| 0,0 → 1,504 |
|---|
| /* |
| * Mesa 3-D graphics library |
| * |
| * 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"), |
| * 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 rastpos.c |
| * Raster position operations. |
| */ |
| |
| #include "glheader.h" |
| #include "context.h" |
| #include "feedback.h" |
| #include "macros.h" |
| #include "mtypes.h" |
| #include "rastpos.h" |
| #include "state.h" |
| #include "main/dispatch.h" |
| |
| |
| /** |
| * Helper function for all the RasterPos functions. |
| */ |
| static void |
| rasterpos(GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLfloat p[4]; |
| |
| p[0] = x; |
| p[1] = y; |
| p[2] = z; |
| p[3] = w; |
| |
| FLUSH_VERTICES(ctx, 0); |
| FLUSH_CURRENT(ctx, 0); |
| |
| if (ctx->NewState) |
| _mesa_update_state( ctx ); |
| |
| ctx->Driver.RasterPos(ctx, p); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2d(GLdouble x, GLdouble y) |
| { |
| rasterpos((GLfloat)x, (GLfloat)y, (GLfloat)0.0, (GLfloat)1.0); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2f(GLfloat x, GLfloat y) |
| { |
| rasterpos(x, y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2i(GLint x, GLint y) |
| { |
| rasterpos((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2s(GLshort x, GLshort y) |
| { |
| rasterpos(x, y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z) |
| { |
| rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z) |
| { |
| rasterpos(x, y, z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3i(GLint x, GLint y, GLint z) |
| { |
| rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3s(GLshort x, GLshort y, GLshort z) |
| { |
| rasterpos(x, y, z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w) |
| { |
| rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w) |
| { |
| rasterpos(x, y, z, w); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w) |
| { |
| rasterpos((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w) |
| { |
| rasterpos(x, y, z, w); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2dv(const GLdouble *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2fv(const GLfloat *v) |
| { |
| rasterpos(v[0], v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2iv(const GLint *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos2sv(const GLshort *v) |
| { |
| rasterpos(v[0], v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3dv(const GLdouble *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3fv(const GLfloat *v) |
| { |
| rasterpos(v[0], v[1], v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3iv(const GLint *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos3sv(const GLshort *v) |
| { |
| rasterpos(v[0], v[1], v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4dv(const GLdouble *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], |
| (GLfloat) v[2], (GLfloat) v[3]); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4fv(const GLfloat *v) |
| { |
| rasterpos(v[0], v[1], v[2], v[3]); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4iv(const GLint *v) |
| { |
| rasterpos((GLfloat) v[0], (GLfloat) v[1], |
| (GLfloat) v[2], (GLfloat) v[3]); |
| } |
| |
| void GLAPIENTRY |
| _mesa_RasterPos4sv(const GLshort *v) |
| { |
| rasterpos(v[0], v[1], v[2], v[3]); |
| } |
| |
| |
| /**********************************************************************/ |
| /*** GL_ARB_window_pos / GL_MESA_window_pos ***/ |
| /**********************************************************************/ |
| |
| |
| /** |
| * 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; |
| |
| FLUSH_VERTICES(ctx, 0); |
| FLUSH_CURRENT(ctx, 0); |
| |
| z2 = CLAMP(z, 0.0F, 1.0F) |
| * (ctx->ViewportArray[0].Far - ctx->ViewportArray[0].Near) |
| + ctx->ViewportArray[0].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 */ |
| 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); |
| |
| /* raster texcoord = current texcoord */ |
| { |
| GLuint texSet; |
| for (texSet = 0; texSet < ctx->Const.MaxTextureCoordUnits; texSet++) { |
| assert(texSet < ARRAY_SIZE(ctx->Current.RasterTexCoords)); |
| 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_WindowPos2d(GLdouble x, GLdouble y) |
| { |
| window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2f(GLfloat x, GLfloat y) |
| { |
| window_pos4f(x, y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2i(GLint x, GLint y) |
| { |
| window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2s(GLshort x, GLshort y) |
| { |
| window_pos4f(x, y, 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3d(GLdouble x, GLdouble y, GLdouble z) |
| { |
| window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3f(GLfloat x, GLfloat y, GLfloat z) |
| { |
| window_pos4f(x, y, z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3i(GLint x, GLint y, GLint z) |
| { |
| window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3s(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_WindowPos2dv(const GLdouble *v) |
| { |
| window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2fv(const GLfloat *v) |
| { |
| window_pos4f(v[0], v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2iv(const GLint *v) |
| { |
| window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos2sv(const GLshort *v) |
| { |
| window_pos4f(v[0], v[1], 0.0F, 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3dv(const GLdouble *v) |
| { |
| window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3fv(const GLfloat *v) |
| { |
| window_pos4f(v[0], v[1], v[2], 1.0); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3iv(const GLint *v) |
| { |
| window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F); |
| } |
| |
| void GLAPIENTRY |
| _mesa_WindowPos3sv(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]); |
| } |
| |
| |
| #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 |
| * __struct gl_contextRec::Current, and adds the extension entry points to the |
| * dispatcher. |
| */ |
| void _mesa_init_rastpos( struct gl_context * ctx ) |
| { |
| unsigned 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 ); |
| for (i = 0; i < ARRAY_SIZE(ctx->Current.RasterTexCoords); i++) |
| ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 ); |
| ctx->Current.RasterPosValid = GL_TRUE; |
| } |
| |
| /*@}*/ |