-/* $Id: rastpos.c,v 1.17 2000/11/27 18:22:13 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.5.3
*
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 Brian Paul 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"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
+/**
+ * \file rastpos.c
+ * Raster position operations.
+ */
+
#include "glheader.h"
-#include "clip.h"
#include "colormac.h"
#include "context.h"
#include "feedback.h"
#include "light.h"
#include "macros.h"
-#include "mmath.h"
#include "rastpos.h"
#include "state.h"
#include "simple_list.h"
#include "mtypes.h"
#include "math/m_matrix.h"
-#include "math/m_xform.h"
-#endif
-/*
+/**
* Clip a point against the view volume.
- * Input: v - vertex-vector describing the point to clip
- * Return: 0 = outside view volume
- * 1 = inside view volume
+ *
+ * \param v vertex vector describing the point to clip.
+ *
+ * \return zero if outside view volume, or one if inside.
*/
-static GLuint gl_viewclip_point( const GLfloat v[] )
+static GLuint
+viewclip_point( const GLfloat v[] )
{
if ( v[0] > v[3] || v[0] < -v[3]
|| v[1] > v[3] || v[1] < -v[3]
}
}
-/*
+
+/**
+ * Clip a point against the far/near Z clipping planes.
+ *
+ * \param v vertex vector describing the point to clip.
+ *
+ * \return zero if outside view volume, or one if inside.
+ */
+static GLuint
+viewclip_point_z( const GLfloat v[] )
+{
+ if (v[2] > v[3] || v[2] < -v[3] ) {
+ return 0;
+ }
+ else {
+ return 1;
+ }
+}
+
+
+/**
* Clip a point against the user clipping planes.
- * Input: v - vertex-vector describing the point to clip.
- * Return: 0 = point was clipped
- * 1 = point not clipped
+ *
+ * \param ctx GL context.
+ * \param v vertex vector describing the point to clip.
+ *
+ * \return zero if the point was clipped, or one otherwise.
*/
-static GLuint gl_userclip_point( GLcontext* ctx, const GLfloat v[] )
+static GLuint
+userclip_point( GLcontext *ctx, const GLfloat v[] )
{
GLuint p;
for (p = 0; p < ctx->Const.MaxClipPlanes; p++) {
- if (ctx->Transform.ClipEnabled[p]) {
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
GLfloat dot = v[0] * ctx->Transform._ClipUserPlane[p][0]
+ v[1] * ctx->Transform._ClipUserPlane[p][1]
+ v[2] * ctx->Transform._ClipUserPlane[p][2]
}
-/* This has been split off to allow the normal shade routines to
- * get a little closer to the vertex buffer, and to use the
- * GLvector objects directly.
+/**
+ * Compute lighting for the raster position. Both RGB and CI modes computed.
+ * \param ctx the context
+ * \param vertex vertex location
+ * \param normal normal vector
+ * \param Rcolor returned color
+ * \param Rspec returned specular color (if separate specular enabled)
+ * \param Rindex returned color index
*/
-static void gl_shade_rastpos( GLcontext *ctx,
- GLfloat vertex[4],
- GLfloat normal[3],
- GLfloat Rcolor[4],
- GLuint *index )
+static void
+shade_rastpos(GLcontext *ctx,
+ const GLfloat vertex[4],
+ const GLfloat normal[3],
+ GLfloat Rcolor[4],
+ GLfloat Rspec[4],
+ GLfloat *Rindex)
{
- GLfloat (*base)[3] = ctx->Light._BaseColor;
- const GLchan *sumA = ctx->Light._BaseAlpha;
- struct gl_light *light;
- GLfloat color[4];
- GLfloat diffuse = 0, specular = 0;
+ /*const*/ GLfloat (*base)[3] = ctx->Light._BaseColor;
+ const struct gl_light *light;
+ GLfloat diffuseColor[4], specularColor[4]; /* for RGB mode only */
+ GLfloat diffuseCI = 0.0, specularCI = 0.0; /* for CI mode only */
- COPY_3V(color, base[0]);
- color[3] = CHAN_TO_FLOAT( sumA[0] );
+ _mesa_validate_all_lighting_tables( ctx );
+
+ COPY_3V(diffuseColor, base[0]);
+ diffuseColor[3] = CLAMP(
+ ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE][3], 0.0F, 1.0F );
+ ASSIGN_4V(specularColor, 0.0, 0.0, 0.0, 1.0);
foreach (light, &ctx->Light.EnabledList) {
- GLfloat n_dot_h;
GLfloat attenuation = 1.0;
- GLfloat VP[3];
+ GLfloat VP[3]; /* vector from vertex to light pos */
GLfloat n_dot_VP;
- GLfloat *h;
- GLfloat contrib[3];
- GLboolean normalized;
+ GLfloat diffuseContrib[3], specularContrib[3];
if (!(light->_Flags & LIGHT_POSITIONAL)) {
+ /* light at infinity */
COPY_3V(VP, light->_VP_inf_norm);
attenuation = light->_VP_inf_spot_attenuation;
}
else {
+ /* local/positional light */
GLfloat d;
-
+
+ /* VP = vector from vertex pos to light[i].pos */
SUB_3V(VP, light->_Position, vertex);
- d = LEN_3FV( VP );
-
- if ( d > 1e-6) {
+ /* d = length(VP) */
+ d = (GLfloat) LEN_3FV( VP );
+ if (d > 1.0e-6) {
+ /* normalize VP */
GLfloat invd = 1.0F / d;
SELF_SCALE_SCALAR_3V(VP, invd);
}
+
+ /* atti */
attenuation = 1.0F / (light->ConstantAttenuation + d *
(light->LinearAttenuation + d *
light->QuadraticAttenuation));
-
- if (light->_Flags & LIGHT_SPOT)
- {
+
+ if (light->_Flags & LIGHT_SPOT) {
GLfloat PV_dot_dir = - DOT3(VP, light->_NormDirection);
-
+
if (PV_dot_dir<light->_CosCutoff) {
continue;
}
- else
- {
+ else {
double x = PV_dot_dir * (EXP_TABLE_SIZE-1);
int k = (int) x;
GLfloat spot = (GLfloat) (light->_SpotExpTable[k][0]
n_dot_VP = DOT3( normal, VP );
if (n_dot_VP < 0.0F) {
- ACC_SCALE_SCALAR_3V(color, attenuation, light->_MatAmbient[0]);
+ ACC_SCALE_SCALAR_3V(diffuseColor, attenuation, light->_MatAmbient[0]);
continue;
}
- COPY_3V(contrib, light->_MatAmbient[0]);
- ACC_SCALE_SCALAR_3V(contrib, n_dot_VP, light->_MatDiffuse[0]);
- diffuse += n_dot_VP * light->_dli * attenuation;
+ /* Ambient + diffuse */
+ COPY_3V(diffuseContrib, light->_MatAmbient[0]);
+ ACC_SCALE_SCALAR_3V(diffuseContrib, n_dot_VP, light->_MatDiffuse[0]);
+ diffuseCI += n_dot_VP * light->_dli * attenuation;
+ /* Specular */
{
+ const GLfloat *h;
+ GLfloat n_dot_h;
+
+ ASSIGN_3V(specularContrib, 0.0, 0.0, 0.0);
+
if (ctx->Light.Model.LocalViewer) {
GLfloat v[3];
COPY_3V(v, vertex);
NORMALIZE_3FV(v);
SUB_3V(VP, VP, v);
+ NORMALIZE_3FV(VP);
h = VP;
- normalized = 0;
}
else if (light->_Flags & LIGHT_POSITIONAL) {
+ ACC_3V(VP, ctx->_EyeZDir);
+ NORMALIZE_3FV(VP);
h = VP;
- ACC_3V(h, ctx->_EyeZDir);
- normalized = 0;
}
else {
h = light->_h_inf_norm;
- normalized = 1;
}
-
+
n_dot_h = DOT3(normal, h);
if (n_dot_h > 0.0F) {
- struct gl_material *mat = &ctx->Light.Material[0];
GLfloat spec_coef;
- GLfloat shininess = mat->Shininess;
-
- if (!normalized) {
- n_dot_h *= n_dot_h;
- n_dot_h /= LEN_SQUARED_3FV( h );
- shininess *= .5;
- }
-
GET_SHINE_TAB_ENTRY( ctx->_ShineTable[0], n_dot_h, spec_coef );
if (spec_coef > 1.0e-10) {
- ACC_SCALE_SCALAR_3V( contrib, spec_coef,
- light->_MatSpecular[0]);
- specular += spec_coef * light->_sli * attenuation;
+ if (ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) {
+ ACC_SCALE_SCALAR_3V( specularContrib, spec_coef,
+ light->_MatSpecular[0]);
+ }
+ else {
+ ACC_SCALE_SCALAR_3V( diffuseContrib, spec_coef,
+ light->_MatSpecular[0]);
+ }
+ /*assert(light->_sli > 0.0);*/
+ specularCI += spec_coef * light->_sli * attenuation;
}
}
}
- ACC_SCALE_SCALAR_3V( color, attenuation, contrib );
+ ACC_SCALE_SCALAR_3V( diffuseColor, attenuation, diffuseContrib );
+ ACC_SCALE_SCALAR_3V( specularColor, attenuation, specularContrib );
}
- if (ctx->Visual.RGBAflag) {
- Rcolor[0] = CLAMP(color[0], 0.0F, 1.0F);
- Rcolor[1] = CLAMP(color[1], 0.0F, 1.0F);
- Rcolor[2] = CLAMP(color[2], 0.0F, 1.0F);
- Rcolor[3] = CLAMP(color[3], 0.0F, 1.0F);
+ if (ctx->Visual.rgbMode) {
+ Rcolor[0] = CLAMP(diffuseColor[0], 0.0F, 1.0F);
+ Rcolor[1] = CLAMP(diffuseColor[1], 0.0F, 1.0F);
+ Rcolor[2] = CLAMP(diffuseColor[2], 0.0F, 1.0F);
+ Rcolor[3] = CLAMP(diffuseColor[3], 0.0F, 1.0F);
+ Rspec[0] = CLAMP(specularColor[0], 0.0F, 1.0F);
+ Rspec[1] = CLAMP(specularColor[1], 0.0F, 1.0F);
+ Rspec[2] = CLAMP(specularColor[2], 0.0F, 1.0F);
+ Rspec[3] = CLAMP(specularColor[3], 0.0F, 1.0F);
}
else {
- struct gl_material *mat = &ctx->Light.Material[0];
- GLfloat d_a = mat->DiffuseIndex - mat->AmbientIndex;
- GLfloat s_a = mat->SpecularIndex - mat->AmbientIndex;
- GLfloat ind = mat->AmbientIndex
- + diffuse * (1.0F-specular) * d_a
- + specular * s_a;
- if (ind > mat->SpecularIndex) {
- ind = mat->SpecularIndex;
+ GLfloat *ind = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_INDEXES];
+ GLfloat d_a = ind[MAT_INDEX_DIFFUSE] - ind[MAT_INDEX_AMBIENT];
+ GLfloat s_a = ind[MAT_INDEX_SPECULAR] - ind[MAT_INDEX_AMBIENT];
+ GLfloat i = (ind[MAT_INDEX_AMBIENT]
+ + diffuseCI * (1.0F-specularCI) * d_a
+ + specularCI * s_a);
+ if (i > ind[MAT_INDEX_SPECULAR]) {
+ i = ind[MAT_INDEX_SPECULAR];
}
- *index = (GLuint) (GLint) ind;
+ *Rindex = i;
}
-
}
-/*
- * Caller: context->API.RasterPos4f
+
+/**
+ * Do texgen needed for glRasterPos.
+ * \param ctx rendering context
+ * \param vObj object-space vertex coordinate
+ * \param vEye eye-space vertex coordinate
+ * \param normal vertex normal
+ * \param unit texture unit number
+ * \param texcoord incoming texcoord and resulting texcoord
*/
-static void raster_pos4f( GLcontext *ctx,
- GLfloat x, GLfloat y, GLfloat z, GLfloat w )
+static void
+compute_texgen(GLcontext *ctx, const GLfloat vObj[4], const GLfloat vEye[4],
+ const GLfloat normal[3], GLuint unit, GLfloat texcoord[4])
{
- GLfloat v[4], eye[4], clip[4], ndc[3], d;
-
- /* KW: Added this test, which is in the spec. We can't do this
- * inside begin/end any more because the ctx->Current values
- * aren't uptodate during that period.
- */
- FLUSH_TNL_RETURN(ctx, (FLUSH_INSIDE_BEGIN_END|
- FLUSH_STORED_VERTICES|
- FLUSH_UPDATE_CURRENT), "raster_pos4f");
-
- if (ctx->NewState)
- gl_update_state( ctx );
-
- ASSIGN_4V( v, x, y, z, w );
- TRANSFORM_POINT( eye, ctx->ModelView.m, v );
-
- /* raster color */
- if (ctx->Light.Enabled)
- {
- GLfloat *norm, eyenorm[3];
- GLfloat *objnorm = ctx->Current.Normal;
-
- if (ctx->_NeedEyeCoords) {
- GLfloat *inv = ctx->ModelView.inv;
- TRANSFORM_NORMAL( eyenorm, objnorm, inv );
- norm = eyenorm;
- } else {
- norm = objnorm;
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+ /* always compute sphere map terms, just in case */
+ GLfloat u[3], two_nu, rx, ry, rz, m, mInv;
+ COPY_3V(u, vEye);
+ NORMALIZE_3FV(u);
+ two_nu = 2.0F * DOT3(normal, u);
+ rx = u[0] - normal[0] * two_nu;
+ ry = u[1] - normal[1] * two_nu;
+ rz = u[2] - normal[2] * two_nu;
+ m = rx * rx + ry * ry + (rz + 1.0F) * (rz + 1.0F);
+ if (m > 0.0F)
+ mInv = 0.5F * _mesa_inv_sqrtf(m);
+ else
+ mInv = 0.0F;
+
+ if (texUnit->TexGenEnabled & S_BIT) {
+ switch (texUnit->GenModeS) {
+ case GL_OBJECT_LINEAR:
+ texcoord[0] = DOT4(vObj, texUnit->ObjectPlaneS);
+ break;
+ case GL_EYE_LINEAR:
+ texcoord[0] = DOT4(vEye, texUnit->EyePlaneS);
+ break;
+ case GL_SPHERE_MAP:
+ texcoord[0] = rx * mInv + 0.5F;
+ break;
+ case GL_REFLECTION_MAP:
+ texcoord[0] = rx;
+ break;
+ case GL_NORMAL_MAP:
+ texcoord[0] = normal[0];
+ break;
+ default:
+ _mesa_problem(ctx, "Bad S texgen in compute_texgen()");
+ return;
}
+ }
- gl_shade_rastpos( ctx, v, norm,
- ctx->Current.RasterColor,
- &ctx->Current.RasterIndex );
-
+ if (texUnit->TexGenEnabled & T_BIT) {
+ switch (texUnit->GenModeT) {
+ case GL_OBJECT_LINEAR:
+ texcoord[1] = DOT4(vObj, texUnit->ObjectPlaneT);
+ break;
+ case GL_EYE_LINEAR:
+ texcoord[1] = DOT4(vEye, texUnit->EyePlaneT);
+ break;
+ case GL_SPHERE_MAP:
+ texcoord[1] = ry * mInv + 0.5F;
+ break;
+ case GL_REFLECTION_MAP:
+ texcoord[1] = ry;
+ break;
+ case GL_NORMAL_MAP:
+ texcoord[1] = normal[1];
+ break;
+ default:
+ _mesa_problem(ctx, "Bad T texgen in compute_texgen()");
+ return;
+ }
}
- else {
- /* use current color or index */
- if (ctx->Visual.RGBAflag) {
- ctx->Current.RasterColor[0] = CHAN_TO_FLOAT(ctx->Current.Color[0]);
- ctx->Current.RasterColor[1] = CHAN_TO_FLOAT(ctx->Current.Color[1]);
- ctx->Current.RasterColor[2] = CHAN_TO_FLOAT(ctx->Current.Color[2]);
- ctx->Current.RasterColor[3] = CHAN_TO_FLOAT(ctx->Current.Color[3]);
+
+ if (texUnit->TexGenEnabled & R_BIT) {
+ switch (texUnit->GenModeR) {
+ case GL_OBJECT_LINEAR:
+ texcoord[2] = DOT4(vObj, texUnit->ObjectPlaneR);
+ break;
+ case GL_EYE_LINEAR:
+ texcoord[2] = DOT4(vEye, texUnit->EyePlaneR);
+ break;
+ case GL_REFLECTION_MAP:
+ texcoord[2] = rz;
+ break;
+ case GL_NORMAL_MAP:
+ texcoord[2] = normal[2];
+ break;
+ default:
+ _mesa_problem(ctx, "Bad R texgen in compute_texgen()");
+ return;
}
- else {
- ctx->Current.RasterIndex = ctx->Current.Index;
+ }
+
+ if (texUnit->TexGenEnabled & Q_BIT) {
+ switch (texUnit->GenModeQ) {
+ case GL_OBJECT_LINEAR:
+ texcoord[3] = DOT4(vObj, texUnit->ObjectPlaneQ);
+ break;
+ case GL_EYE_LINEAR:
+ texcoord[3] = DOT4(vEye, texUnit->EyePlaneQ);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad Q texgen in compute_texgen()");
+ return;
}
}
+}
- /* compute raster distance */
- ctx->Current.RasterDistance = (GLfloat)
- GL_SQRT( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] );
- /* apply projection matrix: clip = Proj * eye */
- TRANSFORM_POINT( clip, ctx->ProjectionMatrix.m, eye );
- /* clip to view volume */
- if (gl_viewclip_point( clip )==0) {
- ctx->Current.RasterPosValid = GL_FALSE;
- return;
- }
+/**
+ * Set the raster position for pixel operations.
+ *
+ * All glRasterPos command call this function to update the current
+ * raster position.
+ *
+ * \param ctx GL context.
+ * \param x x coordinate for the raster position.
+ * \param y y coordinate for the raster position.
+ * \param z z coordinate for the raster position.
+ * \param w w coordinate for the raster position.
+ *
+ * \sa Called by _mesa_RasterPos4f().
+ *
+ * Flushes the vertices, transforms and clips the vertex coordinates, and
+ * finally sets the current raster position and associated data in
+ * __GLcontextRec::Current. When in selection mode calls
+ * _mesa_update_hitflag() with the current raster position.
+ */
+static void
+raster_pos4f(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_CURRENT(ctx, 0);
- /* clip to user clipping planes */
- if ( ctx->Transform._AnyClip &&
- gl_userclip_point(ctx, clip) == 0)
- {
- ctx->Current.RasterPosValid = GL_FALSE;
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+
+ if (ctx->VertexProgram._Enabled) {
+ /* XXX implement this */
+ _mesa_problem(ctx, "Vertex programs not implemented for glRasterPos");
return;
}
+ else {
+ GLfloat obj[4], eye[4], clip[4], ndc[3], d;
+ GLfloat *norm, eyenorm[3];
+ GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
+
+ ASSIGN_4V( obj, x, y, z, w );
+ /* apply modelview matrix: eye = MV * obj */
+ TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, obj );
+ /* apply projection matrix: clip = Proj * eye */
+ TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye );
+
+ /* clip to view volume */
+ if (ctx->Transform.RasterPositionUnclipped) {
+ /* GL_IBM_rasterpos_clip: only clip against Z */
+ if (viewclip_point_z(clip) == 0) {
+ ctx->Current.RasterPosValid = GL_FALSE;
+ return;
+ }
+ }
+ else if (viewclip_point(clip) == 0) {
+ /* Normal OpenGL behaviour */
+ ctx->Current.RasterPosValid = GL_FALSE;
+ return;
+ }
- /* ndc = clip / W */
- ASSERT( clip[3]!=0.0 );
- d = 1.0F / clip[3];
- ndc[0] = clip[0] * d;
- ndc[1] = clip[1] * d;
- ndc[2] = clip[2] * d;
-
- ctx->Current.RasterPos[0] = (ndc[0] * ctx->Viewport._WindowMap.m[MAT_SX] +
- ctx->Viewport._WindowMap.m[MAT_TX]);
- ctx->Current.RasterPos[1] = (ndc[1] * ctx->Viewport._WindowMap.m[MAT_SY] +
- ctx->Viewport._WindowMap.m[MAT_TY]);
- ctx->Current.RasterPos[2] = (ndc[2] * ctx->Viewport._WindowMap.m[MAT_SZ] +
- ctx->Viewport._WindowMap.m[MAT_TZ]) / ctx->Visual.DepthMaxF;
- ctx->Current.RasterPos[3] = clip[3];
- ctx->Current.RasterPosValid = GL_TRUE;
+ /* clip to user clipping planes */
+ if (ctx->Transform.ClipPlanesEnabled && !userclip_point(ctx, clip)) {
+ ctx->Current.RasterPosValid = GL_FALSE;
+ return;
+ }
- /* FOG??? */
+ /* ndc = clip / W */
+ d = (clip[3] == 0.0F) ? 1.0F : 1.0F / clip[3];
+ ndc[0] = clip[0] * d;
+ ndc[1] = clip[1] * d;
+ ndc[2] = clip[2] * d;
+ /* wincoord = viewport_mapping(ndc) */
+ ctx->Current.RasterPos[0] = (ndc[0] * ctx->Viewport._WindowMap.m[MAT_SX]
+ + ctx->Viewport._WindowMap.m[MAT_TX]);
+ ctx->Current.RasterPos[1] = (ndc[1] * ctx->Viewport._WindowMap.m[MAT_SY]
+ + ctx->Viewport._WindowMap.m[MAT_TY]);
+ ctx->Current.RasterPos[2] = (ndc[2] * ctx->Viewport._WindowMap.m[MAT_SZ]
+ + ctx->Viewport._WindowMap.m[MAT_TZ])
+ / ctx->DrawBuffer->_DepthMaxF;
+ ctx->Current.RasterPos[3] = clip[3];
+
+ /* compute raster distance */
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
+ else
+ ctx->Current.RasterDistance =
+ SQRTF( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] );
+
+ /* compute transformed normal vector (for lighting or texgen) */
+ if (ctx->_NeedEyeCoords) {
+ const GLfloat *inv = ctx->ModelviewMatrixStack.Top->inv;
+ TRANSFORM_NORMAL( eyenorm, objnorm, inv );
+ norm = eyenorm;
+ }
+ else {
+ norm = objnorm;
+ }
- {
- GLuint texSet;
- for (texSet = 0; texSet < ctx->Const.MaxTextureUnits; texSet++) {
- COPY_4FV( ctx->Current.RasterMultiTexCoord[texSet],
- ctx->Current.Texcoord[texSet] );
+ /* update raster color */
+ if (ctx->Light.Enabled) {
+ /* lighting */
+ shade_rastpos( ctx, obj, norm,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterSecondaryColor,
+ &ctx->Current.RasterIndex );
+ }
+ else {
+ /* use current color or index */
+ if (ctx->Visual.rgbMode) {
+ COPY_4FV(ctx->Current.RasterColor,
+ ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
+ COPY_4FV(ctx->Current.RasterSecondaryColor,
+ ctx->Current.Attrib[VERT_ATTRIB_COLOR1]);
+ }
+ else {
+ ctx->Current.RasterIndex
+ = ctx->Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0];
+ }
}
- }
- if (ctx->RenderMode==GL_SELECT) {
- gl_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ /* texture coords */
+ {
+ GLuint u;
+ for (u = 0; u < ctx->Const.MaxTextureCoordUnits; u++) {
+ GLfloat tc[4];
+ COPY_4V(tc, ctx->Current.Attrib[VERT_ATTRIB_TEX0 + u]);
+ if (ctx->Texture.Unit[u].TexGenEnabled) {
+ compute_texgen(ctx, obj, eye, norm, u, tc);
+ }
+ TRANSFORM_POINT(ctx->Current.RasterTexCoords[u],
+ ctx->TextureMatrixStack[u].Top->m, tc);
+ }
+ }
+
+ ctx->Current.RasterPosValid = GL_TRUE;
}
+ if (ctx->RenderMode == GL_SELECT) {
+ _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ }
}
-
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2d(GLdouble x, GLdouble y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2f(GLfloat x, GLfloat y)
{
_mesa_RasterPos4f(x, y, 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2i(GLint x, GLint y)
{
- _mesa_RasterPos4f(x, y, 0.0F, 1.0F);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2s(GLshort x, GLshort y)
{
_mesa_RasterPos4f(x, y, 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
{
_mesa_RasterPos4f(x, y, z, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3i(GLint x, GLint y, GLint z)
{
- _mesa_RasterPos4f(x, y, z, 1.0F);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
{
_mesa_RasterPos4f(x, y, z, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
{
- _mesa_RasterPos4f(x, y, z, w);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+/** Calls raster_pos4f() */
+void GLAPIENTRY
_mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
{
GET_CURRENT_CONTEXT(ctx);
raster_pos4f(ctx, x, y, z, w);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
{
- _mesa_RasterPos4f(x, y, z, w);
+ _mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
{
_mesa_RasterPos4f(x, y, z, w);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2sv(const GLshort *v)
{
_mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos3sv(const GLshort *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4dv(const GLdouble *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4iv(const GLint *v)
{
- _mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
+ _mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos4sv(const GLshort *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
}
+
+
+/**********************************************************************/
+/*** GL_ARB_window_pos / GL_MESA_window_pos ***/
+/**********************************************************************/
+
+#if FEATURE_windowpos
+/**
+ * All glWindowPosMESA and glWindowPosARB commands call this function to
+ * update the current raster position.
+ */
+static void
+window_pos3f(GLfloat x, GLfloat y, GLfloat z)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLfloat z2;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ FLUSH_CURRENT(ctx, 0);
+
+ z2 = CLAMP(z, 0.0F, 1.0F) * (ctx->Viewport.Far - ctx->Viewport.Near)
+ + ctx->Viewport.Near;
+
+ /* set raster position */
+ ctx->Current.RasterPos[0] = x;
+ ctx->Current.RasterPos[1] = y;
+ ctx->Current.RasterPos[2] = z2;
+ ctx->Current.RasterPos[3] = 1.0F;
+
+ ctx->Current.RasterPosValid = GL_TRUE;
+
+ if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT)
+ ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0];
+ else
+ ctx->Current.RasterDistance = 0.0;
+
+ /* raster color = current color or index */
+ if (ctx->Visual.rgbMode) {
+ ctx->Current.RasterColor[0]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][0], 0.0F, 1.0F);
+ ctx->Current.RasterColor[1]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][1], 0.0F, 1.0F);
+ ctx->Current.RasterColor[2]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][2], 0.0F, 1.0F);
+ ctx->Current.RasterColor[3]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR0][3], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[0]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][0], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[1]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][1], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[2]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][2], 0.0F, 1.0F);
+ ctx->Current.RasterSecondaryColor[3]
+ = CLAMP(ctx->Current.Attrib[VERT_ATTRIB_COLOR1][3], 0.0F, 1.0F);
+ }
+ else {
+ ctx->Current.RasterIndex
+ = ctx->Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0];
+ }
+
+ /* raster texcoord = current texcoord */
+ {
+ GLuint texSet;
+ for (texSet = 0; texSet < ctx->Const.MaxTextureCoordUnits; texSet++) {
+ COPY_4FV( ctx->Current.RasterTexCoords[texSet],
+ ctx->Current.Attrib[VERT_ATTRIB_TEX0 + texSet] );
+ }
+ }
+
+ if (ctx->RenderMode==GL_SELECT) {
+ _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ }
+}
+
+
+/* This is just to support the GL_MESA_window_pos version */
+static void
+window_pos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ window_pos3f(x, y, z);
+ ctx->Current.RasterPos[3] = w;
+}
+
+
+void GLAPIENTRY
+_mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
+{
+ window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2iMESA(GLint x, GLint y)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2sMESA(GLshort x, GLshort y)
+{
+ window_pos4f(x, y, 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
+{
+ window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
+{
+ window_pos4f(x, y, z, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+ window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
+{
+ window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
+{
+ window_pos4f(x, y, z, w);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos2svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], 0.0F, 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], v[2], 1.0);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos3svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], v[2], 1.0F);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4dvMESA(const GLdouble *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4fvMESA(const GLfloat *v)
+{
+ window_pos4f(v[0], v[1], v[2], v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4ivMESA(const GLint *v)
+{
+ window_pos4f((GLfloat) v[0], (GLfloat) v[1],
+ (GLfloat) v[2], (GLfloat) v[3]);
+}
+
+void GLAPIENTRY
+_mesa_WindowPos4svMESA(const GLshort *v)
+{
+ window_pos4f(v[0], v[1], v[2], v[3]);
+}
+
+#endif
+
+#if 0
+
+/*
+ * OpenGL implementation of glWindowPos*MESA()
+ */
+void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
+{
+ GLfloat fx, fy;
+
+ /* Push current matrix mode and viewport attributes */
+ glPushAttrib( GL_TRANSFORM_BIT | GL_VIEWPORT_BIT );
+
+ /* Setup projection parameters */
+ glMatrixMode( GL_PROJECTION );
+ glPushMatrix();
+ glLoadIdentity();
+ glMatrixMode( GL_MODELVIEW );
+ glPushMatrix();
+ glLoadIdentity();
+
+ glDepthRange( z, z );
+ glViewport( (int) x - 1, (int) y - 1, 2, 2 );
+
+ /* set the raster (window) position */
+ fx = x - (int) x;
+ fy = y - (int) y;
+ glRasterPos4f( fx, fy, 0.0, w );
+
+ /* restore matrices, viewport and matrix mode */
+ glPopMatrix();
+ glMatrixMode( GL_PROJECTION );
+ glPopMatrix();
+
+ glPopAttrib();
+}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization */
+/**********************************************************************/
+/*@{*/
+
+/**
+ * Initialize the context current raster position information.
+ *
+ * \param ctx GL context.
+ *
+ * Initialize the current raster position information in
+ * __GLcontextRec::Current, and adds the extension entry points to the
+ * dispatcher.
+ */
+void _mesa_init_rastpos( GLcontext * ctx )
+{
+ int i;
+
+ ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterDistance = 0.0;
+ ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
+ ASSIGN_4V( ctx->Current.RasterSecondaryColor, 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterIndex = 1.0;
+ for (i=0; i<MAX_TEXTURE_UNITS; i++)
+ ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterPosValid = GL_TRUE;
+}
+
+/*@}*/
projects / mesa.git / blobdiff