#include "glheader.h"
#include "context.h"
#include "macros.h"
#include "points.h"
#include "texstate.h"
#include "mtypes.h"
void GLAPIENTRY
_mesa_PointSize( GLfloat size )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (size <= 0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glPointSize" );
return;
}
if (ctx->Point.Size == size)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.Size = size;
ctx->Point._Size = CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize);
if (ctx->Driver.PointSize)
ctx->Driver.PointSize(ctx, size);
}
#if _HAVE_FULL_GL
void GLAPIENTRY
_mesa_PointParameteriNV( GLenum pname, GLint param )
{
const GLfloat value = (GLfloat) param;
_mesa_PointParameterfvEXT(pname, &value);
}
void GLAPIENTRY
_mesa_PointParameterivNV( GLenum pname, const GLint *params )
{
GLfloat p[3];
p[0] = (GLfloat) params[0];
if (pname == GL_DISTANCE_ATTENUATION_EXT) {
p[1] = (GLfloat) params[1];
p[2] = (GLfloat) params[2];
}
_mesa_PointParameterfvEXT(pname, p);
}
void GLAPIENTRY
_mesa_PointParameterfEXT( GLenum pname, GLfloat param)
{
_mesa_PointParameterfvEXT(pname, ¶m);
}
void GLAPIENTRY
_mesa_PointParameterfvEXT( GLenum pname, const GLfloat *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_DISTANCE_ATTENUATION_EXT:
if (ctx->Extensions.EXT_point_parameters) {
if (TEST_EQ_3V(ctx->Point.Params, params))
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
COPY_3V(ctx->Point.Params, params);
ctx->Point._Attenuated = (ctx->Point.Params[0] != 1.0 ||
ctx->Point.Params[1] != 0.0 ||
ctx->Point.Params[2] != 0.0);
if (ctx->Point._Attenuated)
ctx->_TriangleCaps |= DD_POINT_ATTEN;
else
ctx->_TriangleCaps &= ~DD_POINT_ATTEN;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
case GL_POINT_SIZE_MIN_EXT:
if (ctx->Extensions.EXT_point_parameters) {
if (params[0] < 0.0F) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glPointParameterf[v]{EXT,ARB}(param)" );
return;
}
if (ctx->Point.MinSize == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.MinSize = params[0];
ctx->Point._Size = CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
case GL_POINT_SIZE_MAX_EXT:
if (ctx->Extensions.EXT_point_parameters) {
if (params[0] < 0.0F) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glPointParameterf[v]{EXT,ARB}(param)" );
return;
}
if (ctx->Point.MaxSize == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.MaxSize = params[0];
ctx->Point._Size = CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
case GL_POINT_FADE_THRESHOLD_SIZE_EXT:
if (ctx->Extensions.EXT_point_parameters) {
if (params[0] < 0.0F) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glPointParameterf[v]{EXT,ARB}(param)" );
return;
}
if (ctx->Point.Threshold == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.Threshold = params[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
case GL_POINT_SPRITE_R_MODE_NV:
if (ctx->Extensions.NV_point_sprite) {
GLenum value = (GLenum) params[0];
if (value != GL_ZERO && value != GL_S && value != GL_R) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glPointParameterf[v]{EXT,ARB}(param)");
return;
}
if (ctx->Point.SpriteRMode == value)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.SpriteRMode = value;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
case GL_POINT_SPRITE_COORD_ORIGIN:
if (ctx->Extensions.ARB_point_sprite) {
GLenum value = (GLenum) params[0];
if (value != GL_LOWER_LEFT && value != GL_UPPER_LEFT) {
_mesa_error(ctx, GL_INVALID_VALUE,
"glPointParameterf[v]{EXT,ARB}(param)");
return;
}
if (ctx->Point.SpriteOrigin == value)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.SpriteOrigin = value;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)");
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM,
"glPointParameterf[v]{EXT,ARB}(pname)" );
return;
}
if (ctx->Driver.PointParameterfv)
(*ctx->Driver.PointParameterfv)(ctx, pname, params);
}
#endif
void
_mesa_init_point(GLcontext *ctx)
{
GLuint i;
ctx->Point.SmoothFlag = GL_FALSE;
ctx->Point.Size = 1.0;
ctx->Point._Size = 1.0;
ctx->Point.Params[0] = 1.0;
ctx->Point.Params[1] = 0.0;
ctx->Point.Params[2] = 0.0;
ctx->Point._Attenuated = GL_FALSE;
ctx->Point.MinSize = 0.0;
ctx->Point.MaxSize
= MAX2(ctx->Const.MaxPointSize, ctx->Const.MaxPointSizeAA);
ctx->Point.Threshold = 1.0;
ctx->Point.PointSprite = GL_FALSE;
ctx->Point.SpriteRMode = GL_ZERO;
ctx->Point.SpriteOrigin = GL_UPPER_LEFT;
for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
ctx->Point.CoordReplace[i] = GL_FALSE;
}
}