st/vega: Add blend shaders for all blend modes.

1 files changed, 39 insertions, 21 deletions

diff --git a/src/gallium/state_trackers/vega/shader.c b/src/gallium/state_trackers/vega/shader.c
index 8577d21efe..92d3f5549e 100644
--- a/src/gallium/state_trackers/vega/shader.c
+++ b/src/gallium/state_trackers/vega/shader.c
@@ -128,16 +128,30 @@ static VGint setup_constant_buffer(struct shader *shader)
    return param_bytes;
 }
 
+static VGboolean blend_use_shader(struct vg_context *ctx)
+{
+   VGboolean advanced_blending;
+
+   switch (ctx->state.vg.blend_mode) {
+   case VG_BLEND_MULTIPLY:
+   case VG_BLEND_SCREEN:
+   case VG_BLEND_DARKEN:
+   case VG_BLEND_LIGHTEN:
+      advanced_blending = VG_TRUE;
+      break;
+   default:
+      advanced_blending = VG_FALSE;
+      break;
+   }
+
+   return advanced_blending;
+}
+
 static VGint blend_bind_samplers(struct vg_context *ctx,
                                  struct pipe_sampler_state **samplers,
                                  struct pipe_sampler_view **sampler_views)
 {
-   VGBlendMode bmode = ctx->state.vg.blend_mode;
-
-   if (bmode == VG_BLEND_MULTIPLY ||
-       bmode == VG_BLEND_SCREEN ||
-       bmode == VG_BLEND_DARKEN ||
-       bmode == VG_BLEND_LIGHTEN) {
+   if (blend_use_shader(ctx)) {
       samplers[2] = &ctx->blend_sampler;
       sampler_views[2] = vg_prepare_blend_surface(ctx);
 
@@ -209,7 +223,6 @@ static void setup_shader_program(struct shader *shader)
    VGint shader_id = 0;
    VGBlendMode blend_mode = ctx->state.vg.blend_mode;
    VGboolean black_white = is_format_bw(shader);
-   VGboolean advanced_blend;
 
    /* 1st stage: fill */
    if (!shader->drawing_image ||
@@ -256,26 +269,28 @@ static void setup_shader_program(struct shader *shader)
    if (shader->color_transform)
       shader_id |= VEGA_COLOR_TRANSFORM_SHADER;
 
-   switch(blend_mode) {
-   case VG_BLEND_MULTIPLY:
-   case VG_BLEND_SCREEN:
-   case VG_BLEND_DARKEN:
-   case VG_BLEND_LIGHTEN:
-      advanced_blend = VG_TRUE;
-      break;
-   default:
-      /* handled by pipe_blend_state */
-      advanced_blend = VG_FALSE;
-      break;
-   }
-
-   if (advanced_blend) {
+   if (blend_use_shader(ctx)) {
       if (shader->drawing_image && shader->image_mode == VG_DRAW_IMAGE_STENCIL)
          shader_id |= VEGA_ALPHA_PER_CHANNEL_SHADER;
       else
          shader_id |= VEGA_ALPHA_NORMAL_SHADER;
 
       switch(blend_mode) {
+      case VG_BLEND_SRC:
+         shader_id |= VEGA_BLEND_SRC_SHADER;
+         break;
+      case VG_BLEND_SRC_OVER:
+         shader_id |= VEGA_BLEND_SRC_OVER_SHADER;
+         break;
+      case VG_BLEND_DST_OVER:
+         shader_id |= VEGA_BLEND_DST_OVER_SHADER;
+         break;
+      case VG_BLEND_SRC_IN:
+         shader_id |= VEGA_BLEND_SRC_IN_SHADER;
+         break;
+      case VG_BLEND_DST_IN:
+         shader_id |= VEGA_BLEND_DST_IN_SHADER;
+         break;
       case VG_BLEND_MULTIPLY:
          shader_id |= VEGA_BLEND_MULTIPLY_SHADER;
          break;
@@ -288,6 +303,9 @@ static void setup_shader_program(struct shader *shader)
       case VG_BLEND_LIGHTEN:
          shader_id |= VEGA_BLEND_LIGHTEN_SHADER;
          break;
+      case VG_BLEND_ADDITIVE:
+         shader_id |= VEGA_BLEND_ADDITIVE_SHADER;
+         break;
       default:
          assert(0);
          break;