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/*
* Direct Rendering Support for SMedia Glamo 336x/337x
*
* (c) 2009 Thomas White <taw@bitwiz.org.uk>
*
* 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
* THE AUTHORS 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.
*
*
* Based on intel_render.c, to which the following notice applies:
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
*/
/*
* Render unclipped vertex buffers by emitting vertices directly to
* dma buffers. Use strip/fan hardware acceleration where possible.
*
*/
#include "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/imports.h"
#include "main/mtypes.h"
#include "main/enums.h"
#include "tnl/t_context.h"
#include "tnl/t_vertex.h"
#include "tnl/t_pipeline.h"
#include "glamo_context.h"
#include "glamo_tris.h"
#include "glamo_regs.h"
/*
* Render unclipped vertex buffers by emitting vertices directly to
* VRAM buffers. Use strip/fan hardware primitives where possible.
* Try to simulate missing primitives with indexed vertices.
*/
#define HAVE_POINTS 1
#define HAVE_LINES 1
#define HAVE_LINE_STRIPS 0
#define HAVE_TRIANGLES 1
#define HAVE_TRI_STRIPS 0
#define HAVE_TRI_STRIP_1 0
#define HAVE_TRI_FANS 0
#define HAVE_POLYGONS 0
#define HAVE_QUADS 0
#define HAVE_QUAD_STRIPS 0
#define HAVE_ELTS 0
static void glamoFlushPrim(struct glamo_context *gCtx)
{
printf("glamoFlushPrim: %i vertices, %i %i\n", gCtx->prim.count,
gCtx->prim.start_offset, gCtx->prim.current_offset);
if ( gCtx->prim.vb_bo == NULL ) return;
/* Upload to hardware */
glamo_bo_subdata(gCtx->prim.vb_bo, 0, gCtx->prim.current_offset,
gCtx->prim.vb);
/* Dispatch to the hardware */
glamoDRMStartBurst(gCtx, G3D_STREAM_MODE_0);
glamoDRMAddData(gCtx, 0x000f0300, 4);
glamoDRMAddBO(gCtx, gCtx->prim.vb_bo);
glamoDRMDispatch(gCtx);
/* Please use a new BO for the next buffer */
gCtx->prim.vb_bo = NULL;
/* Continue from new start */
gCtx->prim.start_offset = gCtx->prim.current_offset;
}
static inline GLuint glamoGetVBMax(struct glamo_context *gCtx)
{
return GLAMO_VB_SIZE / gCtx->vertex_size;
}
static inline GLuint glamoGetCurrentMax(struct glamo_context *gCtx)
{
/* How many more vertices can be accommodated?
* Each vertex takes up 4x 32-bit fixed point values */
return (GLAMO_VB_SIZE - gCtx->prim.current_offset) / gCtx->vertex_size;
}
#define LOCAL_VARS \
struct glamo_context *gCtx = GLAMO_CONTEXT(ctx);
#define INIT(prim)
#define FLUSH() glamoFlushPrim(gCtx)
#define GET_SUBSEQUENT_VB_MAX_VERTS() glamoGetVBMax(gCtx)
#define GET_CURRENT_VB_MAX_VERTS() glamoGetCurrentMax(gCtx)
#define ALLOC_VERTS(nr) glamoGetPrimSpace(gCtx, nr)
#define EMIT_VERTS(ctx, j, nr, buf) \
_tnl_emit_vertices_to_buffer(ctx, j, (j)+(nr), buf)
#define TAG(x) glamo_##x
#include "tnl_dd/t_dd_dmatmp.h"
/**********************************************************************/
/* Render pipeline stage */
/**********************************************************************/
static void glamoFireEngine(struct glamo_context *gCtx)
{
glamoDRMStartBurst(gCtx, G3D_FIRE);
glamoDRMAddData(gCtx, 0, 2); /* Fire! */
glamoDRMDispatch(gCtx);
}
static GLboolean glamoRunRender(GLcontext *ctx,
struct tnl_pipeline_stage *stage)
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct glamo_context *gCtx = GLAMO_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
GLuint i;
printf("glamoRunRender\n");
/* Don't handle clipping */
if ( !glamo_validate_render(ctx, VB) ) {
return GL_TRUE; /* Failed */
}
/* Validate GPU state */
if ( gCtx->new_state ) {
if ( !glamoValidateState(ctx, gCtx->new_state) ) {
printf("Couldn't validate state...\n");
}
} /* else nothing to update */
tnl->clipspace.new_inputs |= VERT_BIT_POS;
tnl->Driver.Render.Start(ctx);
for ( i=0; i<VB->PrimitiveCount; i++ ) {
GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
GLuint start = VB->Primitive[i].start;
GLuint length = VB->Primitive[i].count;
if (!length) continue;
glamo_render_tab_verts[prim & PRIM_MODE_MASK](ctx, start,
start + length, prim);
}
tnl->Driver.Render.Finish(ctx);
glamoFireEngine(gCtx);
return GL_FALSE; /* Ok */
}
static const struct tnl_pipeline_stage _glamo_render_stage = {
"glamo render",
NULL,
NULL,
NULL,
NULL,
glamoRunRender
};
const struct tnl_pipeline_stage *glamo_pipeline[] = {
&_tnl_vertex_transform_stage,
&_tnl_vertex_cull_stage,
&_tnl_normal_transform_stage,
&_tnl_lighting_stage,
&_tnl_fog_coordinate_stage,
&_tnl_texgen_stage,
&_tnl_texture_transform_stage,
&_tnl_point_attenuation_stage,
&_tnl_vertex_program_stage,
&_glamo_render_stage, /* ADD: unclipped rastersetup-to-dma */
&_tnl_render_stage,
0,
};
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