1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
#include "config.h"
#include "gskvulkantextpipelineprivate.h"
struct _GskVulkanTextPipeline
{
GObject parent_instance;
};
typedef struct _GskVulkanTextInstance GskVulkanTextInstance;
struct _GskVulkanTextInstance
{
float rect[4];
float tex_rect[4];
float color[4];
};
G_DEFINE_TYPE (GskVulkanTextPipeline, gsk_vulkan_text_pipeline, GSK_TYPE_VULKAN_PIPELINE)
static const VkPipelineVertexInputStateCreateInfo *
gsk_vulkan_text_pipeline_get_input_state_create_info (GskVulkanPipeline *self)
{
static const VkVertexInputBindingDescription vertexBindingDescriptions[] = {
{
.binding = 0,
.stride = sizeof (GskVulkanTextInstance),
.inputRate = VK_VERTEX_INPUT_RATE_INSTANCE
}
};
static const VkVertexInputAttributeDescription vertexInputAttributeDescription[] = {
{
.location = 0,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanTextInstance, rect),
},
{
.location = 1,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanTextInstance, tex_rect),
},
{
.location = 2,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanTextInstance, color),
}
};
static const VkPipelineVertexInputStateCreateInfo info = {
.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
.vertexBindingDescriptionCount = G_N_ELEMENTS (vertexBindingDescriptions),
.pVertexBindingDescriptions = vertexBindingDescriptions,
.vertexAttributeDescriptionCount = G_N_ELEMENTS (vertexInputAttributeDescription),
.pVertexAttributeDescriptions = vertexInputAttributeDescription
};
return &info;
}
static void
gsk_vulkan_text_pipeline_finalize (GObject *gobject)
{
//GskVulkanTextPipeline *self = GSK_VULKAN_TEXT_PIPELINE (gobject);
G_OBJECT_CLASS (gsk_vulkan_text_pipeline_parent_class)->finalize (gobject);
}
static void
gsk_vulkan_text_pipeline_class_init (GskVulkanTextPipelineClass *klass)
{
GskVulkanPipelineClass *pipeline_class = GSK_VULKAN_PIPELINE_CLASS (klass);
G_OBJECT_CLASS (klass)->finalize = gsk_vulkan_text_pipeline_finalize;
pipeline_class->get_input_state_create_info = gsk_vulkan_text_pipeline_get_input_state_create_info;
}
static void
gsk_vulkan_text_pipeline_init (GskVulkanTextPipeline *self)
{
}
GskVulkanPipeline *
gsk_vulkan_text_pipeline_new (GdkVulkanContext *context,
VkPipelineLayout layout,
const char *shader_name,
VkRenderPass render_pass)
{
return gsk_vulkan_pipeline_new (GSK_TYPE_VULKAN_TEXT_PIPELINE, context, layout, shader_name, render_pass);
}
gsize
gsk_vulkan_text_pipeline_count_vertex_data (GskVulkanTextPipeline *pipeline,
int num_instances)
{
return sizeof (GskVulkanTextInstance) * num_instances;
}
void
gsk_vulkan_text_pipeline_collect_vertex_data (GskVulkanTextPipeline *pipeline,
guchar *data,
GskVulkanRenderer *renderer,
const graphene_rect_t *rect,
PangoFont *font,
guint total_glyphs,
const PangoGlyphInfo *glyphs,
const GdkRGBA *color,
const graphene_point_t *offset,
guint start_glyph,
guint num_glyphs,
float scale)
{
GskVulkanTextInstance *instances = (GskVulkanTextInstance *) data;
int i;
int count = 0;
int x_position = 0;
for (i = 0; i < start_glyph; i++)
x_position += glyphs[i].geometry.width;
for (; i < total_glyphs && count < num_glyphs; i++)
{
const PangoGlyphInfo *gi = &glyphs[i];
if (gi->glyph != PANGO_GLYPH_EMPTY)
{
double cx = (x_position + gi->geometry.x_offset) / PANGO_SCALE;
double cy = gi->geometry.y_offset / PANGO_SCALE;
GskVulkanTextInstance *instance = &instances[count];
GskVulkanCachedGlyph *glyph;
glyph = gsk_vulkan_renderer_get_cached_glyph (renderer,
font,
gi->glyph,
x_position + gi->geometry.x_offset,
gi->geometry.y_offset,
scale);
instance->rect[0] = offset->x + cx + glyph->draw_x;
instance->rect[1] = offset->y + cy + glyph->draw_y;
instance->rect[2] = glyph->draw_width;
instance->rect[3] = glyph->draw_height;
instance->tex_rect[0] = glyph->tx;
instance->tex_rect[1] = glyph->ty;
instance->tex_rect[2] = glyph->tw;
instance->tex_rect[3] = glyph->th;
instance->color[0] = color->red;
instance->color[1] = color->green;
instance->color[2] = color->blue;
instance->color[3] = color->alpha;
count++;
}
x_position += gi->geometry.width;
}
}
gsize
gsk_vulkan_text_pipeline_draw (GskVulkanTextPipeline *pipeline,
VkCommandBuffer command_buffer,
gsize offset,
gsize n_commands)
{
vkCmdDraw (command_buffer,
6, n_commands,
0, offset);
return n_commands;
}
|
