+/**
+ * \file rastpos.c
+ * Raster position operations.
+ */
+
/*
* Mesa 3-D graphics library
* Version: 5.1
#include "glheader.h"
-#include "clip.h"
+/*#include "clip.h"*/
#include "colormac.h"
#include "context.h"
#include "feedback.h"
#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[] )
}
-/* 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[] )
{
}
-
/**
* 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[] )
* 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,
const GLfloat normal[3],
GLfloat Rcolor[4],
GLfloat Rspec[4],
- GLuint *Rindex)
+ GLfloat *Rindex)
{
GLfloat (*base)[3] = ctx->Light._BaseColor;
struct gl_light *light;
_mesa_validate_all_lighting_tables( ctx );
COPY_3V(diffuseColor, base[0]);
- diffuseColor[3] = CLAMP( ctx->Light.Material[0].Diffuse[3], 0.0F, 1.0F );
+ 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, 0.0);
foreach (light, &ctx->Light.EnabledList) {
n_dot_h = DOT3(normal, h);
if (n_dot_h > 0.0F) {
- const struct gl_material *mat = &ctx->Light.Material[0];
+ GLfloat (*mat)[4] = ctx->Light.Material.Attrib;
GLfloat spec_coef;
- GLfloat shininess = mat->Shininess;
+ GLfloat shininess = mat[MAT_ATTRIB_FRONT_SHININESS][0];
if (!normalized) {
n_dot_h *= n_dot_h;
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]
+ + diffuse * (1.0F-specular) * d_a
+ + specular * s_a);
+ if (i > ind[MAT_INDEX_SPECULAR]) {
+ i = ind[MAT_INDEX_SPECULAR];
}
- *Rindex = (GLuint) (GLint) ind;
+ *Rindex = i;
}
}
/**
+ * 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)
ctx->Current.RasterColor,
ctx->Current.RasterSecondaryColor,
&ctx->Current.RasterIndex );
-
}
else {
/* use current color or index */
}
/* ndc = clip / W */
- ASSERT( clip[3]!=0.0 );
- d = 1.0F / clip[3];
+ 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;
}
-void
+/** Calls _mesa_RasterPos4f() */
+void GLAPIENTRY
_mesa_RasterPos2d(GLdouble x, GLdouble y)
{
_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((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((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((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((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((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((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((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((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((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((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((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.
}
-void
+void GLAPIENTRY
_mesa_WindowPos2dMESA(GLdouble x, GLdouble y)
{
window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2fMESA(GLfloat x, GLfloat y)
{
window_pos4f(x, y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2iMESA(GLint x, GLint y)
{
window_pos4f((GLfloat) x, (GLfloat) y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2sMESA(GLshort x, GLshort y)
{
window_pos4f(x, y, 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3dMESA(GLdouble x, GLdouble y, GLdouble z)
{
window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3fMESA(GLfloat x, GLfloat y, GLfloat z)
{
window_pos4f(x, y, z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3iMESA(GLint x, GLint y, GLint z)
{
window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3sMESA(GLshort x, GLshort y, GLshort z)
{
window_pos4f(x, y, z, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4dMESA(GLdouble x, GLdouble y, GLdouble z, GLdouble w)
{
window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4fMESA(GLfloat x, GLfloat y, GLfloat z, GLfloat w)
{
window_pos4f(x, y, z, w);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4iMESA(GLint x, GLint y, GLint z, GLint w)
{
window_pos4f((GLfloat) x, (GLfloat) y, (GLfloat) z, (GLfloat) w);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4sMESA(GLshort x, GLshort y, GLshort z, GLshort w)
{
window_pos4f(x, y, z, w);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2dvMESA(const GLdouble *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2fvMESA(const GLfloat *v)
{
window_pos4f(v[0], v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2ivMESA(const GLint *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos2svMESA(const GLshort *v)
{
window_pos4f(v[0], v[1], 0.0F, 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3dvMESA(const GLdouble *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3fvMESA(const GLfloat *v)
{
window_pos4f(v[0], v[1], v[2], 1.0);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3ivMESA(const GLint *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1], (GLfloat) v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos3svMESA(const GLshort *v)
{
window_pos4f(v[0], v[1], v[2], 1.0F);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4dvMESA(const GLdouble *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1],
(GLfloat) v[2], (GLfloat) v[3]);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4fvMESA(const GLfloat *v)
{
window_pos4f(v[0], v[1], v[2], v[3]);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4ivMESA(const GLint *v)
{
window_pos4f((GLfloat) v[0], (GLfloat) v[1],
(GLfloat) v[2], (GLfloat) v[3]);
}
-void
+void GLAPIENTRY
_mesa_WindowPos4svMESA(const GLshort *v)
{
window_pos4f(v[0], v[1], v[2], v[3]);
}
-
+#endif
#if 0
}
#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 = 1.0;
+ 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;
+
+ /*
+ * 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);
+}
+
+/*@}*/
projects / mesa.git / blobdiff