--- /dev/null
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 3.5
+ *
+ * Copyright (C) 1999-2001 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.
+ *
+ * Authors:
+ * Gareth Hughes <gareth@valinux.com>
+ * Keith Whitwell <keithw@valinux.com>
+ */
+
+/* Template for immediate mode vertex functions.
+ */
+
+#define DBG 0
+
+#define VERTEX( ox, oy, oz, ow )
+do {
+ GET_CURRENT_VERTEX;
+ GLfloat w;
+ GLuint mask;
+ const GLfloat * const m = ctx->_ModelProjectMatrix.m;
+
+ if (DO_FULL_MATRIX) {
+ VERTEX_CLIP(0) = m[0] * ox + m[4] * oy + m[8] * oz + m[12] * ow;
+ VERTEX_CLIP(1) = m[1] * ox + m[5] * oy + m[9] * oz + m[13] * ow;
+ VERTEX_CLIP(2) = m[2] * ox + m[6] * oy + m[10] * oz + m[14] * ow;
+ VERTEX_CLIP(3) = m[3] * ox + m[7] * oy + m[11] * oz + m[15] * ow;
+ w = VERTEX_CLIP(3);
+ }
+ else if (DO_NOROT_MATRIX) {
+ VERTEX_CLIP(0) = m[0] * ox + m[12] * ow;
+ VERTEX_CLIP(1) = m[5] * oy + m[13] * ow;
+ VERTEX_CLIP(2) = m[10] * oz + m[14] * ow;
+ VERTEX_CLIP(3) = ow;
+ w = ow;
+ }
+ else {
+ ASSERT (DO_IDENTITY_MATRIX);
+ VERTEX_CLIP(0) = ox;
+ VERTEX_CLIP(1) = oy;
+ VERTEX_CLIP(2) = oz;
+ VERTEX_CLIP(3) = ow;
+ w = ow;
+ }
+
+ mask = 0;
+ if (DO_CLIP_TEST) {
+ if ( VERTEX_CLIP(0) > w ) mask |= CLIP_RIGHT_BIT;
+ if ( VERTEX_CLIP(0) < -w ) mask |= CLIP_LEFT_BIT;
+ if ( VERTEX_CLIP(1) > w ) mask |= CLIP_TOP_BIT;
+ if ( VERTEX_CLIP(1) < -w ) mask |= CLIP_BOTTOM_BIT;
+ if ( VERTEX_CLIP(2) > w ) mask |= CLIP_FAR_BIT;
+ if ( VERTEX_CLIP(2) < -w ) mask |= CLIP_NEAR_BIT;
+ VERTEX_MASK(v) = mask;
+ }
+
+ if (!mask) {
+ if (HAVE_VERTEX_WIN) {
+ if (!HAVE_HW_VIEWPORT) {
+ const GLfloat *s = GET_VIEWPORT_MATRIX();
+ if (HAVE_W && HAVE_HW_DIVIDE) {
+ VERTEX_WIN( 0 ) = s[0] * VERTEX_CLIP( 0 ) + s[12];
+ VERTEX_WIN( 1 ) = s[5] * VERTEX_CLIP( 1 ) + s[13];
+ VERTEX_WIN( 2 ) = s[10] * VERTEX_CLIP( 2 ) + s[14];
+ VERTEX_WIN( 3 ) = w;
+ }
+ else {
+ const GLfloat oow = 1.0/w; /* possibly opt away */
+ VERTEX_WIN( 0 ) = s[0] * VERTEX_CLIP( 0 ) * oow + s[12];
+ VERTEX_WIN( 1 ) = s[5] * VERTEX_CLIP( 1 ) * oow + s[13];
+ VERTEX_WIN( 2 ) = s[10] * VERTEX_CLIP( 2 ) * oow + s[14];
+ if (HAVE_W)
+ VERTEX_WIN( 3 ) = oow;
+ }
+ }
+ else if (HAVE_W && HAVE_HW_DIVIDE) {
+ if (!VERTEX_WIN_IS_VERTEX_CLIP) {
+ VERTEX_WIN( 0 ) = VERTEX_CLIP( 0 );
+ VERTEX_WIN( 1 ) = VERTEX_CLIP( 1 );
+ VERTEX_WIN( 2 ) = VERTEX_CLIP( 2 );
+ VERTEX_WIN( 3 ) = w;
+ }
+ }
+ else {
+ const GLfloat oow = 1.0/w; /* possibly opt away */
+ VERTEX_WIN( 0 ) = VERTEX_CLIP( 0 ) * oow;
+ VERTEX_WIN( 1 ) = VERTEX_CLIP( 1 ) * oow;
+ VERTEX_WIN( 2 ) = VERTEX_CLIP( 2 ) * oow;
+ if (HAVE_W)
+ VERTEX_WIN( 3 ) = oow;
+ }
+ }
+ } else if (!FALLBACK_OR_CLIPPING) {
+ SET_CLIPPING(); /* transition to clipping */
+ }
+
+ COPY_VERTEX_FROM_CURRENT;
+ BUILD_PRIM_FROM_VERTEX;
+}
+
+/* Let the compiler optimize away the constant operations:
+ */
+static void VTAG(Vertex2f)( GLfloat ox, GLfloat oy )
+{
+ /* Cliptest on clip[2] could also be eliminated...
+ */
+ VERTEX( ox, oy, 0, 1 );
+}
+
+static void VTAG(Vertex2fv)( const GLfloat *obj )
+{
+ /* Cliptest on clip[2] could also be eliminated...
+ */
+ VERTEX( obj[0], obj[1], 0, 1 );
+}
+
+static void VTAG(Vertex3f)( GLfloat ox, GLfloat oy, GLfloat oz )
+{
+ VERTEX( ox, oy, oz, 1 );
+}
+
+static void VTAG(Vertex3fv)( const GLfloat *obj )
+{
+ VERTEX( obj[0], obj[1], obj[2], 1 );
+}
+
+static void VTAG(Vertex4f)( GLfloat ox, GLfloat oy, GLfloat oz, GLfloat ow )
+{
+ VERTEX( ox, oy, oz, ow );
+}
+
+static void VTAG(Vertex4fv)( const GLfloat *obj )
+{
+ VERTEX( obj[0], obj[1], obj[2], obj[3] );
+}
+
+
+#undef DO_FULL_MATRIX
+#undef VTAG
+#undef VERTEX
projects / mesa.git / blobdiff