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-rw-r--r--src/gallium/auxiliary/util/u_gen_mipmap.c403
1 files changed, 218 insertions, 185 deletions
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c
index 6a931a9581..d4716bffe4 100644
--- a/src/gallium/auxiliary/util/u_gen_mipmap.c
+++ b/src/gallium/auxiliary/util/u_gen_mipmap.c
@@ -48,6 +48,8 @@
#include "util/u_simple_shaders.h"
#include "util/u_math.h"
#include "util/u_texture.h"
+#include "util/u_half.h"
+#include "util/u_surface.h"
#include "cso_cache/cso_context.h"
@@ -65,7 +67,7 @@ struct gen_mipmap_state
struct pipe_vertex_element velem[2];
void *vs;
- void *fs2d, *fsCube;
+ void *fs1d, *fs2d, *fs3d, *fsCube;
struct pipe_resource *vbuf; /**< quad vertices */
unsigned vbuf_slot;
@@ -89,24 +91,7 @@ enum dtype
};
-typedef ushort half_float;
-
-
-static half_float
-float_to_half(float f)
-{
- /* XXX fix this */
- return 0;
-}
-
-static float
-half_to_float(half_float h)
-{
- /* XXX fix this */
- return 0.0f;
-}
-
-
+typedef uint16_t half_float;
/**
@@ -145,7 +130,7 @@ half_to_float(half_float h)
rowC[j][e], rowC[k][e], \
rowD[j][e], rowD[k][e]); \
} while(0)
-
+
#define FILTER_F_3D(e) \
do { \
dst[i][e] = (rowA[j][e] + rowA[k][e] \
@@ -156,15 +141,15 @@ half_to_float(half_float h)
#define FILTER_HF_3D(e) \
do { \
- const float aj = half_to_float(rowA[j][e]); \
- const float ak = half_to_float(rowA[k][e]); \
- const float bj = half_to_float(rowB[j][e]); \
- const float bk = half_to_float(rowB[k][e]); \
- const float cj = half_to_float(rowC[j][e]); \
- const float ck = half_to_float(rowC[k][e]); \
- const float dj = half_to_float(rowD[j][e]); \
- const float dk = half_to_float(rowD[k][e]); \
- dst[i][e] = float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \
+ const float aj = util_half_to_float(rowA[j][e]); \
+ const float ak = util_half_to_float(rowA[k][e]); \
+ const float bj = util_half_to_float(rowB[j][e]); \
+ const float bk = util_half_to_float(rowB[k][e]); \
+ const float cj = util_half_to_float(rowC[j][e]); \
+ const float ck = util_half_to_float(rowC[k][e]); \
+ const float dj = util_half_to_float(rowD[j][e]); \
+ const float dk = util_half_to_float(rowD[k][e]); \
+ dst[i][e] = util_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \
* 0.125F); \
} while(0)
/*@}*/
@@ -343,8 +328,7 @@ do_row(enum dtype datatype, uint comps, int srcWidth,
}
}
-#if 0
- else if (datatype == HALF_DTYPE_FLOAT && comps == 4) {
+ else if (datatype == DTYPE_HALF_FLOAT && comps == 4) {
uint i, j, k, comp;
const half_float(*rowA)[4] = (const half_float(*)[4]) srcRowA;
const half_float(*rowB)[4] = (const half_float(*)[4]) srcRowB;
@@ -353,11 +337,11 @@ do_row(enum dtype datatype, uint comps, int srcWidth,
i++, j += colStride, k += colStride) {
for (comp = 0; comp < 4; comp++) {
float aj, ak, bj, bk;
- aj = half_to_float(rowA[j][comp]);
- ak = half_to_float(rowA[k][comp]);
- bj = half_to_float(rowB[j][comp]);
- bk = half_to_float(rowB[k][comp]);
- dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F);
+ aj = util_half_to_float(rowA[j][comp]);
+ ak = util_half_to_float(rowA[k][comp]);
+ bj = util_half_to_float(rowB[j][comp]);
+ bk = util_half_to_float(rowB[k][comp]);
+ dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
}
@@ -370,11 +354,11 @@ do_row(enum dtype datatype, uint comps, int srcWidth,
i++, j += colStride, k += colStride) {
for (comp = 0; comp < 3; comp++) {
float aj, ak, bj, bk;
- aj = half_to_float(rowA[j][comp]);
- ak = half_to_float(rowA[k][comp]);
- bj = half_to_float(rowB[j][comp]);
- bk = half_to_float(rowB[k][comp]);
- dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F);
+ aj = util_half_to_float(rowA[j][comp]);
+ ak = util_half_to_float(rowA[k][comp]);
+ bj = util_half_to_float(rowB[j][comp]);
+ bk = util_half_to_float(rowB[k][comp]);
+ dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
}
@@ -387,11 +371,11 @@ do_row(enum dtype datatype, uint comps, int srcWidth,
i++, j += colStride, k += colStride) {
for (comp = 0; comp < 2; comp++) {
float aj, ak, bj, bk;
- aj = half_to_float(rowA[j][comp]);
- ak = half_to_float(rowA[k][comp]);
- bj = half_to_float(rowB[j][comp]);
- bk = half_to_float(rowB[k][comp]);
- dst[i][comp] = float_to_half((aj + ak + bj + bk) * 0.25F);
+ aj = util_half_to_float(rowA[j][comp]);
+ ak = util_half_to_float(rowA[k][comp]);
+ bj = util_half_to_float(rowB[j][comp]);
+ bk = util_half_to_float(rowB[k][comp]);
+ dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
}
@@ -403,14 +387,13 @@ do_row(enum dtype datatype, uint comps, int srcWidth,
for (i = j = 0, k = k0; i < (uint) dstWidth;
i++, j += colStride, k += colStride) {
float aj, ak, bj, bk;
- aj = half_to_float(rowA[j]);
- ak = half_to_float(rowA[k]);
- bj = half_to_float(rowB[j]);
- bk = half_to_float(rowB[k]);
- dst[i] = float_to_half((aj + ak + bj + bk) * 0.25F);
+ aj = util_half_to_float(rowA[j]);
+ ak = util_half_to_float(rowA[k]);
+ bj = util_half_to_float(rowB[j]);
+ bk = util_half_to_float(rowB[k]);
+ dst[i] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
}
}
-#endif
else if (datatype == DTYPE_UINT && comps == 1) {
uint i, j, k;
@@ -1036,32 +1019,34 @@ reduce_2d(enum pipe_format pformat,
static void
reduce_3d(enum pipe_format pformat,
int srcWidth, int srcHeight, int srcDepth,
- int srcRowStride, const ubyte *srcPtr,
+ int srcRowStride, int srcImageStride, const ubyte *srcPtr,
int dstWidth, int dstHeight, int dstDepth,
- int dstRowStride, ubyte *dstPtr)
+ int dstRowStride, int dstImageStride, ubyte *dstPtr)
{
const int bpt = util_format_get_blocksize(pformat);
- const int border = 0;
int img, row;
- int bytesPerSrcImage, bytesPerDstImage;
- int bytesPerSrcRow, bytesPerDstRow;
int srcImageOffset, srcRowOffset;
enum dtype datatype;
uint comps;
format_to_type_comps(pformat, &datatype, &comps);
- bytesPerSrcImage = srcWidth * srcHeight * bpt;
- bytesPerDstImage = dstWidth * dstHeight * bpt;
+ /* XXX I think we should rather assert those strides */
+ if (!srcImageStride)
+ srcImageStride = srcWidth * srcHeight * bpt;
+ if (!dstImageStride)
+ dstImageStride = dstWidth * dstHeight * bpt;
- bytesPerSrcRow = srcWidth * bpt;
- bytesPerDstRow = dstWidth * bpt;
+ if (!srcRowStride)
+ srcRowStride = srcWidth * bpt;
+ if (!dstRowStride)
+ dstRowStride = dstWidth * bpt;
/* Offset between adjacent src images to be averaged together */
- srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage;
+ srcImageOffset = (srcDepth == dstDepth) ? 0 : srcImageStride;
/* Offset between adjacent src rows to be averaged together */
- srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt;
+ srcRowOffset = (srcHeight == dstHeight) ? 0 : srcRowStride;
/*
* Need to average together up to 8 src pixels for each dest pixel.
@@ -1077,16 +1062,14 @@ reduce_3d(enum pipe_format pformat,
*/
for (img = 0; img < dstDepth; img++) {
- /* first source image pointer, skipping border */
+ /* first source image pointer */
const ubyte *imgSrcA = srcPtr
- + (bytesPerSrcImage + bytesPerSrcRow + border) * bpt * border
- + img * (bytesPerSrcImage + srcImageOffset);
- /* second source image pointer, skipping border */
+ + img * (srcImageStride + srcImageOffset);
+ /* second source image pointer */
const ubyte *imgSrcB = imgSrcA + srcImageOffset;
- /* address of the dest image, skipping border */
+ /* address of the dest image */
ubyte *imgDst = dstPtr
- + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border
- + img * bytesPerDstImage;
+ + img * dstImageStride;
/* setup the four source row pointers and the dest row pointer */
const ubyte *srcImgARowA = imgSrcA;
@@ -1102,11 +1085,11 @@ reduce_3d(enum pipe_format pformat,
dstWidth, dstImgRow);
/* advance to next rows */
- srcImgARowA += bytesPerSrcRow + srcRowOffset;
- srcImgARowB += bytesPerSrcRow + srcRowOffset;
- srcImgBRowA += bytesPerSrcRow + srcRowOffset;
- srcImgBRowB += bytesPerSrcRow + srcRowOffset;
- dstImgRow += bytesPerDstRow;
+ srcImgARowA += srcRowStride + srcRowOffset;
+ srcImgARowB += srcRowStride + srcRowOffset;
+ srcImgBRowA += srcRowStride + srcRowOffset;
+ srcImgBRowB += srcRowStride + srcRowOffset;
+ dstImgRow += dstImageStride;
}
}
}
@@ -1117,25 +1100,24 @@ reduce_3d(enum pipe_format pformat,
static void
make_1d_mipmap(struct gen_mipmap_state *ctx,
struct pipe_resource *pt,
- uint face, uint baseLevel, uint lastLevel)
+ uint layer, uint baseLevel, uint lastLevel)
{
struct pipe_context *pipe = ctx->pipe;
- const uint zslice = 0;
uint dstLevel;
for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
const uint srcLevel = dstLevel - 1;
struct pipe_transfer *srcTrans, *dstTrans;
void *srcMap, *dstMap;
-
- srcTrans = pipe_get_transfer(pipe, pt, face, srcLevel, zslice,
- PIPE_TRANSFER_READ, 0, 0,
- u_minify(pt->width0, srcLevel),
- u_minify(pt->height0, srcLevel));
- dstTrans = pipe_get_transfer(pipe, pt, face, dstLevel, zslice,
- PIPE_TRANSFER_WRITE, 0, 0,
- u_minify(pt->width0, dstLevel),
- u_minify(pt->height0, dstLevel));
+
+ srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer,
+ PIPE_TRANSFER_READ, 0, 0,
+ u_minify(pt->width0, srcLevel),
+ u_minify(pt->height0, srcLevel));
+ dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer,
+ PIPE_TRANSFER_WRITE, 0, 0,
+ u_minify(pt->width0, dstLevel),
+ u_minify(pt->height0, dstLevel));
srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
@@ -1156,12 +1138,11 @@ make_1d_mipmap(struct gen_mipmap_state *ctx,
static void
make_2d_mipmap(struct gen_mipmap_state *ctx,
struct pipe_resource *pt,
- uint face, uint baseLevel, uint lastLevel)
+ uint layer, uint baseLevel, uint lastLevel)
{
struct pipe_context *pipe = ctx->pipe;
- const uint zslice = 0;
uint dstLevel;
-
+
assert(util_format_get_blockwidth(pt->format) == 1);
assert(util_format_get_blockheight(pt->format) == 1);
@@ -1169,15 +1150,15 @@ make_2d_mipmap(struct gen_mipmap_state *ctx,
const uint srcLevel = dstLevel - 1;
struct pipe_transfer *srcTrans, *dstTrans;
ubyte *srcMap, *dstMap;
-
- srcTrans = pipe_get_transfer(pipe, pt, face, srcLevel, zslice,
- PIPE_TRANSFER_READ, 0, 0,
- u_minify(pt->width0, srcLevel),
- u_minify(pt->height0, srcLevel));
- dstTrans = pipe_get_transfer(pipe, pt, face, dstLevel, zslice,
- PIPE_TRANSFER_WRITE, 0, 0,
- u_minify(pt->width0, dstLevel),
- u_minify(pt->height0, dstLevel));
+
+ srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer,
+ PIPE_TRANSFER_READ, 0, 0,
+ u_minify(pt->width0, srcLevel),
+ u_minify(pt->height0, srcLevel));
+ dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer,
+ PIPE_TRANSFER_WRITE, 0, 0,
+ u_minify(pt->width0, dstLevel),
+ u_minify(pt->height0, dstLevel));
srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
@@ -1197,41 +1178,49 @@ make_2d_mipmap(struct gen_mipmap_state *ctx,
}
+/* XXX looks a bit more like it could work now but need to test */
static void
make_3d_mipmap(struct gen_mipmap_state *ctx,
struct pipe_resource *pt,
uint face, uint baseLevel, uint lastLevel)
{
-#if 0
struct pipe_context *pipe = ctx->pipe;
- struct pipe_screen *screen = pipe->screen;
- uint dstLevel, zslice = 0;
+ uint dstLevel;
+ struct pipe_box src_box, dst_box;
assert(util_format_get_blockwidth(pt->format) == 1);
assert(util_format_get_blockheight(pt->format) == 1);
+ src_box.x = src_box.y = src_box.z = 0;
+ dst_box.x = dst_box.y = dst_box.z = 0;
+
for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
const uint srcLevel = dstLevel - 1;
struct pipe_transfer *srcTrans, *dstTrans;
ubyte *srcMap, *dstMap;
-
- srcTrans = pipe->get_transfer(pipe, pt, face, srcLevel, zslice,
- PIPE_TRANSFER_READ, 0, 0,
- u_minify(pt->width0, srcLevel),
- u_minify(pt->height0, srcLevel));
- dstTrans = pipe->get_transfer(pipe, pt, face, dstLevel, zslice,
- PIPE_TRANSFER_WRITE, 0, 0,
- u_minify(pt->width0, dstLevel),
- u_minify(pt->height0, dstLevel));
+ struct pipe_box src_box, dst_box;
+ src_box.width = u_minify(pt->width0, srcLevel);
+ src_box.height = u_minify(pt->height0, srcLevel);
+ src_box.depth = u_minify(pt->depth0, srcLevel);
+ dst_box.width = u_minify(pt->width0, dstLevel);
+ dst_box.height = u_minify(pt->height0, dstLevel);
+ dst_box.depth = u_minify(pt->depth0, dstLevel);
+
+ srcTrans = pipe->get_transfer(pipe, pt, srcLevel,
+ PIPE_TRANSFER_READ,
+ &src_box);
+ dstTrans = pipe->get_transfer(pipe, pt, dstLevel,
+ PIPE_TRANSFER_WRITE,
+ &dst_box);
srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
reduce_3d(pt->format,
- srcTrans->width, srcTrans->height,
- srcTrans->stride, srcMap,
- dstTrans->width, dstTrans->height,
- dstTrans->stride, dstMap);
+ srcTrans->box.width, srcTrans->box.height, srcTrans->box.depth,
+ srcTrans->stride, srcTrans->layer_stride, srcMap,
+ dstTrans->box.width, dstTrans->box.height, dstTrans->box.depth,
+ dstTrans->stride, dstTrans->layer_stride, dstMap);
pipe->transfer_unmap(pipe, srcTrans);
pipe->transfer_unmap(pipe, dstTrans);
@@ -1239,28 +1228,25 @@ make_3d_mipmap(struct gen_mipmap_state *ctx,
pipe->transfer_destroy(pipe, srcTrans);
pipe->transfer_destroy(pipe, dstTrans);
}
-#else
- (void) reduce_3d;
-#endif
}
static void
fallback_gen_mipmap(struct gen_mipmap_state *ctx,
struct pipe_resource *pt,
- uint face, uint baseLevel, uint lastLevel)
+ uint layer, uint baseLevel, uint lastLevel)
{
switch (pt->target) {
case PIPE_TEXTURE_1D:
- make_1d_mipmap(ctx, pt, face, baseLevel, lastLevel);
+ make_1d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
break;
case PIPE_TEXTURE_2D:
case PIPE_TEXTURE_RECT:
case PIPE_TEXTURE_CUBE:
- make_2d_mipmap(ctx, pt, face, baseLevel, lastLevel);
+ make_2d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
break;
case PIPE_TEXTURE_3D:
- make_3d_mipmap(ctx, pt, face, baseLevel, lastLevel);
+ make_3d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
break;
default:
assert(0);
@@ -1328,8 +1314,12 @@ util_create_gen_mipmap(struct pipe_context *pipe,
}
/* fragment shader */
+ ctx->fs1d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_1D,
+ TGSI_INTERPOLATE_LINEAR);
ctx->fs2d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D,
TGSI_INTERPOLATE_LINEAR);
+ ctx->fs3d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_3D,
+ TGSI_INTERPOLATE_LINEAR);
ctx->fsCube = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_CUBE,
TGSI_INTERPOLATE_LINEAR);
@@ -1371,7 +1361,7 @@ get_next_slot(struct gen_mipmap_state *ctx)
static unsigned
set_vertex_data(struct gen_mipmap_state *ctx,
enum pipe_texture_target tex_target,
- uint face)
+ uint layer, float r)
{
unsigned offset;
@@ -1397,26 +1387,26 @@ set_vertex_data(struct gen_mipmap_state *ctx,
{0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f}
};
- util_map_texcoords2d_onto_cubemap(face, &st[0][0], 2,
+ util_map_texcoords2d_onto_cubemap(layer, &st[0][0], 2,
&ctx->vertices[0][1][0], 8);
}
else {
- /* 1D/2D */
+ /* 1D/2D/3D */
ctx->vertices[0][1][0] = 0.0f; /*s*/
ctx->vertices[0][1][1] = 0.0f; /*t*/
- ctx->vertices[0][1][2] = 0.0f; /*r*/
+ ctx->vertices[0][1][2] = r; /*r*/
ctx->vertices[1][1][0] = 1.0f;
ctx->vertices[1][1][1] = 0.0f;
- ctx->vertices[1][1][2] = 0.0f;
+ ctx->vertices[1][1][2] = r;
ctx->vertices[2][1][0] = 1.0f;
ctx->vertices[2][1][1] = 1.0f;
- ctx->vertices[2][1][2] = 0.0f;
+ ctx->vertices[2][1][2] = r;
ctx->vertices[3][1][0] = 0.0f;
ctx->vertices[3][1][1] = 1.0f;
- ctx->vertices[3][1][2] = 0.0f;
+ ctx->vertices[3][1][2] = r;
}
offset = get_next_slot( ctx );
@@ -1478,9 +1468,8 @@ util_gen_mipmap(struct gen_mipmap_state *ctx,
struct pipe_screen *screen = pipe->screen;
struct pipe_framebuffer_state fb;
struct pipe_resource *pt = psv->texture;
- void *fs = (pt->target == PIPE_TEXTURE_CUBE) ? ctx->fsCube : ctx->fs2d;
+ void *fs;
uint dstLevel;
- uint zslice = 0;
uint offset;
/* The texture object should have room for the levels which we're
@@ -1494,8 +1483,28 @@ util_gen_mipmap(struct gen_mipmap_state *ctx,
assert(filter == PIPE_TEX_FILTER_LINEAR ||
filter == PIPE_TEX_FILTER_NEAREST);
+ switch (pt->target) {
+ case PIPE_TEXTURE_1D:
+ fs = ctx->fs1d;
+ break;
+ case PIPE_TEXTURE_2D:
+ fs = ctx->fs2d;
+ break;
+ case PIPE_TEXTURE_3D:
+ fs = ctx->fs3d;
+ break;
+ case PIPE_TEXTURE_CUBE:
+ fs = ctx->fsCube;
+ break;
+ case PIPE_TEXTURE_1D_ARRAY:
+ case PIPE_TEXTURE_2D_ARRAY:
+ default:
+ assert(0);
+ fs = ctx->fs2d;
+ }
+
/* check if we can render in the texture's format */
- if (!screen->is_format_supported(screen, psv->format, PIPE_TEXTURE_2D,
+ if (!screen->is_format_supported(screen, psv->format, pt->target,
pt->nr_samples, PIPE_BIND_RENDER_TARGET, 0)) {
fallback_gen_mipmap(ctx, pt, face, baseLevel, lastLevel);
return;
@@ -1539,60 +1548,84 @@ util_gen_mipmap(struct gen_mipmap_state *ctx,
for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
const uint srcLevel = dstLevel - 1;
struct pipe_viewport_state vp;
-
- struct pipe_surface *surf =
- screen->get_tex_surface(screen, pt, face, dstLevel, zslice,
- PIPE_BIND_RENDER_TARGET);
-
- /*
- * Setup framebuffer / dest surface
- */
- fb.cbufs[0] = surf;
- fb.width = u_minify(pt->width0, dstLevel);
- fb.height = u_minify(pt->height0, dstLevel);
- cso_set_framebuffer(ctx->cso, &fb);
-
- /* viewport */
- vp.scale[0] = 0.5f * fb.width;
- vp.scale[1] = 0.5f * fb.height;
- vp.scale[2] = 1.0f;
- vp.scale[3] = 1.0f;
- vp.translate[0] = 0.5f * fb.width;
- vp.translate[1] = 0.5f * fb.height;
- vp.translate[2] = 0.0f;
- vp.translate[3] = 0.0f;
- cso_set_viewport(ctx->cso, &vp);
-
- /*
- * Setup sampler state
- * Note: we should only have to set the min/max LOD clamps to ensure
- * we grab texels from the right mipmap level. But some hardware
- * has trouble with min clamping so we also set the lod_bias to
- * try to work around that.
- */
- ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel;
- ctx->sampler.lod_bias = (float) srcLevel;
- cso_single_sampler(ctx->cso, 0, &ctx->sampler);
- cso_single_sampler_done(ctx->cso);
-
- cso_set_fragment_sampler_views(ctx->cso, 1, &psv);
-
- /* quad coords in clip coords */
- offset = set_vertex_data(ctx,
- pt->target,
- face);
-
- util_draw_vertex_buffer(ctx->pipe,
- ctx->vbuf,
- offset,
- PIPE_PRIM_TRIANGLE_FAN,
- 4, /* verts */
- 2); /* attribs/vert */
-
- pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
-
- /* need to signal that the texture has changed _after_ rendering to it */
- pipe_surface_reference( &surf, NULL );
+ unsigned nr_layers, layer, i;
+ float rcoord = 0.0f;
+
+ if (pt->target == PIPE_TEXTURE_3D)
+ nr_layers = u_minify(pt->depth0, dstLevel);
+ else nr_layers = 1;
+
+ for (i = 0; i < nr_layers; i++) {
+ struct pipe_surface *surf, surf_templ;
+ if (pt->target == PIPE_TEXTURE_3D) {
+ /* in theory with geom shaders and driver with full layer support
+ could do that in one go. */
+ layer = i;
+ offset = 1.0f / (float)(nr_layers * 2);
+ /* XXX hmm really? */
+ rcoord = (float)layer / (float)nr_layers + 1.0f / (float)(nr_layers * 2);
+ }
+ else
+ layer = face;
+
+ memset(&surf_templ, 0, sizeof(surf_templ));
+ u_surface_default_template(&surf_templ, pt, PIPE_BIND_RENDER_TARGET);
+ surf_templ.u.tex.level = dstLevel;
+ surf_templ.u.tex.first_layer = layer;
+ surf_templ.u.tex.last_layer = layer;
+ surf = pipe->create_surface(pipe, pt, &surf_templ);
+
+ /*
+ * Setup framebuffer / dest surface
+ */
+ fb.cbufs[0] = surf;
+ fb.width = u_minify(pt->width0, dstLevel);
+ fb.height = u_minify(pt->height0, dstLevel);
+ cso_set_framebuffer(ctx->cso, &fb);
+
+ /* viewport */
+ vp.scale[0] = 0.5f * fb.width;
+ vp.scale[1] = 0.5f * fb.height;
+ vp.scale[2] = 1.0f;
+ vp.scale[3] = 1.0f;
+ vp.translate[0] = 0.5f * fb.width;
+ vp.translate[1] = 0.5f * fb.height;
+ vp.translate[2] = 0.0f;
+ vp.translate[3] = 0.0f;
+ cso_set_viewport(ctx->cso, &vp);
+
+ /*
+ * Setup sampler state
+ * Note: we should only have to set the min/max LOD clamps to ensure
+ * we grab texels from the right mipmap level. But some hardware
+ * has trouble with min clamping so we also set the lod_bias to
+ * try to work around that.
+ */
+ ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel;
+ ctx->sampler.lod_bias = (float) srcLevel;
+ cso_single_sampler(ctx->cso, 0, &ctx->sampler);
+ cso_single_sampler_done(ctx->cso);
+
+ cso_set_fragment_sampler_views(ctx->cso, 1, &psv);
+
+ /* quad coords in clip coords */
+ offset = set_vertex_data(ctx,
+ pt->target,
+ face,
+ rcoord);
+
+ util_draw_vertex_buffer(ctx->pipe,
+ ctx->vbuf,
+ offset,
+ PIPE_PRIM_TRIANGLE_FAN,
+ 4, /* verts */
+ 2); /* attribs/vert */
+
+ pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+ /* need to signal that the texture has changed _after_ rendering to it */
+ pipe_surface_reference( &surf, NULL );
+ }
}
/* restore state we changed */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-03 19:54:46 +0000