/**************************************************************************
*
* Copyright © 2010 Jakob Bornecrantz
*
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
**************************************************************************/
#include "i915_reg.h"
#include "i915_context.h"
#include "i915_state.h"
#include "i915_resource.h"
#include "i915_screen.h"
/***********************************************************************
* Update framebuffer state
*/
static unsigned translate_format(enum pipe_format format)
{
switch (format) {
case PIPE_FORMAT_B8G8R8A8_UNORM:
case PIPE_FORMAT_B8G8R8A8_SRGB:
case PIPE_FORMAT_B8G8R8X8_UNORM:
case PIPE_FORMAT_R8G8B8A8_UNORM:
case PIPE_FORMAT_R8G8B8X8_UNORM:
return COLOR_BUF_ARGB8888;
case PIPE_FORMAT_B5G6R5_UNORM:
return COLOR_BUF_RGB565;
case PIPE_FORMAT_B5G5R5A1_UNORM:
return COLOR_BUF_ARGB1555;
case PIPE_FORMAT_B4G4R4A4_UNORM:
return COLOR_BUF_ARGB4444;
case PIPE_FORMAT_B10G10R10A2_UNORM:
return COLOR_BUF_ARGB2101010;
case PIPE_FORMAT_L8_UNORM:
case PIPE_FORMAT_A8_UNORM:
case PIPE_FORMAT_I8_UNORM:
return COLOR_BUF_8BIT;
default:
assert(0);
return 0;
}
}
static unsigned translate_depth_format(enum pipe_format zformat)
{
switch (zformat) {
case PIPE_FORMAT_Z24X8_UNORM:
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
return DEPTH_FRMT_24_FIXED_8_OTHER;
case PIPE_FORMAT_Z16_UNORM:
return DEPTH_FRMT_16_FIXED;
default:
assert(0);
return 0;
}
}
static inline uint32_t
buf_3d_tiling_bits(enum i915_winsys_buffer_tile tiling)
{
uint32_t tiling_bits = 0;
switch (tiling) {
case I915_TILE_Y:
tiling_bits |= BUF_3D_TILE_WALK_Y;
case I915_TILE_X:
tiling_bits |= BUF_3D_TILED_SURFACE;
case I915_TILE_NONE:
break;
}
return tiling_bits;
}
static void update_framebuffer(struct i915_context *i915)
{
struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
struct pipe_surface *depth_surface = i915->framebuffer.zsbuf;
unsigned x, y;
int layer;
uint32_t draw_offset, draw_size;
if (cbuf_surface) {
struct i915_texture *tex = i915_texture(cbuf_surface->texture);
assert(tex);
i915->current.cbuf_bo = tex->buffer;
i915->current.cbuf_flags = BUF_3D_ID_COLOR_BACK |
BUF_3D_PITCH(tex->stride) | /* pitch in bytes */
buf_3d_tiling_bits(tex->tiling);
layer = cbuf_surface->u.tex.first_layer;
x = tex->image_offset[cbuf_surface->u.tex.level][layer].nblocksx;
y = tex->image_offset[cbuf_surface->u.tex.level][layer].nblocksy;
} else {
i915->current.cbuf_bo = NULL;
x = y = 0;
}
i915->static_dirty |= I915_DST_BUF_COLOR;
/* What happens if no zbuf??
*/
if (depth_surface) {
struct i915_texture *tex = i915_texture(depth_surface->texture);
unsigned offset = i915_texture_offset(tex, depth_surface->u.tex.level,
depth_surface->u.tex.first_layer);
assert(tex);
if (offset != 0)
debug_printf("Depth offset is %d\n",offset);
i915->current.depth_bo = tex->buffer;
i915->current.depth_flags = BUF_3D_ID_DEPTH |
BUF_3D_PITCH(tex->stride) | /* pitch in bytes */
buf_3d_tiling_bits(tex->tiling);
} else
i915->current.depth_bo = NULL;
i915->static_dirty |= I915_DST_BUF_DEPTH;
/* drawing rect calculations */
draw_offset = x | (y << 16);
draw_size = (i915->framebuffer.width - 1 + x) |
((i915->framebuffer.height - 1 + y) << 16);
if (i915->current.draw_offset != draw_offset) {
i915->current.draw_offset = draw_offset;
i915_set_flush_dirty(i915, I915_PIPELINE_FLUSH);
i915->static_dirty |= I915_DST_RECT;
}
if (i915->current.draw_size != draw_size) {
i915->current.draw_size = draw_size;
i915->static_dirty |= I915_DST_RECT;
}
/* we also send a new program to make sure the fixup for RGBA surfaces happens */
i915->hardware_dirty |= I915_HW_STATIC | I915_HW_PROGRAM;
/* flush the cache in case we sample from the old renderbuffers */
i915_set_flush_dirty(i915, I915_FLUSH_CACHE);
}
struct i915_tracked_state i915_hw_framebuffer = {
"framebuffer",
update_framebuffer,
I915_NEW_FRAMEBUFFER
};
static const struct
{
enum pipe_format format;
uint hw_swizzle;
} fixup_formats[] = {
{ PIPE_FORMAT_R8G8B8A8_UNORM, 0x21030000 /* BGRA */},
{ PIPE_FORMAT_R8G8B8X8_UNORM, 0x21030000 /* BGRX */},
{ PIPE_FORMAT_L8_UNORM, 0x00030000 /* RRRA */},
{ PIPE_FORMAT_I8_UNORM, 0x00030000 /* RRRA */},
{ PIPE_FORMAT_A8_UNORM, 0x33330000 /* AAAA */},
{ PIPE_FORMAT_NONE, 0x00000000},
};
static uint32_t need_target_fixup(struct pipe_surface* p, uint32_t *fixup)
{
enum pipe_format f;
/* if we don't have a surface bound yet, we don't need to fixup the shader */
if (!p)
return 0;
f = p->format;
for(int i=0; fixup_formats[i].format != PIPE_FORMAT_NONE; i++)
if (fixup_formats[i].format == f) {
*fixup = fixup_formats[i].hw_swizzle;
return f;
}
*fixup = 0;
return 0;
}
static void update_dst_buf_vars(struct i915_context *i915)
{
struct pipe_surface *cbuf_surface = i915->framebuffer.cbufs[0];
struct pipe_surface *depth_surface = i915->framebuffer.zsbuf;
uint32_t dst_buf_vars, cformat, zformat;
uint32_t early_z = 0;
uint32_t fixup = 0;
int need_fixup;
if (cbuf_surface)
cformat = cbuf_surface->format;
else
cformat = PIPE_FORMAT_B8G8R8A8_UNORM; /* arbitrary */
cformat = translate_format(cformat);
if (depth_surface) {
struct i915_texture *tex = i915_texture(depth_surface->texture);
struct i915_screen *is = i915_screen(i915->base.screen);
zformat = translate_depth_format(depth_surface->format);
if (is->is_i945 && tex->tiling != I915_TILE_NONE
&& !i915->fs->info.writes_z)
early_z = CLASSIC_EARLY_DEPTH;
} else
zformat = 0;
dst_buf_vars = DSTORG_HORT_BIAS(0x8) | /* .5 */
DSTORG_VERT_BIAS(0x8) | /* .5 */
LOD_PRECLAMP_OGL |
TEX_DEFAULT_COLOR_OGL |
cformat |
zformat |
early_z;
if (i915->current.dst_buf_vars != dst_buf_vars) {
if (early_z != (i915->current.dst_buf_vars & CLASSIC_EARLY_DEPTH))
i915_set_flush_dirty(i915, I915_PIPELINE_FLUSH);
i915->current.dst_buf_vars = dst_buf_vars;
i915->static_dirty |= I915_DST_VARS;
i915->hardware_dirty |= I915_HW_STATIC;
}
need_fixup = need_target_fixup(cbuf_surface, &fixup);
if (i915->current.target_fixup_format != need_fixup ||
i915->current.fixup_swizzle != fixup) {
i915->current.target_fixup_format = need_fixup;
i915->current.fixup_swizzle = fixup;
i915->hardware_dirty |= I915_HW_PROGRAM;
}
}
struct i915_tracked_state i915_hw_dst_buf_vars = {
"dst buf vars",
update_dst_buf_vars,
I915_NEW_FRAMEBUFFER | I915_NEW_FS
};