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-rw-r--r--src/i915_render.c481
1 files changed, 481 insertions, 0 deletions
diff --git a/src/i915_render.c b/src/i915_render.c
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+++ b/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"
+
+#ifdef I830DEBUG
+#define DEBUG_I830FALLBACK 1
+#endif
+
+#ifdef DEBUG_I830FALLBACK
+#define I830FALLBACK(s, arg...) \
+do { \
+ DPRINTF(PFX, "EXA fallback: " s "\n", ##arg); \
+ return FALSE; \
+} while(0)
+#else
+#define I830FALLBACK(s, arg...) \
+do { \
+ return FALSE; \
+} while(0)
+#endif
+
+struct formatinfo {
+ int fmt;
+ CARD32 card_fmt;
+};
+
+struct blendinfo {
+ Bool dst_alpha;
+ Bool src_alpha;
+ CARD32 src_blend;
+ CARD32 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 CARD32 i915_get_blend_cntl(int op, PicturePtr pMask, CARD32 dst_format)
+{
+ CARD32 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;
+ }
+
+ /* 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, CARD32 *dst_format)
+{
+ 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;
+ /* COLR_BUF_8BIT is special for YUV surfaces. While we may end up being
+ * able to use it depending on how the hardware implements it, disable it
+ * for now while we don't know what exactly it does (what channel does it
+ * read from?
+ */
+ /*
+ 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)
+{
+ int w = pPict->pDrawable->width;
+ int h = pPict->pDrawable->height;
+ int i;
+
+ if ((w > 0x7ff) || (h > 0x7ff))
+ 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->repeat && pPict->repeatType != RepeatNormal)
+ I830FALLBACK("extended repeat (%d) not supported\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)
+{
+ CARD32 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);
+ CARD32 format, offset, pitch, filter;
+ int w, h, i;
+ CARD32 wrap_mode = TEXCOORDMODE_CLAMP_BORDER;
+
+ offset = intel_get_pixmap_offset(pPix);
+ 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;
+
+ if (pPict->repeat)
+ wrap_mode = TEXCOORDMODE_WRAP;
+
+ 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] = offset;
+ pI830->mapstate[unit * 3 + 1] = format |
+ ((pPix->drawable.height - 1) << MS3_HEIGHT_SHIFT) |
+ ((pPix->drawable.width - 1) << MS3_WIDTH_SHIFT);
+ if (!pI830->disableTiling)
+ pI830->samplerstate[unit * 3 + 1] |= MS3_USE_FENCE_REGS;
+ 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);
+ CARD32 dst_format, dst_offset, dst_pitch;
+ CARD32 blendctl;
+
+#ifdef I830DEBUG
+ ErrorF("Enter i915 prepareComposite\n");
+#endif
+
+ pI830->last_3d = LAST_3D_RENDER;
+
+ i915_get_dest_format(pDstPicture, &dst_format);
+ dst_offset = intel_get_pixmap_offset(pDst);
+ dst_pitch = intel_get_pixmap_pitch(pDst);
+ FS_LOCALS(20);
+
+ if (!i915_texture_setup(pSrcPicture, pSrc, 0))
+ I830FALLBACK("fail to setup src texture\n");
+ if (pMask != NULL) {
+ if (!i915_texture_setup(pMaskPicture, pMask, 1))
+ I830FALLBACK("fail to setup mask texture\n");
+ } else {
+ pI830->transform[1] = NULL;
+ pI830->scale_units[1][0] = -1;
+ pI830->scale_units[1][1] = -1;
+ }
+
+ if (pMask == NULL) {
+ BEGIN_LP_RING(10);
+ OUT_RING(_3DSTATE_MAP_STATE | 3);
+ OUT_RING(0x00000001); /* map 0 */
+ OUT_RING(pI830->mapstate[0]);
+ OUT_RING(pI830->mapstate[1]);
+ OUT_RING(pI830->mapstate[2]);
+
+ OUT_RING(_3DSTATE_SAMPLER_STATE | 3);
+ OUT_RING(0x00000001); /* sampler 0 */
+ OUT_RING(pI830->samplerstate[0]);
+ OUT_RING(pI830->samplerstate[1]);
+ OUT_RING(pI830->samplerstate[2]);
+ ADVANCE_LP_RING();
+ } else {
+ BEGIN_LP_RING(16);
+ OUT_RING(_3DSTATE_MAP_STATE | 6);
+ OUT_RING(0x00000003); /* map 0,1 */
+ OUT_RING(pI830->mapstate[0]);
+ OUT_RING(pI830->mapstate[1]);
+ OUT_RING(pI830->mapstate[2]);
+ OUT_RING(pI830->mapstate[3]);
+ OUT_RING(pI830->mapstate[4]);
+ OUT_RING(pI830->mapstate[5]);
+
+ OUT_RING(_3DSTATE_SAMPLER_STATE | 6);
+ OUT_RING(0x00000003); /* sampler 0,1 */
+ OUT_RING(pI830->samplerstate[0]);
+ OUT_RING(pI830->samplerstate[1]);
+ OUT_RING(pI830->samplerstate[2]);
+ OUT_RING(pI830->samplerstate[3]);
+ OUT_RING(pI830->samplerstate[4]);
+ OUT_RING(pI830->samplerstate[5]);
+ ADVANCE_LP_RING();
+ }
+ {
+ CARD32 ss2;
+
+ BEGIN_LP_RING(18);
+ /* color buffer
+ * XXX: Need to add USE_FENCE if we ever tile the X Server's pixmaps or
+ * visible screen.
+ */
+ OUT_RING(_3DSTATE_BUF_INFO_CMD);
+ OUT_RING(BUF_3D_ID_COLOR_BACK| BUF_3D_PITCH(dst_pitch));
+ OUT_RING(BUF_3D_ADDR(dst_offset));
+
+ OUT_RING(_3DSTATE_DST_BUF_VARS_CMD);
+ OUT_RING(dst_format);
+
+ OUT_RING(_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, TEXCOORDFMT_2D);
+ if (pMask)
+ ss2 |= S2_TEXCOORD_FMT(1, TEXCOORDFMT_2D);
+ 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_RING(ss2);
+ OUT_RING((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_RING(0x00000000); /* Disable stencil buffer */
+ OUT_RING(S6_CBUF_BLEND_ENABLE | S6_COLOR_WRITE_ENABLE |
+ (BLENDFUNC_ADD << S6_CBUF_BLEND_FUNC_SHIFT) | blendctl);
+
+ /* issue a flush */
+ OUT_RING(MI_FLUSH | MI_WRITE_DIRTY_STATE | MI_INVALIDATE_MAP_CACHE);
+ OUT_RING(MI_NOOP);
+
+ /* draw rect is unconditional */
+ OUT_RING(_3DSTATE_DRAW_RECT_CMD);
+ OUT_RING(0x00000000);
+ OUT_RING(0x00000000); /* ymin, xmin*/
+ OUT_RING(DRAW_YMAX(pDst->drawable.height - 1) |
+ DRAW_XMAX(pDst->drawable.width - 1));
+ OUT_RING(0x00000000); /* yorig, xorig (relate to color buffer?)*/
+ OUT_RING(MI_NOOP);
+ ADVANCE_LP_RING();
+ }
+
+ 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 */
+ i915_fs_texld(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(FS_OC, i915_fs_operand_reg(FS_R0));
+ } else {
+ /* Load the pMaskPicture texel */
+ i915_fs_texld(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(FS_OC, i915_fs_operand(FS_R0, W, W, W, W),
+ i915_fs_operand_reg(FS_R1));
+ } else {
+ i915_fs_mul(FS_OC, i915_fs_operand_reg(FS_R0),
+ i915_fs_operand_reg(FS_R1));
+ }
+ } else {
+ i915_fs_mul(FS_OC, i915_fs_operand_reg(FS_R0),
+ i915_fs_operand(FS_R1, W, W, W, W));
+ }
+ }
+ FS_END();
+
+ return TRUE;
+}
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