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vulkan: Make gradient shader use buffers

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This allows putting any number of color stops into the buffer, so
fallbacks with too many stops are no longer necessary.
This commit is contained in:
Benjamin Otte 2023-06-08 12:03:48 +02:00
parent d1135f9e3c
commit e3cc3f7841
5 changed files with 94 additions and 153 deletions
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82
gsk/vulkan/gskvulkanlineargradientpipeline.c
View File

@ -15,9 +15,8 @@ struct _GskVulkanLinearGradientInstance
float start[2];
float end[2];
gint32 repeating;
gint32 offset;
gint32 stop_count;
float offsets[GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS];
float colors[GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS][4];
};
G_DEFINE_TYPE (GskVulkanLinearGradientPipeline, gsk_vulkan_linear_gradient_pipeline, GSK_TYPE_VULKAN_PIPELINE)
@ -61,67 +60,13 @@ gsk_vulkan_linear_gradient_pipeline_get_input_state_create_info (GskVulkanPipeli
.location = 4,
.binding = 0,
.format = VK_FORMAT_R32_SINT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, stop_count),
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, offset),
},
{
.location = 5,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, offsets),
},
{
.location = 6,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, offsets) + sizeof (float) * 4,
},
{
.location = 7,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[0]),
},
{
.location = 8,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[1]),
},
{
.location = 9,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[2]),
},
{
.location = 10,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[3]),
},
{
.location = 11,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[4]),
},
{
.location = 12,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[5]),
},
{
.location = 13,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[6]),
},
{
.location = 14,
.binding = 0,
.format = VK_FORMAT_R32G32B32A32_SFLOAT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, colors[7]),
.format = VK_FORMAT_R32_SINT,
.offset = G_STRUCT_OFFSET (GskVulkanLinearGradientInstance, stop_count),
}
};
static const VkPipelineVertexInputStateCreateInfo info = {
@ -175,17 +120,11 @@ gsk_vulkan_linear_gradient_pipeline_collect_vertex_data (GskVulkanLinearGradient
const graphene_point_t *start,
const graphene_point_t *end,
gboolean repeating,
gsize n_stops,
const GskColorStop *stops)
gsize gradient_offset,
gsize n_stops)
{
GskVulkanLinearGradientInstance *instance = (GskVulkanLinearGradientInstance *) data;
gsize i;
if (n_stops > GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS)
{
g_warning ("Only %u color stops supported.", GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS);
n_stops = GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS;
}
instance->rect[0] = rect->origin.x + offset->x;
instance->rect[1] = rect->origin.y + offset->y;
instance->rect[2] = rect->size.width;
@ -195,15 +134,8 @@ gsk_vulkan_linear_gradient_pipeline_collect_vertex_data (GskVulkanLinearGradient
instance->end[0] = end->x + offset->x;
instance->end[1] = end->y + offset->y;
instance->repeating = repeating;
instance->offset = gradient_offset;
instance->stop_count = n_stops;
for (i = 0; i < n_stops; i++)
{
instance->offsets[i] = stops[i].offset;
instance->colors[i][0] = stops[i].color.red;
instance->colors[i][1] = stops[i].color.green;
instance->colors[i][2] = stops[i].color.blue;
instance->colors[i][3] = stops[i].color.alpha;
}
}
gsize

4
gsk/vulkan/gskvulkanlineargradientpipelineprivate.h
View File

@ -28,8 +28,8 @@ void gsk_vulkan_linear_gradient_pipeline_collect_vertex_data
const graphene_point_t *start,
const graphene_point_t *end,
gboolean repeating,
gsize n_stops,
const GskColorStop *stops);
gsize gradient_offset,
gsize n_stops);
gsize gsk_vulkan_linear_gradient_pipeline_draw (GskVulkanLinearGradientPipeline*pipeline,
VkCommandBuffer command_buffer,
gsize offset,

32
gsk/vulkan/gskvulkanrenderpass.c
View File

@ -77,6 +77,7 @@ struct _GskVulkanOpRender
gsize vertex_offset; /* offset into vertex buffer */
guint32 image_descriptor[2]; /* index into descriptor for the (image, sampler) */
guint32 image_descriptor2[2]; /* index into descriptor for the 2nd image (if relevant) */
gsize buffer_offset; /* offset into buffer */
graphene_rect_t source_rect; /* area that source maps to */
graphene_rect_t source2_rect; /* area that source2 maps to */
};
@ -406,7 +407,7 @@ gsk_vulkan_render_pass_add_color_node (GskVulkanRenderPass *self,
}
static inline gboolean
gsk_vulkan_render_pass_add_repeating_linear_gradient_node (GskVulkanRenderPass *self,
gsk_vulkan_render_pass_add_linear_gradient_node (GskVulkanRenderPass *self,
GskVulkanRender *render,
const GskVulkanParseState *state,
GskRenderNode *node)
@ -418,11 +419,6 @@ gsk_vulkan_render_pass_add_repeating_linear_gradient_node (GskVulkanRenderPass
.render.offset = state->offset,
};
if (gsk_linear_gradient_node_get_n_color_stops (node) > GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS)
FALLBACK ("Linear gradient with %zu color stops, hardcoded limit is %u",
gsk_linear_gradient_node_get_n_color_stops (node),
GSK_VULKAN_LINEAR_GRADIENT_PIPELINE_MAX_COLOR_STOPS);
if (gsk_vulkan_clip_contains_rect (&state->clip, &state->offset, &node->bounds))
pipeline_type = GSK_VULKAN_PIPELINE_LINEAR_GRADIENT;
else if (state->clip.type == GSK_VULKAN_CLIP_RECT)
@ -1138,8 +1134,8 @@ static const GskVulkanRenderPassNodeFunc nodes_vtable[N_RENDER_NODES] = {
[GSK_CONTAINER_NODE] = gsk_vulkan_render_pass_add_container_node,
[GSK_CAIRO_NODE] = gsk_vulkan_render_pass_add_cairo_node,
[GSK_COLOR_NODE] = gsk_vulkan_render_pass_add_color_node,
[GSK_LINEAR_GRADIENT_NODE] = gsk_vulkan_render_pass_add_repeating_linear_gradient_node,
[GSK_REPEATING_LINEAR_GRADIENT_NODE] = gsk_vulkan_render_pass_add_repeating_linear_gradient_node,
[GSK_LINEAR_GRADIENT_NODE] = gsk_vulkan_render_pass_add_linear_gradient_node,
[GSK_REPEATING_LINEAR_GRADIENT_NODE] = gsk_vulkan_render_pass_add_linear_gradient_node,
[GSK_RADIAL_GRADIENT_NODE] = NULL,
[GSK_REPEATING_RADIAL_GRADIENT_NODE] = NULL,
[GSK_CONIC_GRADIENT_NODE] = NULL,
@ -1896,8 +1892,8 @@ gsk_vulkan_render_pass_collect_vertex_data (GskVulkanRenderPass *self,
gsk_linear_gradient_node_get_start (op->render.node),
gsk_linear_gradient_node_get_end (op->render.node),
gsk_render_node_get_node_type (op->render.node) == GSK_REPEATING_LINEAR_GRADIENT_NODE,
gsk_linear_gradient_node_get_n_color_stops (op->render.node),
gsk_linear_gradient_node_get_color_stops (op->render.node, NULL));
op->render.buffer_offset,
gsk_linear_gradient_node_get_n_color_stops (op->render.node));
break;
case GSK_VULKAN_OP_OPACITY:
@ -2125,11 +2121,25 @@ gsk_vulkan_render_pass_reserve_descriptor_sets (GskVulkanRenderPass *self,
}
break;
case GSK_VULKAN_OP_LINEAR_GRADIENT:
{
gsize n_stops = gsk_linear_gradient_node_get_n_color_stops (op->render.node);
guchar *mem;
mem = gsk_vulkan_render_get_buffer_memory (render,
n_stops * sizeof (GskColorStop),
G_ALIGNOF (GskColorStop),
&op->render.buffer_offset);
memcpy (mem,
gsk_linear_gradient_node_get_color_stops (op->render.node, NULL),
n_stops * sizeof (GskColorStop));
}
break;
default:
g_assert_not_reached ();
case GSK_VULKAN_OP_COLOR:
case GSK_VULKAN_OP_LINEAR_GRADIENT:
case GSK_VULKAN_OP_BORDER:
case GSK_VULKAN_OP_INSET_SHADOW:
case GSK_VULKAN_OP_OUTSET_SHADOW:

52
gsk/vulkan/resources/linear.frag
View File

@ -1,6 +1,8 @@
#version 450
#include "common.frag.glsl"
#include "clip.frag.glsl"
#include "rect.frag.glsl"
struct ColorStop {
float offset;
@ -8,29 +10,55 @@ struct ColorStop {
};
layout(location = 0) in vec2 inPos;
layout(location = 1) in float inGradientPos;
layout(location = 2) in flat int inRepeating;
layout(location = 3) in flat int inStopCount;
layout(location = 4) in flat ColorStop inStops[8];
layout(location = 1) in flat Rect inRect;
layout(location = 2) in float inGradientPos;
layout(location = 3) in flat int inRepeating;
layout(location = 4) in flat int inStopOffset;
layout(location = 5) in flat int inStopCount;
layout(location = 0) out vec4 outColor;
layout(location = 0) out vec4 color;
ColorStop
get_stop(int i)
{
ColorStop result;
result.offset = get_float(inStopOffset + i * 5);
result.color = vec4(get_float(inStopOffset + i * 5 + 1),
get_float(inStopOffset + i * 5 + 2),
get_float(inStopOffset + i * 5 + 3),
get_float(inStopOffset + i * 5 + 4));
return result;
}
void main()
{
float pos;
if (inRepeating != 0)
pos = fract (inGradientPos);
else
pos = clamp (inGradientPos, 0, 1);
vec4 color = inStops[0].color;
int n = clamp (inStopCount, 2, 8);
for (int i = 1; i < n; i++)
ColorStop stop = get_stop (0);
float last_offset = stop.offset;
color = stop.color;
for (int i = 1; i < inStopCount; i++)
{
if (inStops[i].offset > inStops[i-1].offset)
color = mix (color, inStops[i].color, clamp((pos - inStops[i-1].offset) / (inStops[i].offset - inStops[i-1].offset), 0, 1));
stop = get_stop(i);
if (stop.offset < pos)
color = stop.color;
else
color = mix (color, stop.color, clamp((pos - last_offset) / (stop.offset - last_offset), 0, 1));
last_offset = stop.offset;
if (last_offset >= pos)
break;
}
//outColor = vec4(pos, pos, pos, 1.0);
outColor = clip (inPos, color);
if (last_offset < pos)
color = mix (color, stop.color, clamp((pos - last_offset) / (1 - last_offset), 0, 1));
float alpha = color.a * rect_coverage (inRect, inPos);
color = clip_scaled (inPos, vec4(color.rgb, 1) * alpha);
}

59
gsk/vulkan/resources/linear.vert
View File

@ -1,6 +1,7 @@
#version 450
#include "clip.vert.glsl"
#include "common.vert.glsl"
#include "rect.vert.glsl"
struct ColorStop {
float offset;
@ -11,62 +12,32 @@ layout(location = 0) in vec4 inRect;
layout(location = 1) in vec2 inStart;
layout(location = 2) in vec2 inEnd;
layout(location = 3) in int inRepeating;
layout(location = 4) in int inStopCount;
layout(location = 5) in vec4 inOffsets0;
layout(location = 6) in vec4 inOffsets1;
layout(location = 7) in vec4 inColors0;
layout(location = 8) in vec4 inColors1;
layout(location = 9) in vec4 inColors2;
layout(location = 10) in vec4 inColors3;
layout(location = 11) in vec4 inColors4;
layout(location = 12) in vec4 inColors5;
layout(location = 13) in vec4 inColors6;
layout(location = 14) in vec4 inColors7;
layout(location = 4) in int inStopOffset;
layout(location = 5) in int inStopCount;
layout(location = 0) out vec2 outPos;
layout(location = 1) out float outGradientPos;
layout(location = 2) out flat int outRepeating;
layout(location = 3) out flat int outStopCount;
layout(location = 4) out flat ColorStop outStops[8];
vec2 offsets[6] = { vec2(0.0, 0.0),
vec2(1.0, 0.0),
vec2(0.0, 1.0),
vec2(0.0, 1.0),
vec2(1.0, 0.0),
vec2(1.0, 1.0) };
layout(location = 1) out flat Rect outRect;
layout(location = 2) out float outGradientPos;
layout(location = 3) out flat int outRepeating;
layout(location = 4) out flat int outStopOffset;
layout(location = 5) out flat int outStopCount;
float
get_gradient_pos (vec2 pos)
{
pos = pos - inStart;
vec2 grad = inEnd - inStart;
pos = pos - inStart * push.scale;
vec2 grad = (inEnd - inStart) * push.scale;
return dot (pos, grad) / dot (grad, grad);
}
void main() {
vec4 rect = clip (inRect);
vec2 pos = rect.xy + rect.zw * offsets[gl_VertexIndex];
gl_Position = push.mvp * vec4 (push.scale * pos, 0.0, 1.0);
Rect r = rect_from_gsk (inRect);
vec2 pos = set_position_from_rect (r);
outPos = pos;
outRect = r;
outGradientPos = get_gradient_pos (pos);
outRepeating = inRepeating;
outStopOffset = inStopOffset;
outStopCount = inStopCount;
outStops[0].offset = inOffsets0[0];
outStops[0].color = inColors0 * vec4(inColors0.aaa, 1.0);
outStops[1].offset = inOffsets0[1];
outStops[1].color = inColors1 * vec4(inColors1.aaa, 1.0);
outStops[2].offset = inOffsets0[2];
outStops[2].color = inColors2 * vec4(inColors2.aaa, 1.0);
outStops[3].offset = inOffsets0[3];
outStops[3].color = inColors3 * vec4(inColors3.aaa, 1.0);
outStops[4].offset = inOffsets1[0];
outStops[4].color = inColors4 * vec4(inColors4.aaa, 1.0);
outStops[5].offset = inOffsets1[1];
outStops[5].color = inColors5 * vec4(inColors5.aaa, 1.0);
outStops[6].offset = inOffsets1[2];
outStops[6].color = inColors6 * vec4(inColors6.aaa, 1.0);
outStops[7].offset = inOffsets1[3];
outStops[7].color = inColors7 * vec4(inColors7.aaa, 1.0);
}