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xf86-video-intel/src/i915_render.c

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/*
* Copyright © 2006 Intel Corporation
*
* 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.
*
* Authors:
* Wang Zhenyu <zhenyu.z.wang@intel.com>
* Eric Anholt <eric@anholt.net>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "i830.h"
#include "i915_reg.h"
#include "i915_3d.h"
struct formatinfo {
int fmt;
uint32_t card_fmt;
};
struct blendinfo {
Bool dst_alpha;
Bool src_alpha;
uint32_t src_blend;
uint32_t dst_blend;
};
static struct blendinfo i915_blend_op[] = {
/* Clear */
{0, 0, BLENDFACT_ZERO, BLENDFACT_ZERO},
/* Src */
{0, 0, BLENDFACT_ONE, BLENDFACT_ZERO},
/* Dst */
{0, 0, BLENDFACT_ZERO, BLENDFACT_ONE},
/* Over */
{0, 1, BLENDFACT_ONE, BLENDFACT_INV_SRC_ALPHA},
/* OverReverse */
{1, 0, BLENDFACT_INV_DST_ALPHA, BLENDFACT_ONE},
/* In */
{1, 0, BLENDFACT_DST_ALPHA, BLENDFACT_ZERO},
/* InReverse */
{0, 1, BLENDFACT_ZERO, BLENDFACT_SRC_ALPHA},
/* Out */
{1, 0, BLENDFACT_INV_DST_ALPHA, BLENDFACT_ZERO},
/* OutReverse */
{0, 1, BLENDFACT_ZERO, BLENDFACT_INV_SRC_ALPHA},
/* Atop */
{1, 1, BLENDFACT_DST_ALPHA, BLENDFACT_INV_SRC_ALPHA},
/* AtopReverse */
{1, 1, BLENDFACT_INV_DST_ALPHA, BLENDFACT_SRC_ALPHA},
/* Xor */
{1, 1, BLENDFACT_INV_DST_ALPHA, BLENDFACT_INV_SRC_ALPHA},
/* Add */
{0, 0, BLENDFACT_ONE, BLENDFACT_ONE},
};
static struct formatinfo i915_tex_formats[] = {
{PICT_a8r8g8b8, MAPSURF_32BIT | MT_32BIT_ARGB8888 },
{PICT_x8r8g8b8, MAPSURF_32BIT | MT_32BIT_XRGB8888 },
{PICT_a8b8g8r8, MAPSURF_32BIT | MT_32BIT_ABGR8888 },
{PICT_x8b8g8r8, MAPSURF_32BIT | MT_32BIT_XBGR8888 },
{PICT_r5g6b5, MAPSURF_16BIT | MT_16BIT_RGB565 },
{PICT_a1r5g5b5, MAPSURF_16BIT | MT_16BIT_ARGB1555 },
{PICT_x1r5g5b5, MAPSURF_16BIT | MT_16BIT_ARGB1555 },
{PICT_a4r4g4b4, MAPSURF_16BIT | MT_16BIT_ARGB4444 },
{PICT_x4r4g4b4, MAPSURF_16BIT | MT_16BIT_ARGB4444 },
{PICT_a8, MAPSURF_8BIT | MT_8BIT_A8 },
};
static uint32_t i915_get_blend_cntl(int op, PicturePtr pMask,
uint32_t dst_format)
{
uint32_t sblend, dblend;
sblend = i915_blend_op[op].src_blend;
dblend = i915_blend_op[op].dst_blend;
/* If there's no dst alpha channel, adjust the blend op so that we'll treat
* it as always 1.
*/
if (PICT_FORMAT_A(dst_format) == 0 && i915_blend_op[op].dst_alpha) {
if (sblend == BLENDFACT_DST_ALPHA)
sblend = BLENDFACT_ONE;
else if (sblend == BLENDFACT_INV_DST_ALPHA)
sblend = BLENDFACT_ZERO;
}
/* i915 engine reads 8bit color buffer into green channel in cases
like color buffer blending .etc, and also writes back green channel.
So with dst_alpha blend we should use color factor. See spec on
"8-bit rendering" */
if ((dst_format == PICT_a8) && i915_blend_op[op].dst_alpha) {
if (sblend == BLENDFACT_DST_ALPHA)
sblend = BLENDFACT_DST_COLR;
else if (sblend == BLENDFACT_INV_DST_ALPHA)
sblend = BLENDFACT_INV_DST_COLR;
}
/* If the source alpha is being used, then we should only be in a case
* where the source blend factor is 0, and the source blend value is the
* mask channels multiplied by the source picture's alpha.
*/
if (pMask && pMask->componentAlpha && PICT_FORMAT_RGB(pMask->format) &&
i915_blend_op[op].src_alpha)
{
if (dblend == BLENDFACT_SRC_ALPHA) {
dblend = BLENDFACT_SRC_COLR;
} else if (dblend == BLENDFACT_INV_SRC_ALPHA) {
dblend = BLENDFACT_INV_SRC_COLR;
}
}
return (sblend << S6_CBUF_SRC_BLEND_FACT_SHIFT) |
(dblend << S6_CBUF_DST_BLEND_FACT_SHIFT);
}
static Bool i915_get_dest_format(PicturePtr pDstPicture, uint32_t *dst_format)
{
ScrnInfoPtr pScrn = xf86Screens[pDstPicture->pDrawable->pScreen->myNum];
switch (pDstPicture->format) {
case PICT_a8r8g8b8:
case PICT_x8r8g8b8:
*dst_format = COLR_BUF_ARGB8888;
break;
case PICT_r5g6b5:
*dst_format = COLR_BUF_RGB565;
break;
case PICT_a1r5g5b5:
case PICT_x1r5g5b5:
*dst_format = COLR_BUF_ARGB1555;
break;
case PICT_a8:
*dst_format = COLR_BUF_8BIT;
break;
case PICT_a4r4g4b4:
case PICT_x4r4g4b4:
*dst_format = COLR_BUF_ARGB4444;
break;
default:
I830FALLBACK("Unsupported dest format 0x%x\n",
(int)pDstPicture->format);
}
return TRUE;
}
static Bool i915_check_composite_texture(PicturePtr pPict, int unit)
{
ScrnInfoPtr pScrn = xf86Screens[pPict->pDrawable->pScreen->myNum];
int w = pPict->pDrawable->width;
int h = pPict->pDrawable->height;
int i;
if ((w > 2048) || (h > 2048))
I830FALLBACK("Picture w/h too large (%dx%d)\n", w, h);
for (i = 0; i < sizeof(i915_tex_formats) / sizeof(i915_tex_formats[0]);
i++)
{
if (i915_tex_formats[i].fmt == pPict->format)
break;
}
if (i == sizeof(i915_tex_formats) / sizeof(i915_tex_formats[0]))
I830FALLBACK("Unsupported picture format 0x%x\n",
(int)pPict->format);
if (pPict->repeatType > RepeatReflect)
I830FALLBACK("Unsupported picture repeat %d\n", pPict->repeatType);
if (pPict->filter != PictFilterNearest &&
pPict->filter != PictFilterBilinear)
I830FALLBACK("Unsupported filter 0x%x\n", pPict->filter);
return TRUE;
}
Bool
i915_check_composite(int op, PicturePtr pSrcPicture, PicturePtr pMaskPicture,
PicturePtr pDstPicture)
{
ScrnInfoPtr pScrn = xf86Screens[pDstPicture->pDrawable->pScreen->myNum];
uint32_t tmp1;
/* Check for unsupported compositing operations. */
if (op >= sizeof(i915_blend_op) / sizeof(i915_blend_op[0]))
I830FALLBACK("Unsupported Composite op 0x%x\n", op);
if (pMaskPicture != NULL && pMaskPicture->componentAlpha &&
PICT_FORMAT_RGB(pMaskPicture->format))
{
/* Check if it's component alpha that relies on a source alpha and on
* the source value. We can only get one of those into the single
* source value that we get to blend with.
*/
if (i915_blend_op[op].src_alpha &&
(i915_blend_op[op].src_blend != BLENDFACT_ZERO))
I830FALLBACK("Component alpha not supported with source "
"alpha and source value blending.\n");
}
if (!i915_check_composite_texture(pSrcPicture, 0))
I830FALLBACK("Check Src picture texture\n");
if (pMaskPicture != NULL && !i915_check_composite_texture(pMaskPicture, 1))
I830FALLBACK("Check Mask picture texture\n");
if (!i915_get_dest_format(pDstPicture, &tmp1))
I830FALLBACK("Get Color buffer format\n");
return TRUE;
}
static Bool
i915_texture_setup(PicturePtr pPict, PixmapPtr pPix, int unit)
{
ScrnInfoPtr pScrn = xf86Screens[pPict->pDrawable->pScreen->myNum];
I830Ptr pI830 = I830PTR(pScrn);
uint32_t format, pitch, filter;
int w, h, i;
uint32_t wrap_mode;
pitch = intel_get_pixmap_pitch(pPix);
w = pPict->pDrawable->width;
h = pPict->pDrawable->height;
pI830->scale_units[unit][0] = pPix->drawable.width;
pI830->scale_units[unit][1] = pPix->drawable.height;
for (i = 0; i < sizeof(i915_tex_formats) / sizeof(i915_tex_formats[0]);
i++)
{
if (i915_tex_formats[i].fmt == pPict->format)
break;
}
if (i == sizeof(i915_tex_formats)/ sizeof(i915_tex_formats[0]))
I830FALLBACK("unknown texture format\n");
format = i915_tex_formats[i].card_fmt;
switch (pPict->repeatType) {
case RepeatNone:
wrap_mode = TEXCOORDMODE_CLAMP_BORDER;
break;
case RepeatNormal:
wrap_mode = TEXCOORDMODE_WRAP;
break;
case RepeatPad:
wrap_mode = TEXCOORDMODE_CLAMP_EDGE;
break;
case RepeatReflect:
wrap_mode = TEXCOORDMODE_MIRROR;
break;
default:
FatalError("Unkown repeat type %d\n", pPict->repeatType);
}
switch (pPict->filter) {
case PictFilterNearest:
filter = (FILTER_NEAREST << SS2_MAG_FILTER_SHIFT) |
(FILTER_NEAREST << SS2_MIN_FILTER_SHIFT);
break;
case PictFilterBilinear:
filter = (FILTER_LINEAR << SS2_MAG_FILTER_SHIFT) |
(FILTER_LINEAR << SS2_MIN_FILTER_SHIFT);
break;
default:
filter = 0;
I830FALLBACK("Bad filter 0x%x\n", pPict->filter);
}
pI830->mapstate[unit * 3 + 0] = 0; /* offset filled in at emit time */
pI830->mapstate[unit * 3 + 1] = format |
MS3_USE_FENCE_REGS |
((pPix->drawable.height - 1) << MS3_HEIGHT_SHIFT) |
((pPix->drawable.width - 1) << MS3_WIDTH_SHIFT);
pI830->mapstate[unit * 3 + 2] = ((pitch / 4) - 1) << MS4_PITCH_SHIFT;
pI830->samplerstate[unit * 3 + 0] = (MIPFILTER_NONE <<
SS2_MIP_FILTER_SHIFT);
pI830->samplerstate[unit * 3 + 0] |= filter;
pI830->samplerstate[unit * 3 + 1] = SS3_NORMALIZED_COORDS;
pI830->samplerstate[unit * 3 + 1] |= wrap_mode << SS3_TCX_ADDR_MODE_SHIFT;
pI830->samplerstate[unit * 3 + 1] |= wrap_mode << SS3_TCY_ADDR_MODE_SHIFT;
pI830->samplerstate[unit * 3 + 1] |= unit << SS3_TEXTUREMAP_INDEX_SHIFT;
pI830->samplerstate[unit * 3 + 2] = 0x00000000; /* border color */
pI830->transform[unit] = pPict->transform;
return TRUE;
}
Bool
i915_prepare_composite(int op, PicturePtr pSrcPicture,
PicturePtr pMaskPicture, PicturePtr pDstPicture,
PixmapPtr pSrc, PixmapPtr pMask, PixmapPtr pDst)
{
ScrnInfoPtr pScrn = xf86Screens[pSrcPicture->pDrawable->pScreen->myNum];
I830Ptr pI830 = I830PTR(pScrn);
uint32_t dst_format, dst_pitch;
uint32_t blendctl;
int out_reg = FS_OC;
FS_LOCALS(20);
Bool is_affine_src, is_affine_mask;
Bool is_nearest = FALSE;
i830_exa_check_pitch_3d(pSrc);
if (pMask)
i830_exa_check_pitch_3d(pMask);
i830_exa_check_pitch_3d(pDst);
IntelEmitInvarientState(pScrn);
*pI830->last_3d = LAST_3D_RENDER;
if (!i915_get_dest_format(pDstPicture, &dst_format))
return FALSE;
dst_pitch = intel_get_pixmap_pitch(pDst);
if (!i915_texture_setup(pSrcPicture, pSrc, 0))
I830FALLBACK("fail to setup src texture\n");
if (pSrcPicture->filter == PictFilterNearest)
is_nearest = TRUE;
if (pMask != NULL) {
if (!i915_texture_setup(pMaskPicture, pMask, 1))
I830FALLBACK("fail to setup mask texture\n");
if (pMaskPicture->filter == PictFilterNearest)
is_nearest = TRUE;
} else {
pI830->transform[1] = NULL;
pI830->scale_units[1][0] = -1;
pI830->scale_units[1][1] = -1;
}
is_affine_src = i830_transform_is_affine (pI830->transform[0]);
is_affine_mask = i830_transform_is_affine (pI830->transform[1]);
if (is_nearest)
pI830->coord_adjust = -0.125;
else
pI830->coord_adjust = 0;
if (pMask == NULL) {
BEGIN_BATCH(10);
OUT_BATCH(_3DSTATE_MAP_STATE | 3);
OUT_BATCH(0x00000001); /* map 0 */
OUT_RELOC_PIXMAP(pSrc, I915_GEM_DOMAIN_SAMPLER, 0, 0);
OUT_BATCH(pI830->mapstate[1]);
OUT_BATCH(pI830->mapstate[2]);
OUT_BATCH(_3DSTATE_SAMPLER_STATE | 3);
OUT_BATCH(0x00000001); /* sampler 0 */
OUT_BATCH(pI830->samplerstate[0]);
OUT_BATCH(pI830->samplerstate[1]);
OUT_BATCH(pI830->samplerstate[2]);
ADVANCE_BATCH();
} else {
BEGIN_BATCH(16);
OUT_BATCH(_3DSTATE_MAP_STATE | 6);
OUT_BATCH(0x00000003); /* map 0,1 */
OUT_RELOC_PIXMAP(pSrc, I915_GEM_DOMAIN_SAMPLER, 0, 0);
OUT_BATCH(pI830->mapstate[1]);
OUT_BATCH(pI830->mapstate[2]);
OUT_RELOC_PIXMAP(pMask, I915_GEM_DOMAIN_SAMPLER, 0, 0);
OUT_BATCH(pI830->mapstate[4]);
OUT_BATCH(pI830->mapstate[5]);
OUT_BATCH(_3DSTATE_SAMPLER_STATE | 6);
OUT_BATCH(0x00000003); /* sampler 0,1 */
OUT_BATCH(pI830->samplerstate[0]);
OUT_BATCH(pI830->samplerstate[1]);
OUT_BATCH(pI830->samplerstate[2]);
OUT_BATCH(pI830->samplerstate[3]);
OUT_BATCH(pI830->samplerstate[4]);
OUT_BATCH(pI830->samplerstate[5]);
ADVANCE_BATCH();
}
{
uint32_t ss2;
BEGIN_BATCH(16);
OUT_BATCH(_3DSTATE_BUF_INFO_CMD);
OUT_BATCH(BUF_3D_ID_COLOR_BACK| BUF_3D_USE_FENCE|
BUF_3D_PITCH(dst_pitch));
OUT_RELOC_PIXMAP(pDst, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, 0);
OUT_BATCH(_3DSTATE_DST_BUF_VARS_CMD);
OUT_BATCH(dst_format);
OUT_BATCH(_3DSTATE_LOAD_STATE_IMMEDIATE_1 | I1_LOAD_S(2) |
I1_LOAD_S(4) | I1_LOAD_S(5) | I1_LOAD_S(6) | 3);
ss2 = S2_TEXCOORD_FMT(0, is_affine_src ? TEXCOORDFMT_2D : TEXCOORDFMT_4D);
if (pMask)
ss2 |= S2_TEXCOORD_FMT(1, is_affine_mask ? TEXCOORDFMT_2D : TEXCOORDFMT_4D);
else
ss2 |= S2_TEXCOORD_FMT(1, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(2, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(3, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(4, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(5, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(6, TEXCOORDFMT_NOT_PRESENT);
ss2 |= S2_TEXCOORD_FMT(7, TEXCOORDFMT_NOT_PRESENT);
OUT_BATCH(ss2);
OUT_BATCH((1 << S4_POINT_WIDTH_SHIFT) | S4_LINE_WIDTH_ONE |
S4_CULLMODE_NONE| S4_VFMT_XY);
blendctl = i915_get_blend_cntl(op, pMaskPicture, pDstPicture->format);
OUT_BATCH(0x00000000); /* Disable stencil buffer */
OUT_BATCH(S6_CBUF_BLEND_ENABLE | S6_COLOR_WRITE_ENABLE |
(BLENDFUNC_ADD << S6_CBUF_BLEND_FUNC_SHIFT) | blendctl);
/* draw rect is unconditional */
OUT_BATCH(_3DSTATE_DRAW_RECT_CMD);
OUT_BATCH(0x00000000);
OUT_BATCH(0x00000000); /* ymin, xmin*/
OUT_BATCH(DRAW_YMAX(pDst->drawable.height - 1) |
DRAW_XMAX(pDst->drawable.width - 1));
OUT_BATCH(0x00000000); /* yorig, xorig (relate to color buffer?)*/
OUT_BATCH(MI_NOOP);
ADVANCE_BATCH();
}
if (dst_format == COLR_BUF_8BIT)
out_reg = FS_U0;
FS_BEGIN();
/* Declare the registers necessary for our program. I don't think the
* S then T ordering is necessary.
*/
i915_fs_dcl(FS_S0);
if (pMask)
i915_fs_dcl(FS_S1);
i915_fs_dcl(FS_T0);
if (pMask)
i915_fs_dcl(FS_T1);
/* Load the pSrcPicture texel */
if (is_affine_src) {
i915_fs_texld(FS_R0, FS_S0, FS_T0);
} else {
i915_fs_texldp(FS_R0, FS_S0, FS_T0);
}
/* If the texture lacks an alpha channel, force the alpha to 1. */
if (PICT_FORMAT_A(pSrcPicture->format) == 0)
i915_fs_mov_masked(FS_R0, MASK_W, i915_fs_operand_one());
if (!pMask) {
/* No mask, so move to output color */
i915_fs_mov(out_reg, i915_fs_operand_reg(FS_R0));
} else {
/* Load the pMaskPicture texel */
if (is_affine_mask) {
i915_fs_texld(FS_R1, FS_S1, FS_T1);
} else {
i915_fs_texldp(FS_R1, FS_S1, FS_T1);
}
/* If the texture lacks an alpha channel, force the alpha to 1. */
if (PICT_FORMAT_A(pMaskPicture->format) == 0)
i915_fs_mov_masked(FS_R1, MASK_W, i915_fs_operand_one());
/* If component alpha is active in the mask and the blend operation
* uses the source alpha, then we know we don't need the source
* value (otherwise we would have hit a fallback earlier), so we
* provide the source alpha (src.A * mask.X) as output color.
* Conversely, if CA is set and we don't need the source alpha, then
* we produce the source value (src.X * mask.X) and the source alpha
* is unused.. Otherwise, we provide the non-CA source value
* (src.X * mask.A).
*/
if (pMaskPicture->componentAlpha &&
PICT_FORMAT_RGB(pMaskPicture->format))
{
if (i915_blend_op[op].src_alpha) {
i915_fs_mul(out_reg, i915_fs_operand(FS_R0, W, W, W, W),
i915_fs_operand_reg(FS_R1));
} else {
i915_fs_mul(out_reg, i915_fs_operand_reg(FS_R0),
i915_fs_operand_reg(FS_R1));
}
} else {
i915_fs_mul(out_reg, i915_fs_operand_reg(FS_R0),
i915_fs_operand(FS_R1, W, W, W, W));
}
}
if (dst_format == COLR_BUF_8BIT)
i915_fs_mov(FS_OC, i915_fs_operand(out_reg, W, W, W, W));
FS_END();
return TRUE;
}
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