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authorJakob Bornecrantz <jakob@tungstengraphics.com>2008-06-24 16:06:59 +0200
committerJakob Bornecrantz <jakob@tungstengraphics.com>2008-06-24 16:14:46 +0200
commit62fd280c524b282f2448995a353d94f973d904d4 (patch)
treed216911cb9ce45080c6b477e7e2801f23dc86e9d /src
parentfd6676c249338622da96a435058679d971ba59e5 (diff)
gallium: Fix whole source being used in u_blit
Diffstat (limited to 'src')
-rw-r--r--src/gallium/auxiliary/util/u_blit.c70
1 files changed, 54 insertions, 16 deletions
diff --git a/src/gallium/auxiliary/util/u_blit.c b/src/gallium/auxiliary/util/u_blit.c
index 28513f54e6..6555dcd588 100644
--- a/src/gallium/auxiliary/util/u_blit.c
+++ b/src/gallium/auxiliary/util/u_blit.c
@@ -223,6 +223,49 @@ setup_vertex_data(struct blit_state *ctx,
/**
+ * Setup vertex data for the textured quad we'll draw.
+ * Note: y=0=top
+ */
+static void
+setup_vertex_data_tex(struct blit_state *ctx,
+ float x0, float y0, float x1, float y1,
+ float s0, float t0, float s1, float t1,
+ float z)
+{
+ void *buf;
+
+ ctx->vertices[0][0][0] = x0;
+ ctx->vertices[0][0][1] = y0;
+ ctx->vertices[0][0][2] = z;
+ ctx->vertices[0][1][0] = s0; /*s*/
+ ctx->vertices[0][1][1] = t0; /*t*/
+
+ ctx->vertices[1][0][0] = x1;
+ ctx->vertices[1][0][1] = y0;
+ ctx->vertices[1][0][2] = z;
+ ctx->vertices[1][1][0] = s1; /*s*/
+ ctx->vertices[1][1][1] = t0; /*t*/
+
+ ctx->vertices[2][0][0] = x1;
+ ctx->vertices[2][0][1] = y1;
+ ctx->vertices[2][0][2] = z;
+ ctx->vertices[2][1][0] = s1;
+ ctx->vertices[2][1][1] = t1;
+
+ ctx->vertices[3][0][0] = x0;
+ ctx->vertices[3][0][1] = y1;
+ ctx->vertices[3][0][2] = z;
+ ctx->vertices[3][1][0] = s0;
+ ctx->vertices[3][1][1] = t1;
+
+ buf = ctx->pipe->winsys->buffer_map(ctx->pipe->winsys, ctx->vbuf,
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ memcpy(buf, ctx->vertices, sizeof(ctx->vertices));
+
+ ctx->pipe->winsys->buffer_unmap(ctx->pipe->winsys, ctx->vbuf);
+}
+/**
* Copy pixel block from src surface to dst surface.
* Overlapping regions are acceptable.
* XXX need some control over blitting Z and/or stencil.
@@ -382,25 +425,18 @@ util_blit_pixels_tex(struct blit_state *ctx,
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
struct pipe_framebuffer_state fb;
- const int srcLeft = MIN2(srcX0, srcX1);
- const int srcTop = MIN2(srcY0, srcY1);
+ float s0, t0, s1, t1;
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
- if (srcLeft != srcX0) {
- /* left-right flip */
- int tmp = dstX0;
- dstX0 = dstX1;
- dstX1 = tmp;
- }
+ assert(tex->width[0] != 0);
+ assert(tex->height[0] != 0);
- if (srcTop != srcY0) {
- /* up-down flip */
- int tmp = dstY0;
- dstY0 = dstY1;
- dstY1 = tmp;
- }
+ s0 = srcX0 / (float)tex->width[0];
+ s1 = srcX1 / (float)tex->width[0];
+ t0 = srcY0 / (float)tex->height[0];
+ t1 = srcY1 / (float)tex->height[0];
assert(screen->is_format_supported(screen, dst->format, PIPE_SURFACE));
@@ -443,9 +479,11 @@ util_blit_pixels_tex(struct blit_state *ctx,
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
- setup_vertex_data(ctx,
+ setup_vertex_data_tex(ctx,
(float) dstX0, (float) dstY0,
- (float) dstX1, (float) dstY1, z);
+ (float) dstX1, (float) dstY1,
+ s0, t0, s1, t1,
+ z);
util_draw_vertex_buffer(ctx->pipe, ctx->vbuf,
PIPE_PRIM_TRIANGLE_FAN,