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-rw-r--r--src/mesa/vbo/vbo_context.c246
1 files changed, 246 insertions, 0 deletions
diff --git a/src/mesa/vbo/vbo_context.c b/src/mesa/vbo/vbo_context.c
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index 00000000000..65998e7ff75
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+++ b/src/mesa/vbo/vbo_context.c
@@ -0,0 +1,246 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.3
+ *
+ * Copyright (C) 1999-2005 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:
+ * Keith Whitwell <[email protected]>
+ */
+
+#include "mtypes.h"
+#include "vbo.h"
+#include "vbo_context.h"
+#include "imports.h"
+#include "api_arrayelt.h"
+
+/* Reach out and grab this to use as the default:
+ */
+extern void _tnl_draw_prims( GLcontext *ctx,
+ const struct gl_client_array *arrays[],
+ const struct _mesa_prim *prims,
+ GLuint nr_prims,
+ const struct _mesa_index_buffer *ib,
+ GLuint min_index,
+ GLuint max_index );
+
+
+
+#define NR_LEGACY_ATTRIBS 16
+#define NR_GENERIC_ATTRIBS 16
+#define NR_MAT_ATTRIBS 12
+
+static GLuint check_size( const GLfloat *attr )
+{
+ if (attr[3] != 1.0) return 4;
+ if (attr[2] != 0.0) return 3;
+ if (attr[1] != 0.0) return 2;
+ return 1;
+}
+
+static void init_legacy_currval(GLcontext *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct gl_client_array *arrays = vbo->legacy_currval;
+ GLuint i;
+
+ memset(arrays, 0, sizeof(*arrays) * NR_LEGACY_ATTRIBS);
+
+ /* Set up a constant (StrideB == 0) array for each current
+ * attribute:
+ */
+ for (i = 0; i < NR_LEGACY_ATTRIBS; i++) {
+ struct gl_client_array *cl = &arrays[i];
+
+ /* Size will have to be determined at runtime:
+ */
+ cl->Size = check_size(ctx->Current.Attrib[i]);
+ cl->Stride = 0;
+ cl->StrideB = 0;
+ cl->Enabled = 1;
+ cl->Type = GL_FLOAT;
+ cl->Ptr = (const void *)ctx->Current.Attrib[i];
+ cl->BufferObj = ctx->Array.NullBufferObj;
+ }
+}
+
+
+static void init_generic_currval(GLcontext *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct gl_client_array *arrays = vbo->generic_currval;
+ GLuint i;
+
+ memset(arrays, 0, sizeof(*arrays) * NR_GENERIC_ATTRIBS);
+
+ for (i = 0; i < NR_GENERIC_ATTRIBS; i++) {
+ struct gl_client_array *cl = &arrays[i];
+
+ /* This will have to be determined at runtime:
+ */
+ cl->Size = 1;
+ cl->Type = GL_FLOAT;
+ cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
+ cl->Stride = 0;
+ cl->StrideB = 0;
+ cl->Enabled = 1;
+ cl->BufferObj = ctx->Array.NullBufferObj;
+ }
+}
+
+
+static void init_mat_currval(GLcontext *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct gl_client_array *arrays = vbo->mat_currval;
+ GLuint i;
+
+ memset(arrays, 0, sizeof(*arrays) * NR_MAT_ATTRIBS);
+
+ /* Set up a constant (StrideB == 0) array for each current
+ * attribute:
+ */
+ for (i = 0; i < NR_MAT_ATTRIBS; i++) {
+ struct gl_client_array *cl = &arrays[i];
+
+ /* Size is fixed for the material attributes, for others will
+ * be determined at runtime:
+ */
+ switch (i - VERT_ATTRIB_GENERIC0) {
+ case MAT_ATTRIB_FRONT_SHININESS:
+ case MAT_ATTRIB_BACK_SHININESS:
+ cl->Size = 1;
+ break;
+ case MAT_ATTRIB_FRONT_INDEXES:
+ case MAT_ATTRIB_BACK_INDEXES:
+ cl->Size = 3;
+ break;
+ default:
+ cl->Size = 4;
+ break;
+ }
+
+ if (i < MAT_ATTRIB_MAX)
+ cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
+ else
+ cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
+
+ cl->Type = GL_FLOAT;
+ cl->Stride = 0;
+ cl->StrideB = 0;
+ cl->Enabled = 1;
+ cl->BufferObj = ctx->Array.NullBufferObj;
+ }
+}
+
+#if 0
+
+static void vbo_exec_current_init( struct vbo_exec_context *exec )
+{
+ GLcontext *ctx = exec->ctx;
+ GLint i;
+
+ /* setup the pointers for the typical 16 vertex attributes */
+ for (i = 0; i < VBO_ATTRIB_FIRST_MATERIAL; i++)
+ exec->vtx.current[i] = ctx->Current.Attrib[i];
+
+ /* setup pointers for the 12 material attributes */
+ for (i = 0; i < MAT_ATTRIB_MAX; i++)
+ exec->vtx.current[VBO_ATTRIB_FIRST_MATERIAL + i] =
+ ctx->Light.Material.Attrib[i];
+}
+#endif
+
+GLboolean _vbo_CreateContext( GLcontext *ctx )
+{
+ struct vbo_context *vbo = CALLOC_STRUCT(vbo_context);
+
+ ctx->swtnl_im = (void *)vbo;
+
+ /* Initialize the arrayelt helper
+ */
+ if (!ctx->aelt_context &&
+ !_ae_create_context( ctx )) {
+ return GL_FALSE;
+ }
+
+ /* TODO: remove these pointers.
+ */
+ vbo->legacy_currval = &vbo->currval[VBO_ATTRIB_POS];
+ vbo->generic_currval = &vbo->currval[VBO_ATTRIB_GENERIC0];
+ vbo->mat_currval = &vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT];
+
+ init_legacy_currval( ctx );
+ init_generic_currval( ctx );
+ init_mat_currval( ctx );
+
+ /* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
+ * of vertex program active.
+ */
+ {
+ GLuint i;
+
+ /* When no vertex program, pull in the material attributes in
+ * the 16..32 generic range.
+ */
+ for (i = 0; i < 16; i++)
+ vbo->map_vp_none[i] = i;
+ for (i = 0; i < 12; i++)
+ vbo->map_vp_none[16+i] = VBO_ATTRIB_MAT_FRONT_AMBIENT + i;
+ for (i = 0; i < 4; i++)
+ vbo->map_vp_none[28+i] = i;
+
+ for (i = 0; i < VERT_ATTRIB_MAX; i++)
+ vbo->map_vp_arb[i] = i;
+ }
+
+
+ /* By default:
+ */
+ vbo->draw_prims = _tnl_draw_prims;
+
+ /* Hook our functions into exec and compile dispatch tables. These
+ * will pretty much be permanently installed, which means that the
+ * vtxfmt mechanism can be removed now.
+ */
+ vbo_exec_init( ctx );
+ vbo_save_init( ctx );
+
+
+ return GL_TRUE;
+}
+
+void _vbo_InvalidateState( GLcontext *ctx, GLuint new_state )
+{
+ _ae_invalidate_state(ctx, new_state);
+ vbo_exec_invalidate_state(ctx, new_state);
+}
+
+
+void _vbo_DestroyContext( GLcontext *ctx )
+{
+ if (ctx->aelt_context) {
+ _ae_destroy_context( ctx );
+ ctx->aelt_context = NULL;
+ }
+
+ FREE(vbo_context(ctx));
+ ctx->swtnl_im = NULL;
+}
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