From: Nicolai Hähnle Date: Sat, 12 Sep 2009 14:34:55 +0000 (+0200) Subject: r300g: There is no such thing as "texture stride" X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3cb30e55e48d86aa5f660e670e055d6b258ea54a;p=mesa.git r300g: There is no such thing as "texture stride" Individual texture images have a stride, but textures as a whole do not. There are still pieces of code which are confused about this, but the core of the confusion is hopefully gone. Signed-off-by: Nicolai Hähnle --- diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h index 6c5914baa35..52b1c9a6b26 100644 --- a/src/gallium/drivers/r300/r300_context.h +++ b/src/gallium/drivers/r300/r300_context.h @@ -184,8 +184,15 @@ struct r300_texture { /* Offsets into the buffer. */ unsigned offset[PIPE_MAX_TEXTURE_LEVELS]; - /* Stride (pitch?) of this texture in bytes */ - unsigned stride; + /** + * If non-zero, override the natural texture layout with + * a custom stride (in bytes). + * + * \note Mipmapping fails for textures with a non-natural layout! + * + * \sa r300_texture_get_stride + */ + unsigned stride_override; /* Total size of this texture, in bytes. */ unsigned size; diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c index 1bc35c24867..a1b36ba2ed1 100644 --- a/src/gallium/drivers/r300/r300_emit.c +++ b/src/gallium/drivers/r300/r300_emit.c @@ -283,7 +283,7 @@ void r300_emit_fb_state(struct r300_context* r300, for (i = 0; i < fb->nr_cbufs; i++) { tex = (struct r300_texture*)fb->cbufs[i]->texture; assert(tex && tex->buffer && "cbuf is marked, but NULL!"); - pixpitch = tex->stride / tex->tex.block.size; + pixpitch = r300_texture_get_stride(tex, 0) / tex->tex.block.size; OUT_CS_REG_SEQ(R300_RB3D_COLOROFFSET0 + (4 * i), 1); OUT_CS_RELOC(tex->buffer, 0, 0, RADEON_GEM_DOMAIN_VRAM, 0); @@ -300,7 +300,7 @@ void r300_emit_fb_state(struct r300_context* r300, if (fb->zsbuf) { tex = (struct r300_texture*)fb->zsbuf->texture; assert(tex && tex->buffer && "zsbuf is marked, but NULL!"); - pixpitch = tex->stride / tex->tex.block.size; + pixpitch = r300_texture_get_stride(tex, 0) / tex->tex.block.size; OUT_CS_REG_SEQ(R300_ZB_DEPTHOFFSET, 1); OUT_CS_RELOC(tex->buffer, 0, 0, RADEON_GEM_DOMAIN_VRAM, 0); diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c index 15740f61252..593178c50be 100644 --- a/src/gallium/drivers/r300/r300_screen.c +++ b/src/gallium/drivers/r300/r300_screen.c @@ -323,13 +323,14 @@ r300_get_tex_transfer(struct pipe_screen *screen, if (trans) { pipe_texture_reference(&trans->transfer.texture, texture); trans->transfer.format = texture->format; + trans->transfer.x = x; + trans->transfer.y = y; trans->transfer.width = w; trans->transfer.height = h; trans->transfer.block = texture->block; trans->transfer.nblocksx = texture->nblocksx[level]; trans->transfer.nblocksy = texture->nblocksy[level]; - trans->transfer.stride = align(pf_get_stride(&trans->transfer.block, - texture->width[level]), 32); + trans->transfer.stride = r300_texture_get_stride(tex, level); trans->transfer.usage = usage; trans->offset = offset; } @@ -356,7 +357,7 @@ static void* r300_transfer_map(struct pipe_screen* screen, if (transfer->usage != PIPE_TRANSFER_READ) { flags |= PIPE_BUFFER_USAGE_CPU_WRITE; } - + map = pipe_buffer_map(screen, tex->buffer, flags); if (!map) { diff --git a/src/gallium/drivers/r300/r300_surface.c b/src/gallium/drivers/r300/r300_surface.c index 96e6e4a77d4..cc6288cb519 100644 --- a/src/gallium/drivers/r300/r300_surface.c +++ b/src/gallium/drivers/r300/r300_surface.c @@ -29,7 +29,7 @@ static void r300_surface_setup(struct r300_context* r300, unsigned w, unsigned h) { struct r300_capabilities* caps = r300_screen(r300->context.screen)->caps; - unsigned pixpitch = dest->stride / dest->tex.block.size; + unsigned pixpitch = r300_texture_get_stride(dest, 0) / dest->tex.block.size; CS_LOCALS(r300); r300_emit_blend_state(r300, &blend_clear_state); @@ -100,7 +100,7 @@ static void r300_surface_fill(struct pipe_context* pipe, struct r300_context* r300 = r300_context(pipe); struct r300_capabilities* caps = r300_screen(pipe->screen)->caps; struct r300_texture* tex = (struct r300_texture*)dest->texture; - unsigned pixpitch = tex->stride / tex->tex.block.size; + unsigned pixpitch = r300_texture_get_stride(tex, 0) / tex->tex.block.size; boolean invalid = FALSE; CS_LOCALS(r300); @@ -233,7 +233,7 @@ static void r300_surface_copy(struct pipe_context* pipe, struct r300_capabilities* caps = r300_screen(pipe->screen)->caps; struct r300_texture* srctex = (struct r300_texture*)src->texture; struct r300_texture* desttex = (struct r300_texture*)dest->texture; - unsigned pixpitch = srctex->stride / srctex->tex.block.size; + unsigned pixpitch = r300_texture_get_stride(srctex, 0) / srctex->tex.block.size; boolean invalid = FALSE; float fsrcx = srcx, fsrcy = srcy, fdestx = destx, fdesty = desty; CS_LOCALS(r300); diff --git a/src/gallium/drivers/r300/r300_texture.c b/src/gallium/drivers/r300/r300_texture.c index 590052509cc..6e8c3683200 100644 --- a/src/gallium/drivers/r300/r300_texture.c +++ b/src/gallium/drivers/r300/r300_texture.c @@ -25,7 +25,6 @@ static void r300_setup_texture_state(struct r300_texture* tex, unsigned width, unsigned height, - unsigned pitch, unsigned levels) { struct r300_texture_state* state = &tex->state; @@ -38,7 +37,7 @@ static void r300_setup_texture_state(struct r300_texture* tex, /* XXX */ state->format1 = r300_translate_texformat(tex->tex.format); - state->format2 = pitch - 1; + state->format2 = r300_texture_get_stride(tex, 0); /* Assume (somewhat foolishly) that oversized textures will * not be permitted by the state tracker. */ @@ -50,13 +49,30 @@ static void r300_setup_texture_state(struct r300_texture* tex, } debug_printf("r300: Set texture state (%dx%d, pitch %d, %d levels)\n", - width, height, pitch, levels); + width, height, levels); +} + +/** + * Return the stride, in bytes, of the texture images of the given texture + * at the given level. + */ +unsigned r300_texture_get_stride(struct r300_texture* tex, unsigned level) +{ + if (tex->stride_override) + return tex->stride_override; + + if (level > tex->tex.last_level) { + debug_printf("%s: level (%u) > last_level (%u)\n", level, tex->tex.last_level); + return 0; + } + + return align(pf_get_stride(&tex->tex.block, tex->tex.width[level]), 32); } static void r300_setup_miptree(struct r300_texture* tex) { struct pipe_texture* base = &tex->tex; - int stride, size, offset; + int stride, size; int i; for (i = 0; i <= base->last_level; i++) { @@ -74,7 +90,7 @@ static void r300_setup_miptree(struct r300_texture* tex) * XXX * POT, uncompressed, unmippmapped textures can be aligned to 32, * instead of 64. */ - stride = align(pf_get_stride(&base->block, base->width[i]), 32); + stride = r300_texture_get_stride(tex, i); size = stride * base->nblocksy[i] * base->depth[i]; tex->offset[i] = align(tex->size, 32); @@ -84,10 +100,6 @@ static void r300_setup_miptree(struct r300_texture* tex) "(%dx%dx%d px, pitch %d bytes)\n", i, base->width[i], base->height[i], base->depth[i], stride); - /* Save stride of first level to the texture. */ - if (i == 0) { - tex->stride = stride; - } } } @@ -109,7 +121,7 @@ static struct pipe_texture* r300_setup_miptree(tex); r300_setup_texture_state(tex, template->width[0], template->height[0], - template->width[0], template->last_level); + template->last_level); tex->buffer = screen->buffer_create(screen, 1024, PIPE_BUFFER_USAGE_PIXEL, @@ -189,11 +201,10 @@ static struct pipe_texture* pipe_reference_init(&tex->tex.reference, 1); tex->tex.screen = screen; - tex->stride = *stride; + tex->stride_override = *stride; /* XXX */ - r300_setup_texture_state(tex, tex->tex.width[0], tex->tex.height[0], - tex->stride, 0); + r300_setup_texture_state(tex, tex->tex.width[0], tex->tex.height[0], 0); pipe_buffer_reference(&tex->buffer, buffer); @@ -221,7 +232,7 @@ boolean r300_get_texture_buffer(struct pipe_texture* texture, pipe_buffer_reference(buffer, tex->buffer); if (stride) { - *stride = tex->stride; + *stride = r300_texture_get_stride(tex, 0); } return TRUE; diff --git a/src/gallium/drivers/r300/r300_texture.h b/src/gallium/drivers/r300/r300_texture.h index 3b56f0307c0..3109af5baca 100644 --- a/src/gallium/drivers/r300/r300_texture.h +++ b/src/gallium/drivers/r300/r300_texture.h @@ -30,8 +30,12 @@ #include "r300_context.h" #include "r300_reg.h" +struct r300_texture; + void r300_init_screen_texture_functions(struct pipe_screen* screen); +unsigned r300_texture_get_stride(struct r300_texture* tex, unsigned level); + /* Note the signature of R300_EASY_TX_FORMAT(A, R, G, B, FORMAT)... */ static INLINE uint32_t r300_translate_texformat(enum pipe_format format) {