1 files changed, 114 insertions, 0 deletions
diff --git a/gsk/vulkan/gskvulkanpushconstants.c b/gsk/vulkan/gskvulkanpushconstants.c
new file mode 100644
index 0000000000..dc4ae404b9
--- /dev/null
+++ b/gsk/vulkan/gskvulkanpushconstants.c
@@ -0,0 +1,114 @@
+#include "config.h"
+
+#include "gskvulkanpushconstantsprivate.h"
+
+#include "gskroundedrectprivate.h"
+
+typedef struct _GskVulkanPushConstantsWire GskVulkanPushConstantsWire;
+
+struct _GskVulkanPushConstantsWire
+{
+  struct {
+    float mvp[16];
+    float clip[12];
+  } common;
+};
+
+void
+gsk_vulkan_push_constants_init (GskVulkanPushConstants  *constants,
+                                const graphene_matrix_t *mvp,
+                                const graphene_rect_t   *viewport)
+{
+  graphene_matrix_init_from_matrix (&constants->mvp, mvp);
+  gsk_vulkan_clip_init_empty (&constants->clip, viewport);
+}
+
+void
+gsk_vulkan_push_constants_init_copy (GskVulkanPushConstants       *self,
+                                     const GskVulkanPushConstants *src)
+{
+  *self = *src;
+}
+
+gboolean
+gsk_vulkan_push_constants_transform (GskVulkanPushConstants       *self,
+                                     const GskVulkanPushConstants *src,
+                                     const graphene_matrix_t      *transform,
+                                     const graphene_rect_t        *viewport)
+
+{
+  if (!gsk_vulkan_clip_transform (&self->clip, &src->clip, transform, viewport))
+    return FALSE;
+
+  graphene_matrix_multiply (transform, &src->mvp, &self->mvp);
+  return TRUE;
+}
+
+gboolean
+gsk_vulkan_push_constants_intersect_rect (GskVulkanPushConstants       *self,
+                                          const GskVulkanPushConstants *src,
+                                          const graphene_rect_t        *rect)
+{
+  if (!gsk_vulkan_clip_intersect_rect (&self->clip, &src->clip, rect))
+    return FALSE;
+
+  graphene_matrix_init_from_matrix (&self->mvp, &src->mvp);
+  return TRUE;
+}
+
+gboolean
+gsk_vulkan_push_constants_intersect_rounded (GskVulkanPushConstants       *self,
+                                             const GskVulkanPushConstants *src,
+                                             const GskRoundedRect         *rect)
+{
+  if (!gsk_vulkan_clip_intersect_rounded_rect (&self->clip, &src->clip, rect))
+    return FALSE;
+
+  graphene_matrix_init_from_matrix (&self->mvp, &src->mvp);
+  return TRUE;
+}
+
+static void
+gsk_vulkan_push_constants_wire_init (GskVulkanPushConstantsWire   *wire,
+                                     const GskVulkanPushConstants *self)
+{
+  graphene_matrix_to_float (&self->mvp, wire->common.mvp);
+  gsk_rounded_rect_to_float (&self->clip.rect, wire->common.clip);
+}
+
+void
+gsk_vulkan_push_constants_push (const GskVulkanPushConstants *self,
+                                VkCommandBuffer               command_buffer,
+                                VkPipelineLayout              pipeline_layout)
+{
+  GskVulkanPushConstantsWire wire;
+
+  gsk_vulkan_push_constants_wire_init (&wire, self);
+
+  vkCmdPushConstants (command_buffer,
+                      pipeline_layout,
+                      VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
+                      G_STRUCT_OFFSET (GskVulkanPushConstantsWire, common),
+                      sizeof (wire.common),
+                      &wire.common);
+}
+
+uint32_t
+gsk_vulkan_push_constants_get_range_count (void)
+{
+  return 1;
+}
+
+const VkPushConstantRange *
+gsk_vulkan_push_constants_get_ranges (void)
+{
+  static const VkPushConstantRange ranges[1] = {
+      {
+          .stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
+          .offset = G_STRUCT_OFFSET (GskVulkanPushConstantsWire, common),
+          .size = sizeof (((GskVulkanPushConstantsWire *) 0)->common)
+      }
+  };
+
+  return ranges;
+}