RenderMode!=GL_SELECT) {
return;
}
if (ctx->Select.HitFlag) {
write_hit_record( ctx );
}
if (ctx->Select.NameStackDepth>0) {
ctx->Select.NameStackDepth--;
}
else {
gl_error( ctx, GL_STACK_UNDERFLOW, "glPopName" );
}
}
void gl_PushName( GLcontext *ctx, GLuint name )
{
if (INSIDE_BEGIN_END(ctx)) {
gl_error( ctx, GL_INVALID_OPERATION, "glPushName" );
return;
}
if (ctx->RenderMode!=GL_SELECT) {
return;
}
if (ctx->Select.HitFlag) {
write_hit_record( ctx );
}
if (ctx->Select.NameStackDepth<MAX_NAME_STACK_DEPTH) {
ctx->Select.NameStack[ctx->Select.NameStackDepth++] = name;
}
else {
gl_error( ctx, GL_STACK_OVERFLOW, "glPushName" );
}
}
void
_mesa_LoadName( GLuint name )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLoadName");
if (ctx->RenderMode != GL_SELECT) {
return;
}
if (ctx->Select.NameStackDepth == 0) {
gl_error( ctx, GL_INVALID_OPERATION, "glLoadName" );
return;
}
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;
}
}
/**
* 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
* __struct gl_contextRec::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;
case GL_FEEDBACK:
if (ctx->Feedback.Count > ctx->Feedback.BufferSize) {
/* overflow */
result = -1;
}
else {
result = ctx->Feedback.Count;
}
ctx->Feedback.Count = 0;
break;
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;
case GL_FEEDBACK:
if (ctx->Feedback.BufferSize==0) {
/* haven't called glFeedbackBuffer yet */
_mesa_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glRenderMode" );
return 0;
}
ctx->RenderMode = mode;
if (ctx->Driver.RenderMode)
ctx->Driver.RenderMode( ctx, mode );
return result;
}
/*
* NOTE: this function can't be put in a display list.
*/
GLint
_mesa_RenderMode( GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
GLint result;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, "glRenderMode", 0);
if (MESA_VERBOSE & VERBOSE_API)
fprintf(stderr, "glRenderMode %s\n", gl_lookup_enum_by_nr(mode));
ctx->TriangleCaps &= ~(DD_FEEDBACK|DD_SELECT);
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
gl_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;
case GL_FEEDBACK:
if (ctx->Feedback.Count > ctx->Feedback.BufferSize) {
/* overflow */
result = -1;
}
else {
result = ctx->Feedback.Count;
}
ctx->Feedback.Count = 0;
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glRenderMode" );
return 0;
}
switch (mode) {
case GL_RENDER:
break;
case GL_SELECT:
ctx->TriangleCaps |= DD_SELECT;
if (ctx->Select.BufferSize==0) {
/* haven't called glSelectBuffer yet */
gl_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
break;
case GL_FEEDBACK:
ctx->TriangleCaps |= DD_FEEDBACK;
if (ctx->Feedback.BufferSize==0) {
/* haven't called glFeedbackBuffer yet */
gl_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glRenderMode" );
return 0;
}
ctx->RenderMode = mode;
ctx->NewState |= NEW_ALL;
return result;
}
/*
* NOTE: this function can't be put in a display list.
*/
GLint gl_RenderMode( GLcontext *ctx, GLenum mode )
{
GLint result;
if (INSIDE_BEGIN_END(ctx)) {
gl_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
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
gl_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;
case GL_FEEDBACK:
if (ctx->Feedback.Count > ctx->Feedback.BufferSize) {
/* overflow */
result = -1;
}
else {
result = ctx->Feedback.Count;
}
ctx->Feedback.Count = 0;
break;
default:
gl_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 */
gl_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
break;
case GL_FEEDBACK:
if (ctx->Feedback.BufferSize==0) {
/* haven't called glFeedbackBuffer yet */
gl_error( ctx, GL_INVALID_OPERATION, "glRenderMode" );
}
break;
default:
gl_error( ctx, GL_INVALID_ENUM, "glRenderMode" );
return 0;
}
ctx->RenderMode = mode;
ctx->NewState |= NEW_ALL;
return result;
}