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-rw-r--r--mesalib/src/gallium/auxiliary/util/u_blit.c3
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_blitter.c3
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_gen_mipmap.c3
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_texture.c11
-rw-r--r--mesalib/src/gallium/auxiliary/util/u_texture.h5
5 files changed, 19 insertions, 6 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_blit.c b/mesalib/src/gallium/auxiliary/util/u_blit.c
index 4ba71b929..595287d3b 100644
--- a/mesalib/src/gallium/auxiliary/util/u_blit.c
+++ b/mesalib/src/gallium/auxiliary/util/u_blit.c
@@ -272,7 +272,8 @@ setup_vertex_data_tex(struct blit_state *ctx,
const unsigned stride = sizeof ctx->vertices[0] / sizeof ctx->vertices[0][0][0];
util_map_texcoords2d_onto_cubemap(src_face,
&ctx->vertices[0][1][0], stride,
- &ctx->vertices[0][1][0], stride);
+ &ctx->vertices[0][1][0], stride,
+ TRUE);
}
offset = get_next_slot( ctx );
diff --git a/mesalib/src/gallium/auxiliary/util/u_blitter.c b/mesalib/src/gallium/auxiliary/util/u_blitter.c
index 096d3bc2b..b95cbab12 100644
--- a/mesalib/src/gallium/auxiliary/util/u_blitter.c
+++ b/mesalib/src/gallium/auxiliary/util/u_blitter.c
@@ -659,7 +659,8 @@ static void blitter_set_texcoords(struct blitter_context_priv *ctx,
util_map_texcoords2d_onto_cubemap(layer % 6,
/* pointer, stride in floats */
&face_coord[0][0], 2,
- &ctx->vertices[0][1][0], 8);
+ &ctx->vertices[0][1][0], 8,
+ TRUE);
} else {
set_texcoords_in_vertices(coord, &ctx->vertices[0][1][0], 8);
}
diff --git a/mesalib/src/gallium/auxiliary/util/u_gen_mipmap.c b/mesalib/src/gallium/auxiliary/util/u_gen_mipmap.c
index a885f2b0f..84bf30f08 100644
--- a/mesalib/src/gallium/auxiliary/util/u_gen_mipmap.c
+++ b/mesalib/src/gallium/auxiliary/util/u_gen_mipmap.c
@@ -1409,7 +1409,8 @@ set_vertex_data(struct gen_mipmap_state *ctx,
};
util_map_texcoords2d_onto_cubemap(layer, &st[0][0], 2,
- &ctx->vertices[0][1][0], 8);
+ &ctx->vertices[0][1][0], 8,
+ FALSE);
}
else if (tex_target == PIPE_TEXTURE_1D_ARRAY) {
/* 1D texture array */
diff --git a/mesalib/src/gallium/auxiliary/util/u_texture.c b/mesalib/src/gallium/auxiliary/util/u_texture.c
index d97e57a79..e865f8e73 100644
--- a/mesalib/src/gallium/auxiliary/util/u_texture.c
+++ b/mesalib/src/gallium/auxiliary/util/u_texture.c
@@ -42,7 +42,8 @@
void util_map_texcoords2d_onto_cubemap(unsigned face,
const float *in_st, unsigned in_stride,
- float *out_str, unsigned out_stride)
+ float *out_str, unsigned out_stride,
+ boolean allow_scale)
{
int i;
float rx, ry, rz;
@@ -52,8 +53,14 @@ void util_map_texcoords2d_onto_cubemap(unsigned face,
/* Compute sc = +/-scale and tc = +/-scale.
* Not +/-1 to avoid cube face selection ambiguity near the edges,
* though that can still sometimes happen with this scale factor...
+ *
+ * XXX: Yep, there is no safe scale factor that will prevent sampling
+ * the neighbouring face when stretching out. A more reliable solution
+ * would be to clamp (sc, tc) against +/- 1.0-1.0/mipsize, in the shader.
+ *
+ * Also, this is not necessary when minifying, or 1:1 blits.
*/
- const float scale = 0.9999f;
+ const float scale = allow_scale ? 0.9999f : 1.0f;
const float sc = (2 * in_st[0] - 1) * scale;
const float tc = (2 * in_st[1] - 1) * scale;
diff --git a/mesalib/src/gallium/auxiliary/util/u_texture.h b/mesalib/src/gallium/auxiliary/util/u_texture.h
index 93b2f1e4c..b1c8c7091 100644
--- a/mesalib/src/gallium/auxiliary/util/u_texture.h
+++ b/mesalib/src/gallium/auxiliary/util/u_texture.h
@@ -27,6 +27,8 @@
#ifndef U_TEXTURE_H
#define U_TEXTURE_H
+#include "pipe/p_compiler.h"
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -44,7 +46,8 @@ extern "C" {
*/
void util_map_texcoords2d_onto_cubemap(unsigned face,
const float *in_st, unsigned in_stride,
- float *out_str, unsigned out_stride);
+ float *out_str, unsigned out_stride,
+ boolean allow_scale);
#ifdef __cplusplus