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Diffstat (limited to 'mesalib/src/mesa/main/rastpos.c')
-rw-r--r--mesalib/src/mesa/main/rastpos.c508
1 files changed, 508 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/rastpos.c b/mesalib/src/mesa/main/rastpos.c
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index 000000000..9f309d6ab
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+++ b/mesalib/src/mesa/main/rastpos.c
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+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.3
+ *
+ * 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
+ * BRIAN PAUL 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 "rastpos.h"
+#include "state.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;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ 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 ***/
+/**********************************************************************/
+
+#if FEATURE_drawpix
+/**
+ * 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_COORD_UNITS; i++)
+ ASSIGN_4V( ctx->Current.RasterTexCoords[i], 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterPosValid = GL_TRUE;
+}
+
+/*@}*/
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