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vkd3d-shader/ir: Lower IMUL and UMUL to IMUL_LOW.

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This commit is contained in:
Giovanni Mascellani
2025-06-10 17:11:31 +02:00
committed by Henri Verbeet
parent 4a39db797b
commit 31581b0002
Notes: Henri Verbeet 2025-06-24 16:31:58 +02:00 
Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1583
4 changed files with 26 additions and 95 deletions
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34
libs/vkd3d-shader/glsl.c
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@@ -1250,37 +1250,6 @@ static void shader_glsl_movc(struct vkd3d_glsl_generator *gen, const struct vkd3
glsl_dst_cleanup(&dst, &gen->string_buffers);
}
static void shader_glsl_mul_extended(struct vkd3d_glsl_generator *gen, const struct vkd3d_shader_instruction *ins)
{
struct glsl_src src[2];
struct glsl_dst dst;
uint32_t mask;
if (ins->dst[0].reg.type != VKD3DSPR_NULL)
{
/* FIXME: imulExtended()/umulExtended() from ARB_gpu_shader5/GLSL 4.00+. */
mask = glsl_dst_init(&dst, gen, ins, &ins->dst[0]);
shader_glsl_print_assignment(gen, &dst, "<unhandled 64-bit multiplication>");
glsl_dst_cleanup(&dst, &gen->string_buffers);
vkd3d_glsl_compiler_error(gen, VKD3D_SHADER_ERROR_GLSL_INTERNAL,
"Internal compiler error: Unhandled 64-bit integer multiplication.");
}
if (ins->dst[1].reg.type != VKD3DSPR_NULL)
{
mask = glsl_dst_init(&dst, gen, ins, &ins->dst[1]);
glsl_src_init(&src[0], gen, &ins->src[0], mask);
glsl_src_init(&src[1], gen, &ins->src[1], mask);
shader_glsl_print_assignment(gen, &dst, "%s * %s", src[0].str->buffer, src[1].str->buffer);
glsl_src_cleanup(&src[1], &gen->string_buffers);
glsl_src_cleanup(&src[0], &gen->string_buffers);
glsl_dst_cleanup(&dst, &gen->string_buffers);
}
}
static void shader_glsl_print_sysval_name(struct vkd3d_string_buffer *buffer, struct vkd3d_glsl_generator *gen,
enum vkd3d_shader_sysval_semantic sysval, unsigned int idx)
{
@@ -1584,9 +1553,6 @@ static void vkd3d_glsl_handle_instruction(struct vkd3d_glsl_generator *gen,
case VKD3DSIH_UMIN:
shader_glsl_intrinsic(gen, ins, "min");
break;
case VKD3DSIH_IMUL:
shader_glsl_mul_extended(gen, ins);
break;
case VKD3DSIH_IMUL_LOW:
shader_glsl_binop(gen, ins, "*");
break;