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6d263f8680
Allows writing without blending. This is useful when copying/converting textures. In particular, we use it for colorspace conversions.
123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
#include "config.h"
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#include "gskgpublendopprivate.h"
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#include "gskgpuopprivate.h"
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#include "gskgpuprintprivate.h"
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typedef struct _GskGpuBlendOp GskGpuBlendOp;
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struct _GskGpuBlendOp
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{
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GskGpuOp op;
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GskGpuBlend blend;
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};
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static void
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gsk_gpu_blend_op_finish (GskGpuOp *op)
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{
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}
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static void
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gsk_gpu_blend_op_print (GskGpuOp *op,
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GskGpuFrame *frame,
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GString *string,
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guint indent)
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{
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GskGpuBlendOp *self = (GskGpuBlendOp *) op;
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gsk_gpu_print_op (string, indent, "blend");
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switch (self->blend)
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{
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case GSK_GPU_BLEND_NONE:
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gsk_gpu_print_string (string, "none");
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break;
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case GSK_GPU_BLEND_OVER:
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gsk_gpu_print_string (string, "over");
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break;
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case GSK_GPU_BLEND_ADD:
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gsk_gpu_print_string (string, "add");
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break;
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case GSK_GPU_BLEND_CLEAR:
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gsk_gpu_print_string (string, "clear");
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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gsk_gpu_print_newline (string);
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}
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#ifdef GDK_RENDERING_VULKAN
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static GskGpuOp *
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gsk_gpu_blend_op_vk_command (GskGpuOp *op,
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GskGpuFrame *frame,
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GskVulkanCommandState *state)
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{
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GskGpuBlendOp *self = (GskGpuBlendOp *) op;
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state->blend = self->blend;
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return op->next;
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}
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#endif
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static GskGpuOp *
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gsk_gpu_blend_op_gl_command (GskGpuOp *op,
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GskGpuFrame *frame,
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GskGLCommandState *state)
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{
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GskGpuBlendOp *self = (GskGpuBlendOp *) op;
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switch (self->blend)
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{
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case GSK_GPU_BLEND_NONE:
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glDisable (GL_BLEND);
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break;
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case GSK_GPU_BLEND_OVER:
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glEnable (GL_BLEND);
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glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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break;
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case GSK_GPU_BLEND_ADD:
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glEnable (GL_BLEND);
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glBlendFunc (GL_ONE, GL_ONE);
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break;
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case GSK_GPU_BLEND_CLEAR:
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glEnable (GL_BLEND);
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glBlendFunc (GL_ZERO, GL_ONE_MINUS_SRC_ALPHA);
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break;
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default:
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g_assert_not_reached ();
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break;
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}
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return op->next;
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}
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static const GskGpuOpClass GSK_GPU_BLEND_OP_CLASS = {
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GSK_GPU_OP_SIZE (GskGpuBlendOp),
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GSK_GPU_STAGE_COMMAND,
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gsk_gpu_blend_op_finish,
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gsk_gpu_blend_op_print,
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#ifdef GDK_RENDERING_VULKAN
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gsk_gpu_blend_op_vk_command,
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#endif
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gsk_gpu_blend_op_gl_command
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};
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void
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gsk_gpu_blend_op (GskGpuFrame *frame,
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GskGpuBlend blend)
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{
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GskGpuBlendOp *self;
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self = (GskGpuBlendOp *) gsk_gpu_op_alloc (frame, &GSK_GPU_BLEND_OP_CLASS);
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self->blend = blend;
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}
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