"Implement" is somewhat debatable, as it works currently with both Mesa and
NVidia blob drivers. However, we're not following the spec.
Based on a patch by Michael Müller.
Signed-off-by: Zebediah Figura <z.figura12(a)gmail.com>
---
dlls/wined3d/context.c | 2 ++
dlls/wined3d/glsl_shader.c | 19 ++++++++++++++++---
dlls/wined3d/shader.c | 2 ++
dlls/wined3d/state.c | 27 +++++++++++++++++++++++++++
dlls/wined3d/wined3d_private.h | 9 ++++++---
5 files changed, 53 insertions(+), 6 deletions(-)
diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index d9e3dfaa50..633d5176ba 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -3444,6 +3444,8 @@ static uint32_t find_draw_buffers_mask(const struct wined3d_context_gl *context_
rt_mask = ps ? ps->reg_maps.rt_mask : 1;
rt_mask &= (1u << gl_info->limits.buffers) - 1;
+ if (state->blend_state && state->blend_state->dual_source)
+ rt_mask = 1;
mask = rt_mask;
while (mask)
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 4a2fbce553..2c2ba33488 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -7772,7 +7772,10 @@ static GLuint shader_glsl_generate_fragment_shader(const struct wined3d_context_
{
const struct wined3d_shader_signature *output_signature = &shader->output_signature;
- shader_addline(buffer, "vec4 ps_out[%u];\n", gl_info->limits.buffers);
+ if (args->dual_source_blend)
+ shader_addline(buffer, "vec4 ps_out[2];\n");
+ else
+ shader_addline(buffer, "vec4 ps_out[%u];\n", gl_info->limits.buffers);
if (output_signature->element_count)
{
for (i = 0; i < output_signature->element_count; ++i)
@@ -7787,7 +7790,12 @@ static GLuint shader_glsl_generate_fragment_shader(const struct wined3d_context_
continue;
}
if (shader_glsl_use_explicit_attrib_location(gl_info))
- shader_addline(buffer, "layout(location = %u) ", output->semantic_idx);
+ {
+ if (args->dual_source_blend)
+ shader_addline(buffer, "layout(location = 0, index = %u) ", output->semantic_idx);
+ else
+ shader_addline(buffer, "layout(location = %u) ", output->semantic_idx);
+ }
shader_addline(buffer, "out %s4 color_out%u;\n",
component_type_info[output->component_type].glsl_vector_type, output->semantic_idx);
}
@@ -7800,7 +7808,12 @@ static GLuint shader_glsl_generate_fragment_shader(const struct wined3d_context_
{
i = wined3d_bit_scan(&mask);
if (shader_glsl_use_explicit_attrib_location(gl_info))
- shader_addline(buffer, "layout(location = %u) ", i);
+ {
+ if (args->dual_source_blend)
+ shader_addline(buffer, "layout(location = 0, index = %u) ", i);
+ else
+ shader_addline(buffer, "layout(location = %u) ", i);
+ }
shader_addline(buffer, "out vec4 color_out%u;\n", i);
}
}
diff --git a/dlls/wined3d/shader.c b/dlls/wined3d/shader.c
index d9ef1a96e2..3e2a756757 100644
--- a/dlls/wined3d/shader.c
+++ b/dlls/wined3d/shader.c
@@ -4167,6 +4167,8 @@ void find_ps_compile_args(const struct wined3d_state *state, const struct wined3
if (rtv && rtv->format->id == WINED3DFMT_A8_UNORM && !is_identity_fixup(rtv->format->color_fixup))
args->rt_alpha_swizzle |= 1u << i;
}
+
+ args->dual_source_blend = state->blend_state && state->blend_state->dual_source;
}
static HRESULT pixel_shader_init(struct wined3d_shader *shader, struct wined3d_device *device,
diff --git a/dlls/wined3d/state.c b/dlls/wined3d/state.c
index 6289317936..fb55bfe0f3 100644
--- a/dlls/wined3d/state.c
+++ b/dlls/wined3d/state.c
@@ -74,6 +74,11 @@ void * CDECL wined3d_blend_state_get_parent(const struct wined3d_blend_state *st
return state->parent;
}
+static BOOL is_dual_source(enum wined3d_blend state)
+{
+ return state >= WINED3D_BLEND_SRC1COLOR && state <= WINED3D_BLEND_INVSRC1ALPHA;
+}
+
HRESULT CDECL wined3d_blend_state_create(struct wined3d_device *device,
const struct wined3d_blend_state_desc *desc, void *parent,
const struct wined3d_parent_ops *parent_ops, struct wined3d_blend_state **state)
@@ -92,6 +97,12 @@ HRESULT CDECL wined3d_blend_state_create(struct wined3d_device *device,
object->parent_ops = parent_ops;
object->device = device;
+ object->dual_source = desc->rt[0].enable
+ && (is_dual_source(desc->rt[0].src)
+ || is_dual_source(desc->rt[0].dst)
+ || is_dual_source(desc->rt[0].src_alpha)
+ || is_dual_source(desc->rt[0].dst_alpha));
+
TRACE("Created blend state %p.\n", object);
*state = object;
@@ -650,6 +661,7 @@ static void blend_db2(struct wined3d_context *context, const struct wined3d_stat
GLenum src_blend, dst_blend, src_blend_alpha, dst_blend_alpha;
const struct wined3d_blend_state *b = state->blend_state;
const struct wined3d_format *rt_format;
+ BOOL dual_source = b && b->dual_source;
unsigned int i;
if (b && b->desc.alpha_to_coverage)
@@ -658,6 +670,13 @@ static void blend_db2(struct wined3d_context *context, const struct wined3d_stat
gl_info->gl_ops.gl.p_glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
checkGLcall("glEnable GL_SAMPLE_ALPHA_TO_COVERAGE");
+ if (context->last_was_dual_source_blend != dual_source)
+ {
+ /* Dual source blending changes the location of the output varyings. */
+ context->shader_update_mask |= 1u << WINED3D_SHADER_TYPE_PIXEL;
+ context->last_was_dual_source_blend = dual_source;
+ }
+
if (!b || !b->desc.independent)
{
blend(context, state, state_id);
@@ -708,6 +727,7 @@ static void blend_dbb(struct wined3d_context *context, const struct wined3d_stat
{
const struct wined3d_gl_info *gl_info = wined3d_context_gl(context)->gl_info;
const struct wined3d_blend_state *b = state->blend_state;
+ BOOL dual_source = b && b->dual_source;
unsigned int i;
if (b && b->desc.alpha_to_coverage)
@@ -716,6 +736,13 @@ static void blend_dbb(struct wined3d_context *context, const struct wined3d_stat
gl_info->gl_ops.gl.p_glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
checkGLcall("glEnable GL_SAMPLE_ALPHA_TO_COVERAGE");
+ if (context->last_was_dual_source_blend != dual_source)
+ {
+ /* Dual source blending changes the location of the output varyings. */
+ context->shader_update_mask |= 1u << WINED3D_SHADER_TYPE_PIXEL;
+ context->last_was_dual_source_blend = dual_source;
+ }
+
if (!b || !b->desc.independent)
{
blend(context, state, state_id);
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 9240b0e455..f8ee3c6446 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1394,7 +1394,8 @@ struct ps_compile_args
DWORD alpha_test_func : 3;
DWORD render_offscreen : 1;
DWORD rt_alpha_swizzle : 8; /* MAX_RENDER_TARGET_VIEWS, 8 */
- DWORD padding : 18;
+ DWORD dual_source_blend : 1;
+ DWORD padding : 17;
};
enum fog_src_type
@@ -1954,7 +1955,7 @@ struct wined3d_context
DWORD last_was_ffp_blit : 1;
DWORD last_was_blit : 1;
DWORD last_was_ckey : 1;
- DWORD namedArraysLoaded : 1;
+ DWORD last_was_dual_source_blend : 1;
DWORD texShaderBumpMap : 8; /* WINED3D_MAX_TEXTURES, 8 */
DWORD lastWasPow2Texture : 8; /* WINED3D_MAX_TEXTURES, 8 */
DWORD fixed_function_usage_map : 8; /* WINED3D_MAX_TEXTURES, 8 */
@@ -1971,7 +1972,8 @@ struct wined3d_context
DWORD destroyed : 1;
DWORD destroy_delayed : 1;
DWORD clip_distance_mask : 8; /* WINED3D_MAX_CLIP_DISTANCES, 8 */
- DWORD padding : 14;
+ DWORD namedArraysLoaded : 1;
+ DWORD padding : 13;
DWORD constant_update_mask;
DWORD numbered_array_mask;
@@ -3140,6 +3142,7 @@ struct wined3d_blend_state
{
LONG refcount;
struct wined3d_blend_state_desc desc;
+ BOOL dual_source;
void *parent;
const struct wined3d_parent_ops *parent_ops;
--
2.25.1