gtk/gsk/gpu/gskgpuglobalsop.c
Benjamin Otte 1b38cbd410 gpu: Handle storage buffers via descriptors
This makes the (currently single) storage buffer handled by
GskGpuDescriptors.
A side effect is that we now have support for multiple buffers in place.
We just have to use it.

Mixed into this commit is a complete rework of the pattern writer.
Instead of writing straight into the buffer (complete with repeatedly
backtracking when we have to do offscreens), write into a temporary
buffer and copy into the storage buffer on committing.
2024-01-07 07:22:52 +01:00

102 lines
2.9 KiB
C

#include "config.h"
#include "gskgpuglobalsopprivate.h"
#include "gskglframeprivate.h"
#include "gskgpuframeprivate.h"
#include "gskgpuprintprivate.h"
#include "gskroundedrectprivate.h"
#ifdef GDK_RENDERING_VULKAN
#include "gskvulkandeviceprivate.h"
#include "gskvulkanframeprivate.h"
#include "gskvulkandescriptorsprivate.h"
#endif
typedef struct _GskGpuGlobalsOp GskGpuGlobalsOp;
struct _GskGpuGlobalsOp
{
GskGpuOp op;
GskGpuGlobalsInstance instance;
};
static void
gsk_gpu_globals_op_finish (GskGpuOp *op)
{
}
static void
gsk_gpu_globals_op_print (GskGpuOp *op,
GskGpuFrame *frame,
GString *string,
guint indent)
{
gsk_gpu_print_op (string, indent, "globals");
gsk_gpu_print_newline (string);
}
#ifdef GDK_RENDERING_VULKAN
static GskGpuOp *
gsk_gpu_globals_op_vk_command (GskGpuOp *op,
GskGpuFrame *frame,
GskVulkanCommandState *state)
{
GskGpuGlobalsOp *self = (GskGpuGlobalsOp *) op;
vkCmdPushConstants (state->vk_command_buffer,
gsk_vulkan_device_get_vk_pipeline_layout (GSK_VULKAN_DEVICE (gsk_gpu_frame_get_device (frame)),
gsk_vulkan_descriptors_get_pipeline_layout (state->desc)),
VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
0,
sizeof (self->instance),
&self->instance);
return op->next;
}
#endif
static GskGpuOp *
gsk_gpu_globals_op_gl_command (GskGpuOp *op,
GskGpuFrame *frame,
GskGLCommandState *state)
{
GskGpuGlobalsOp *self = (GskGpuGlobalsOp *) op;
gsk_gl_frame_bind_globals (GSK_GL_FRAME (frame));
/* FIXME: Does it matter if we glBufferData() or glSubBufferData() here? */
glBufferSubData (GL_UNIFORM_BUFFER,
0,
sizeof (self->instance),
&self->instance);
return op->next;
}
static const GskGpuOpClass GSK_GPU_GLOBALS_OP_CLASS = {
GSK_GPU_OP_SIZE (GskGpuGlobalsOp),
GSK_GPU_STAGE_COMMAND,
gsk_gpu_globals_op_finish,
gsk_gpu_globals_op_print,
#ifdef GDK_RENDERING_VULKAN
gsk_gpu_globals_op_vk_command,
#endif
gsk_gpu_globals_op_gl_command
};
void
gsk_gpu_globals_op (GskGpuFrame *frame,
const graphene_vec2_t *scale,
const graphene_matrix_t *mvp,
const GskRoundedRect *clip)
{
GskGpuGlobalsOp *self;
self = (GskGpuGlobalsOp *) gsk_gpu_op_alloc (frame, &GSK_GPU_GLOBALS_OP_CLASS);
graphene_matrix_to_float (mvp, self->instance.mvp);
gsk_rounded_rect_to_float (clip, graphene_point_zero (), self->instance.clip);
graphene_vec2_to_float (scale, self->instance.scale);
}