From dbe63ed3b688fc1b2714d1418a031210c9e00d3b Mon Sep 17 00:00:00 2001 From: Luca Barbieri Date: Mon, 22 Feb 2010 20:14:32 +0100 Subject: nvfx: move nv04_surface_2d.c into nvfx directory It is only used on pre-nv50 and nvfx is the only Gallium pre-nv50 driver. --- src/gallium/drivers/nvfx/nv04_surface_2d.c | 545 +++++++++++++++++++++++++++++ 1 file changed, 545 insertions(+) create mode 100644 src/gallium/drivers/nvfx/nv04_surface_2d.c (limited to 'src/gallium/drivers/nvfx/nv04_surface_2d.c') diff --git a/src/gallium/drivers/nvfx/nv04_surface_2d.c b/src/gallium/drivers/nvfx/nv04_surface_2d.c new file mode 100644 index 0000000000..ed18c9f24d --- /dev/null +++ b/src/gallium/drivers/nvfx/nv04_surface_2d.c @@ -0,0 +1,545 @@ +#include "pipe/p_context.h" +#include "pipe/p_format.h" +#include "util/u_format.h" +#include "util/u_math.h" +#include "util/u_memory.h" + +#include "nouveau/nouveau_winsys.h" +#include "nouveau/nouveau_util.h" +#include "nouveau/nouveau_screen.h" +#include "nv04_surface_2d.h" + +static INLINE int +nv04_surface_format(enum pipe_format format) +{ + switch (format) { + case PIPE_FORMAT_A8_UNORM: + case PIPE_FORMAT_L8_UNORM: + case PIPE_FORMAT_I8_UNORM: + return NV04_CONTEXT_SURFACES_2D_FORMAT_Y8; + case PIPE_FORMAT_R16_SNORM: + case PIPE_FORMAT_B5G6R5_UNORM: + case PIPE_FORMAT_Z16_UNORM: + case PIPE_FORMAT_L8A8_UNORM: + return NV04_CONTEXT_SURFACES_2D_FORMAT_R5G6B5; + case PIPE_FORMAT_B8G8R8X8_UNORM: + case PIPE_FORMAT_B8G8R8A8_UNORM: + return NV04_CONTEXT_SURFACES_2D_FORMAT_A8R8G8B8; + case PIPE_FORMAT_S8Z24_UNORM: + case PIPE_FORMAT_X8Z24_UNORM: + return NV04_CONTEXT_SURFACES_2D_FORMAT_Y32; + default: + return -1; + } +} + +static INLINE int +nv04_rect_format(enum pipe_format format) +{ + switch (format) { + case PIPE_FORMAT_A8_UNORM: + return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A8R8G8B8; + case PIPE_FORMAT_B5G6R5_UNORM: + case PIPE_FORMAT_L8A8_UNORM: + case PIPE_FORMAT_Z16_UNORM: + return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A16R5G6B5; + case PIPE_FORMAT_B8G8R8X8_UNORM: + case PIPE_FORMAT_B8G8R8A8_UNORM: + case PIPE_FORMAT_S8Z24_UNORM: + case PIPE_FORMAT_X8Z24_UNORM: + return NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT_A8R8G8B8; + default: + return -1; + } +} + +static INLINE int +nv04_scaled_image_format(enum pipe_format format) +{ + switch (format) { + case PIPE_FORMAT_A8_UNORM: + case PIPE_FORMAT_L8_UNORM: + case PIPE_FORMAT_I8_UNORM: + return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_Y8; + case PIPE_FORMAT_B5G5R5A1_UNORM: + return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_A1R5G5B5; + case PIPE_FORMAT_B8G8R8A8_UNORM: + return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_A8R8G8B8; + case PIPE_FORMAT_B8G8R8X8_UNORM: + return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_X8R8G8B8; + case PIPE_FORMAT_B5G6R5_UNORM: + case PIPE_FORMAT_R16_SNORM: + case PIPE_FORMAT_L8A8_UNORM: + return NV03_SCALED_IMAGE_FROM_MEMORY_COLOR_FORMAT_R5G6B5; + default: + return -1; + } +} + +static INLINE unsigned +nv04_swizzle_bits_square(unsigned x, unsigned y) +{ + unsigned u = (x & 0x001) << 0 | + (x & 0x002) << 1 | + (x & 0x004) << 2 | + (x & 0x008) << 3 | + (x & 0x010) << 4 | + (x & 0x020) << 5 | + (x & 0x040) << 6 | + (x & 0x080) << 7 | + (x & 0x100) << 8 | + (x & 0x200) << 9 | + (x & 0x400) << 10 | + (x & 0x800) << 11; + + unsigned v = (y & 0x001) << 1 | + (y & 0x002) << 2 | + (y & 0x004) << 3 | + (y & 0x008) << 4 | + (y & 0x010) << 5 | + (y & 0x020) << 6 | + (y & 0x040) << 7 | + (y & 0x080) << 8 | + (y & 0x100) << 9 | + (y & 0x200) << 10 | + (y & 0x400) << 11 | + (y & 0x800) << 12; + return v | u; +} + +/* rectangular swizzled textures are linear concatenations of swizzled square tiles */ +static INLINE unsigned +nv04_swizzle_bits(unsigned x, unsigned y, unsigned w, unsigned h) +{ + unsigned s = MIN2(w, h); + unsigned m = s - 1; + return (((x | y) & ~m) * s) | nv04_swizzle_bits_square(x & m, y & m); +} + +static int +nv04_surface_copy_swizzle(struct nv04_surface_2d *ctx, + struct pipe_surface *dst, int dx, int dy, + struct pipe_surface *src, int sx, int sy, + int w, int h) +{ + struct nouveau_channel *chan = ctx->swzsurf->channel; + struct nouveau_grobj *swzsurf = ctx->swzsurf; + struct nouveau_grobj *sifm = ctx->sifm; + struct nouveau_bo *src_bo = nouveau_bo(ctx->buf(src)); + struct nouveau_bo *dst_bo = nouveau_bo(ctx->buf(dst)); + const unsigned src_pitch = ((struct nv04_surface *)src)->pitch; + /* Max width & height may not be the same on all HW, but must be POT */ + const unsigned max_w = 1024; + const unsigned max_h = 1024; + unsigned sub_w = w > max_w ? max_w : w; + unsigned sub_h = h > max_h ? max_h : h; + unsigned x; + unsigned y; + + /* Swizzled surfaces must be POT */ + assert(util_is_pot(dst->width) && util_is_pot(dst->height)); + + /* If area is too large to copy in one shot we must copy it in POT chunks to meet alignment requirements */ + assert(sub_w == w || util_is_pot(sub_w)); + assert(sub_h == h || util_is_pot(sub_h)); + + MARK_RING (chan, 8 + ((w+sub_w)/sub_w)*((h+sub_h)/sub_h)*17, 2 + + ((w+sub_w)/sub_w)*((h+sub_h)/sub_h)*2); + + BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_DMA_IMAGE, 1); + OUT_RELOCo(chan, dst_bo, + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + + BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_FORMAT, 1); + OUT_RING (chan, nv04_surface_format(dst->format) | + log2i(dst->width) << NV04_SWIZZLED_SURFACE_FORMAT_BASE_SIZE_U_SHIFT | + log2i(dst->height) << NV04_SWIZZLED_SURFACE_FORMAT_BASE_SIZE_V_SHIFT); + + BEGIN_RING(chan, sifm, NV03_SCALED_IMAGE_FROM_MEMORY_DMA_IMAGE, 1); + OUT_RELOCo(chan, src_bo, + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD); + BEGIN_RING(chan, sifm, NV04_SCALED_IMAGE_FROM_MEMORY_SURFACE, 1); + OUT_RING (chan, swzsurf->handle); + + for (y = 0; y < h; y += sub_h) { + sub_h = MIN2(sub_h, h - y); + + for (x = 0; x < w; x += sub_w) { + sub_w = MIN2(sub_w, w - x); + + assert(!(dst->offset & 63)); + + BEGIN_RING(chan, swzsurf, NV04_SWIZZLED_SURFACE_OFFSET, 1); + OUT_RELOCl(chan, dst_bo, dst->offset, + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + + BEGIN_RING(chan, sifm, NV05_SCALED_IMAGE_FROM_MEMORY_COLOR_CONVERSION, 9); + OUT_RING (chan, NV05_SCALED_IMAGE_FROM_MEMORY_COLOR_CONVERSION_TRUNCATE); + OUT_RING (chan, nv04_scaled_image_format(src->format)); + OUT_RING (chan, NV03_SCALED_IMAGE_FROM_MEMORY_OPERATION_SRCCOPY); + OUT_RING (chan, (x + dx) | ((y + dy) << NV03_SCALED_IMAGE_FROM_MEMORY_CLIP_POINT_Y_SHIFT)); + OUT_RING (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_CLIP_SIZE_H_SHIFT | sub_w); + OUT_RING (chan, (x + dx) | ((y + dy) << NV03_SCALED_IMAGE_FROM_MEMORY_OUT_POINT_Y_SHIFT)); + OUT_RING (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_OUT_SIZE_H_SHIFT | sub_w); + OUT_RING (chan, 1 << 20); + OUT_RING (chan, 1 << 20); + + BEGIN_RING(chan, sifm, NV03_SCALED_IMAGE_FROM_MEMORY_SIZE, 4); + OUT_RING (chan, sub_h << NV03_SCALED_IMAGE_FROM_MEMORY_SIZE_H_SHIFT | sub_w); + OUT_RING (chan, src_pitch | + NV03_SCALED_IMAGE_FROM_MEMORY_FORMAT_ORIGIN_CENTER | + NV03_SCALED_IMAGE_FROM_MEMORY_FORMAT_FILTER_POINT_SAMPLE); + OUT_RELOCl(chan, src_bo, src->offset + (sy+y) * src_pitch + (sx+x) * util_format_get_blocksize(src->texture->format), + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD); + OUT_RING (chan, 0); + } + } + + return 0; +} + +static int +nv04_surface_copy_m2mf(struct nv04_surface_2d *ctx, + struct pipe_surface *dst, int dx, int dy, + struct pipe_surface *src, int sx, int sy, int w, int h) +{ + struct nouveau_channel *chan = ctx->m2mf->channel; + struct nouveau_grobj *m2mf = ctx->m2mf; + struct nouveau_bo *src_bo = nouveau_bo(ctx->buf(src)); + struct nouveau_bo *dst_bo = nouveau_bo(ctx->buf(dst)); + unsigned src_pitch = ((struct nv04_surface *)src)->pitch; + unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch; + unsigned dst_offset = dst->offset + dy * dst_pitch + + dx * util_format_get_blocksize(dst->texture->format); + unsigned src_offset = src->offset + sy * src_pitch + + sx * util_format_get_blocksize(src->texture->format); + + MARK_RING (chan, 3 + ((h / 2047) + 1) * 9, 2 + ((h / 2047) + 1) * 2); + BEGIN_RING(chan, m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_DMA_BUFFER_IN, 2); + OUT_RELOCo(chan, src_bo, + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_RD); + OUT_RELOCo(chan, dst_bo, + NOUVEAU_BO_GART | NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + + while (h) { + int count = (h > 2047) ? 2047 : h; + + BEGIN_RING(chan, m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN, 8); + OUT_RELOCl(chan, src_bo, src_offset, + NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD); + OUT_RELOCl(chan, dst_bo, dst_offset, + NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_WR); + OUT_RING (chan, src_pitch); + OUT_RING (chan, dst_pitch); + OUT_RING (chan, w * util_format_get_blocksize(src->texture->format)); + OUT_RING (chan, count); + OUT_RING (chan, 0x0101); + OUT_RING (chan, 0); + + h -= count; + src_offset += src_pitch * count; + dst_offset += dst_pitch * count; + } + + return 0; +} + +static int +nv04_surface_copy_blit(struct nv04_surface_2d *ctx, struct pipe_surface *dst, + int dx, int dy, struct pipe_surface *src, int sx, int sy, + int w, int h) +{ + struct nouveau_channel *chan = ctx->surf2d->channel; + struct nouveau_grobj *surf2d = ctx->surf2d; + struct nouveau_grobj *blit = ctx->blit; + struct nouveau_bo *src_bo = nouveau_bo(ctx->buf(src)); + struct nouveau_bo *dst_bo = nouveau_bo(ctx->buf(dst)); + unsigned src_pitch = ((struct nv04_surface *)src)->pitch; + unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch; + int format; + + format = nv04_surface_format(dst->format); + if (format < 0) + return 1; + + MARK_RING (chan, 12, 4); + BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2); + OUT_RELOCo(chan, src_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD); + OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_FORMAT, 4); + OUT_RING (chan, format); + OUT_RING (chan, (dst_pitch << 16) | src_pitch); + OUT_RELOCl(chan, src_bo, src->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_RD); + OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + + BEGIN_RING(chan, blit, 0x0300, 3); + OUT_RING (chan, (sy << 16) | sx); + OUT_RING (chan, (dy << 16) | dx); + OUT_RING (chan, ( h << 16) | w); + + return 0; +} + +static void +nv04_surface_copy(struct nv04_surface_2d *ctx, struct pipe_surface *dst, + int dx, int dy, struct pipe_surface *src, int sx, int sy, + int w, int h) +{ + unsigned src_pitch = ((struct nv04_surface *)src)->pitch; + unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch; + int src_linear = src->texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR; + int dst_linear = dst->texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR; + + assert(src->format == dst->format); + + /* Setup transfer to swizzle the texture to vram if needed */ + if (src_linear && !dst_linear && w > 1 && h > 1) { + nv04_surface_copy_swizzle(ctx, dst, dx, dy, src, sx, sy, w, h); + return; + } + + /* NV_CONTEXT_SURFACES_2D has buffer alignment restrictions, fallback + * to NV_MEMORY_TO_MEMORY_FORMAT in this case. + */ + if ((src->offset & 63) || (dst->offset & 63) || + (src_pitch & 63) || (dst_pitch & 63)) { + nv04_surface_copy_m2mf(ctx, dst, dx, dy, src, sx, sy, w, h); + return; + } + + nv04_surface_copy_blit(ctx, dst, dx, dy, src, sx, sy, w, h); +} + +static void +nv04_surface_fill(struct nv04_surface_2d *ctx, struct pipe_surface *dst, + int dx, int dy, int w, int h, unsigned value) +{ + struct nouveau_channel *chan = ctx->surf2d->channel; + struct nouveau_grobj *surf2d = ctx->surf2d; + struct nouveau_grobj *rect = ctx->rect; + struct nouveau_bo *dst_bo = nouveau_bo(ctx->buf(dst)); + unsigned dst_pitch = ((struct nv04_surface *)dst)->pitch; + int cs2d_format, gdirect_format; + + cs2d_format = nv04_surface_format(dst->format); + assert(cs2d_format >= 0); + + gdirect_format = nv04_rect_format(dst->format); + assert(gdirect_format >= 0); + + MARK_RING (chan, 16, 4); + BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2); + OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + OUT_RELOCo(chan, dst_bo, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + BEGIN_RING(chan, surf2d, NV04_CONTEXT_SURFACES_2D_FORMAT, 4); + OUT_RING (chan, cs2d_format); + OUT_RING (chan, (dst_pitch << 16) | dst_pitch); + OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + OUT_RELOCl(chan, dst_bo, dst->offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR); + + BEGIN_RING(chan, rect, NV04_GDI_RECTANGLE_TEXT_COLOR_FORMAT, 1); + OUT_RING (chan, gdirect_format); + BEGIN_RING(chan, rect, NV04_GDI_RECTANGLE_TEXT_COLOR1_A, 1); + OUT_RING (chan, value); + BEGIN_RING(chan, rect, + NV04_GDI_RECTANGLE_TEXT_UNCLIPPED_RECTANGLE_POINT(0), 2); + OUT_RING (chan, (dx << 16) | dy); + OUT_RING (chan, ( w << 16) | h); +} + +void +nv04_surface_2d_takedown(struct nv04_surface_2d **pctx) +{ + struct nv04_surface_2d *ctx; + + if (!pctx || !*pctx) + return; + ctx = *pctx; + *pctx = NULL; + + nouveau_notifier_free(&ctx->ntfy); + nouveau_grobj_free(&ctx->m2mf); + nouveau_grobj_free(&ctx->surf2d); + nouveau_grobj_free(&ctx->swzsurf); + nouveau_grobj_free(&ctx->rect); + nouveau_grobj_free(&ctx->blit); + nouveau_grobj_free(&ctx->sifm); + + FREE(ctx); +} + +struct nv04_surface_2d * +nv04_surface_2d_init(struct nouveau_screen *screen) +{ + struct nv04_surface_2d *ctx = CALLOC_STRUCT(nv04_surface_2d); + struct nouveau_channel *chan = screen->channel; + unsigned handle = 0x88000000, class; + int ret; + + if (!ctx) + return NULL; + + ret = nouveau_notifier_alloc(chan, handle++, 1, &ctx->ntfy); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + ret = nouveau_grobj_alloc(chan, handle++, 0x0039, &ctx->m2mf); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + BEGIN_RING(chan, ctx->m2mf, NV04_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY, 1); + OUT_RING (chan, ctx->ntfy->handle); + + if (chan->device->chipset < 0x10) + class = NV04_CONTEXT_SURFACES_2D; + else + class = NV10_CONTEXT_SURFACES_2D; + + ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->surf2d); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + BEGIN_RING(chan, ctx->surf2d, + NV04_CONTEXT_SURFACES_2D_DMA_IMAGE_SOURCE, 2); + OUT_RING (chan, chan->vram->handle); + OUT_RING (chan, chan->vram->handle); + + if (chan->device->chipset < 0x10) + class = NV04_IMAGE_BLIT; + else + class = NV12_IMAGE_BLIT; + + ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->blit); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + BEGIN_RING(chan, ctx->blit, NV01_IMAGE_BLIT_DMA_NOTIFY, 1); + OUT_RING (chan, ctx->ntfy->handle); + BEGIN_RING(chan, ctx->blit, NV04_IMAGE_BLIT_SURFACE, 1); + OUT_RING (chan, ctx->surf2d->handle); + BEGIN_RING(chan, ctx->blit, NV01_IMAGE_BLIT_OPERATION, 1); + OUT_RING (chan, NV01_IMAGE_BLIT_OPERATION_SRCCOPY); + + ret = nouveau_grobj_alloc(chan, handle++, NV04_GDI_RECTANGLE_TEXT, + &ctx->rect); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_DMA_NOTIFY, 1); + OUT_RING (chan, ctx->ntfy->handle); + BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_SURFACE, 1); + OUT_RING (chan, ctx->surf2d->handle); + BEGIN_RING(chan, ctx->rect, NV04_GDI_RECTANGLE_TEXT_OPERATION, 1); + OUT_RING (chan, NV04_GDI_RECTANGLE_TEXT_OPERATION_SRCCOPY); + BEGIN_RING(chan, ctx->rect, + NV04_GDI_RECTANGLE_TEXT_MONOCHROME_FORMAT, 1); + OUT_RING (chan, NV04_GDI_RECTANGLE_TEXT_MONOCHROME_FORMAT_LE); + + switch (chan->device->chipset & 0xf0) { + case 0x00: + case 0x10: + class = NV04_SWIZZLED_SURFACE; + break; + case 0x20: + class = NV20_SWIZZLED_SURFACE; + break; + case 0x30: + class = NV30_SWIZZLED_SURFACE; + break; + case 0x40: + case 0x60: + class = NV40_SWIZZLED_SURFACE; + break; + default: + /* Famous last words: this really can't happen.. */ + assert(0); + break; + } + + ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->swzsurf); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + switch (chan->device->chipset & 0xf0) { + case 0x10: + case 0x20: + class = NV10_SCALED_IMAGE_FROM_MEMORY; + break; + case 0x30: + class = NV30_SCALED_IMAGE_FROM_MEMORY; + break; + case 0x40: + case 0x60: + class = NV40_SCALED_IMAGE_FROM_MEMORY; + break; + default: + class = NV04_SCALED_IMAGE_FROM_MEMORY; + break; + } + + ret = nouveau_grobj_alloc(chan, handle++, class, &ctx->sifm); + if (ret) { + nv04_surface_2d_takedown(&ctx); + return NULL; + } + + ctx->copy = nv04_surface_copy; + ctx->fill = nv04_surface_fill; + return ctx; +} + +struct nv04_surface* +nv04_surface_wrap_for_render(struct pipe_screen *pscreen, struct nv04_surface_2d* eng2d, struct nv04_surface* ns) +{ + int temp_flags; + + // printf("creating temp, flags is %i!\n", flags); + + if(ns->base.usage & PIPE_BUFFER_USAGE_DISCARD) + { + temp_flags = ns->base.usage | PIPE_BUFFER_USAGE_GPU_READ; + ns->base.usage = PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER | PIPE_BUFFER_USAGE_DISCARD; + } + else + { + temp_flags = ns->base.usage | PIPE_BUFFER_USAGE_GPU_READ | PIPE_BUFFER_USAGE_GPU_WRITE; + ns->base.usage = PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER | PIPE_BUFFER_USAGE_GPU_READ; + } + + ns->base.usage = PIPE_BUFFER_USAGE_GPU_READ | PIPE_BUFFER_USAGE_GPU_WRITE; + + struct pipe_texture templ; + memset(&templ, 0, sizeof(templ)); + templ.format = ns->base.texture->format; + templ.target = PIPE_TEXTURE_2D; + templ.width0 = ns->base.width; + templ.height0 = ns->base.height; + templ.depth0 = 1; + templ.last_level = 0; + + // TODO: this is probably wrong and we should specifically handle multisampling somehow once it is implemented + templ.nr_samples = ns->base.texture->nr_samples; + + templ.tex_usage = ns->base.texture->tex_usage | PIPE_TEXTURE_USAGE_RENDER_TARGET; + + struct pipe_texture* temp_tex = pscreen->texture_create(pscreen, &templ); + struct nv04_surface* temp_ns = (struct nv04_surface*)pscreen->get_tex_surface(pscreen, temp_tex, 0, 0, 0, temp_flags); + temp_ns->backing = ns; + + if(ns->base.usage & PIPE_BUFFER_USAGE_GPU_READ) + eng2d->copy(eng2d, &temp_ns->backing->base, 0, 0, &ns->base, 0, 0, ns->base.width, ns->base.height); + + return temp_ns; +} -- cgit v1.2.3