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/*
* Mesa 3-D graphics library
*
* Copyright (C) 2018 Rhys Perry
*
* 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
* 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 conservativeraster.c
* glConservativeRasterParameteriNV and glConservativeRasterParameterfNV functions
*/
#include "conservativeraster.h"
#include "context.h"
#include "enums.h"
static ALWAYS_INLINE void
conservative_raster_parameter(GLenum pname, GLfloat param,
bool no_error, const char *func)
{
GET_CURRENT_CONTEXT(ctx);
if (!no_error && !ctx->Extensions.NV_conservative_raster_dilate &&
!ctx->Extensions.NV_conservative_raster_pre_snap_triangles) {
_mesa_error(ctx, GL_INVALID_OPERATION, "%s not supported", func);
return;
}
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "%s(%s, %g)\n",
func, _mesa_enum_to_string(pname), param);
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_CONSERVATIVE_RASTER_DILATE_NV:
if (!no_error && !ctx->Extensions.NV_conservative_raster_dilate)
goto invalid_pname_enum;
if (!no_error && param<0.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(param=%g)", func, param);
return;
}
FLUSH_VERTICES(ctx, 0);
ctx->NewDriverState |=
ctx->DriverFlags.NewNvConservativeRasterizationParams;
ctx->ConservativeRasterDilate =
CLAMP(param,
ctx->Const.ConservativeRasterDilateRange[0],
ctx->Const.ConservativeRasterDilateRange[1]);
break;
case GL_CONSERVATIVE_RASTER_MODE_NV:
if (!no_error && !ctx->Extensions.NV_conservative_raster_pre_snap_triangles)
goto invalid_pname_enum;
if (!no_error && param != GL_CONSERVATIVE_RASTER_MODE_POST_SNAP_NV &&
param != GL_CONSERVATIVE_RASTER_MODE_PRE_SNAP_TRIANGLES_NV) {
_mesa_error(ctx, GL_INVALID_ENUM,
"%s(pname=%s)", func, _mesa_enum_to_string(param));
return;
}
FLUSH_VERTICES(ctx, 0);
ctx->NewDriverState |=
ctx->DriverFlags.NewNvConservativeRasterizationParams;
ctx->ConservativeRasterMode = param;
break;
default:
goto invalid_pname_enum;
break;
}
return;
invalid_pname_enum:
if (!no_error)
_mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)",
func, _mesa_enum_to_string(pname));
}
void GLAPIENTRY
_mesa_ConservativeRasterParameteriNV_no_error(GLenum pname, GLint param)
{
conservative_raster_parameter(pname, param, true,
"glConservativeRasterParameteriNV");
}
void GLAPIENTRY
_mesa_ConservativeRasterParameteriNV(GLenum pname, GLint param)
{
conservative_raster_parameter(pname, param, false,
"glConservativeRasterParameteriNV");
}
void GLAPIENTRY
_mesa_ConservativeRasterParameterfNV_no_error(GLenum pname, GLfloat param)
{
conservative_raster_parameter(pname, param, true,
"glConservativeRasterParameterfNV");
}
void GLAPIENTRY
_mesa_ConservativeRasterParameterfNV(GLenum pname, GLfloat param)
{
conservative_raster_parameter(pname, param, false,
"glConservativeRasterParameterfNV");
}
void
_mesa_init_conservative_raster(struct gl_context *ctx)
{
ctx->ConservativeRasterDilate = 0.0;
ctx->ConservativeRasterMode = GL_CONSERVATIVE_RASTER_MODE_POST_SNAP_NV;
}
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