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cleanup rasterfont

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This commit is contained in:
degasus 2012-12-28 11:46:00 +01:00
parent 7d93834cd8
commit 82b33471ae
1 changed files with 40 additions and 34 deletions
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74
Source/Plugins/Plugin_VideoOGL/Src/RasterFont.cpp
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@ -129,21 +129,24 @@ const u8 rasters[char_count][char_height] = {
};
static const char *s_vertexShaderSrc =
"attribute vec2 vertexPosition;\n"
"attribute vec2 texturePosition;\n"
"varying vec2 tpos;\n"
"#version 130\n"
"uniform vec2 charSize;\n"
"in vec2 vertexPosition;\n"
"in vec2 texturePosition;\n"
"out vec2 tpos;\n"
"void main(void) {\n"
" gl_Position = vec4(vertexPosition,0,1);\n"
" tpos = texturePosition;\n"
" tpos = texturePosition * charSize;\n"
"}\n";
static const char *s_fragmentShaderSrc =
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect textureSampler;\n"
"#version 130\n"
"uniform sampler2D samp0;\n"
"uniform vec4 color;\n"
"varying vec2 tpos;\n"
"in vec2 tpos;\n"
"out vec4 ocol0;\n"
"void main(void) {\n"
" gl_FragColor = texture2DRect(textureSampler,tpos) * color;\n"
" ocol0 = texture2D(samp0,tpos) * color;\n"
"}\n";
@ -154,7 +157,7 @@ RasterFont::RasterFont()
{
// generate the texture
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_RECTANGLE, texture);
glBindTexture(GL_TEXTURE_2D, texture);
u32* texture_data = new u32[char_width*char_count*char_height];
for(u32 y=0; y<char_height; y++) {
for(u32 c=0; c<char_count; c++) {
@ -164,7 +167,9 @@ RasterFont::RasterFont()
}
}
}
glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA, char_width*char_count, char_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture_data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, char_width*char_count, char_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, texture_data);
delete [] texture_data;
// generate shader
@ -174,9 +179,10 @@ RasterFont::RasterFont()
GLuint shader_program = ProgramShaderCache::GetCurrentProgram();
// bound uniforms
glUniform1i(glGetUniformLocation(shader_program,"textureSampler"), 0); // GL_TEXTURE0
glUniform1i(glGetUniformLocation(shader_program,"samp0"), 0); // GL_TEXTURE0
glUniform2f(glGetUniformLocation(shader_program,"charSize"), 1.0f / GLfloat(char_count), 1.0f);
uniform_color_id = glGetUniformLocation(shader_program,"color");
glUniform4f(uniform_color_id, 1, 1, 1, 1);
glUniform4f(uniform_color_id, 1.0f, 1.0f, 1.0f, 1.0f);
cached_color = -1;
// generate VBO & VAO
@ -205,7 +211,7 @@ RasterFont::~RasterFont()
void RasterFont::printMultilineText(const char *text, double start_x, double start_y, double z, int bbWidth, int bbHeight, u32 color)
{
int length = (int)strlen(text);
size_t length = strlen(text);
if (!length)
return; // nothing to do
@ -215,15 +221,15 @@ void RasterFont::printMultilineText(const char *text, double start_x, double sta
GLfloat *vertices = (GLfloat*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
int usage = 0;
GLfloat delta_x = 2*char_width/GLfloat(bbWidth);
GLfloat delta_y = 2*char_height/GLfloat(bbHeight);
GLfloat border_x = 1*2/GLfloat(bbWidth);
GLfloat border_y = 2*2/GLfloat(bbHeight);
GLfloat delta_x = GLfloat(2*char_width)/GLfloat(bbWidth);
GLfloat delta_y = GLfloat(2*char_height)/GLfloat(bbHeight);
GLfloat border_x = 2.0/GLfloat(bbWidth);
GLfloat border_y = 4.0/GLfloat(bbHeight);
GLfloat x = start_x;
GLfloat y = start_y;
GLfloat x = GLfloat(start_x);
GLfloat y = GLfloat(start_y);
for(int i=0; i<length; i++) {
for(size_t i=0; i<length; i++) {
u8 c = text[i];
if(c == '\n') {
@ -242,33 +248,33 @@ void RasterFont::printMultilineText(const char *text, double start_x, double sta
vertices[usage++] = x;
vertices[usage++] = y;
vertices[usage++] = (c-char_offset)*char_width;
vertices[usage++] = 0;
vertices[usage++] = GLfloat(c-char_offset);
vertices[usage++] = 0.0f;
vertices[usage++] = x+delta_x;
vertices[usage++] = y;
vertices[usage++] = (c-char_offset+1)*char_width;
vertices[usage++] = 0;
vertices[usage++] = GLfloat(c-char_offset+1);
vertices[usage++] = 0.0f;
vertices[usage++] = x+delta_x;
vertices[usage++] = y+delta_y;
vertices[usage++] = (c-char_offset+1)*char_width;
vertices[usage++] = char_height;
vertices[usage++] = GLfloat(c-char_offset+1);
vertices[usage++] = 1.0f;
vertices[usage++] = x;
vertices[usage++] = y;
vertices[usage++] = (c-char_offset)*char_width;
vertices[usage++] = 0;
vertices[usage++] = GLfloat(c-char_offset);
vertices[usage++] = 0.0f;
vertices[usage++] = x+delta_x;
vertices[usage++] = y+delta_y;
vertices[usage++] = (c-char_offset+1)*char_width;
vertices[usage++] = char_height;
vertices[usage++] = GLfloat(c-char_offset+1);
vertices[usage++] = 1.0f;
vertices[usage++] = x;
vertices[usage++] = y+delta_y;
vertices[usage++] = (c-char_offset)*char_width;
vertices[usage++] = char_height;
vertices[usage++] = GLfloat(c-char_offset);
vertices[usage++] = 1.0f;
x += delta_x + border_x;
}
@ -280,12 +286,12 @@ void RasterFont::printMultilineText(const char *text, double start_x, double sta
ProgramShaderCache::SetBothShaders(s_fragmentShader.glprogid, s_vertexShader.glprogid);
if(color != cached_color) {
glUniform4f(uniform_color_id, ((color>>16)&0xff)/255.f,((color>>8)&0xff)/255.f,((color>>0)&0xff)/255.f,((color>>24)&0xff)/255.f);
glUniform4f(uniform_color_id, GLfloat((color>>16)&0xff)/255.f,GLfloat((color>>8)&0xff)/255.f,GLfloat((color>>0)&0xff)/255.f,GLfloat((color>>24)&0xff)/255.f);
cached_color = color;
}
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_RECTANGLE, texture);
glBindTexture(GL_TEXTURE_2D, texture);
glDrawArrays(GL_TRIANGLES, 0, usage/4);
// TODO: this after merging with graphic_update