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wined3d: Simplify shader interface matching for SM4+ vertex shaders. 

After some testing it looks like, with SM4+ on Windows:
1. Output registers have to match with input registers from the
following shader stage (register index and mask). There is no "smart"
matching of semantics like in SM3.
2. Using uninitialized varyings in SM4+ shaders doesn't give consistent
results.
That means we can simplify the relevant code quite a bit. Applications
shouldn't be able to depend on particular values for uninitialized
varyings so we can avoid explicitly initializing them.

Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Matteo Bruni 2016-05-20 19:55:54 +02:00 committed by Alexandre Julliard
parent 2c90b9aee0
commit cf52d1635c
2 changed files with 35 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
dlls/wined3d/glsl_shader.c
View File

@ -5152,7 +5152,7 @@ static void delete_glsl_program_entry(struct shader_glsl_priv *priv, const struc
HeapFree(GetProcessHeap(), 0, entry);
}
static void shader_glsl_setup_shader_output(struct shader_glsl_priv *priv,
static void shader_glsl_setup_vs3_output(struct shader_glsl_priv *priv,
const struct wined3d_gl_info *gl_info, const DWORD *map,
const struct wined3d_shader_signature *input_signature,
const struct wined3d_shader_reg_maps *reg_maps_in,
@ -5256,6 +5256,33 @@ static void shader_glsl_setup_shader_output(struct shader_glsl_priv *priv,
string_buffer_release(&priv->string_buffers, destination);
}
static void shader_glsl_setup_sm4_shader_output(struct shader_glsl_priv *priv,
const struct wined3d_shader_signature *output_signature,
const struct wined3d_shader_reg_maps *reg_maps_out, const char *out_array_name)
{
struct wined3d_string_buffer *destination = string_buffer_get(&priv->string_buffers);
struct wined3d_string_buffer *buffer = &priv->shader_buffer;
char reg_mask[6];
unsigned int i;
for (i = 0; i < output_signature->element_count; ++i)
{
const struct wined3d_shader_signature_element *output = &output_signature->elements[i];
if (!(reg_maps_out->output_registers & (1u << output->register_idx)))
continue;
string_buffer_sprintf(destination, "%s[%u]", out_array_name, output->register_idx);
shader_glsl_write_mask_to_str(output->mask, reg_mask);
shader_addline(buffer, "%s%s = shader_out[%u]%s;\n",
destination->buffer, reg_mask, output->register_idx, reg_mask);
}
string_buffer_release(&priv->string_buffers, destination);
}
static void shader_glsl_setup_sm3_rasterizer_input(struct shader_glsl_priv *priv,
const struct wined3d_gl_info *gl_info, const DWORD *map,
const struct wined3d_shader_signature *input_signature,
@ -5294,8 +5321,11 @@ static void shader_glsl_setup_sm3_rasterizer_input(struct shader_glsl_priv *priv
}
/* Then, setup the pixel shader input. */
shader_glsl_setup_shader_output(priv, gl_info, map, input_signature, reg_maps_in,
output_signature, reg_maps_out, "ps_link");
if (reg_maps_out->shader_version.major < 4)
shader_glsl_setup_vs3_output(priv, gl_info, map, input_signature, reg_maps_in,
output_signature, reg_maps_out, "ps_link");
else
shader_glsl_setup_sm4_shader_output(priv, output_signature, reg_maps_out, "ps_link");
}
/* Context activation is done by the caller. */

3
dlls/wined3d/shader.c
View File

@ -3139,7 +3139,8 @@ static HRESULT pixel_shader_init(struct wined3d_shader *shader, struct wined3d_d
/* Don't do any register mapping magic if it is not needed, or if we can't
* achieve anything anyway */
if (highest_reg_used < (gl_info->limits.glsl_varyings / 4)
|| num_regs_used > (gl_info->limits.glsl_varyings / 4))
|| num_regs_used > (gl_info->limits.glsl_varyings / 4)
|| shader->reg_maps.shader_version.major >= 4)
{
if (num_regs_used > (gl_info->limits.glsl_varyings / 4))
{