extern void xa_context_destroy(struct xa_context *r);
+/**
+ * xa_yuv_planar_blit - 2D blit with color conversion and scaling.
+ *
+ * Performs a scaled blit with color conversion according to
+ * (R,G,B,A)^T = (CM)^T (Y,U,V,1)^T, where @conversion_matrix or CM in the
+ * formula is a four by four coefficient matrix. The input variable
+ * @yuv is an array of three xa_yuv_component surfaces.
+ */
extern int xa_yuv_planar_blit(struct xa_context *r,
int src_x,
int src_y,
{
struct ureg_src y_sampler, u_sampler, v_sampler;
struct ureg_src pos;
- struct ureg_src matrow0, matrow1, matrow2;
+ struct ureg_src matrow0, matrow1, matrow2, matrow3;
struct ureg_dst y, u, v, rgb;
struct ureg_dst out = ureg_DECL_output(ureg,
TGSI_SEMANTIC_COLOR,
matrow0 = ureg_DECL_constant(ureg, 0);
matrow1 = ureg_DECL_constant(ureg, 1);
matrow2 = ureg_DECL_constant(ureg, 2);
+ matrow3 = ureg_DECL_constant(ureg, 3);
ureg_TEX(ureg, y, TGSI_TEXTURE_2D, pos, y_sampler);
ureg_TEX(ureg, u, TGSI_TEXTURE_2D, pos, u_sampler);
ureg_TEX(ureg, v, TGSI_TEXTURE_2D, pos, v_sampler);
- ureg_SUB(ureg, u, ureg_src(u), ureg_scalar(matrow0, TGSI_SWIZZLE_W));
- ureg_SUB(ureg, v, ureg_src(v), ureg_scalar(matrow0, TGSI_SWIZZLE_W));
-
- ureg_MUL(ureg, rgb, ureg_scalar(ureg_src(y), TGSI_SWIZZLE_X), matrow0);
+ ureg_MOV(ureg, rgb, matrow3);
+ ureg_MAD(ureg, rgb,
+ ureg_scalar(ureg_src(y), TGSI_SWIZZLE_X), matrow0, ureg_src(rgb));
ureg_MAD(ureg, rgb,
ureg_scalar(ureg_src(u), TGSI_SWIZZLE_X), matrow1, ureg_src(rgb));
ureg_MAD(ureg, rgb,
ureg_scalar(ureg_src(v), TGSI_SWIZZLE_X), matrow2, ureg_src(rgb));
- /* rgb.a = 1; */
- ureg_MOV(ureg, ureg_writemask(rgb, TGSI_WRITEMASK_W),
- ureg_scalar(matrow0, TGSI_SWIZZLE_X));
-
ureg_MOV(ureg, out, ureg_src(rgb));
ureg_release_temporary(ureg, rgb);