0,0 → 1,147 |
/* |
* Mesa 3-D graphics library |
* Version: 7.8 |
* |
* 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"), |
* 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 (including the next |
* paragraph) 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 |
* 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 condrender.c |
* Conditional rendering functions |
* |
* \author Brian Paul |
*/ |
|
#include "glheader.h" |
#include "condrender.h" |
#include "enums.h" |
#include "queryobj.h" |
|
|
void GLAPIENTRY |
_mesa_BeginConditionalRender(GLuint queryId, GLenum mode) |
{ |
struct gl_query_object *q; |
GET_CURRENT_CONTEXT(ctx); |
|
if (!ctx->Extensions.NV_conditional_render || ctx->Query.CondRenderQuery) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()"); |
return; |
} |
|
ASSERT(ctx->Query.CondRenderMode == GL_NONE); |
|
switch (mode) { |
case GL_QUERY_WAIT: |
case GL_QUERY_NO_WAIT: |
case GL_QUERY_BY_REGION_WAIT: |
case GL_QUERY_BY_REGION_NO_WAIT: |
/* OK */ |
break; |
default: |
_mesa_error(ctx, GL_INVALID_ENUM, "glBeginConditionalRender(mode=%s)", |
_mesa_lookup_enum_by_nr(mode)); |
return; |
} |
|
q = _mesa_lookup_query_object(ctx, queryId); |
if (!q) { |
_mesa_error(ctx, GL_INVALID_VALUE, |
"glBeginConditionalRender(bad queryId=%u)", queryId); |
return; |
} |
ASSERT(q->Id == queryId); |
|
if (q->Target != GL_SAMPLES_PASSED) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glBeginConditionalRender()"); |
return; |
} |
|
ctx->Query.CondRenderQuery = q; |
ctx->Query.CondRenderMode = mode; |
|
if (ctx->Driver.BeginConditionalRender) |
ctx->Driver.BeginConditionalRender(ctx, q, mode); |
} |
|
|
void APIENTRY |
_mesa_EndConditionalRender(void) |
{ |
GET_CURRENT_CONTEXT(ctx); |
|
FLUSH_VERTICES(ctx, 0x0); |
|
if (!ctx->Extensions.NV_conditional_render || !ctx->Query.CondRenderQuery) { |
_mesa_error(ctx, GL_INVALID_OPERATION, "glEndConditionalRender()"); |
return; |
} |
|
if (ctx->Driver.EndConditionalRender) |
ctx->Driver.EndConditionalRender(ctx, ctx->Query.CondRenderQuery); |
|
ctx->Query.CondRenderQuery = NULL; |
ctx->Query.CondRenderMode = GL_NONE; |
} |
|
|
/** |
* This function is called by software rendering commands (all point, |
* line triangle drawing, glClear, glDrawPixels, glCopyPixels, and |
* glBitmap, glBlitFramebuffer) to determine if subsequent drawing |
* commands should be |
* executed or discarded depending on the current conditional |
* rendering state. Ideally, this check would be implemented by the |
* GPU when doing hardware rendering. XXX should this function be |
* called via a new driver hook? |
* |
* \return GL_TRUE if we should render, GL_FALSE if we should discard |
*/ |
GLboolean |
_mesa_check_conditional_render(struct gl_context *ctx) |
{ |
struct gl_query_object *q = ctx->Query.CondRenderQuery; |
|
if (!q) { |
/* no query in progress - draw normally */ |
return GL_TRUE; |
} |
|
switch (ctx->Query.CondRenderMode) { |
case GL_QUERY_BY_REGION_WAIT: |
/* fall-through */ |
case GL_QUERY_WAIT: |
if (!q->Ready) { |
ctx->Driver.WaitQuery(ctx, q); |
} |
return q->Result > 0; |
case GL_QUERY_BY_REGION_NO_WAIT: |
/* fall-through */ |
case GL_QUERY_NO_WAIT: |
return q->Ready ? (q->Result > 0) : GL_TRUE; |
default: |
_mesa_problem(ctx, "Bad cond render mode %s in " |
" _mesa_check_conditional_render()", |
_mesa_lookup_enum_by_nr(ctx->Query.CondRenderMode)); |
return GL_TRUE; |
} |
} |