*/
static void
compute_texgen(struct gl_context *ctx, const GLfloat vObj[4], const GLfloat vEye[4],
- const GLfloat normal[3], GLuint unit, GLfloat texcoord[4])
+ const GLfloat normal[3], GLfloat texcoord[4])
{
- const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit;
/* always compute sphere map terms, just in case */
GLfloat u[3], two_nu, rx, ry, rz, m, mInv;
void
_tnl_RasterPos(struct gl_context *ctx, const GLfloat vObj[4])
{
- if (ctx->VertexProgram._Enabled) {
- /* XXX implement this */
- _mesa_problem(ctx, "Vertex programs not implemented for glRasterPos");
+ GLfloat eye[4], clip[4], ndc[3], d;
+ GLfloat *norm, eyenorm[3];
+ GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
+
+ /* apply modelview matrix: eye = MV * obj */
+ TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, vObj );
+ /* apply projection matrix: clip = Proj * eye */
+ TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye );
+
+ /* clip to view volume. */
+ if (viewclip_point_z(clip) == 0) {
+ ctx->Current.RasterPosValid = GL_FALSE;
return;
}
- else {
- GLfloat eye[4], clip[4], ndc[3], d;
- GLfloat *norm, eyenorm[3];
- GLfloat *objnorm = ctx->Current.Attrib[VERT_ATTRIB_NORMAL];
-
- /* apply modelview matrix: eye = MV * obj */
- TRANSFORM_POINT( eye, ctx->ModelviewMatrixStack.Top->m, vObj );
- /* apply projection matrix: clip = Proj * eye */
- TRANSFORM_POINT( clip, ctx->ProjectionMatrixStack.Top->m, eye );
-
- /* clip to view volume. */
- if (viewclip_point_z(clip) == 0) {
+ if (!ctx->Transform.RasterPositionUnclipped) {
+ if (viewclip_point_xy(clip) == 0) {
ctx->Current.RasterPosValid = GL_FALSE;
return;
}
- if (!ctx->Transform.RasterPositionUnclipped) {
- if (viewclip_point_xy(clip) == 0) {
- ctx->Current.RasterPosValid = GL_FALSE;
- return;
- }
- }
+ }
- /* clip to user clipping planes */
- if (ctx->Transform.ClipPlanesEnabled && !userclip_point(ctx, clip)) {
- ctx->Current.RasterPosValid = GL_FALSE;
- return;
- }
+ /* clip to user clipping planes */
+ if (ctx->Transform.ClipPlanesEnabled && !userclip_point(ctx, clip)) {
+ ctx->Current.RasterPosValid = GL_FALSE;
+ return;
+ }
- /* 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;
- }
+ /* 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;
+ }
- /* update raster color */
- if (ctx->Light.Enabled) {
- /* lighting */
- shade_rastpos( ctx, vObj, norm,
- ctx->Current.RasterColor,
- ctx->Current.RasterSecondaryColor );
- }
- else {
- /* use current color */
- COPY_4FV(ctx->Current.RasterColor,
- ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
- COPY_4FV(ctx->Current.RasterSecondaryColor,
- ctx->Current.Attrib[VERT_ATTRIB_COLOR1]);
- }
+ /* update raster color */
+ if (ctx->Light.Enabled) {
+ /* lighting */
+ shade_rastpos( ctx, vObj, norm,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterSecondaryColor );
+ }
+ else {
+ /* use current color */
+ COPY_4FV(ctx->Current.RasterColor,
+ ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
+ COPY_4FV(ctx->Current.RasterSecondaryColor,
+ ctx->Current.Attrib[VERT_ATTRIB_COLOR1]);
+ }
- /* 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, vObj, eye, norm, u, tc);
- }
- TRANSFORM_POINT(ctx->Current.RasterTexCoords[u],
- ctx->TextureMatrixStack[u].Top->m, tc);
- }
+ /* texture coords */
+ {
+ GLfloat tc[4];
+ COPY_4V(tc, ctx->Current.Attrib[VERT_ATTRIB_TEX]);
+ if (ctx->Texture.Unit.TexGenEnabled) {
+ compute_texgen(ctx, vObj, eye, norm, tc);
}
-
- ctx->Current.RasterPosValid = GL_TRUE;
+ TRANSFORM_POINT(ctx->Current.RasterTexCoords,
+ ctx->TextureMatrixStack.Top->m, tc);
}
+ ctx->Current.RasterPosValid = GL_TRUE;
+
if (ctx->RenderMode == GL_SELECT) {
_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
}
projects / reactos.git / blobdiff