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Add Wii U smooth framebuffer upscaling

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This commit is contained in:
Clownacy 2020-10-04 13:51:16 +01:00
parent 30ec081d7b
commit ce6e4e2a32
1 changed files with 97 additions and 18 deletions
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87
src/Backends/Rendering/WiiU.cpp
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@ -20,6 +20,9 @@
#include "../Misc.h"
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
typedef enum RenderMode
{
MODE_BLANK,
@ -69,6 +72,8 @@ static GX2Sampler sampler_point;
static GX2Sampler sampler_linear;
static RenderBackend_Surface *framebuffer_surface;
static RenderBackend_Surface *upscaled_framebuffer_surface_tv;
static RenderBackend_Surface *upscaled_framebuffer_surface_drc;
static GX2ContextState *gx2_context;
@ -291,6 +296,46 @@ RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t scree
framebuffer_surface = RenderBackend_CreateSurface(screen_width, screen_height, true);
if (framebuffer_surface != NULL)
{
// Create upscaled framebuffer surface
size_t tv_width, tv_height;
switch (GX2GetSystemTVScanMode())
{
case GX2_TV_SCAN_MODE_480I:
case GX2_TV_SCAN_MODE_480P:
tv_width = 854;
tv_height = 480;
break;
case GX2_TV_SCAN_MODE_576I:
case GX2_TV_SCAN_MODE_720P:
tv_width = 1280;
tv_height = 720;
break;
case GX2_TV_SCAN_MODE_1080I:
case GX2_TV_SCAN_MODE_1080P:
tv_width = 1920;
tv_height = 1080;
break;
}
size_t upscale_factor = MAX(1, MIN((tv_width + screen_width / 2) / screen_width, (tv_height + screen_height / 2) / screen_height));
upscaled_framebuffer_surface_tv = RenderBackend_CreateSurface(screen_width * upscale_factor, screen_height * upscale_factor, true);
if (upscaled_framebuffer_surface_tv != NULL)
{
// Create upscaled framebuffer surface
size_t drc_width = 854;
size_t drc_height = 480;
size_t upscale_factor = MAX(1, MIN((drc_width + screen_width / 2) / screen_width, (drc_height + screen_height / 2) / screen_height));
upscaled_framebuffer_surface_drc = RenderBackend_CreateSurface(screen_width * upscale_factor, screen_height * upscale_factor, true);
if (upscaled_framebuffer_surface_drc != NULL)
{
// From what I can tell, there isn't a 'global context' in GX2: instead there are context objects.
// wut internally uses (and *switches to*) its own contexts, so we need to maintain one too,
@ -316,6 +361,20 @@ RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t scree
Backend_PrintError("Couldn't allocate memory for the GX2 context");
}
RenderBackend_FreeSurface(upscaled_framebuffer_surface_drc);
}
else
{
Backend_PrintError("Couldn't create the DRC upscaled framebuffer surface");
}
RenderBackend_FreeSurface(upscaled_framebuffer_surface_tv);
}
else
{
Backend_PrintError("Couldn't create the TV upscaled framebuffer surface");
}
RenderBackend_FreeSurface(framebuffer_surface);
}
else
@ -389,6 +448,26 @@ void RenderBackend_DrawScreen(void)
last_source_texture = NULL;
last_destination_texture = NULL;
RenderBackend_Rect source_rect;
source_rect.left = 0;
source_rect.top = 0;
source_rect.right = framebuffer_surface->texture.surface.width;
source_rect.bottom = framebuffer_surface->texture.surface.height;
RenderBackend_Rect destination_rect;
destination_rect.left = 0;
destination_rect.top = 0;
destination_rect.right = upscaled_framebuffer_surface_tv->texture.surface.width;
destination_rect.bottom = upscaled_framebuffer_surface_tv->texture.surface.height;
Blit(framebuffer_surface, &source_rect, upscaled_framebuffer_surface_tv, &destination_rect, false, &sampler_point);
destination_rect.right = upscaled_framebuffer_surface_drc->texture.surface.width;
destination_rect.bottom = upscaled_framebuffer_surface_drc->texture.surface.height;
Blit(framebuffer_surface, &source_rect, upscaled_framebuffer_surface_drc, &destination_rect, false, &sampler_point);
// Make sure the buffers aren't currently being used before we modify them
GX2DrawDone();
@ -445,8 +524,8 @@ void RenderBackend_DrawScreen(void)
GX2SetVertexUniformReg(shader_group_texture.vertexShader->uniformVars[1].offset, 4, (uint32_t*)plain_vec4);
// Bind a few things
GX2SetPixelSampler(&sampler_point, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelTexture(&framebuffer_surface->texture, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelSampler(&sampler_linear, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelTexture(&upscaled_framebuffer_surface_tv->texture, shader_group_texture.pixelShader->samplerVars[0].location);
GX2RSetAttributeBuffer(&vertex_buffer, 0, sizeof(Vertex), offsetof(Vertex, position));
GX2RSetAttributeBuffer(&vertex_buffer, 1, sizeof(Vertex), offsetof(Vertex, texture));
@ -475,8 +554,8 @@ void RenderBackend_DrawScreen(void)
GX2SetVertexUniformReg(shader_group_texture.vertexShader->uniformVars[1].offset, 4, (uint32_t*)plain_vec4);
// Bind a few things
GX2SetPixelSampler(&sampler_point, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelTexture(&framebuffer_surface->texture, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelSampler(&sampler_linear, shader_group_texture.pixelShader->samplerVars[0].location);
GX2SetPixelTexture(&upscaled_framebuffer_surface_drc->texture, shader_group_texture.pixelShader->samplerVars[0].location);
GX2RSetAttributeBuffer(&vertex_buffer, 0, sizeof(Vertex), offsetof(Vertex, position));
GX2RSetAttributeBuffer(&vertex_buffer, 1, sizeof(Vertex), offsetof(Vertex, texture));