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proto.cpp
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proto.cpp
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#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#pragma warning(push)
#pragma warning(disable: 4668)
#include <Windows.h>
#pragma warning(pop)
#elif __APPLE__
#include <mach/mach_time.h>
#elif __linux__
#include <time.h>
#endif
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include "glcorearb.h"
#include <cstdio>
#include <cstring>
#include <vector>
#include <set>
#include <algorithm>
#include <sstream>
#include "client.h"
#include "gl.cpp"
bool g_printShaders = false;
bool g_printGLDiagnostics = false;
size_t g_quitFrame = 0;
bool g_noRetina = false;
struct FSQuad
{
void setup();
void draw();
void cleanup();
GLuint m_vao;
};
struct QuadIndexes
{
void setup();
void cleanup();
void before();
void after();
GLuint m_ibuf;
};
struct FSTexturePresenter
{
void setup(FSQuad *quad);
void draw(GLuint tex, GLenum srcFactor, GLenum dstFactor,
const float2 &pre, const float2 &post,
float s, float a,
float vpW, float vpH,
float rtW, float rtH);
void draw(GLuint tex, GLenum srcFactor, GLenum dstFactor);
void draw(GLuint tex,
GLenum srcFactorC, GLenum dstFactorC,
GLenum srcFactorA, GLenum dstFactorA);
void cleanup();
FSQuad *m_quad;
GLuint m_fullscreenProgram;
GLuint m_simpleFullscreenProgram;
GLint m_preTranslationLoc;
GLint m_postTranslationLoc;
GLint m_scaleLoc;
GLint m_rotationLoc;
GLint m_vpSizeLoc;
GLint m_rtSizeLoc;
};
struct StrokeImageTech
{
void setup(FSQuad *quad);
void draw(GLuint tex, const basis2r &basis,
float alpha, const float2 &scale);
void cleanup();
FSQuad *m_quad;
GLuint m_fullscreenProgram;
GLint m_posLoc;
GLint m_axesLoc;
GLint m_scaleLoc;
GLint m_alphaLoc;
};
struct FSGrid
{
void setup(FSQuad *quad);
void draw(const color3f &bgcolor, const color3f &fgcolor, const float2 &scale);
void cleanup();
GLuint m_fullscreenProgram;
GLint m_bgColorLoc;
GLint m_fgColorLoc;
GLint m_scaleLoc;
FSQuad *m_quad;
};
struct RenderTarget
{
void setup(u32 width, u32 height);
void cleanup();
void begin_receive();
void end_receive();
void store_image(u8 *storage);
GLuint m_fbo;
GLuint m_depth_rbo;
GLuint m_tex;
u32 m_width;
u32 m_height;
};
struct RenderTargetMS
{
void setup(u32 width, u32 height);
void cleanup();
void begin_receive();
void end_receive();
void resolve();
GLuint m_fbo;
GLuint m_depth_rbo;
GLuint m_tex;
u32 m_width;
u32 m_height;
};
struct MarkerBatchTech
{
void setup();
void cleanup();
void draw(kernel_services::MeshID mi,
u32 offset, u32 count,
const float2 &scale);
GLuint m_program;
GLint m_scaleLoc;
};
struct UIPresenter
{
void setup();
void cleanup();
void draw(kernel_services::TexID ti, kernel_services::MeshID mi,
u32 offset, u32 count, float vpW, float vpH);
GLuint m_program;
GLint m_vpSizeLoc;
};
struct Mesh
{
GLuint vao;
GLuint ibuf;
GLuint vbuf;
u32 vsize;
u32 isize;
bool quad_mesh;
};
// TODO: this runs always up
u32 next_mesh_idx = 0;
const u32 MAXMESHCNT = 20;
Mesh meshes[MAXMESHCNT];
struct Slot
{
const char *name;
GLuint loc;
GLuint dim;
GLuint size;
GLenum type;
GLboolean norm;
};
struct VertexLayout
{
virtual ~VertexLayout() {}
virtual size_t count() const = 0;
virtual GLsizei offset_(size_t) const = 0;
virtual const Slot& slot(size_t) const = 0;
GLsizei total_size() const
{ return offset_(count()); }
GLvoid* offset(size_t si) const
{ return make_gl_offset(offset_(si)); }
};
template <size_t N>
struct VertexLayoutN : public VertexLayout
{
Slot slots[N];
VertexLayoutN(std::initializer_list<Slot> in)
{
std::copy(in.begin(), in.end(), slots);
}
const Slot& slot(size_t i) const override
{ return slots[i]; }
size_t count() const override
{ return N; }
GLsizei offset_(size_t si) const override
{
GLsizei result = 0;
for (size_t i = 0; i < si; ++i)
{
result += slots[i].dim * slots[i].size;
}
return result;
}
};
VertexLayoutN<3> ui_vertex_layout =
{
{"msPos", 0, 2, 4, GL_FLOAT, false},
{"uv", 1, 2, 4, GL_FLOAT, false},
{"color", 2, 4, 1, GL_UNSIGNED_BYTE, true}
};
VertexLayoutN<3> stroke_vertex_layout =
{
{"msPosition", 0, 3, 4, GL_FLOAT, false},
{"uve", 1, 3, 4, GL_FLOAT, false},
{"color", 2, 4, 4, GL_FLOAT, false}
};
QuadIndexes quad_indexes;
u32 capture_data_width_px = 0;
u32 capture_data_height_px = 0;
std::vector<u8> capture_data;
void normalize_capture_data()
{
u8 *start = capture_data.data();
u8 *finish = start + capture_data.size();
u8 *pixel = start;
while (pixel != finish)
{
// NOTE: alpha channel contains amount of bg to add
// 1-that is alpha value of the drawing
u8 transparency = pixel[3];
u8 opacity = 255 - transparency;
if (opacity > 0)
{
// Unpremultiply
float alpha = opacity / 255.0f;
pixel[0] = static_cast<u8>((pixel[0] / 255.0f) / alpha * 255.0f);
pixel[1] = static_cast<u8>((pixel[1] / 255.0f) / alpha * 255.0f);
pixel[2] = static_cast<u8>((pixel[2] / 255.0f) / alpha * 255.0f);
}
pixel[3] = opacity;
pixel += 4;
}
// Flip
const size_t rowpitch = capture_data_width_px * 4;
std::vector<u8> swapbuffer(rowpitch);
u8 *swaprow = swapbuffer.data();
for (size_t row = 0; row < capture_data_height_px / 2; ++row)
{
u8 *thisrow = capture_data.data() + row * rowpitch;
u8 *thatrow = capture_data.data() + (capture_data_height_px - row - 1) * rowpitch;
::memcpy(swaprow, thisrow, rowpitch);
::memcpy(thisrow, thatrow, rowpitch);
::memcpy(thatrow, swaprow, rowpitch);
}
// Crop
// TODO:
}
kernel_services::MeshID create_mesh_common(const VertexLayout& layout,
u32 initialVCount,
u32 initialICount,
bool quad_mesh)
{
Mesh &mesh = meshes[next_mesh_idx];
u32 vertexSize = static_cast<u32>(layout.total_size());
mesh.vsize = vertexSize;
mesh.isize = 2;
mesh.quad_mesh = quad_mesh;
glGenVertexArrays(1, &mesh.vao);
// vao setup
glBindVertexArray(mesh.vao);
glGenBuffers(1, &mesh.vbuf);
glBindBuffer(GL_ARRAY_BUFFER, mesh.vbuf);
glBufferData(GL_ARRAY_BUFFER,
static_cast<GLsizeiptr>(initialVCount * vertexSize),
nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mesh.vbuf);
for (size_t i = 0; i < layout.count(); ++i)
{
glVertexAttribPointer(layout.slot(i).loc,
static_cast<GLint>(layout.slot(i).dim),
layout.slot(i).type,
layout.slot(i).norm,
layout.total_size(),
layout.offset(i));
}
glBindBuffer(GL_ARRAY_BUFFER, 0);
for (size_t i = 0; i < layout.count(); ++i)
{
glEnableVertexAttribArray(layout.slot(i).loc);
}
glBindVertexArray(0);
if (mesh.quad_mesh)
{
mesh.ibuf = quad_indexes.m_ibuf;
}
else
{
glGenBuffers(1, &mesh.ibuf);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh.ibuf);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
static_cast<GLsizeiptr>(initialICount * mesh.isize),
nullptr, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
++next_mesh_idx;
return next_mesh_idx - 1;
}
void kernel_services::update_mesh_vb(kernel_services::MeshID mi,
const void *vtxdata, u32 vtxcnt)
{
glBindBuffer(GL_ARRAY_BUFFER, meshes[mi].vbuf);
glBufferData(GL_ARRAY_BUFFER, vtxcnt * meshes[mi].vsize,
vtxdata, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void kernel_services::update_mesh(kernel_services::MeshID mi,
const void *vtxdata, u32 vtxcnt,
const u16 *idxdata, u32 idxcnt)
{
update_mesh_vb(mi, vtxdata, vtxcnt);
if (!meshes[mi].quad_mesh)
{
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, meshes[mi].ibuf);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, idxcnt * meshes[mi].isize,
idxdata, GL_DYNAMIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}
}
kernel_services::MeshID
kernel_services::create_quad_mesh(const VertexLayout& layout,
u32 initialVCount)
{
return create_mesh_common(layout, initialVCount, 0, true);
}
kernel_services::MeshID
kernel_services::create_mesh(const VertexLayout& layout,
u32 initialVCount,
u32 initialICount)
{
return create_mesh_common(layout, initialVCount, initialICount, false);
}
void kernel_services::delete_mesh(kernel_services::MeshID mi)
{
glDeleteVertexArrays(1, &meshes[mi].vao);
glDeleteBuffers(1, &meshes[mi].vbuf);
if (!meshes[mi].quad_mesh)
{
glDeleteBuffers(1, &meshes[mi].ibuf);
}
}
struct Texture
{
bool active;
GLuint glid;
GLuint width;
GLuint height;
GLenum format;
Texture() : active(false), glid(0), width(0), height(0), format(GL_RGBA) {}
};
const u32 MAXTEXCNT = 10;
Texture textures[MAXTEXCNT];
void create_texture_unsafe(u32 idx, u32 w, u32 h, u32 comp)
{
Texture &tex = textures[idx];
tex.active = true;
tex.width = w;
tex.height = h;
tex.format = static_cast<GLenum>(comp == 1 ? GL_RED : GL_RGBA);
glGenTextures(1, &tex.glid);
glBindTexture(GL_TEXTURE_2D, tex.glid);
glTexImage2D(GL_TEXTURE_2D, 0, static_cast<GLint>(tex.format),
static_cast<GLsizei>(w), static_cast<GLsizei>(h), 0,
tex.format, GL_UNSIGNED_BYTE, nullptr);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, 0);
}
kernel_services::TexID kernel_services::create_texture(u32 w, u32 h, u32 comp)
{
u32 next_texture_idx = 0;
for (; next_texture_idx < MAXTEXCNT; ++next_texture_idx)
{
if (!textures[next_texture_idx].active)
break;
}
if (next_texture_idx < MAXTEXCNT)
{
create_texture_unsafe(next_texture_idx, w, h, comp);
return next_texture_idx;
}
else
{
return kernel_services::default_texid;
}
}
void update_texture_unsafe(kernel_services::TexID ti, const u8 *pixels)
{
glBindTexture(GL_TEXTURE_2D, textures[ti].glid);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0,
static_cast<GLsizei>(textures[ti].width),
static_cast<GLsizei>(textures[ti].height),
textures[ti].format, GL_UNSIGNED_BYTE, pixels);
glBindTexture(GL_TEXTURE_2D, 0);
}
// TODO: this is alpha only
void kernel_services::update_texture(kernel_services::TexID ti, const u8 *pixels)
{
if (ti != kernel_services::default_texid)
{
update_texture_unsafe(ti, pixels);
}
else
{
::printf("warning: attempt to update contents of default texture\n");
}
}
void delete_texture_unsafe(kernel_services::TexID ti)
{
glDeleteTextures(1, &textures[ti].glid);
textures[ti] = Texture();
}
void kernel_services::delete_texture(kernel_services::TexID ti)
{
if (ti < MAXTEXCNT)
{
// NOTE: do not delete default texture
if (ti != kernel_services::default_texid)
{
delete_texture_unsafe(ti);
}
}
else
{
::printf("warning: attempt to delete default texture\n");
}
}
const u8 *kernel_services::get_capture_data(u32 &w, u32 &h)
{
w = capture_data_width_px;
h = capture_data_height_px;
return capture_data.data();
}
bool scroll_updated = false;
float scroll_y = 0.0f;
float cfg_fixed_scroll_step = 0.1f;
void scroll_callback(GLFWwindow *, double, double yscroll)
{
scroll_updated = true;
if (yscroll > 0.0)
scroll_y += cfg_fixed_scroll_step;
else if (yscroll < 0.0)
scroll_y -= cfg_fixed_scroll_step;
}
#ifdef _WIN32
u64 get_platform_counter()
{
LARGE_INTEGER v;
QueryPerformanceCounter(&v);
return static_cast<u64>(v.QuadPart);
}
double get_platform_counter_freq()
{
LARGE_INTEGER f;
QueryPerformanceFrequency(&f);
return f.QuadPart / 1000.0;
}
#elif __APPLE__
u64 get_platform_counter()
{
return mach_absolute_time();
}
double get_platform_counter_freq()
{
mach_timebase_info_data_t time_info;
mach_timebase_info(&time_info);
return time_info.numer / time_info.denom * 1e6;
}
#elif __linux__
u64 get_platform_counter()
{
timespec cnt;
clock_gettime(CLOCK_MONOTONIC_RAW, &cnt);
::printf("COUNTER: %ldsec %ldnsec", cnt.tv_sec, cnt.tv_nsec);
}
double get_platform_counter_freq()
{
timespec res;
clock_getres(CLOCK_MONOTONIC_RAW, &res);
::printf("RESOLUTION: %ldsec %ldnsec", res.tv_sec, res.tv_nsec);
}
#endif
class signal_change_detector
{
public:
signal_change_detector() : previous_value(false), current_value(false) {}
void feed(bool value)
{
previous_value = current_value;
current_value = value;
}
bool is_rising_edge() const
{
return current_value && !previous_value;
}
private:
bool previous_value;
bool current_value;
};
struct Pipeline
{
FSQuad quad;
FSTexturePresenter fs;
StrokeImageTech si;
FSGrid grid;
MarkerBatchTech markerTech;
UIPresenter uirender;
RenderTarget belowLayersRT;
RenderTarget aboveLayersRT;
RenderTarget currentLayerRT;
RenderTarget tempRT;
RenderTargetMS tempRTMS;
// Make layer that contain premult color and alpha serve as amount of bg contain default correct values.
void clearRT(RenderTarget &rt)
{
rt.begin_receive();
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
rt.end_receive();
}
void setup(u32 w, u32 h)
{
quad.setup();
fs.setup(&quad);
si.setup(&quad);
grid.setup(&quad);
markerTech.setup();
uirender.setup();
belowLayersRT.setup(w, h);
aboveLayersRT.setup(w, h);
currentLayerRT.setup(w, h);
tempRT.setup(w, h);
tempRTMS.setup(w, h);
clearRT(belowLayersRT);
clearRT(aboveLayersRT);
}
void cleanup()
{
tempRTMS.cleanup();
tempRT.cleanup();
currentLayerRT.cleanup();
aboveLayersRT.cleanup();
belowLayersRT.cleanup();
uirender.cleanup();
markerTech.cleanup();
grid.cleanup();
si.cleanup();
fs.cleanup();
quad.cleanup();
}
struct FrameInput
{
const StrokesDrawcall *strokesDCs;
const ImageDrawcall *imageDCs;
bool multisample_on;
float2 in2rt;
float2 in2vp;
};
// build layerRT with everything assigned to a given layer
void build_layer(RenderTarget &rt, const LayerRecipe &recipe, FrameInput &fi)
{
if (fi.multisample_on)
{
tempRTMS.begin_receive();
}
else
{
rt.begin_receive();
}
glClearColor(0.0, 0.0, 0.0, 1.0);
glClearDepth(0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
for (u32 j = 0; j < recipe.items.size(); ++j)
{
const auto &it = recipe.items[j];
if (it.type == LayerRecipe::ItemSpec::STROKEBATCH)
{
const auto &dc = fi.strokesDCs[it.index];
markerTech.draw(dc.mesh, dc.offset, dc.count, fi.in2rt);
}
else if (it.type == LayerRecipe::ItemSpec::IMAGE)
{
const auto &dc = fi.imageDCs[it.index];
si.draw(textures[dc.texture].glid,
dc.basis, 1.0f, fi.in2rt);
}
}
if (fi.multisample_on)
{
tempRTMS.end_receive();
}
else
{
rt.end_receive();
}
if (fi.multisample_on)
{
rt.begin_receive();
tempRTMS.resolve();
// clear rt's depth
// NOTE: each rt has its own depth
glClearDepth(0.0);
glClear(GL_DEPTH_BUFFER_BIT);
rt.end_receive();
}
}
void compose_layers(RenderTarget &composedRT, const std::vector<LayerRecipe> &layerRcps,
FrameInput &fi)
{
composedRT.begin_receive();
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
composedRT.end_receive();
for (u32 i = 0; i < layerRcps.size(); ++i)
{
build_layer(tempRT, layerRcps[i], fi);
composedRT.begin_receive();
fs.draw(tempRT.m_tex,
GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA);
composedRT.end_receive();
}
}
void make_frame(const input_data &input, const output_data &output,
bool gamma_on, bool multisample_on,
std::string &debugstr)
{
const RenderRecipe &recipe = *output.recipe;
FrameInput fi;
fi.strokesDCs = recipe.strokeDCs.data();
fi.imageDCs = recipe.imageDCs.data();
fi.multisample_on = multisample_on;
fi.in2rt = { 2.0f / input.rtWidthIn, 2.0f / input.rtHeightIn };
fi.in2vp = { 2.0f / input.vpWidthIn, 2.0f / input.vpHeightIn };
std::stringstream dbgss;
if (recipe.bakeBelow)
{
dbgss << "[*B]";
compose_layers(belowLayersRT, recipe.belowBakery, fi);
}
if (recipe.bakeAbove)
{
dbgss << "[*A]";
compose_layers(aboveLayersRT, recipe.aboveBakery, fi);
}
if (recipe.bakeCurrent)
{
dbgss << "[*C]";
build_layer(currentLayerRT, recipe.currentBakery, fi);
}
if (recipe.currentStroke.count > 0)
{
dbgss << "[+C]";
currentLayerRT.begin_receive();
// NOTE: keep depth the same from previous time
// if it was clear we would stack all iterations of
// current stroke and transparent color would sum up.
const auto &dc = recipe.currentStroke;
markerTech.draw(dc.mesh, dc.offset, dc.count, fi.in2rt);
currentLayerRT.end_receive();
}
if (recipe.capture)
{
dbgss << "[CAP]";
tempRT.begin_receive();
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
// TODO: maybe skip drawing these if bake baked nothing (empty layers)
if (recipe.blitBelow)
fs.draw(belowLayersRT.m_tex, GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA);
if (recipe.blitCurrent)
fs.draw(currentLayerRT.m_tex, GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA);
if (recipe.blitAbove)
fs.draw(aboveLayersRT.m_tex, GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA);
tempRT.end_receive();
tempRT.store_image(capture_data.data());
normalize_capture_data();
}
// ----------------------------------------------------------------
if (gamma_on)
{
glEnable(GL_FRAMEBUFFER_SRGB);
}
if (recipe.drawGrid)
{
grid.draw(output.grid_bg_color, output.grid_fg_color, fi.in2vp);
}
else
{
glClearColor(output.bg_color.r,
output.bg_color.g,
output.bg_color.b,
1.0);
glClear(GL_COLOR_BUFFER_BIT);
}
// viewport is centered in window
i32 viewportLeftPx = (input.windowWidthPx - input.vpWidthPx) / 2;
i32 viewportBottomPx = (input.windowHeightPx - input.vpHeightPx) / 2;
glViewport(viewportLeftPx, viewportBottomPx,
input.vpWidthPx, input.vpHeightPx);
// Blit drawing with possible translations/rotations/scaling
if (recipe.blitBelow)
{
dbgss << "[B]";
fs.draw(belowLayersRT.m_tex, GL_ONE, GL_SRC_ALPHA,
output.preTranslate, output.postTranslate,
output.scale, output.rotate,
input.vpWidthIn, input.vpHeightIn,
input.rtWidthIn, input.rtHeightIn);
}
if (recipe.blitCurrent)
{
dbgss << "[C]";
fs.draw(currentLayerRT.m_tex, GL_ONE, GL_SRC_ALPHA,
output.preTranslate, output.postTranslate,
output.scale, output.rotate,
input.vpWidthIn, input.vpHeightIn,
input.rtWidthIn, input.rtHeightIn);
}
if (recipe.fitImage)
{
dbgss << "[FIT]";
const auto &dc = recipe.fitDC;
si.draw(textures[dc.texture].glid, dc.basis, 0.5f, fi.in2vp);
}
if (recipe.blitAbove)
{
dbgss << "[A]";
fs.draw(aboveLayersRT.m_tex, GL_ONE, GL_SRC_ALPHA,
output.preTranslate, output.postTranslate,
output.scale, output.rotate,
input.vpWidthIn, input.vpHeightIn,
input.rtWidthIn, input.rtHeightIn);
}
// Draw UI passes
for (u32 i = 0; i < recipe.guiDCs.size(); ++i)
{
const auto &dc = recipe.guiDCs[i];
dbgss << "[U]";
uirender.draw(dc.texture, dc.mesh,
dc.offset, dc.count,
static_cast<float>(input.vpWidthPt),
static_cast<float>(input.vpHeightPt));
}
if (gamma_on)
{
glDisable(GL_FRAMEBUFFER_SRGB);
}
debugstr = dbgss.str();
}
};
void glfw_error_cb(int, const char *desc)
{
::printf("error: %s\n", desc);
}
int main(int argc, char *argv[])
{
for (int i = 1; i < argc; ++i)
{
if (strcmp(argv[i], "--gldiag") == 0)
{
g_printGLDiagnostics = true;
g_printShaders = true;
}
else if (strcmp(argv[i], "--earlyquit") == 0)
{
g_quitFrame = 2;
}
else if (strcmp(argv[i], "--noretina") == 0)
{
g_noRetina = true;
}
}
glfwSetErrorCallback(glfw_error_cb);
glfwInit();
glfwWindowHint(GLFW_RESIZABLE, 1);
glfwWindowHint(GLFW_DECORATED, 1);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, 1);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_SRGB_CAPABLE, 1);
GLFWmonitor* pMonitor = glfwGetPrimaryMonitor();
i32 monitorWidthPt, monitorHeightPt;
const GLFWvidmode* pVideomode = glfwGetVideoMode(pMonitor);
monitorWidthPt = pVideomode->width;
monitorHeightPt = pVideomode->height;
i32 monitorWidthMm, monitorHeightMm;
glfwGetMonitorPhysicalSize(pMonitor, &monitorWidthMm, &monitorHeightMm);
const float MM_PER_IN = 25.4f;
float monitorWidthIn = monitorWidthMm / MM_PER_IN;
float monitorHeightIn = monitorHeightMm / MM_PER_IN;
float monitorHorDPI = monitorWidthPt / monitorWidthIn;
float monitorVerDPI = monitorHeightPt / monitorHeightIn;
::printf("monitor: %d x %d pt\n", monitorWidthPt, monitorHeightPt);
::printf("monitor: %d x %d mm\n", monitorWidthMm, monitorHeightMm);
::printf("monitor: %f x %f in\n", monitorWidthIn, monitorHeightIn);
::printf("monitor: %f x %f dpi\n", monitorHorDPI, monitorVerDPI);
i32 initialVpWidthPt = 9 * monitorWidthPt / 10;
i32 initialVpHeightPt = 9 * monitorHeightPt / 10;
i32 vpPaddingPt = 2;
i32 windowWidthPt = vpPaddingPt + initialVpWidthPt + vpPaddingPt;
i32 windowHeightPt = vpPaddingPt + initialVpHeightPt + vpPaddingPt;
GLFWwindow* pWindow;
pWindow = glfwCreateWindow(windowWidthPt, windowHeightPt,
"proto", nullptr, nullptr);
bool gl_ok = (pWindow != nullptr);
if (gl_ok)
glfwMakeContextCurrent(pWindow);
gl_ok = gl_ok && load_gl_functions(g_printGLDiagnostics);
if (gl_ok)
{
glfwSetScrollCallback(pWindow, &scroll_callback);
i32 windowWidthPx, windowHeightPx;
glfwGetFramebufferSize(pWindow, &windowWidthPx, &windowHeightPx);
if (g_noRetina)
{
windowWidthPx = windowWidthPt;
windowHeightPx = windowHeightPt;
}
float pxPerPtHor = static_cast<float>(windowWidthPx) / windowWidthPt;
float pxPerPtVer = static_cast<float>(windowHeightPx) / windowHeightPt;
u32 rtWidthPx = static_cast<u32>(monitorWidthPt * pxPerPtHor);
u32 rtHeightPx = static_cast<u32>(monitorHeightPt * pxPerPtVer);
::printf("rendertarget: %d x %d px\n", rtWidthPx, rtHeightPx);
if (g_printGLDiagnostics)
{
::printf("----------------------------\n");
::printf("vendor: %s\n", glGetString(GL_VENDOR));
::printf("renderer: %s\n", glGetString(GL_RENDERER));
::printf("version: %s\n", glGetString(GL_VERSION));
::printf("GLSL version: %s\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
::printf("----------------------------\n");
}
create_texture_unsafe(kernel_services::default_texid, 1, 1, 4);
u8 ones[4] = { 255, 255, 255, 255 };
update_texture_unsafe(kernel_services::default_texid, ones);
quad_indexes.setup();
Pipeline p;
p.setup(rtWidthPx, rtHeightPx);
capture_data_width_px = rtWidthPx;
capture_data_height_px = rtHeightPx;
capture_data.resize(rtWidthPx * rtHeightPx * 4);
check_gl_errors("after setup");
input_data input;
::memset(&input, 0, sizeof(input_data));
output_data output;
double counter_ticks_per_ms = get_platform_counter_freq();
const u32 TIMEPOINTS = 20;
const u32 INTERVALS = TIMEPOINTS-1;
u64 timestamps[TIMEPOINTS] = {0};