drinkingtea/nostalgia
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[nostalgia/core/userland] Add bg control functions for GL

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This commit is contained in:
Gary Talent 2021-03-18 20:19:37 -05:00
parent ba91de90fc
commit e36b123b33
2 changed files with 37 additions and 7 deletions
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1
src/nostalgia/core/userland/gfx.cpp
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@ -31,6 +31,7 @@ ox::Result<T> readObj(Context *ctx, const ox::FileAddress &file) {
ox::Error initConsole(Context *ctx) {
constexpr auto TilesheetAddr = "/TileSheets/Charset.ng";
setBgStatus(ctx, 0b0001);
return loadBgTileSheet(ctx, 0, TilesheetAddr);
}

43
src/nostalgia/core/userland/gfx_opengl.cpp
View File

@ -33,6 +33,7 @@ constexpr auto BgVertexVboLength = BgVertexVboRows * BgVertexVboRowLength;
constexpr auto BgVertexEboLength = 6;
struct Background: public Bufferset {
bool enabled = false;
bool updated = false;
std::array<float, TileCount * BgVertexVboLength> bgVertices;
std::array<GLuint, TileCount * BgVertexEboLength> bgEbos;
@ -185,6 +186,32 @@ ox::Error loadBgTexture(Context *ctx, int section, void *pixels, int w, int h) {
}
uint8_t bgStatus(Context *ctx) {
const auto &id = ctx->rendererData<renderer::GlImplData>();
uint8_t out = 0;
for (unsigned i = 0; i < id->backgrounds.size(); ++i) {
out |= id->backgrounds[i].enabled << i;
}
return out;
}
void setBgStatus(Context *ctx, uint32_t status) {
const auto &id = ctx->rendererData<renderer::GlImplData>();
for (unsigned i = 0; i < id->backgrounds.size(); ++i) {
id->backgrounds[i].enabled = (status >> i) & 1;
}
}
bool bgStatus(Context *ctx, unsigned bg) {
const auto &id = ctx->rendererData<renderer::GlImplData>();
return id->backgrounds[bg].enabled;
}
void setBgStatus(Context *ctx, unsigned bg, bool status) {
const auto &id = ctx->rendererData<renderer::GlImplData>();
id->backgrounds[bg].enabled = status;
}
void draw(Context *ctx) {
const auto id = ctx->rendererData<renderer::GlImplData>();
@ -208,14 +235,16 @@ void draw(Context *ctx) {
glUseProgram(id->bgShader);
const auto uniformTileHeight = static_cast<GLint>(glGetUniformLocation(id->bgShader, "vTileHeight"));
for (auto &bg : id->backgrounds) {
glBindVertexArray(bg.vao);
if (bg.updated) {
bg.updated = false;
renderer::sendVbo(bg);
if (bg.enabled) {
glBindVertexArray(bg.vao);
if (bg.updated) {
bg.updated = false;
renderer::sendVbo(bg);
}
glBindTexture(GL_TEXTURE_2D, bg.tex);
glUniform1f(uniformTileHeight, 1.0f / static_cast<float>(bg.tex.height / 8));
glDrawElements(GL_TRIANGLES, bg.bgEbos.size(), GL_UNSIGNED_INT, 0);
}
glBindTexture(GL_TEXTURE_2D, bg.tex);
glUniform1f(uniformTileHeight, 1.0f / static_cast<float>(bg.tex.height / 8));
glDrawElements(GL_TRIANGLES, bg.bgEbos.size(), GL_UNSIGNED_INT, 0);
}
}