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finalize the GL/software switch

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This commit is contained in:
Arisotura 2019-05-25 19:47:19 +02:00
parent 70a3243714
commit 956c2c5d86
2 changed files with 57 additions and 16 deletions
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46
src/libui_sdl/main.cpp
View File

@ -109,6 +109,7 @@ bool ScreenDrawInited = false;
uiDrawBitmap* ScreenBitmap[2] = {NULL,NULL};
GLuint GL_ScreenShader[3];
GLuint GL_ScreenShaderAccel[3];
struct
{
float uScreenSize[2];
@ -169,29 +170,45 @@ void RecreateMainWindow(bool opengl);
bool GLScreen_InitShader(GLuint* shader, const char* fs)
{
if (!OpenGL_BuildShaderProgram(kScreenVS, fs, shader, "ScreenShader"))
return false;
GLuint uni_id;
uni_id = glGetUniformBlockIndex(shader[2], "uConfig");
glUniformBlockBinding(shader[2], uni_id, 16);
glUseProgram(shader[2]);
uni_id = glGetUniformLocation(shader[2], "ScreenTex");
glUniform1i(uni_id, 0);
uni_id = glGetUniformLocation(shader[2], "_3DTex");
glUniform1i(uni_id, 1);
glBindAttribLocation(shader[2], 0, "vPosition");
glBindAttribLocation(shader[2], 1, "vTexcoord");
glBindFragDataLocation(shader[2], 0, "oColor");
return true;
}
bool GLScreen_Init()
{
if (!OpenGL_Init())
return false;
if (!OpenGL_BuildShaderProgram(kScreenVS, kScreenFS, GL_ScreenShader, "ScreenShader"))
if (!GLScreen_InitShader(GL_ScreenShader, kScreenFS))
return false;
if (!GLScreen_InitShader(GL_ScreenShaderAccel, kScreenFS_Accel))
return false;
GLuint uni_id;
memset(&GL_ShaderConfig, 0, sizeof(GL_ShaderConfig));
glGenBuffers(1, &GL_ShaderConfigUBO);
glBindBuffer(GL_UNIFORM_BUFFER, GL_ShaderConfigUBO);
glBufferData(GL_UNIFORM_BUFFER, sizeof(GL_ShaderConfig), &GL_ShaderConfig, GL_STATIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, 16, GL_ShaderConfigUBO);
uni_id = glGetUniformBlockIndex(GL_ScreenShader[2], "uConfig");
glUniformBlockBinding(GL_ScreenShader[2], uni_id, 16);
glUseProgram(GL_ScreenShader[2]);
uni_id = glGetUniformLocation(GL_ScreenShader[2], "ScreenTex");
glUniform1i(uni_id, 0);
uni_id = glGetUniformLocation(GL_ScreenShader[2], "_3DTex");
glUniform1i(uni_id, 1);
glGenBuffers(1, &GL_ScreenVertexBufferID);
glBindBuffer(GL_ARRAY_BUFFER, GL_ScreenVertexBufferID);
@ -204,11 +221,6 @@ bool GLScreen_Init()
glEnableVertexAttribArray(1); // texcoord
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4*4, (void*)(2*4));
glBindAttribLocation(GL_ScreenShader[2], 0, "vPosition");
glBindAttribLocation(GL_ScreenShader[2], 1, "vTexcoord");
glBindFragDataLocation(GL_ScreenShader[2], 0, "oColor");
// TODO: consider reallocating the texture when changing screen sizes
glGenTextures(1, &GL_ScreenTexture);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, GL_ScreenTexture);
@ -231,6 +243,7 @@ void GLScreen_DeInit()
glDeleteBuffers(1, &GL_ScreenVertexBufferID);
OpenGL_DeleteShaderProgram(GL_ScreenShader);
OpenGL_DeleteShaderProgram(GL_ScreenShaderAccel);
}
void GLScreen_DrawScreen()
@ -365,7 +378,10 @@ void GLScreen_DrawScreen()
glViewport(0, 0, WindowWidth, WindowHeight);
if (GPU3D::Renderer == 0)
OpenGL_UseShaderProgram(GL_ScreenShader);
else
OpenGL_UseShaderProgram(GL_ScreenShaderAccel);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearColor(0, 1, 0, 1);

25
src/libui_sdl/main_shaders.h
View File

@ -55,6 +55,31 @@ layout(std140) uniform uConfig
uint uFilterMode;
};
uniform usampler2D ScreenTex;
smooth in vec2 fTexcoord;
out vec4 oColor;
void main()
{
ivec4 pixel = ivec4(texelFetch(ScreenTex, ivec2(fTexcoord), 0));
// TODO: filters
oColor = vec4(vec3(pixel.bgr) / 255.0, 1.0);
}
)";
const char* kScreenFS_Accel = R"(#version 140
layout(std140) uniform uConfig
{
vec2 uScreenSize;
uint u3DScale;
uint uFilterMode;
};
uniform usampler2D ScreenTex;
uniform sampler2D _3DTex;