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wined3d: Enforce a stable texture units mapping. 

The GLSL shader backend hardcodes the sampler uniforms at program link
time, it can't handle a change in the mapping between draws with the
same shader program.

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 2015-11-12 23:06:42 +01:00 committed by Alexandre Julliard
parent 750dc790b7
commit d6c8146633
2 changed files with 19 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
dlls/wined3d/context.c
View File

@ -2542,6 +2542,7 @@ static void context_map_stage(struct wined3d_context *context, DWORD stage, DWOR
DWORD i = context->rev_tex_unit_map[unit];
DWORD j = context->tex_unit_map[stage];
TRACE("Mapping stage %u to unit %u.\n", stage, unit);
context->tex_unit_map[stage] = unit;
if (i != WINED3D_UNMAPPED_STAGE && i != stage)
context->tex_unit_map[i] = WINED3D_UNMAPPED_STAGE;
@ -2688,8 +2689,7 @@ static void context_map_psamplers(struct wined3d_context *context, const struct
}
static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
const struct wined3d_shader_resource_info *ps_resource_info,
const struct wined3d_shader_resource_info *vs_resource_info, DWORD unit)
const struct wined3d_shader_resource_info *ps_resource_info, DWORD unit)
{
DWORD current_mapping = context->rev_tex_unit_map[unit];
@ -2711,8 +2711,7 @@ static BOOL context_unit_free_for_vs(const struct wined3d_context *context,
return !ps_resource_info[current_mapping].type;
}
/* Used by a vertex sampler */
return !vs_resource_info[current_mapping - MAX_FRAGMENT_SAMPLERS].type;
return TRUE;
}
static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, const struct wined3d_state *state)
@ -2738,18 +2737,15 @@ static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, cons
DWORD vsampler_idx = i + MAX_FRAGMENT_SAMPLERS;
if (vs_resource_info[i].type)
{
if (context->tex_unit_map[vsampler_idx] != WINED3D_UNMAPPED_STAGE)
{
/* Already mapped somewhere */
continue;
}
while (start >= 0)
{
if (context_unit_free_for_vs(context, ps_resource_info, vs_resource_info, start))
if (context_unit_free_for_vs(context, ps_resource_info, start))
{
context_map_stage(context, vsampler_idx, start);
context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
if (context->tex_unit_map[vsampler_idx] != start)
{
context_map_stage(context, vsampler_idx, start);
context_invalidate_state(context, STATE_SAMPLER(vsampler_idx));
}
--start;
break;
@ -2757,6 +2753,8 @@ static void context_map_vsamplers(struct wined3d_context *context, BOOL ps, cons
--start;
}
if (context->tex_unit_map[vsampler_idx] == WINED3D_UNMAPPED_STAGE)
WARN("Couldn't find a free texture unit for vertex sampler %u.\n", i);
}
}
}
@ -2765,13 +2763,12 @@ static void context_update_tex_unit_map(struct wined3d_context *context, const s
{
BOOL vs = use_vs(state);
BOOL ps = use_ps(state);
/*
* Rules are:
* -> Pixel shaders need a 1:1 map. In theory the shader input could be mapped too, but
* that would be really messy and require shader recompilation
* -> When the mapping of a stage is changed, sampler and ALL texture stage states have
* to be reset. Because of that try to work with a 1:1 mapping as much as possible
*/
/* Try to go for a 1:1 mapping of the samplers when possible. Pixel shaders
* need a 1:1 map at the moment.
* When the mapping of a stage is changed, sampler and ALL texture stage
* states have to be reset. */
if (ps)
context_map_psamplers(context, state);
else

9
dlls/wined3d/glsl_shader.c
View File

@ -7095,13 +7095,8 @@ static void set_glsl_shader_program(const struct wined3d_context *context, const
GL_EXTCALL(glUseProgram(program_id));
checkGLcall("glUseProgram");
/* Load the vertex and pixel samplers now. The function that finds the mappings makes sure
* that it stays the same for each vertexshader-pixelshader pair(=linked glsl program). If
* a pshader with fixed function pipeline is used there are no vertex samplers, and if a
* vertex shader with fixed function pixel processing is used we make sure that the card
* supports enough samplers to allow the max number of vertex samplers with all possible
* fixed function fragment processing setups. So once the program is linked these samplers
* won't change. */
/* Texture unit mapping is set up to be the same each time the shader
* program is used so we can hardcode the sampler uniform values. */
shader_glsl_load_samplers(gl_info, priv, context->tex_unit_map, program_id);
entry->constant_update_mask = 0;