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-rw-r--r--src/mesa/main/rastpos.c140
1 files changed, 123 insertions, 17 deletions
diff --git a/src/mesa/main/rastpos.c b/src/mesa/main/rastpos.c
index 3c48a3afece..77d84a50b68 100644
--- a/src/mesa/main/rastpos.c
+++ b/src/mesa/main/rastpos.c
@@ -1,3 +1,8 @@
+/**
+ * \file rastpos.c
+ * Raster position operations.
+ */
+
/*
* Mesa 3-D graphics library
* Version: 5.1
@@ -24,7 +29,7 @@
#include "glheader.h"
-#include "clip.h"
+/*#include "clip.h"*/
#include "colormac.h"
#include "context.h"
#include "feedback.h"
@@ -36,13 +41,14 @@
#include "mtypes.h"
#include "math/m_matrix.h"
-#include "math/m_xform.h"
/**
* Clip a point against the view volume.
- * \param 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
viewclip_point( const GLfloat v[] )
@@ -58,7 +64,13 @@ viewclip_point( const GLfloat v[] )
}
-/* As above, but only clip test against far/near Z planes */
+/**
+ * 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[] )
{
@@ -71,11 +83,13 @@ viewclip_point_z( const GLfloat v[] )
}
-
/**
* Clip a point against the user clipping planes.
- * \param 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
userclip_point( GLcontext *ctx, const GLfloat v[] )
@@ -102,12 +116,12 @@ userclip_point( GLcontext *ctx, const GLfloat v[] )
* 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.
- * Input: ctx - the context
- * vertex - vertex location
- * normal - normal vector
- * Output: Rcolor - returned color
- * Rspec - returned specular color (if separate specular enabled)
- * Rindex - returned color index
+ * \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
shade_rastpos(GLcontext *ctx,
@@ -265,8 +279,23 @@ shade_rastpos(GLcontext *ctx,
/**
+ * 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)
@@ -305,7 +334,6 @@ raster_pos4f(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
ctx->Current.RasterColor,
ctx->Current.RasterSecondaryColor,
&ctx->Current.RasterIndex );
-
}
else {
/* use current color or index */
@@ -382,60 +410,70 @@ raster_pos4f(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2d(GLdouble x, GLdouble y)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2f(GLfloat x, GLfloat y)
{
_mesa_RasterPos4f(x, y, 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2i(GLint x, GLint y)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2s(GLshort x, GLshort y)
{
_mesa_RasterPos4f(x, y, 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3d(GLdouble x, GLdouble y, GLdouble z)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3f(GLfloat x, GLfloat y, GLfloat z)
{
_mesa_RasterPos4f(x, y, z, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3i(GLint x, GLint y, GLint z)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3s(GLshort x, GLshort y, GLshort z)
{
_mesa_RasterPos4f(x, y, z, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4d(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
+/** Calls raster_pos4f() */
void
_mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
{
@@ -443,66 +481,77 @@ _mesa_RasterPos4f(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
raster_pos4f(ctx, x, y, z, w);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4i(GLint x, GLint y, GLint z, GLint w)
{
_mesa_RasterPos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4s(GLshort x, GLshort y, GLshort z, GLshort w)
{
_mesa_RasterPos4f(x, y, z, w);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2dv(const GLdouble *v)
{
_mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2iv(const GLint *v)
{
_mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos2sv(const GLshort *v)
{
_mesa_RasterPos4f(v[0], v[1], 0.0F, 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3dv(const GLdouble *v)
{
_mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3iv(const GLint *v)
{
_mesa_RasterPos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos3sv(const GLshort *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], 1.0F);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4dv(const GLdouble *v)
{
@@ -510,12 +559,14 @@ _mesa_RasterPos4dv(const GLdouble *v)
(GLfloat) v[2], (GLfloat) v[3]);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4fv(const GLfloat *v)
{
_mesa_RasterPos4f(v[0], v[1], v[2], v[3]);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4iv(const GLint *v)
{
@@ -523,6 +574,7 @@ _mesa_RasterPos4iv(const GLint *v)
(GLfloat) v[2], (GLfloat) v[3]);
}
+/** Calls _mesa_RasterPos4f() */
void
_mesa_RasterPos4sv(const GLshort *v)
{
@@ -534,7 +586,7 @@ _mesa_RasterPos4sv(const GLshort *v)
/*** 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.
@@ -758,7 +810,7 @@ _mesa_WindowPos4svMESA(const GLshort *v)
window_pos4f(v[0], v[1], v[2], v[3]);
}
-
+#endif
#if 0
@@ -797,3 +849,57 @@ void glWindowPos4fMESA( GLfloat x, GLfloat y, GLfloat z, GLfloat w )
}
#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 );
+ ctx->Current.RasterIndex = 1;
+ 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;
+
+ /*
+ * For XFree86/DRI: tell libGL to add these functions to the dispatcher.
+ * Basically, we should add all extension functions above offset 577.
+ * This enables older libGL libraries to work with newer drivers that
+ * have newer extensions.
+ */
+ /* GL_ARB_window_pos aliases with GL_MESA_window_pos */
+ _glapi_add_entrypoint("glWindowPos2dARB", 513);
+ _glapi_add_entrypoint("glWindowPos2dvARB", 514);
+ _glapi_add_entrypoint("glWindowPos2fARB", 515);
+ _glapi_add_entrypoint("glWindowPos2fvARB", 516);
+ _glapi_add_entrypoint("glWindowPos2iARB", 517);
+ _glapi_add_entrypoint("glWindowPos2ivARB", 518);
+ _glapi_add_entrypoint("glWindowPos2sARB", 519);
+ _glapi_add_entrypoint("glWindowPos2svARB", 520);
+ _glapi_add_entrypoint("glWindowPos3dARB", 521);
+ _glapi_add_entrypoint("glWindowPos3dvARB", 522);
+ _glapi_add_entrypoint("glWindowPos3fARB", 523);
+ _glapi_add_entrypoint("glWindowPos3fvARB", 524);
+ _glapi_add_entrypoint("glWindowPos3iARB", 525);
+ _glapi_add_entrypoint("glWindowPos3ivARB", 526);
+ _glapi_add_entrypoint("glWindowPos3sARB", 527);
+ _glapi_add_entrypoint("glWindowPos3svARB", 528);
+}
+
+/*@}*/
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