/**
* Called via glEnd.
*/
static void GLAPIENTRY vbo_exec_End( void )
{
GET_CURRENT_CONTEXT( ctx );
if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
if (exec->vtx.prim_count > 0) {
/* close off current primitive */
int idx = exec->vtx.vert_count;
int i = exec->vtx.prim_count - 1;
exec->vtx.prim[i].end = 1;
exec->vtx.prim[i].count = idx - exec->vtx.prim[i].start;
}
ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
if (exec->vtx.prim_count == VBO_MAX_PRIM)
vbo_exec_vtx_flush( exec, GL_FALSE );
}
else
_mesa_error( ctx, GL_INVALID_OPERATION, "glEnd" );
if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
_mesa_flush(ctx);
}
}
/**
* Close off the last primitive, execute the buffer, restart the
* primitive. This is called when we fill a vertex buffer before
* hitting glEnd.
*/
static void vbo_exec_wrap_buffers( struct vbo_exec_context *exec )
{
if (exec->vtx.prim_count == 0) {
exec->vtx.copied.nr = 0;
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
else {
struct _mesa_prim *last_prim = &exec->vtx.prim[exec->vtx.prim_count - 1];
const GLuint last_begin = last_prim->begin;
GLuint last_count;
if (_mesa_inside_begin_end(exec->ctx)) {
last_prim->count = exec->vtx.vert_count - last_prim->start;
}
last_count = last_prim->count;
/* Special handling for wrapping GL_LINE_LOOP */
if (last_prim->mode == GL_LINE_LOOP &&
last_count > 0 &&
!last_prim->end) {
/* draw this section of the incomplete line loop as a line strip */
last_prim->mode = GL_LINE_STRIP;
if (!last_prim->begin) {
/* This is not the first section of the line loop, so don't
* draw the 0th vertex. We're saving it until we draw the
* very last section of the loop.
*/
last_prim->start++;
last_prim->count--;
}
}
/* Execute the buffer and save copied vertices.
*/
if (exec->vtx.vert_count)
vbo_exec_vtx_flush( exec, GL_FALSE );
else {
exec->vtx.prim_count = 0;
exec->vtx.copied.nr = 0;
}
/* Emit a glBegin to start the new list.
*/
assert(exec->vtx.prim_count == 0);
if (_mesa_inside_begin_end(exec->ctx)) {
exec->vtx.prim[0].mode = exec->ctx->Driver.CurrentExecPrimitive;
exec->vtx.prim[0].begin = 0;
exec->vtx.prim[0].end = 0;
exec->vtx.prim[0].start = 0;
exec->vtx.prim[0].count = 0;
exec->vtx.prim_count++;
if (exec->vtx.copied.nr == last_count)
exec->vtx.prim[0].begin = last_begin;
}
}
}
/**
* Called via glEnd.
*/
static void GLAPIENTRY
vbo_exec_End(void)
{
GET_CURRENT_CONTEXT(ctx);
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
if (!_mesa_inside_begin_end(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glEnd");
return;
}
ctx->Exec = ctx->OutsideBeginEnd;
if (ctx->CurrentClientDispatch == ctx->BeginEnd) {
ctx->CurrentClientDispatch = ctx->OutsideBeginEnd;
_glapi_set_dispatch(ctx->CurrentClientDispatch);
}
if (exec->vtx.prim_count > 0) {
/* close off current primitive */
struct _mesa_prim *last_prim = &exec->vtx.prim[exec->vtx.prim_count - 1];
last_prim->end = 1;
last_prim->count = exec->vtx.vert_count - last_prim->start;
/* Special handling for GL_LINE_LOOP */
if (last_prim->mode == GL_LINE_LOOP && last_prim->begin == 0) {
/* We're finishing drawing a line loop. Append 0th vertex onto
* end of vertex buffer so we can draw it as a line strip.
*/
const fi_type *src = exec->vtx.buffer_map +
last_prim->start * exec->vtx.vertex_size;
fi_type *dst = exec->vtx.buffer_map +
exec->vtx.vert_count * exec->vtx.vertex_size;
/* copy 0th vertex to end of buffer */
memcpy(dst, src, exec->vtx.vertex_size * sizeof(fi_type));
last_prim->start++; /* skip vertex0 */
/* note that last_prim->count stays unchanged */
last_prim->mode = GL_LINE_STRIP;
/* Increment the vertex count so the next primitive doesn't
* overwrite the last vertex which we just added.
*/
exec->vtx.vert_count++;
exec->vtx.buffer_ptr += exec->vtx.vertex_size;
}
try_vbo_merge(exec);
}
ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
if (exec->vtx.prim_count == VBO_MAX_PRIM)
vbo_exec_vtx_flush(exec, GL_FALSE);
if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
_mesa_flush(ctx);
}
}
/**
* Flush (draw) vertices.
* \param unmap - leave VBO unmapped after flushing?
*/
static void
vbo_exec_FlushVertices_internal(struct vbo_exec_context *exec, GLboolean unmap)
{
if (exec->vtx.vert_count || unmap) {
vbo_exec_vtx_flush( exec, unmap );
}
if (exec->vtx.vertex_size) {
vbo_exec_copy_to_current( exec );
reset_attrfv( exec );
}
}
void vbo_exec_FlushVertices_internal( GLcontext *ctx, GLboolean unmap )
{
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
if (exec->vtx.vert_count || unmap) {
vbo_exec_vtx_flush( exec, unmap );
}
if (exec->vtx.vertex_size) {
vbo_exec_copy_to_current( exec );
reset_attrfv( exec );
}
}
/**
* Close off the last primitive, execute the buffer, restart the
* primitive.
*/
static void vbo_exec_wrap_buffers( struct vbo_exec_context *exec )
{
if (exec->vtx.prim_count == 0) {
exec->vtx.copied.nr = 0;
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
else {
GLuint last_begin = exec->vtx.prim[exec->vtx.prim_count-1].begin;
GLuint last_count;
if (exec->ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {
GLint i = exec->vtx.prim_count - 1;
assert(i >= 0);
exec->vtx.prim[i].count = (exec->vtx.vert_count -
exec->vtx.prim[i].start);
}
last_count = exec->vtx.prim[exec->vtx.prim_count-1].count;
/* Execute the buffer and save copied vertices.
*/
if (exec->vtx.vert_count)
vbo_exec_vtx_flush( exec, GL_FALSE );
else {
exec->vtx.prim_count = 0;
exec->vtx.copied.nr = 0;
}
/* Emit a glBegin to start the new list.
*/
assert(exec->vtx.prim_count == 0);
if (exec->ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {
exec->vtx.prim[0].mode = exec->ctx->Driver.CurrentExecPrimitive;
exec->vtx.prim[0].start = 0;
exec->vtx.prim[0].count = 0;
exec->vtx.prim_count++;
if (exec->vtx.copied.nr == last_count)
exec->vtx.prim[0].begin = last_begin;
}
}
}
/**
* Called via glEnd.
*/
static void GLAPIENTRY vbo_exec_End( void )
{
GET_CURRENT_CONTEXT( ctx );
struct vbo_exec_context *exec = &vbo_context(ctx)->exec;
if (!_mesa_inside_begin_end(ctx)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glEnd");
return;
}
ctx->Exec = ctx->OutsideBeginEnd;
if (ctx->CurrentDispatch == ctx->BeginEnd) {
ctx->CurrentDispatch = ctx->OutsideBeginEnd;
_glapi_set_dispatch(ctx->CurrentDispatch);
}
if (exec->vtx.prim_count > 0) {
/* close off current primitive */
int idx = exec->vtx.vert_count;
int i = exec->vtx.prim_count - 1;
exec->vtx.prim[i].end = 1;
exec->vtx.prim[i].count = idx - exec->vtx.prim[i].start;
try_vbo_merge(exec);
}
ctx->Driver.CurrentExecPrimitive = PRIM_OUTSIDE_BEGIN_END;
if (exec->vtx.prim_count == VBO_MAX_PRIM)
vbo_exec_vtx_flush( exec, GL_FALSE );
if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) {
_mesa_flush(ctx);
}
}
