Refactor Wii U renderer in preparation
This is in preparation for an upscaled-framebuffer system like the OpenGL backend has. I wonder if it's possible to just use a shader instead, and avoid the need for an upscaled framebuffer to make the linear filtering not look terrible.
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Clownacy
parent
385b7531ef
commit
30ec081d7b
1 changed files with 87 additions and 78 deletions
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@ -65,7 +65,8 @@ static WHBGfxShaderGroup shader_group_glyph;
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static GX2RBuffer vertex_buffer;
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static GX2Sampler sampler;
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static GX2Sampler sampler_point;
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static GX2Sampler sampler_linear;
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static RenderBackend_Surface *framebuffer_surface;
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@ -159,6 +160,83 @@ static void FlushVertexBuffer(void)
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current_vertex_buffer_slot = 0;
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}
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static void Blit(RenderBackend_Surface *source_surface, const RenderBackend_Rect *source_rect, RenderBackend_Surface *destination_surface, const RenderBackend_Rect *destination_rect, bool colour_key, GX2Sampler *sampler)
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{
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const RenderMode render_mode = (colour_key ? MODE_DRAW_SURFACE_WITH_TRANSPARENCY : MODE_DRAW_SURFACE);
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// Flush vertex data if a context-change is needed
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if (last_render_mode != render_mode || last_source_texture != &source_surface->texture || last_destination_texture != &destination_surface->texture)
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{
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FlushVertexBuffer();
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last_render_mode = render_mode;
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last_source_texture = &source_surface->texture;
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last_destination_texture = &destination_surface->texture;
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// Draw to the selected texture, instead of the screen
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GX2SetColorBuffer(&destination_surface->colour_buffer, GX2_RENDER_TARGET_0);
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GX2SetViewport(0.0f, 0.0f, (float)destination_surface->colour_buffer.surface.width, (float)destination_surface->colour_buffer.surface.height, 0.0f, 1.0f);
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GX2SetScissor(0, 0, destination_surface->colour_buffer.surface.width, destination_surface->colour_buffer.surface.height);
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// Select shader
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WHBGfxShaderGroup *shader = colour_key ? &shader_group_texture_colour_key : &shader_group_texture;
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// Bind it
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GX2SetFetchShader(&shader->fetchShader);
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GX2SetVertexShader(shader->vertexShader);
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GX2SetPixelShader(shader->pixelShader);
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// Set shader uniforms
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const float vertex_coordinate_transform[4] = {2.0f / destination_surface->texture.surface.width, -2.0f / destination_surface->texture.surface.height, 1.0f, 1.0f};
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GX2SetVertexUniformReg(shader_group_glyph.vertexShader->uniformVars[0].offset, 4, (uint32_t*)vertex_coordinate_transform);
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const float texture_coordinate_transform[4] = {1.0f / source_surface->texture.surface.width, 1.0f / source_surface->texture.surface.height, 1.0f, 1.0f};
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GX2SetVertexUniformReg(shader_group_glyph.vertexShader->uniformVars[1].offset, 4, (uint32_t*)texture_coordinate_transform);
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// Bind misc. data
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GX2SetPixelSampler(sampler, shader->pixelShader->samplerVars[0].location);
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GX2SetPixelTexture(&source_surface->texture, shader->pixelShader->samplerVars[0].location);
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// Disable blending
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GX2SetColorControl(GX2_LOGIC_OP_COPY, 0, FALSE, TRUE);
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}
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VertexBufferSlot *vertex_buffer_slot = GetVertexBufferSlot();
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if (vertex_buffer_slot != NULL)
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{
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// Set vertex position buffer
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const float vertex_left = destination_rect->left;
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const float vertex_top = destination_rect->top;
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const float vertex_right = destination_rect->right;
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const float vertex_bottom = destination_rect->bottom;
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vertex_buffer_slot->vertices[0].position.x = vertex_left;
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vertex_buffer_slot->vertices[0].position.y = vertex_top;
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vertex_buffer_slot->vertices[1].position.x = vertex_right;
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vertex_buffer_slot->vertices[1].position.y = vertex_top;
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vertex_buffer_slot->vertices[2].position.x = vertex_right;
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vertex_buffer_slot->vertices[2].position.y = vertex_bottom;
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vertex_buffer_slot->vertices[3].position.x = vertex_left;
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vertex_buffer_slot->vertices[3].position.y = vertex_bottom;
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const float texture_left = source_rect->left;
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const float texture_top = source_rect->top;
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const float texture_right = source_rect->right;
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const float texture_bottom = source_rect->bottom;
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// Set texture coordinate buffer
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vertex_buffer_slot->vertices[0].texture.x = texture_left;
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vertex_buffer_slot->vertices[0].texture.y = texture_top;
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vertex_buffer_slot->vertices[1].texture.x = texture_right;
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vertex_buffer_slot->vertices[1].texture.y = texture_top;
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vertex_buffer_slot->vertices[2].texture.x = texture_right;
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vertex_buffer_slot->vertices[2].texture.y = texture_bottom;
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vertex_buffer_slot->vertices[3].texture.x = texture_left;
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vertex_buffer_slot->vertices[3].texture.y = texture_bottom;
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}
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}
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RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t screen_width, size_t screen_height, bool fullscreen)
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{
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(void)window_title;
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@ -195,8 +273,9 @@ RenderBackend_Surface* RenderBackend_Init(const char *window_title, size_t scree
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WHBGfxInitShaderAttribute(&shader_group_glyph, "input_texture_coordinates", 1, 0, GX2_ATTRIB_FORMAT_FLOAT_32_32);
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WHBGfxInitFetchShader(&shader_group_glyph);
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// Initialise sampler
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GX2InitSampler(&sampler, GX2_TEX_CLAMP_MODE_CLAMP, GX2_TEX_XY_FILTER_MODE_LINEAR);
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// Initialise samplers
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GX2InitSampler(&sampler_point, GX2_TEX_CLAMP_MODE_CLAMP, GX2_TEX_XY_FILTER_MODE_POINT);
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GX2InitSampler(&sampler_linear, GX2_TEX_CLAMP_MODE_CLAMP, GX2_TEX_XY_FILTER_MODE_LINEAR);
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// Initialise vertex buffer
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vertex_buffer.flags = (GX2RResourceFlags)(GX2R_RESOURCE_BIND_VERTEX_BUFFER |
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@ -366,7 +445,7 @@ void RenderBackend_DrawScreen(void)
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GX2SetVertexUniformReg(shader_group_texture.vertexShader->uniformVars[1].offset, 4, (uint32_t*)plain_vec4);
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// Bind a few things
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GX2SetPixelSampler(&sampler, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2SetPixelSampler(&sampler_point, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2SetPixelTexture(&framebuffer_surface->texture, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2RSetAttributeBuffer(&vertex_buffer, 0, sizeof(Vertex), offsetof(Vertex, position));
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GX2RSetAttributeBuffer(&vertex_buffer, 1, sizeof(Vertex), offsetof(Vertex, texture));
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@ -396,7 +475,7 @@ void RenderBackend_DrawScreen(void)
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GX2SetVertexUniformReg(shader_group_texture.vertexShader->uniformVars[1].offset, 4, (uint32_t*)plain_vec4);
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// Bind a few things
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GX2SetPixelSampler(&sampler, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2SetPixelSampler(&sampler_point, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2SetPixelTexture(&framebuffer_surface->texture, shader_group_texture.pixelShader->samplerVars[0].location);
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GX2RSetAttributeBuffer(&vertex_buffer, 0, sizeof(Vertex), offsetof(Vertex, position));
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GX2RSetAttributeBuffer(&vertex_buffer, 1, sizeof(Vertex), offsetof(Vertex, texture));
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@ -541,79 +620,9 @@ void RenderBackend_UploadSurface(RenderBackend_Surface *surface, const unsigned
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void RenderBackend_Blit(RenderBackend_Surface *source_surface, const RenderBackend_Rect *rect, RenderBackend_Surface *destination_surface, long x, long y, bool colour_key)
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{
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const RenderMode render_mode = (colour_key ? MODE_DRAW_SURFACE_WITH_TRANSPARENCY : MODE_DRAW_SURFACE);
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RenderBackend_Rect destination_rect = {x, y, x + (rect->right - rect->left), y + (rect->bottom - rect->top)};
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// Flush vertex data if a context-change is needed
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if (last_render_mode != render_mode || last_source_texture != &source_surface->texture || last_destination_texture != &destination_surface->texture)
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{
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FlushVertexBuffer();
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last_render_mode = render_mode;
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last_source_texture = &source_surface->texture;
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last_destination_texture = &destination_surface->texture;
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// Draw to the selected texture, instead of the screen
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GX2SetColorBuffer(&destination_surface->colour_buffer, GX2_RENDER_TARGET_0);
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GX2SetViewport(0.0f, 0.0f, (float)destination_surface->colour_buffer.surface.width, (float)destination_surface->colour_buffer.surface.height, 0.0f, 1.0f);
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GX2SetScissor(0, 0, destination_surface->colour_buffer.surface.width, destination_surface->colour_buffer.surface.height);
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// Select shader
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WHBGfxShaderGroup *shader = colour_key ? &shader_group_texture_colour_key : &shader_group_texture;
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// Bind it
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GX2SetFetchShader(&shader->fetchShader);
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GX2SetVertexShader(shader->vertexShader);
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GX2SetPixelShader(shader->pixelShader);
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// Set shader uniforms
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const float vertex_coordinate_transform[4] = {2.0f / destination_surface->texture.surface.width, -2.0f / destination_surface->texture.surface.height, 1.0f, 1.0f};
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GX2SetVertexUniformReg(shader_group_glyph.vertexShader->uniformVars[0].offset, 4, (uint32_t*)vertex_coordinate_transform);
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const float texture_coordinate_transform[4] = {1.0f / source_surface->texture.surface.width, 1.0f / source_surface->texture.surface.height, 1.0f, 1.0f};
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GX2SetVertexUniformReg(shader_group_glyph.vertexShader->uniformVars[1].offset, 4, (uint32_t*)texture_coordinate_transform);
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// Bind misc. data
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GX2SetPixelSampler(&sampler, shader->pixelShader->samplerVars[0].location);
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GX2SetPixelTexture(&source_surface->texture, shader->pixelShader->samplerVars[0].location);
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// Disable blending
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GX2SetColorControl(GX2_LOGIC_OP_COPY, 0, FALSE, TRUE);
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}
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VertexBufferSlot *vertex_buffer_slot = GetVertexBufferSlot();
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if (vertex_buffer_slot != NULL)
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{
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// Set vertex position buffer
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const float vertex_left = x;
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const float vertex_top = y;
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const float vertex_right = x + (rect->right - rect->left);
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const float vertex_bottom = y + (rect->bottom - rect->top);
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vertex_buffer_slot->vertices[0].position.x = vertex_left;
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vertex_buffer_slot->vertices[0].position.y = vertex_top;
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vertex_buffer_slot->vertices[1].position.x = vertex_right;
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vertex_buffer_slot->vertices[1].position.y = vertex_top;
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vertex_buffer_slot->vertices[2].position.x = vertex_right;
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vertex_buffer_slot->vertices[2].position.y = vertex_bottom;
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vertex_buffer_slot->vertices[3].position.x = vertex_left;
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vertex_buffer_slot->vertices[3].position.y = vertex_bottom;
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const float texture_left = rect->left;
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const float texture_top = rect->top;
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const float texture_right = rect->right;
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const float texture_bottom = rect->bottom;
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// Set texture coordinate buffer
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vertex_buffer_slot->vertices[0].texture.x = texture_left;
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vertex_buffer_slot->vertices[0].texture.y = texture_top;
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vertex_buffer_slot->vertices[1].texture.x = texture_right;
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vertex_buffer_slot->vertices[1].texture.y = texture_top;
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vertex_buffer_slot->vertices[2].texture.x = texture_right;
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vertex_buffer_slot->vertices[2].texture.y = texture_bottom;
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vertex_buffer_slot->vertices[3].texture.x = texture_left;
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vertex_buffer_slot->vertices[3].texture.y = texture_bottom;
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}
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Blit(source_surface, rect, destination_surface, &destination_rect, colour_key, &sampler_point);
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}
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void RenderBackend_ColourFill(RenderBackend_Surface *surface, const RenderBackend_Rect *rect, unsigned char red, unsigned char green, unsigned char blue)
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@ -777,7 +786,7 @@ void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBa
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GX2SetPixelUniformReg(shader_group_glyph.pixelShader->uniformVars[0].offset, 4, (uint32_t*)&uniform_colours);
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// Bind misc. data
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GX2SetPixelSampler(&sampler, shader_group_glyph.pixelShader->samplerVars[0].location);
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GX2SetPixelSampler(&sampler_point, shader_group_glyph.pixelShader->samplerVars[0].location);
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GX2SetPixelTexture(&atlas->texture, shader_group_glyph.pixelShader->samplerVars[0].location);
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// Enable blending
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